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Posts Tagged “heap”

Sort Characters By Frequency solution leetcode

Given a string s, sort it in decreasing order based on the frequency of the characters. The frequency of a character is the number of times it appears in the string...

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Find kth largest element in an array

The other day I stumble upon the question to find the kth largest element in the array. At first glance, I thought the solution was trivial. But later I thought that there are multiple ways to achieve efficient solution...

Continue reading → algorithm ruby heap max-heap projects