Merge pull request AllAlgorithms#199 from khusi-anu/master

update problem

Author: abranhe

data-structures/hashmaps/pairs_with_difference_K.cpp

@@ -0,0 +1,48 @@
+/*
+
+You are given with an array of integers and an integer K. 
+Write a program to find and print all pairs which have difference K.
+
+Sample Input 1 :
+4 
+5 1 2 4
+3
+Sample Output 1 :
+2 5
+1 4
+*/
+
+
+#include<iostream>
+using namespace std;
+
+
+void printPairs(int *input, int n, int k) {
+
+ int hash[10000];
+ for(int i = 0;i < n;i++)
+ {
+ for(int j = i+1; j < n;j++)
+ {
+ if((input[i] - input[j]) == k)
+ cout << input[j] << " " << input[i] << endl;
+ else if((input[j] - input[i]) == k)
+	cout << input[i] << " " << input[j] << endl;
+ }
+ }
+
+}
+
+
+int main() {
+int n;
+cin >> n;
+int *input = new int[n];
+for(int i = 0; i < n; i++){
+cin >> input[i];
+}
+int k;
+cin >> k;
+printPairs(input, n, k);
+}
+