Sort Colors — LeetCode #75 | Python Algorithm Visualization
on channel: Benabub
Step-by-step algorithm visualization for LeetCode #75 (Sort Colors). The solution uses the Dutch National Flag algorithm with three pointers to partition the array in-place in a single pass. Elements equal to 0 are swapped to the left boundary, 2s are swapped to the right boundary, and 1s naturally settle in the middle.
Complexity Analysis:
Time Complexity: O(n) — each element is processed at most once, with mid and boundaries converging in a single traversal.
Space Complexity: O(1) — sorting is performed in-place without any additional data structures.
Timestamps:
0:00 — Three-Pointer Logic & Setup
0:12 — Main Cycle
1:22 — Array Sorted
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