摘要：
Given two strings A and B, find the minimum number of times A has to be repeated such that B is a substring of it. If no such solution, return 1. For 阅读全文
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Sort a linked list in O(n log n) time using constant space complexity. Example 1: Input: 4 2 1 3 Output: 1 2 3 4 Example 2: Input: 1 5 3 4 0 Output: 1 阅读全文
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Sort a linked list using insertion sort. A graphical example of insertion sort. The partial sorted list (black) initially contains only the first elem 阅读全文
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Winter is coming! Your first job during the contest is to design a standard heater with fixed warm radius to warm all the houses. Now, you are given p 阅读全文