Update BullsAndCows.java

Author: sp995

src/main/java/com/thealgorithms/others/BullsAndCows.java

@@ -1 +1,21 @@
+class BullsAndCows {
+  public String getHint(String secret, String guess) {
+    int A = 0;
+    int B = 0;
+    int[] count1 = new int[10];
+    int[] count2 = new int[10];
 
+    for (int i = 0; i < secret.length(); ++i)
+      if (secret.charAt(i) == guess.charAt(i))
+        ++A;
+      else {
+        ++count1[secret.charAt(i) - '0'];
+        ++count2[guess.charAt(i) - '0'];
+      }
+
+    for (int i = 0; i < 10; ++i)
+      B += Math.min(count1[i], count2[i]);
+
+    return String.valueOf(A) + "A" + String.valueOf(B) + "B";
+  }
+}