Added Solution to day 4 of July Leetcode Challenge

Author: shrinathjoshi

July Challenge/HammingDistance.java

@@ -0,0 +1,32 @@
+
+/**
+ * Problem Statement :-
+ * https://leetcode.com/explore/challenge/card/july-leetcoding-challenge/544/week-1-july-1st-july-7th/3381/
+ * 
+ * 
+ * Additional Reading:-
+ * https://www.techiedelight.com/brian-kernighans-algorithm-count-set-bits-integer/
+ * 
+ * 
+ * 
+ */
+
+public class HammingDistance {
+	public int hammingDistance(int x, int y) {
+		int count = 0;
+
+		int result = x ^ y;
+		while (result > 0) {
+			result = (result & result - 1);
+			count++;
+		}
+		return count;
+	}
+
+	public static void main(String[] args) {
+		int x = 1;
+		int y = 4;
+		System.out.println(new HammingDistance().hammingDistance(x, y));
+	}
+
+}