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g0801_0900.s0832_flipping_an_image.readme.md Maven / Gradle / Ivy

832\. Flipping an Image

Easy

Given an `n x n` binary matrix `image`, flip the image **horizontally**, then invert it, and return _the resulting image_.

To flip an image horizontally means that each row of the image is reversed.

*   For example, flipping `[1,1,0]` horizontally results in `[0,1,1]`.

To invert an image means that each `0` is replaced by `1`, and each `1` is replaced by `0`.

*   For example, inverting `[0,1,1]` results in `[1,0,0]`.

**Example 1:**

**Input:** image = [[1,1,0],[1,0,1],[0,0,0]]

**Output:** [[1,0,0],[0,1,0],[1,1,1]]

**Explanation:**

First reverse each row: [[0,1,1],[1,0,1],[0,0,0]].

Then, invert the image: [[1,0,0],[0,1,0],[1,1,1]] 

**Example 2:**

**Input:** image = [[1,1,0,0],[1,0,0,1],[0,1,1,1],[1,0,1,0]]

**Output:** [[1,1,0,0],[0,1,1,0],[0,0,0,1],[1,0,1,0]]

**Explanation:**

First reverse each row: [[0,0,1,1],[1,0,0,1],[1,1,1,0],[0,1,0,1]].

Then invert the image: [[1,1,0,0],[0,1,1,0],[0,0,0,1],[1,0,1,0]] 

**Constraints:**

*   `n == image.length`
*   `n == image[i].length`
*   `1 <= n <= 20`
*   `images[i][j]` is either `0` or `1`.