2022-10-30 update: added "832. Flipping an Image" (#135)

Author: fartem

Diff for: README.md

@@ -159,6 +159,7 @@ Profile on LeetCode: [fartem](https://leetcode.com/fartem/).
 | 819. Most Common Word                                                    | [Link](https://leetcode.com/problems/most-common-word/)                                                   | [Link](./src/main/java/com/smlnskgmail/jaman/leetcodejava/easy/MostCommonWord.java)                                               |
 | 821. Shortest Distance to a Character                                    | [Link](https://leetcode.com/problems/shortest-distance-to-a-character/)                                   | [Link](./src/main/java/com/smlnskgmail/jaman/leetcodejava/easy/ShortestDistanceToACharacter.java)                                 |
 | 830. Positions of Large Groups                                           | [Link](https://leetcode.com/problems/positions-of-large-groups/)                                          | [Link](./src/main/java/com/smlnskgmail/jaman/leetcodejava/easy/PositionsOfLargeGroups.java)                                       |
+| 832. Flipping an Image                                                   | [Link](https://leetcode.com/problems/flipping-an-image/)                                                  | [Link](./src/main/java/com/smlnskgmail/jaman/leetcodejava/easy/FlippingAnImage.java)                                              |
 | 844. Backspace String Compare                                            | [Link](https://leetcode.com/problems/backspace-string-compare/)                                           | [Link](./src/main/java/com/smlnskgmail/jaman/leetcodejava/easy/BackspaceStringCompare.java)                                       |
 | 859. Buddy Strings                                                       | [Link](https://leetcode.com/problems/buddy-strings/)                                                      | [Link](./src/main/java/com/smlnskgmail/jaman/leetcodejava/easy/BuddyStrings.java)                                                 |
 | 860. Lemonade Change                                                     | [Link](https://leetcode.com/problems/lemonade-change/)                                                    | [Link](./src/main/java/com/smlnskgmail/jaman/leetcodejava/easy/LemonadeChange.java)                                               |

Diff for: src/main/java/com/smlnskgmail/jaman/leetcodejava/easy/FlippingAnImage.java

@@ -0,0 +1,25 @@
+package com.smlnskgmail.jaman.leetcodejava.easy;
+
+// https://leetcode.com/problems/flipping-an-image/
+public class FlippingAnImage {
+
+    private final int[][] input;
+
+    public FlippingAnImage(int[][] input) {
+        this.input = input;
+    }
+
+    public int[][] solution() {
+        int c = input[0].length;
+        for (int[] row : input) {
+            for (int i = 0; i < (c + 1) / 2; i++) {
+                int temp = row[i] ^ 1;
+                int index = c - i - 1;
+                row[i] = row[index] ^ 1;
+                row[index] = temp;
+            }
+        }
+        return input;
+    }
+
+}

Diff for: src/test/java/com/smlnskgmail/jaman/leetcodejava/easy/FlippingAnImageTest.java

@@ -0,0 +1,20 @@
+package com.smlnskgmail.jaman.leetcodejava.easy;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertArrayEquals;
+
+public class FlippingAnImageTest {
+
+    @Test
+    public void defaultTest() {
+        int[][] correct = new int[][]{{1, 0, 0}, {0, 1, 0}, {1, 1, 1}};
+        int[][] solution = new FlippingAnImage(
+                new int[][]{{1, 1, 0}, {1, 0, 1}, {0, 0, 0}}
+        ).solution();
+        for (int i = 0; i < correct.length; i++) {
+            assertArrayEquals(correct[i], solution[i]);
+        }
+    }
+
+}