Merge pull request matthewsamuel95#609 from ibnahmadbello/patch-2

Create HammingDistance.java

Author: matthewsamuel95

String/Hamming distance/HammingDistance.java

@@ -0,0 +1,22 @@
+public class HammingDistance{
+	public static vois main(String args[]){
+		System.out.println(getHammingDistance("1011101", "1001001")); # Output 2
+		System.out.println(getHammingDistance("Welcome", "welcome")); # Output 0
+		System.out.println(getHammingDistance("hacking", "cryptography")) # Output "String are not of equal length."
+	}
+	
+	private static int getHammingDistance(String str1, String str2){
+        int distance = 0;
+        if (str1.length() != str2.length()) {
+            System.out.println("String are not of equal length.");
+            System.exit(0);
+        } else {            
+            for (int i = 0; i < str1.length(); i++) {
+                if (str1.toLowerCase().charAt(i) != str2.toLowerCase().charAt(i)) {
+                    distance++;
+                }
+            }            
+        }
+        return distance;
+    }
+}