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ICSE Computer JAVA question

Guess the output of this java program.

class CoolProg
{
static void main()
{
System.out.println(Math.random());
System.out.println("over"+2+3);
System.out.println(2+3+"over"+0);
System.out.println(2+3+"over");
System.out.println(2+3+'A'+-1);
System.out.println('a'+"bhas");
System.out.println('A'+ 2);
System.out.println('A'+ 2);
int b=1;
int c=-b;
System.out.println(-b);
System.out.println(c);
String s="abhas";
System.out.println(s.substring(3,5));
System.out.println(s.substring(0,3));
System.out.println(s.substring(4));
System.out.println(s.substring(2));
}
}

/* * answer

0.6834987231679766 (random no less than 1)
over23
5over0
5over
69
abhas
67
67
-1
-1
as
abh
s
has

*/

Write a java program that checks whether a given NUMBER is palindrome or not.

Write a java program that checks whether a given NUMBER is palindrome or not.


import java.io.*;
public class Palindromenumber
{
public static void main(String args[])throws IOException
{
DataInputStream din=new DataInputStream(System.in);
int num,remainder,result=0,n;
System.out.println("Enter the number:");
String s=din.readLine();num = Integer.parseInt(s);
n=num;
while(num>0)
{
remainder = num%10;result = result * 10 + remainder;num = num/10;
}
if(n==result)
{
System.out.println(n+"is palindrome" );
}else
{
System.out.println(n+" is not palindrome" );
}
}
}

Write a java program to display the product of two given matrices

Write a java program to display the product of two given matrices

public class Matrix
{
public static void main(String args[])
{
int a[][] ={{ 1, 2, 5 },{ 3, 4, 4 },{ 5, 6, 2 },};
int b[][] ={{ 7, 8, 9 },{ 1, 2, 3 },{ 4, 9, 5 },};
int c[][] = mult(a, b);
System.out.println("Result: ");
for (int i = 0; i < c.length; ++i)
{
System.out.print("{");
for (int j = 0; j < c.length; ++j)
{
System.out.print(" "+c[j]);
}
System.out.println("}");
}
}

public static int mult(int a[][], int b[][])[][]
{
int rows = a.length;
int cols = b[0].length;
int c[][] = new int[rows][cols];
for (int i = 0; i <>
{
for (int j = 0; j <>
{
c[j] = 0;
for (int k = 0; k <>
{
c[j]= a[k] * b[k][j]+c[j];
}
}
}
return c;
}
}

JAVA Program to check a String for palindrome

//!BjueJ :IDE for icse students!

import java.io.*;
class palindrome
{
public static void main(String arg[])throws IOException
{
DataInputStream in=new DataInputStream(System.in);
int l,i,j,flag=1;
String s;
System.out.println("Enter the string:");
s=in.readLine();
l=s.length();
for(i=0,j=l-1;i<=j;i++,j--)
{
if(s.charAt(i)==s.charAt(j))
{}
else
{
flag=0;
break;
}
}
if(flag==1)
System.out.print(s+" is palindrome");
else
System.out.print(s+" is not palindrome");
}
}

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JAVA program for icse students

A library charges a fine for books returned late following are the charges for fine:--
First 5 Days:- 40 paise / day
6-10 days :- 60 paise /day
above 10 days:- 1 rupee /day

do with buffer reader..

import java.io.*;
class buff
{
void main()throws IOException
{
BufferedReader obj=new BufferedReader(new InputStreamReader(System.in));
System.out.println("enter no. of days");
int a;
a=Integer.parseInt(obj.readLine());
double ans=0;
if (a<=5)
ans=a*.4;
else if(a<=10)
ans= 2 + ((a-5)*.6);
else
ans= 2 + 3 + a-10;
System.out.println("Fine:"+ans);
}
}

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