package lab1_1;
public class Lab1_1 {
public static void main(String[] args) {
System. out. print(20*1/3+Math. pow (158,2));
}
}
package lab1_2;
public class Lab1_2 {
public static void main(String[] args) {
int a=14;
double c;c=(a/209)+a*(29-(Math. pow (13,2))+a/3);
System. out. println(c);
}
}
package Lab1_3;
public class Lab1_3 {
public static void main(String[] args) {
int a=53,b;
b=a%10+(a/10)%10;
System. out. print(b);
}
}
package Lab1_4;
public class Lab1_4 {
public static void main(String[] args) {
// TODO Auto-generated method stub
double x=5.45698;
System. out. println((int) x);
}
}
package Lab1_5;
public class Lab1_5 {
public static void main(String[] args) {
// TODO Auto-generated method stub
int n=532;
int summa;
summa=n%10+(n/10)%10+(n/100)%10;
System. out. println(summa);
}
}
package sayhello;
public class Hello {
public static void main(String[] args) {
// TODO Auto-generated method stub
System. out. println(Math. pow (20,1/3)+Math. pow (158,2));
}
}
LAB2
package lab2_1;
import java.util.Scanner;
public class Lab2_1 {
public static void main(String[] args) {
Scanner sc = new Scanner(System. in);
int q=sc.nextInt(),w= sc.nextInt();
System. out. print(q+"/"+w+"="+(q/w)+" и "+(q%w)+" остатке");
}
}
package lab2_2;
import java.util.Scanner;
public class Lab2_2 {
public static void main(String[] args) {
Scanner sc = new Scanner(System. in);
int n= sc.nextInt(),summa=0,k;
while (n!=0)
{
k=n%10;
n/=10;
summa+=k;
}
System. out. println(summa);
}
}
package lab2_3;
import java.util.Scanner;
public class Lab2_3 {
public static void main(String[] args) {
Scanner sc = new Scanner(System. in);
double n= sc.nextDouble();
System. out. println(Math. round (n));
}
}
Lab3
package lab3_1;
public class Lab3_1 {
public static void main(String[] args) {
int a=60,b=45,c=40;
System. out. println(Math. cos ((Math. PI *a)/180));
System. out. println(Math. cos ((Math. PI *b)/180));
System. out. println(Math. cos ((Math. PI *c)/180));
}
}
package lab3_2;
public class Lab3_2 {
public static void main(String[] args) {
int a=5,b=4,Area,Perimeter;
Area=(a*b)/2;
Perimeter=(a+b)*2;
System. out. print("Area = "+Area+" "+" Perimeter ="+ Perimeter);
}
}
package lab3_3;
import java.util.Scanner;
public class Lab3_3 {
public static void main(String[] args) {
Scanner sc = new Scanner(System. in);
System. out. println("Enter a number");
int n = sc.nextInt(); int k=0;
while (n!=0){
n/=10;
k++;
}
System. out. println("Number has "+k+" digits");
}
}
package lab3_4;
import java.util.Scanner;
public class Lab3_4 {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner sc = new Scanner(System. in);
System. out. println("Enter a number please ");
double n = sc.nextDouble();
if (n<0) System. out. println("-1");
else if (n>0) System. out. println("+1");
else if (n==0) System. out. println("0");
}
}
package lab3_5;
public class Lab3_5 {
public static void main(String[] args) {
System. out. print((int) (Math. random ()*7)-3);
}
}
package lab3_6;
import java.util.Scanner;
public class Lab3_6 {
public static void main(String[] args) {
Scanner sc = new Scanner(System. in);
System. out. println("Enter a number, please");
int n = sc.nextInt();
System. out. println((int) (Math. random ()*2*n)-n);
}
}
package lab3_7;
import java.util.Scanner;
public class Lab3_7 {
public static void main(String[] args) {
Scanner sc = new Scanner(System. in);
System. out. println("Enter a and b");
int a= sc.nextInt(),b= sc.nextInt();
if (a>b&&a==b)
System. out. print(" It is not correct");
else System. out. println((int) (Math. random ()*b+1)+a);
}
}
Lab4
package lab4_1;
import java.util.Scanner;
public class Lab4_1 {
public static void main(String[] args) {
Scanner sc = new Scanner(System. in);
