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Single-Loop Array Sorting
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Single-Loop Array Sorting

MediumPython

Problem

Sort through this array once using one loop

Given an array containing only 0, 1, and 2, sort it in ascending order in place. Use exactly one loop and constant extra space.

Function: def sort_colors(nums):

The function should modify nums directly and return the sorted array.

Constraints

  • 1 <= nums.length <= 1000
  • Each nums[i] is either 0, 1, or 2
  • The array must be modified in place
  • Use exactly one loop
  • Use O(1) extra space

Function Signature

def sort_colors(nums):
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