摘要：
You are given the head of a linked list, and an integer k. Return the head of the linked list after swapping the values of the kth node from the begin 阅读全文
posted @ 2021-03-17 05:58
CNoodle
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摘要：
Given two strings s and t, return the number of distinct subsequences of s which equals t. A string's subsequence is a new string formed from the orig 阅读全文
posted @ 2021-03-17 02:35
CNoodle
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