boolean a; int n;
System. out. println("Please enter a number");
n= sc.nextInt();
if (n%2==0)
{a= true;System. out. println(a);}
else if (n%2!=0)
{a= false;
System. out. print(a);}
}
}
package lab4_2;
import java.util.Scanner;
public class Lab4_2 {
public static void main(String[] args) {
Scanner sc = new Scanner(System. in);
double m,n;
System. out. println("Enter M");
m= sc.nextDouble();
System. out. println("Enter N");
n= sc.nextDouble();
if ((m-10)<(n-10)) System. out. print(m);
else if ((n-10)<(m-10)) System. out. print(n);
}
}
package lab4_3;
import java.util.Scanner;
public class Lab4_3 {
public static void main(String[] args) {
Scanner sc = new Scanner(System. in);
double a,b, c,D;
System. out. println("Enter a,b,c");
a=sc.nextDouble();
b=sc.nextDouble();
c=sc.nextDouble();
D=Math. pow (b,2);
if (D>0)
{
System. out. println("x1="+((-b/(2*a)+Math. sqrt (D))));
System. out. println("x2="+((-b/(2*a))-Math. sqrt (D)));
} else if (D==0)
System. out. println(-b/(2*a));
if (D<0)
System. out. println("Error");
}
}
ЛАБ 4 по варианту
package lab4_3;
import java.util.Scanner;
public class Lab4_variant3 {
public static void main(String[] args) {
Scanner sc = new Scanner (System. in);
int a,b,c;
System. out. println("Enter 3 numbers ");
a=sc.nextInt();
b=sc.nextInt();
c=sc.nextInt();
if (a>b&&b>c&&a>c) System. out. println(b);
else if (a>b&&c>b&&a>c) System. out. println(c);
else if (b>a&&b>c&&a>c) System. out. println(a);
else if (b>a&&b>c&&c>a)System. out. println(c);
else if (c>a&&c>b&&a>b) System. out. println(a);
else if (c>a&&c>b&&b>a) System. out. println(b);
else System. out. print("Error");
}
}
Лаб 5
package lab5_1;
public class Lab5_1 {
public static void main(String[] args) {
int n;
n=(int) ((Math. random ()*151)+5);
System. out. println(n);
if (n>25&&n<100) System. out. println("Число "+n+ " содержится в интервале (25,100)");
else
System. out. println("Число "+n+ " не содержится в интервале (25,100)");
}
}
package lab5_2;
public class lab5_2 {
public static void main(String[] args) {
int n; int max=0,k;
n=(int) ((Math. random ()*900)+100);
System. out. print("In number "+n+" the biggest is ");
while (n!=0)
{k=n%10;
n/=10;
if (k>max) max=k;}
System. out. println(max);
}
}
package lab5_3;
import java.util.Scanner;
public class Lab5_3 {
public static void main(String[] args) {
Scanner sc = new Scanner(System. in);
int a,b,c;
System. out. println("Please enter numbers ");
a=sc.nextInt();
b=sc.nextInt();
c=sc.nextInt();
if (a>b&&a>c&&b>c) System. out. print(c+" " + b+" " +a);
if (a>b&&a>c&&c>b) System. out. print(b+" "+c+" "+a);
if (b>a&&b>c&&a>c) System. out. print(c+" "+a+" "+b);
if (b>a&&b>c&&c>a) System. out. print(a+" "+c+" "+b);
if (c>a&&c>b&&b>a) System. out. print(a+" "+b+" "+c);
if (c>a&&c>b&&a>b) System. out. print(b+" "+a+" "+c);
}
}
package lab5_4;
public class Lab5_4 {
public static void main(String[] args) {
int Petrov_hours,worker_hour=0;
Petrov_hours=(int) ((Math. random ()*28801)+0);
if (Petrov_hours==28800) worker_hour=8;
else if (Petrov_hours<28800&&Petrov_hours>=25200) worker_hour=7;
else if (Petrov_hours<25200&&Petrov_hours>=21600) worker_hour=6;
else if (Petrov_hours<21600&&Petrov_hours>=18000) worker_hour=5;
else if (Petrov_hours<18000&&Petrov_hours>=14000) worker_hour=4;
else if (Petrov_hours<14400&&Petrov_hours>=10800) worker_hour=3;
else if (Petrov_hours<10800&&Petrov_hours>=7200) worker_hour=2;
else if (Petrov_hours<7200&&Petrov_hours>=3600) worker_hour=1;
else if (Petrov_hours<3600&&Petrov_hours>=0) worker_hour=0;
switch (worker_hour){
case 0: {System. out. println(Petrov_hours);System. out. print("less than 1 hour left ");} break;
