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Excel Sheet Column Number Given a string columnTitle that represents the column title as appears in an Excel sheet, return its corresponding column nu 阅读全文
posted @ 2023-01-09 22:07
iyiluo
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Implement Stack using Queues Implement a last-in-first-out (LIFO) stack using only two queues. The implemented stack should support all the functions 阅读全文
posted @ 2023-01-09 22:06
iyiluo
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Palindrome Linked List Given the head of a singly linked list, return true if it is a palindrome or false otherwise. Example 1: Input: head = [1,2,2,1 阅读全文
posted @ 2023-01-09 22:06
iyiluo
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