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g0001_0100.s0075_sort_colors.readme.md Maven / Gradle / Ivy

75\. Sort Colors

Medium

Given an array `nums` with `n` objects colored red, white, or blue, sort them **[in-place](https://en.wikipedia.org/wiki/In-place_algorithm)** so that objects of the same color are adjacent, with the colors in the order red, white, and blue.

We will use the integers `0`, `1`, and `2` to represent the color red, white, and blue, respectively.

You must solve this problem without using the library's sort function.

**Example 1:**

**Input:** nums = [2,0,2,1,1,0]

**Output:** [0,0,1,1,2,2] 

**Example 2:**

**Input:** nums = [2,0,1]

**Output:** [0,1,2] 

**Example 3:**

**Input:** nums = [0]

**Output:** [0] 

**Example 4:**

**Input:** nums = [1]

**Output:** [1] 

**Constraints:**

*   `n == nums.length`
*   `1 <= n <= 300`
*   `nums[i]` is `0`, `1`, or `2`.

**Follow up:** Could you come up with a one-pass algorithm using only constant extra space?