case 1:{ System. out. println(Petrov_hours);System. out. print("1 hour left");} break;
case 2:{System. out. println(Petrov_hours);System. out. print("2 hours left");} break;
case 3:{System. out. println(Petrov_hours);System. out. print("3 hours left");} break;
case 4:{System. out. println(Petrov_hours);System. out. print("4 hours left");} break;
case 5:{System. out. println(Petrov_hours);System. out. print("5 hours left");} break;
case 6:{System. out. println(Petrov_hours);System. out. print("6 hours left");} break;
case 7:{System. out. println(Petrov_hours);System. out. print("7 hours left");} break;
case 8:{System. out. println(Petrov_hours);System. out. print(" 8 hours left "); break;
}
}
}
}
ЛАБ 5 по варианту
package Lab5_var_3;
import java.util.Scanner;
public class Lab_5_3_var {
public static void main(String[] args) {
Scanner sc = new Scanner (System. in);
int day; System. out. println("Выберите число от 0 до 9 ");
day=sc.nextInt();
switch (day)
{
case 0:System. out. println("-ноль"); break;
case 1:System. out. println(" -один"); break;
case 2:System. out. println(" -два"); break;
case 3:System. out. println(" -три"); break;
case 4:System. out. println(" -четыре"); break;
case 5:System. out. println(" -пять"); break;
case 6:System. out. println(" -шесть"); break;
case 7:System. out. println(" -семь"); break;
case 8:System. out. println(" -восемь"); break;
case 9:System. out. println(" -девять"); break;
default: System. out. println(" Число не из этого диапазона");
}
}
}
Лаб 6
package lab6_1;
import java.util.Scanner;
public class Lab6_1 {
public static void main(String[] args) {
Scanner sc = new Scanner (System. in);
int a;
if (sc.hasNextInt()){
a=sc.nextInt();
if (a%2==0) System. out. print(" Четное число");
else System. out. print(" Нечетное");
}
else System. out. print("Error");
}
}
package lab6_2;
import java.util.Scanner;
public class Lab6_2 {
public static void main(String[] args) {
Scanner sc = new Scanner(System. in);
int a,b,sum;
if (sc.hasNextInt()){
a=sc.nextInt();
b=sc.nextInt();
sum=a+b;
System. out. println(sum);
}
else System. out. println("Error");
}
}
package lab6_3;
import java.util.Scanner;
public class Lab6_3 {
public static void main(String[] args) {
Scanner sc = new Scanner(System. in);
double a,b,c;
a=sc.nextDouble();
b=sc.nextDouble();
c=sc.nextDouble();
if (Math. abs (a)>Math. abs (b)&&Math. abs (a)>Math. abs (c)&&Math. abs (b)>Math. abs (c)) System. out. print(c);
else if (Math. abs (a)>Math. abs (b)&&Math. abs (a)>Math. abs (c)&&Math. abs (c)>Math. abs (b)) System. out. print(b);
else if (Math. abs (b)>Math. abs (a)&&Math. abs (b)>Math. abs (c)&&Math. abs (a)>Math. abs (c)) System. out. print(c);
else if (Math. abs (b)>Math. abs (a)&&Math. abs (b)>Math. abs (c)&&Math. abs (c)>Math. abs (a)) System. out. print(a);
else if (Math. abs (c)>Math. abs (a)&&Math. abs (c)>Math. abs (b)&&Math. abs (a)>Math. abs (b)) System. out. print(b);
else if (Math. abs (c)>Math. abs (a)&&Math. abs (c)>Math. abs (b)&&Math. abs (b)>Math. abs (a)) System. out. print(a);
}
}
package lab6_4;
import java.util.Scanner;
public class lab6_4 {
public static void main(String[] args) {
Scanner sc = new Scanner (System. in);
String s=sc.nextLine();s=s.toUpperCase();
if (s.length()!=5) System. out. println("Error");
else System. out. println("Correct word");
if (s.charAt(0)==s.charAt(4)&&s.charAt(1)==s.charAt(3))
System. out. println("This a polindrome");
else System. out. print("This is NOT polindrome");
}
}
LAB 6 po variantu
package Po_Variantu;
import java.util.Scanner;
public class Var_3 {
public static void main(String[] args) {
Scanner input = new Scanner (System. in);
String text;
System. out. print("Please enter a text");
text= input.nextLine();
