摘要：
Given a picture consisting of black and white pixels, and a positive integer N, find the number of black pixels located at some specific row R and col 阅读全文
posted @ 2017-09-26 10:36
Jimmy_Cheng
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摘要：
Given an array of integers and an integer k, you need to find the number of unique k-diff pairs in the array. Here a k-diff pair is defined as an inte 阅读全文
posted @ 2017-09-26 06:16
Jimmy_Cheng
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