Create Solution.java

Author: Jerring

solution/0832.Flipping an Image/Solution.java

@@ -0,0 +1,23 @@
+class Solution {
+    public int[][] flipAndInvertImage(int[][] A) {
+        for (int[] arr : A) {
+            reverse(arr, 0, arr.length - 1);
+            for (int i = 0; i < arr.length; ++i) {
+                arr[i] ^= 1;
+            }
+        }
+        return A;
+    }
+
+    private void reverse(int[] arr, int i, int j) {
+        while (i < j) {
+            swap(arr, i++, j--);
+        }
+    }
+
+    private void swap(int[] arr, int i, int j) {
+        int tmp = arr[i];
+        arr[i] = arr[j];
+        arr[j] = tmp;
+    }
+}