Given an array S of n integers, Write a Java Program to find out whether there exists a pair of integers in S whose sum is equal to a given integer x.

Given an array S of n integers, Write a Java Program to find out whether there exists a pair of integers in S whose sum is equal to a given integer x.

import java.util.Scanner; 

class pairSum{ 

public static void main(String[] args) { 

Scanner sc = new Scanner(System.in); 

System.out.println("Enter the number : "); 

int n = sc.nextInt(); 

int a[]={1,2,3,6,10}; 

checkPair(a, n); 

sc.close(); 

}

public static void checkPair(int A[],int x){ 

for(int i=0;i<(A.length-1);i++){ 

for(int j=i+1;j<A.length;j++){ 

if(A[i]+A[j]==x) 

System.out.println("Pair with a given sum "+x+" is ("+A[i]+" + "+A[j]+")"); 

} 

} 

} 

}

OUTPUT:

Enter the number : 

3

Pair with a given sum 3 is (1+2)