[Smart Solution] Count the number of occurrences of each element of an unordered array - time complexity O(n), space complexity O(1) - Code World

[Smart Solution] Count the number of occurrences of each element of an unordered array - time complexity O(n), space complexity O(1)

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[Smart Solution] Count the number of occurrences of each element of an unordered array - time complexity O(n), space complexity O(1)

Given an array of 0, 1, 2, arrange 0, 1, 2 in order, the space complexity is O(1), and the time complexity is O(n)

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time complexity and space complexity

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