Given an array nums with n objects colored red, white, or blue, sort them in-place 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.
Examples
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]
Constraints
n == nums.length
1 <= n <= 300
nums[i] is either 0, 1, or 2.
Follow Up
Could you come up with a one-pass algorithm using only constant extra space?
75. Sort Colors
Medium
30 Points
Array
Two Pointers
Sorting
Given an array nums with n objects colored red, white, or blue, sort them in-place 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.
Examples
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]
Constraints
n == nums.length
1 <= n <= 300
nums[i] is either 0, 1, or 2.
Follow Up
Could you come up with a one-pass algorithm using only constant extra space?