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A Range Module is a module that tracks ranges of numbers. Design a data structure to track the ranges represented as half-open intervals and query abo 阅读全文
posted @ 2021-07-05 07:30
北叶青藤
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You are a hiker preparing for an upcoming hike. You are given heights, a 2D array of size rows x columns, where heights[row][col] represents the heigh 阅读全文
posted @ 2021-07-05 07:23
北叶青藤
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Given strings s1 and s2, return the minimum contiguous substring part of s1, so that s2 is a subsequence of the part. If there is no such window in s1 阅读全文
posted @ 2021-07-05 03:31
北叶青藤
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Given a rows x cols screen and a sentence represented as a list of strings, return the number of times the given sentence can be fitted on the screen. 阅读全文
posted @ 2021-07-05 01:28
北叶青藤
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