Added NutsAndBolt Problem Using Hashmap Approach in java

Author: FinalGetsugaa

NutBoltWithHashmap.java

@@ -0,0 +1,34 @@
+import java.util.Arrays;
+import java.util.HashMap;
+
+public class NutBoltWithHashmap{
+
+    public static void domatch(char[] nuts, char[] bolts) {
+        
+        //Create a HashMap for nuts, nut as key and its position as value
+        HashMap<Character, Integer> map = new HashMap<Character, Integer>();
+        for (int j = 0; j < nuts.length; j++) {
+            map.put(nuts[j], j);
+        }
+
+        //for each bolt , check for the nut in map
+        for (int j = 0; j < bolts.length; j++) {
+            char bolt = bolts[j];
+            if (map.containsKey(bolt)) {
+                nuts[j] = bolts[j];
+            } else {
+                System.out.println("for bolt " + bolt + " no nut is present.");
+                return;
+            }
+        }
+        System.out.println(" Matched nuts and bolts are: ");
+        System.out.println(Arrays.toString(nuts));
+        System.out.println(Arrays.toString(bolts));
+    }
+
+    public static void main(String[] args) {
+        char[] nuts = {'$', '%', '&', 'x', '@'};
+        char[] bolts = {'%', '@', 'x', '$', '&'};
+        domatch(nuts, bolts);
+    }
+}