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How to Find Pair Elements In an Array In Java With Example Program?
package com.softwaretestingblog.programs; public class PairOfElementsInArray { 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);*/ } }
Output:
Pairs of elements whose sum is 10 are : 4 + 6 = 10 5 + 5 = 10 -10 + 20 = 10
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