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This question is about implementing a basic elimination algorithm for Candy Crush. Given an m x n integer array board representing the grid of candy w 阅读全文
posted @ 2025-11-03 06:00
北叶青藤
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Given an array arr of positive integers sorted in a strictly increasing order, and an integer k. Return the kth positive integer that is missing from 阅读全文
posted @ 2025-01-09 09:39
北叶青藤
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Description Given two nodes of a binary tree p and q, return their lowest common ancestor (LCA). Each node will have a reference to its parent node. T 阅读全文
posted @ 2024-12-28 06:07
北叶青藤
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You are given a string s and an integer k. You can choose any character of the string and change it to any other uppercase English character. You can 阅读全文
posted @ 2024-12-27 02:04
北叶青藤
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his is an interactive problem. You are given an array of unique strings wordlist where wordlist[i] is 6 letters long, and one word in this list is cho 阅读全文
posted @ 2021-07-06 11:37
北叶青藤
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You are given a string s representing an attendance record for a student where each character signifies whether the student was absent, late, or prese 阅读全文
posted @ 2021-07-06 11:04
北叶青藤
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A Range Module is a module that tracks ranges of numbers. Design a data structure to track the ranges represented as half-open intervals and query abo 阅读全文
posted @ 2021-07-05 07:30
北叶青藤
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You are a hiker preparing for an upcoming hike. You are given heights, a 2D array of size rows x columns, where heights[row][col] represents the heigh 阅读全文
posted @ 2021-07-05 07:23
北叶青藤
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Given strings s1 and s2, return the minimum contiguous substring part of s1, so that s2 is a subsequence of the part. If there is no such window in s1 阅读全文
posted @ 2021-07-05 03:31
北叶青藤
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Given a rows x cols screen and a sentence represented as a list of strings, return the number of times the given sentence can be fitted on the screen. 阅读全文
posted @ 2021-07-05 01:28
北叶青藤
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