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There is a matrix beforebefore with nn rows and mm columns. For each element in before before[i][j]before[i][j], we will use the following algorithm t 阅读全文
posted @ 2020-03-18 09:39
xuan_abc
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Given a string str and a dictionary dict, you need to find out which words in the dictionary are subsequences of the string and return those words.The 阅读全文
posted @ 2020-03-18 05:28
xuan_abc
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Given an array of integers and an integer k, you need to find the minimum size of continuous subarrays whose sum equals to k, and return its length. i 阅读全文
posted @ 2020-03-18 05:07
xuan_abc
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