Question: Write a comparator for nonnegative integers that determines order based on the number of 1s in each integers binary expansion, so that i < j

Write a comparator for nonnegative integers that determines order based on the number of 1’s in each integer’s binary expansion, so that i < j if the number of 1’s in the binary representation of i is less than the number of 1’s in the binary representation of j.

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