String [] words = text.split(" ");
System. out. println("The longest word is "+ findLongest (words));
System. out. println("The Shortest word is "+ findShortest (words));
}
static String findLongest(String[] strArr) {
String temp = strArr[0].trim();
for (int i = 1; i < strArr.length; i++) {
if (temp.length() < strArr[i].trim().length()) {
temp = strArr[i].trim();
}
}
return temp;
}
static String findShortest(String[] strArr) {
String temp = strArr[0].trim();
for (int i = 1; i < strArr.length; i++) {
if (temp.length() > strArr[i].trim().length()) {
temp = strArr[i].trim();
}
}
return temp;
}
}
Лаб 7
package lab7_1;
import java.util.Scanner;
public class Lab7_1 {
public static void main(String[] args) {
// prog — числосозданноепрограммой
// user — числовведённоепользователем
int prog, user,k=0;
// Генерируемслучайноецелоечислоот 1 до 10
prog = (int)(Math. random () * 10) + 1;
System. out. println("Я загадала число от 1 до 10, отгадайте его.");
System. out. print("Вводите ваше число: ");
Scanner input = new Scanner(System. in);
// Проверяем, естьли в потокевводацелоечисло
if (input.hasNextInt()) {
do {
// Читаем с потокавводацелоечисло
user = input.nextInt();
if (user == prog) {
System. out. println("Вы угадали!");
} else {
// Проверяем, входитличисло в отрезок [1;10]
if (user > 0 && user <= 10) {
System. out. print("Вы не угадали! ");
// Есличислозагаданноепрограммойменьше...
if (prog < user) {
System. out. println("Моё число меньше.");
} else {
System. out. println("Моё число больше.");
}
} else {
System. out. println("Ваше число вообще не из нужного отрезка!");
}
}
k++; } while (user!= prog);System. out. println(k+" попытки ");
} else {
System. out. println("Ошибка. Вы не ввели целое число!");
}
System. out. println("До свиданья!");
}
}
package lab7_2;
import java.util.Scanner;
public class Lab7_2 {
public static void main(String[] args) {
// prog — числосозданноепрограммой
// user — числовведённоепользователем
int prog, user;
// Генерируемслучайноецелоечислоот 1 до 10
prog = (int)(Math. random () * 21) -10;
System. out. println("Я загадала число от -10 до 10, отгадайте его.");
System. out. print("Вводите ваше число: ");
Scanner input = new Scanner(System. in);
// Проверяем, естьли в потокевводацелоечисло
if (input.hasNextInt()) {
do {
// Читаем с потокавводацелоечисло
user = input.nextInt();
if (user == prog) {
System. out. println("Вы угадали!");
} else {
// Проверяем, входитличисло в отрезок [-10;10]
if (user >= -10 && user <= 10&&user!=0) {
System. out. print("Вы не угадали! ");
// Есличислозагаданноепрограммойменьше...
if (prog < user) {
System. out. println("Моё число меньше.");
} else {
System. out. println("Моё число больше.");
}
} else {
System. out. println("Ваше число вообще не из нужного отрезка!");
}
}
} while (user!= prog);
} else {
System. out. println("Ошибка. Вы не ввели целое число!");
}
System. out. println("До свиданья!");
}
}
package lab7_3;
import java.util.Scanner;
public class Lab7_3 {
public static void main(String[] args) {
// prog — числосозданноепрограммой
// user — числовведённоепользователем
int prog, user;
// Генерируемслучайноецелоечислоот 1 до 10
prog = (int)(Math. random () * 21) - 10;
System. out. println("Я загадала число от 1 до 10, отгадайте его.");
System. out. print("Вводите ваше число: ");
Scanner input = new Scanner(System. in);
// Проверяем, естьли в потокевводацелоечисло
if (input.hasNextInt()) {
do {
// Читаем с потокавводацелоечисло
user = input.nextInt();
if (user == prog) {
System. out. println("Вы угадали!");
} else {
// Проверяем, входитличисло в отрезок [-10;10]
if (user >= -10 && user <= 10) {
System. out. print("Вы не угадали! ");
// Есличислозагаданноепрограммойменьше...
