Question

Sum Pattern In JAVA

Write a program to print triangle of user defined integers sum.

if input 4

output should :
1=1
1+2=3
1+2+3=6
1+2+3+4=10
Answer The Program
​

Answer 1

Answer:

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Computer Science

A triangular number is formed by the addition of consecutive integers starting with 1. For example,

1 + 2 = 3

1 + 2 + 3 = 6

1 + 2 + 3 + 4 = 10

1 + 2 + 3 + 4 + 5 = 15

Thus, 3, 6, 10, 15, are triangular numbers.

Write a program in Java to display all the triangular numbers from 3 to n, taking the value of n as an input.

Java

Java Iterative Stmts

ICSE

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ANSWER

import java.util.Scanner;

public class KboatTriangularNumbers

{

public static void main(String args[]) {

Scanner in = new Scanner(System.in);

System.out.print("Enter number: ");

int n = in.nextInt();

if (n < 3) {

System.out.println("Value of n should be greater than or equal to 3");

return;

}

System.out.println("Triangular Numbers from 3 to "

+ n + ":");

int sum = 3; //First Triangular Number

for (int i = 3; sum <= n; i++) {

System.out.println(sum);

sum += i;

}

}

}

Explanation:

i hope you helpful

Answer 2

Answer:

It's Pretty Simple you will understand.

just used if,else and while loop concept.

Explanation:

import java.util.Scanner;

public class SumPattern {

public static void main(String[] args){

Scanner s=new Scanner(System.in);

int n=s.nextInt();

int i=1;

int sum=i;    

  while(i<=n){

int t=1;    //starting number    

  int j=1;

while(j<=i){                    

         if(t<i){

System.out.print(t+"+");            

   t++;                                          

   j++;

 }              

else{            

       System.out.print(t+"="+sum);            

        j++;

                      }

          }        

   System.out.println();    

      i++;      

     sum=sum+i;

        }

    }

}

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