ElementPairSum.java

package arrays;

public class ElementPairSum {

	static void findThePairs(int inputArray[], int inputNumber)
    {
        System.out.println("Pairs of elements whose sum is "+inputNumber+" are : ");
 
        for (int i = 0; i < inputArray.length; i++)
        {
            for (int j = i+1; j < inputArray.length; j++)
            {
                if(inputArray[i]+inputArray[j] == inputNumber)
                {
                    System.out.println(inputArray[i]+" + "+inputArray[j]+" = "+inputNumber);
                }
            }
        }
    }
	
	public static void main(String[] args) {

		findThePairs(new int[] {4, 6, 5, -10, 8, 5, 20}, 10);
		 
        findThePairs(new int[] {4, -5, 9, 11, 25, 13, 12, 8}, 20);
 
        findThePairs(new int[] {12, 13, 40, 15, 8, 10, -15}, 25);
 
        findThePairs(new int[] {12, 23, 125, 41, -75, 38, 27, 11}, 50);
	}

}