if (prog < user) { if (user>0&&prog<0) System. out. println("противоположный знак ");
else if (user<0&&prog>0) System. out. println(" противоположный знак");
System. out. println("Моё число меньше.");
} else { if (user>0&&prog<0) System. out. println("противоположный знак ");
else if (user<0&&prog>0) System. out. println(" протвоположный знак");
System. out. println("Моё число больше.");
}
} else {
System. out. println("Ваше число вообще не из нужного отрезка!");
}
if (user>0&&prog<0) System. out. println("противоположный знак ");
else if (user<0&&prog>0) System. out. println(" протвоположный знак");
}
} while (user!= prog);
} else {
System. out. println("Ошибка. Вы не ввели целое число!");
}
System. out. println("До свиданья!");
}
}
package lab7_4;
public class Lab7_4 {
public static void main(String[] args) {
int a=1000;
while (a<=9999)
{System. out. println(a+" ");a+=3;}
System. out. println();
for (int i=1000;i<9999;i+=3)
System. out. println(i);
System. out. println();
a=1000;
do {
System. out. println(a);a+=3;
} while (a<9999);
}
}
package lab7_5;
public class Lab7_5 {
public static void main(String[] args) {
int a=1,i=0;
while (i!=55)
{i++;
System. out. println(a);a+=2;
}
System. out. println();a=1;
for (i=1;i!=55;i++)
{System. out. print(a+" ");a+=2;}
}
}
package lab7_6;
public class lab7_6 {
public static void main(String[] args) {
int a=90;
do
{
System. out. println(a);
a-=5;
} while (a>=0);
/*while(a>=0){
System.out.println(a);
a-=5;
}*/
for (int i=90;i>0;i=i-5)
System. out. print(i+"\t");
}
}
package lab7_7;
public class Lab7_7 {
public static void main(String[] args) {
int a=2,i=1;
while (i!=20){
i++;System. out. println(a);a*=2;
}
/*do{
i++;System.out.println(a);a*=2;
}while(i!=20);*/
a=2;
for (i=1;i!=20;i++)
{System. out. print(a+"\t");a*=2;}
}
}
package lab7_8;
public class Lab7_8 {
public static void main(String[] args) {
int a=2;
while (a<10000)
{
System. out. print(a+" ");a=2*a-1;
}
System. out. println();
for (a=2;a<10000;a=2*a-1)
System. out. print(a+"\t");
/*do
{
System.out.print(a+" ");a=2*a-1;
}while (a<10000);*/
}
}
package lab7_9;
public class Lab7_9 {
public static void main(String[] args) {
int a=-166;
while (a<100)
{ if (a>-100)System. out. println(a);a=2*a+200;}
/*do
{if(a>-100)System.out.println(a);a=2*a+200;}while(a<100);*/
for (a=-166;a<100;a=2*a+200){ if (a>-100)System. out. print(a+"\t");}
}}
package lab7_10;
import java.util.Scanner;
public class Lab7_10 {
public static void main(String[] args) {
Scanner sc = new Scanner (System. in);
int n; double fact=1;
System. out. println("Enter a number");
n=sc.nextInt();
for (int i=1;i<=n;i++)
fact*=i;
System. out. print("The factorial of number "+n+" is "+fact);
}
}
package lab7_11;
import java.util.Scanner;
public class Lab7_11 {
public static void main(String[] args) {
Scanner sc = new Scanner(System. in);
int n,k,i;
System. out. println("Enter a positive number");
n=sc.nextInt();
for (i=1;i<=n;i++){
k=n%i;
if (k==0)
System. out. print(i+" ");
}
System. out. println();
i=1;
while (i<=n)
{
k=n%i;
if (k==0)
System. out. print(i+" ");
i++;
}
/*do{
k=n%i;
if(k==0)
System.out.print(i+" ");
i++;
}while(i<=n);*/
}
}
package lab7_12;
import java.util.Scanner;
public class Lab7_12 {
public static void main(String[] args) {
