2020年4月29日
581. Shortest Unsorted Continuous Subarray
摘要： Problem : Given an integer array, you need to find one continuous subarray that if you only sort this subarray in ascending order, then the whole arra 阅读全文
posted @ 2020-04-29 22:26 littledy 阅读(97) 评论(0) 推荐(0) 编辑
3. Longest Substring Without Repeating Characters
摘要： Problem : Given a string, find the length of the longest substring without repeating characters. Example 1: Example 2: Example 3: 思路 ： Solution (C++) 阅读全文
posted @ 2020-04-29 21:10 littledy 阅读(90) 评论(0) 推荐(0) 编辑
2020年4月23日
239. Sliding Window Maximum
摘要： Problem : Given an array nums, there is a sliding window of size k which is moving from the very left of the array to the very right. You can only see 阅读全文
posted @ 2020-04-23 13:52 littledy 阅读(71) 评论(0) 推荐(0) 编辑
946. Validate Stack Sequences
摘要： Problem : Given two sequences pushed and popped with distinct values, return true if and only if this could have been the result of a sequence of push 阅读全文
posted @ 2020-04-23 08:58 littledy 阅读(85) 评论(0) 推荐(0) 编辑
2020年4月22日
206. Reverse Linked List
摘要： Problem : Reverse a singly linked list. Example: Follow up: A linked list can be reversed either iteratively or recursively. Could you implement both? 阅读全文
posted @ 2020-04-22 22:59 littledy 阅读(85) 评论(0) 推荐(0) 编辑
1351. Count Negative Numbers in a Sorted Matrix
摘要： Problem : Given a matrix which is sorted in non increasing order both row wise and column wise. Return the number of negative numbers in . Example 1: 阅读全文
posted @ 2020-04-22 13:24 littledy 阅读(165) 评论(0) 推荐(0) 编辑
895. Maximum Frequency Stack
摘要： Problem : Implement FreqStack, a class which simulates the operation of a stack like data structure. FreqStack has two functions: push(int x), which p 阅读全文
posted @ 2020-04-22 00:47 littledy 阅读(93) 评论(0) 推荐(0) 编辑
2020年4月21日
155. Min Stack
摘要： Problem : Design a stack that supports push, pop, top, and retrieving the minimum element in constant time. push(x) Push element x onto stack. pop() R 阅读全文
posted @ 2020-04-21 23:25 littledy 阅读(102) 评论(0) 推荐(0) 编辑
225. Implement Stack using Queues
摘要： Problem : Implement the following operations of a stack using queues. push(x) Push element x onto stack. pop() Removes the element on top of the stack 阅读全文
posted @ 2020-04-21 22:28 littledy 阅读(93) 评论(0) 推荐(0) 编辑
1381. Design a Stack With Increment Operation
摘要： Problem : Design a stack which supports the following operations. Implement the CustomStack class: CustomStack(int maxSize) Initializes the object wit 阅读全文
posted @ 2020-04-21 21:31 littledy 阅读(178) 评论(0) 推荐(0) 编辑
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