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Leetcode 75. Sort Colors

Reorder an array of values 0, 1, and 2 in-place so all 0s come first, then 1s, then 2s (the Dutch National Flag problem); aim for a one-pass, constant-extra-space solution without using built-in sort.

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Amazon

Google

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Level

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Late October, 2024

Amazon

Junior

Sort 0, 1, 2 (optimized to O(1) space and O(n) time)

Early October, 2024

Google

Intern

Color n houses with k colors where no adjacent houses can have the same color, given that the colors of the first and last houses are fixed

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