Given that the elements in an array $arr, array are from 0 to N < = $N < = 1, find out whether there are any duplicate elements, which requires a time complexity of O (n), and a space complexity of O (1).

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given that the elements in an array $arr, array are 0 to NMagi N < = $NMMI 1, find out whether there are any duplicate elements. The time complexity is O (n), and the space complexity is O (1)

Php time-complexity search-and-replace array algorithm

Mar.09,2021

array_count_values ()?

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