Scanner sc = new Scanner (System. in);
int n,k,s=0;
System. out. println("Enter a number");
n=sc.nextInt();
for (int i=1;i<=n;i++)
{
k=n%i;
if (k==0)
s++;
}
if (s==2) System. out. println(n+" IS PRIME");
else System. out. println(n+ " NOT PRIME");
}
}
package lab7_13;
public class Lab7_13 {
public static void main(String[] args) {
int a1=3,a2=2; int a;
for (int i=1;i<=12;i++)
{
if (i%2!=0){System. out. print(a1+" ");
a1=2*a1-2;}
else {a=2*a2-2;
System. out. print(a+" ");}
}
}}
package lab7_14;
public class Lab7_14 {
public static void main(String[] args) {
int [] fib= new int [11];
fib[0]=1;fib[1]=1;
for (int i=2;i<11;i++)
{
fib[i]=fib[i-1]+fib[i-2];
}
for (int i=0;i<11;i++)
System. out. print(fib[i]+" ");
}
}
package lab7_15;
import java.util.*;
public class Lab7_15 {
public static void main(String[] args) {
Scanner sc = new Scanner(System. in);
int n= sc.nextInt();
int summa=0; int k;
while (n!=0)
{ k=n%10;
summa+=k;
n/=10;
}
System. out. print("Sum ="+summa);
}
}
package lab7_16;
public class Lab7_16 {
public static void main(String[] args) {
int summa1=0,summa2=0,j=0; int t=0;
int [] set= new int [6]; int i;
double [] numbers= new double [1000000];
for (i=1; i<=999999;i++)
numbers[i]=i;
for (i=1;i<=999999;i++)
{
for (j=0;j<6;j++)
{
set[j]=(int) numbers[(int) i]%10;
numbers[(int) i]/=10;
if (j<3)
summa2+=set[j];
else if (j>=3)
summa1+=set[j];
}
if (summa1==summa2)t++;
summa1=0;summa2=0;
}
System. out. print(t);}}
__________________________________________________________________________
package lab7_17;
public class Lab7_17 {
public static void main(String[] args) {
int t=0,j=0;
int [] books= new int [50001];
int [] k= new int [6];
for (int i=1;i<50001;i++)
books[i]=i;
for (int i=1;i<50001;i++)
{
for (j=5;j>0;j--)
{k[j]=books[i]%10;
books[i]/=10;
if (k[j]==2&&k[j-1]!=2)
t++;}
}
System. out. print(t);
}}
package lab7_18;
public class Lab7_18 {
public static void main(String[] args) {
int k,t=0;
int [] clock= new int [2400];
int [] symmetry = new int [4];
for (int i=0;i<2400;i++)
clock[i]=i;
for (int i=0;i<2400;i++){
for (int j=0;j<4;j++)
{
symmetry[j]=clock[i]%10;
clock[i]/=10;
}
if (symmetry[0]==symmetry[3]&&symmetry[1]==symmetry[2])
t++;
}
System. out. print(t);
}
}
package lab7_19;
public class Lab7_19 {
public static void main(String[] args) {
int t=0;
int [] check= new int [5];
int [] num= new int [100000];
for (int i=1;i<=99999;i++)
num[i]=i;
for (int i=1;i<=99999;i++)
{
for (int j=0;j<5;j++)
{check[j]=num[i]%100;
num[i]/=10;
if (check[j]==13||check[j]==4)
t++;
}}
System. out. print(t);
}
}
LAB 8
package lab8;
public class lab8_1 {
public static void main(String[] args) {
int [] numbers= new int [21];
for (int i=0;i<=21;i++)
{
if (i%2==0)
numbers[i]=i;
}
for (int i=2;i<=21;i+=2)
System. out. print(numbers[i]+" ");
System. out. println();
for (int i=2;i<=20;i+=2)
System. out. println(numbers[i]);
}
}
package lab8;
public class Lab8_2 {
public static void main(String[] args) {
int [] numbers= new int [100];
for (int i=1;i<100;i++)
{
if (i%2!=0)
numbers[i]=i;
}
for (int i=1;i<100;i+=2)
System. out. print(numbers[i]+" ");
System. out. println();
for (int i=99;i>=1;i-=2)
System. out. print(numbers[i]+" ");
}
}
package lab8;
public class lab8_3 {
