Thursday, June 12, 2008 | 
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JAVA
Program 11
/* Write a program to Concatenate string using for Loop
Example:
Input - 5
Output - 1 2 3 4 5 */
class Join{
public static void main(String args[]){
int num = Integer.parseInt(args[0]);
String result = " ";
for(int i=1;i<=num;i++){
result = result + i + " ";
}
System.out.println(result);
}
}
Program 12
/* Program to Display Multiplication Table */
class MultiplicationTable{
public static void main(String args[]){
int num = Integer.parseInt(args[0]);
System.out.println("*****MULTIPLICATION TABLE*****");
for(int i=1;i<=num;i++){
for(int j=1;j<=num;j++){
System.out.print(" "+i*j+" ");
}
System.out.print("\n");
}
}
}
Program 13
/* Write a program to Swap the values */
class Swap{
public static void main(String args[]){
int num1 = Integer.parseInt(args[0]);
int num2 = Integer.parseInt(args[1]);
System.out.println("\n***Before Swapping***");
System.out.println("Number 1 : "+num1);
System.out.println("Number 2 : "+num2);
//Swap logic
num1 = num1 + num2;
num2 = num1 - num2;
num1 = num1 - num2;
System.out.println("\n***After Swapping***");
System.out.println("Number 1 : "+num1);
System.out.println("Number 2 : "+num2);
}
}
Program 14
/* Write a program to convert given no. of days into months and days.
(Assume that each month is of 30 days)
Example :
Input - 69
Output - 69 days = 2 Month and 9 days */
class DayMonthDemo{
public static void main(String args[]){
int num = Integer.parseInt(args[0]);
int days = num%30;
int month = num/30;
System.out.println(num+" days = "+month+" Month and "+days+" days");
}
}
Program 15
/*Write a program to generate a Triangle.
eg:
1
2 2
3 3 3
4 4 4 4 and so on as per user given number */
class Triangle{
public static void main(String args[]){
int num = Integer.parseInt(args[0]);
for(int i=1;i<=num;i++){
for(int j=1;j<=i;j++){
System.out.print(" "+i+" ");
}
System.out.print("\n");
}
}
}
Program 16
/* Write a program to Display Invert Triangle.
Example:
Input - 5
Output :
5 5 5 5 5
4 4 4 4
3 3 3
2 2
1
*/
class InvertTriangle{
public static void main(String args[]){
int num = Integer.parseInt(args[0]);
while(num > 0){
for(int j=1;j<=num;j++){
System.out.print(" "+num+" ");
}
System.out.print("\n");
num--;
}
}
}
Program 17
/*Write a program to find whether given no. is Armstrong or not.
Example :
Input - 153
Output - 1^3 + 5^3 + 3^3 = 153, so it is Armstrong no. */
class Armstrong{
public static void main(String args[]){
int num = Integer.parseInt(args[0]);
int n = num; //use to check at last time
int check=0,remainder;
while(num > 0){
remainder = num % 10;
check = check + (int)Math.pow(remainder,3);
num = num / 10;
}
if(check == n)
System.out.println(n+" is an Armstrong Number");
else
System.out.println(n+" is not a Armstrong Number");
}
}
Program 18
/* Write a program to Find whether number is Prime or Not. */
class PrimeNo{
public static void main(String args[]){
int num = Integer.parseInt(args[0]);
int flag=0;
for(int i=2;i if(num%i==0) { System.out.println(num+" is not a Prime Number"); flag = 1; break; } } if(flag==0) System.out.println(num+" is a Prime Number"); } } Program 19 /* Write a program to find whether no. is palindrome or not. Example : Input - 12521 is a palindrome no. Input - 12345 is not a palindrome no. */ class Palindrome{ public static void main(String args[]){ int num = Integer.parseInt(args[0]); int n = num; //used at last time check int reverse=0,remainder; while(num > 0){ remainder = num % 10; reverse = reverse * 10 + remainder; num = num / 10; } if(reverse == n) System.out.println(n+" is a Palindrome Number"); else System.out.println(n+" is not a Palindrome Number"); } }
Labels:
Core Java Programs-part 2
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