Merge pull request #212 from AbbeyIT/main

feat: added left rotation in Java

Author: admirerr

Java/arrays/LeftRotation.java

@@ -0,0 +1,33 @@
+import java.util.Arrays;
+
+public class LeftRotation {
+    public static void main(String[] args) {
+        int[] arr = {1, 2, 3, 4, 5};
+        int rotations = 2; // Number of positions to rotate left
+
+        System.out.println("Original array: " + Arrays.toString(arr));
+
+        leftRotate(arr, rotations);
+
+        System.out.println("Array after left rotation: " + Arrays.toString(arr));
+    }
+
+    public static void leftRotate(int[] arr, int rotations) {
+        int n = arr.length;
+        
+        rotations = rotations % n;
+
+        int[] temp = new int[rotations];
+        for (int i = 0; i < rotations; i++) {
+            temp[i] = arr[i];
+        }
+
+        for (int i = rotations; i < n; i++) {
+            arr[i - rotations] = arr[i];
+        }
+
+        for (int i = 0; i < rotations; i++) {
+            arr[n - rotations + i] = temp[i];
+        }
+    }
+}