public static void main(String[] args) {
int [] nums= new int [15];
int k=0;
for (int i=0;i<15;i++)
{
nums[i]=((int) (Math. random ()*10)+0);
System. out. print(nums[i]+" ");
if (nums[i]!=0&&nums[i]%2==0)
k++;
}
System. out. println();
System. out. println(k);
}
}
package lab8;
public class Lab8_4 {
public static void main(String[] args) {
int [] mass= new int [8];
for (int i=0;i<8;i++)
mass[i]=((int) (Math. random ()*10)+1);
for (int i=0;i<8;i++)
System. out. print(mass[i]+" ");
for (int i=0;i<8;i++)
if (i%2!=0)
mass[i]=0;
System. out. println();
for (int i=0;i<8;i++)
System. out. print(mass[i]+" ");
}
}
package lab8;
public class lab8_5 {
public static void main(String[] args) {
int sum1=0,sum2=0;
int [] mass1= new int [5];
int [] mass2= new int [5];
for (int i=0;i<5;i++)
{mass1[i]=((int)(Math. random ()*5)+0);
sum1+=mass1[i];}
for (int j=0;j<5;j++)
{
mass2[j]=((int)(Math. random ()*5)+0);
sum2+=mass2[j];
}
if ((sum1/5)>(sum2/5))
System. out. print("sum1="+sum1/5+" > "+"sum2="+sum2/5);
else if ((sum1/5)<(sum2/5))
System. out. print("sum1="+sum1/5+" < "+"sum2="+sum2/5);
else if ((sum1/5)==(sum2/5)) System. out. print("sum1="+sum1/5+" = "+"sum2="+sum2/5);
}
}
package lab8;
public class lab8_6 {
public static void main(String[] args) {
int k=0;
int [] mass= new int [5];
for (int i=0;i<4;i++)
{mass[i]=((int)(Math. random ()*90)+10);
System. out. print(mass[i]+" ");
}
for (int i=0;i<4;i++)
if (mass[i+1]>mass[i])
k++;
if (k==3)
System. out. print("Возрастающая ");
else System. out. print("Error");
System. out. print(k);
}
}
package lab8;
public class Lab8_7 {
public static void main(String[] args) {
int [] fibb= new int [20];
fibb[0]=1;fibb[1]=1;
for (int i=2;i<20;i++)
fibb[i]=fibb[i-1]+fibb[i-2];
for (int i=0;i<20;i++)
System. out. print(fibb[i]+" ");
}
}
package lab8;
public class Lab8_8 {
public static void main(String[] args) {
int [] mass = new int [12];
int max=mass[0],min=mass[0];
for (int i=0;i<12;i++)
{mass[i]=((int)(Math. random ()*31)-15);
System. out. print(mass[i]+" ");
if (mass[i]>max)
max=mass[i];
else if (mass[i]<min)
min=mass[i];
}
System. out. println();
System. out. print("Max = "+max+" "+" Min = "+min);
}
}
package lab8;
public class Lab8_9 {
public static void main(String[] args) {
float [] mass1= new float [10];
float []mass2 = new float [10]; int k=0;
double [] mass3 = new double [10];
for (int i=0;i<10;i++)
{
mass1[i]=(int)(Math. random ()*9+1);
mass2[i]=(int)(Math. random ()*9+1);
mass3[i]=(double) (mass1[i]/mass2[i]);
}
for (int i=0;i<10;i++)/* Vyvodpervogomassiva */
System. out. print(mass1[i]+" ");System. out. println();
for (int i=0;i<10;i++)/* Vyvodvtorogomassiva */
System. out. print(mass2[i]+" ");System. out. println();
for (int i=0;i<10;i++)/* Vyvod tret'ego massiva */
{
System. out. print(mass3[i]+" ");
if (mass3[i]-Math. round (mass3[i])==0)
k++;
}
System. out. println();
System. out. print("Num of integers = "+k);
}}
package lab8;
public class Lab8_10 {
public static void main(String[] args) {
int [] mass = new int [11]; int a=0,b=0,c=0;/*a,b,c budutschitat
skolkorazpovtoryaetsyakajdayacifra a=-1 b=0 c=1*/
for (int i=0;i<11;i++)
{mass[i]=(int) (Math. random ()*2)-1;
System. out. print(mass[i]+" ");
if (mass[i]==-1) a++;
else if (mass[i]==0) b++;
else if (mass[i]==1) c++;
}
if ((a>b&&b>c)||(a>b&&c>b)) System. out. println("Цифра -1 повторяется больше всех ");
else if ((b>a&&a>c)||(b>a&&c>a)) System. out. println("Цифра 0 повторяется больше всех ");
else if ((c>a&&a>b)||(c>a&&b>a)) System. out. println("Цифра 1 повторяется больше всех ");
else System. out. println();
}
}
package lab8;
import java.util.*;
public class Lab8_11 {
public static void main(String[] args) {
Scanner sc = new Scanner (System. in);
System. out. println ("Please enter a N");
int n;
int sum1=0,sum2=0;
if (sc.hasNextInt())
{
do {
n=sc.nextInt();
int [] mass = new int [n];
if (n%2==0&&n>0)
{
for (int i=0;i<n;i++)
{mass[i]=(int)((Math. random ()*11)-5);
System. out. print(mass[i]+" ");
if (i<(n/2))
sum1+=Math. abs (mass[i]);
else sum2+=Math. abs (mass[i]);
}
System. out. println();
if (sum1>sum2) System. out. print("Sum1 is bigger");
else if (sum1<sum2) System. out. print("Sum2 is bigger");
else System. out. print("They are equal");
}
else System. out. print("Enter another number");
} while (n%2!=0&&n>0);
}
}}
package lab8;
public class Lab8_12 {
public static void main(String[] args) {
int k=0,t=0;// Счетчикидлячисел
int [] mass = new int [12];
do
{
for (int i=0;i<12;i++)
{
mass[i]= (int)(Math. random ()*21)-10;
if (mass[i]>0)
k++;//count positive
if (mass[i]<0)
t++;//count negative
if (mass[i]==0)
--i;
if (i==11&&k!=6)
{k=0;t=0;}
}
} while (k!=6&&t!=6);
for (int i=0;i<12;i++)
System. out. print(mass[i]+" ");
}
}
package lab8;
import java.util.Scanner;
public class Lab8_13 {
public static void main(String[] args) {
int n;
int a=0;
System. out. println ("Please enter a N");
do {
Scanner sc = new Scanner(System. in);
n=sc.nextInt();
if (n<=3)
System. out. print("Please enter another number");
} while (n<=3);
int [] mass = new int [ n];
for (int i=0;i<n;i++)
{
mass[i]=(int)(Math. random ()*(n+1)+0);
System. out. print(mass[i]+" ");
if (mass[i]%2==0&&mass[i]!=0)
a++;
}
System. out. println();
int mas_par[] = new int [a], j=0;
for (int i = 0; i < mass.length; i++) {
if (mass[i]%2==0&&mass[i]!=0) {
mas_par[j]=mass[i];
System. out. print(mas_par[j] + " ");
j++;}}
}
}
package lab8;
public class Lab8_14 {
public static void main(String[] args) {
int [][] mass= new int [8][5];
for (int i=0;i<8;i++)
for (int j=0;j<5;j++)
mass[i][j]=(int) (Math. random ()*90+10);
for (int i=0;i<8;i++)
{ for (int j=0;j<5;j++)
System. out. print(mass[i][j]+" ");
System. out. println();}
}
}
package lab8;
public class Lab8_15 {
public static void main(String[] args) {
int [][] mass= new int [5][8];
int max=mass[0][0];
for (int i=0;i<5;i++)
for (int j=0;j<8;j++)
mass[i][j]=(int)(Math. random ()*199)-99;
for (int i=0;i<5;i++)
{ for (int j=0;j<8;j++)
System. out. print(mass[i][j]+" ");System. out. println();
}
System. out. println();
for (int i=0;i<5;i++)
for (int j=0;j<8;j++)
if (mass[i][j]>max)
max=mass[i][j];
System. out. print("max = "+max);
}
}
package lab8;
public class Lab8_16 {
static int t;
public static void main(String[] args) {
int [][] massiv= new int [7][4];
int [] proizv= new int [7];
int product=1;
for (int i=0;i<7;i++)
for (int j=0;j<4;j++)
massiv[i][j]=(int)(Math. random ()*11)-5;
for (int i=0;i<7;i++)
{ for (int j=0;j<4;j++)
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