LeetCode - 随笔分类(第3页) - onlyblues

打地鼠

摘要：打地鼠欢迎各位勇者来到力扣城，本次试炼主题为「打地鼠」。勇者面前有一个大小为 3*3 的打地鼠游戏机，地鼠将随机出现在各个位置，moles[i] = [t,x,y] 表示在第 t 秒会有地鼠出现在 (x,y) 位置上，并于第 t+1 秒该地鼠消失。勇者有一把可敲打地鼠的锤子，初始时刻（即第 0 阅读全文

posted @ 2022-12-16 17:45 onlyblues 阅读(125) 评论(0) 推荐(0) 编辑

Count Subarrays With Median K

摘要：Count Subarrays With Median K You are given an array nums of size

n

$n$ consisting of distinct integers from

1

$1$ to

n

$n$ and a positive integer

k

$k$ . Retu 阅读全文

posted @ 2022-11-27 14:04 onlyblues 阅读(73) 评论(0) 推荐(0) 编辑

Number of Beautiful Partitions

摘要：Number of Beautiful Partitions You are given a string s that consists of the digits '1' to '9' and two integers k and minLength. A partition of s is c 阅读全文

posted @ 2022-11-20 15:38 onlyblues 阅读(22) 评论(0) 推荐(0) 编辑

Maximum Number of Non-overlapping Palindrome Substrings

摘要：Maximum Number of Non-overlapping Palindrome Substrings You are given a string s and a positive integer k . Select a set of non-overlapping substrings 阅读全文

posted @ 2022-11-14 20:38 onlyblues 阅读(30) 评论(0) 推荐(0) 编辑

Minimum Number of Operations to Sort a Binary Tree by Level

摘要：Minimum Number of Operations to Sort a Binary Tree by Level You are given the root of a binary tree with unique values. In one operation, you can choo 阅读全文

posted @ 2022-11-14 20:10 onlyblues 阅读(47) 评论(0) 推荐(0) 编辑

Next Greater Element IV（附带个人感想）

摘要：Next Greater Element IV You are given a 0-indexed array of non-negative integers nums . For each integer in nums , you must find its respective second 阅读全文

posted @ 2022-10-30 23:20 onlyblues 阅读(64) 评论(0) 推荐(0) 编辑

Count Subarrays With Fixed Bounds

摘要：Count Subarrays With Fixed Bounds You are given an integer array nums and two integers minK and maxK . A fixed-bound subarray of nums is a subarray th 阅读全文

posted @ 2022-10-16 16:58 onlyblues 阅读(38) 评论(0) 推荐(0) 编辑

Minimize Maximum of Array

摘要：Minimize Maximum of Array You are given a 0-indexed array nums comprising of

n

$n$ non-negative integers. In one operation, you must: Choose an integer 阅读全文

posted @ 2022-10-16 15:13 onlyblues 阅读(109) 评论(0) 推荐(0) 编辑

Minimum Swaps To Make Sequences Increasing

摘要：Minimum Swaps To Make Sequences Increasing You are given two integer arrays of the same length nums1 and nums2 . In one operation, you are allowed to 阅读全文

posted @ 2022-10-10 21:08 onlyblues 阅读(60) 评论(0) 推荐(0) 编辑

Using a Robot to Print the Lexicographically Smallest String

摘要：Using a Robot to Print the Lexicographically Smallest String You are given a string s and a robot that currently holds an empty string t . Apply one o 阅读全文

posted @ 2022-10-09 23:28 onlyblues 阅读(47) 评论(0) 推荐(0) 编辑

Maximum Deletions on a String

摘要：Maximum Deletions on a String You are given a string s consisting of only lowercase English letters. In one operation, you can: Delete the entire stri 阅读全文

posted @ 2022-10-06 17:04 onlyblues 阅读(43) 评论(0) 推荐(0) 编辑

单调栈的本质与应用

摘要：单调栈的定义与证明前言最近领悟到了单调栈的本质，特此来记录一下我的理解。单调栈主要用来解决这样一类问题，当枚举到下标

i

$i$ ，要求在下标

i

$i$ 之前小于

/

$/$ 大于

v a l

$val$ 的数的下标中，找到最小

/

$/$ 最大的下标位置。一共有四种不同的情况，下面来证明在这四种情况中，栈内维护的元素始终单调递增或单调阅读全文

posted @ 2022-09-28 18:55 onlyblues 阅读(862) 评论(0) 推荐(0) 编辑

Find All Good Indices

摘要：Find All Good Indices You are given a 0-indexed integer array nums of size

n

$n$ and a positive integer

k

$k$ . We call an index

i

$i$ in the range $k \leq i 阅读全文

posted @ 2022-09-25 16:33 onlyblues 阅读(20) 评论(0) 推荐(0) 编辑

Longest Subarray With Maximum Bitwise AND

摘要：Longest Subarray With Maximum Bitwise AND You are given an integer array nums of size

n

$n$ . Consider a non-empty subarray from nums that has the maximu 阅读全文

posted @ 2022-09-25 16:07 onlyblues 阅读(45) 评论(0) 推荐(0) 编辑

Sum of Prefix Scores of Strings

摘要：Sum of Prefix Scores of Strings You are given an array words of sizeco

n

$n$ sisting of non-empty strings. We define the score of a string word as the n 阅读全文

posted @ 2022-09-19 20:43 onlyblues 阅读(64) 评论(0) 推荐(0) 编辑

Minimum Money Required Before Transactions

摘要：Minimum Money Required Before Transactions You are given a 0-indexed 2D integer array transactions , where transactions[i] = [costi, cashbacki] . The 阅读全文

posted @ 2022-09-19 19:44 onlyblues 阅读(32) 评论(0) 推荐(0) 编辑

Smallest Subarrays With Maximum Bitwise OR

摘要：Smallest Subarrays With Maximum Bitwise OR You are given a 0-indexed array nums of length

n

$n$ , consisting of non-negative integers. For each index

i

$i$ 阅读全文

posted @ 2022-09-18 19:36 onlyblues 阅读(56) 评论(0) 推荐(0) 编辑

线段树优化最长上升子序列问题

摘要：最长上升子序列给定一个长度为

N

$N$ 的数列，求数值严格单调递增的子序列的长度最长是多少。输入格式第一行包含整数

N

$N$ 。第二行包含

N

$N$ 个整数，表示完整序列。输出格式输出一个整数，表示最大长度。数据范围

1 \leq N \leq 1000

$1 \leq N \leq 1000$ ，${−10}^{9} \leq \ 阅读全文

posted @ 2022-09-13 16:24 onlyblues 阅读(888) 评论(0) 推荐(0) 编辑

Evaluate Division

摘要：Evaluate Division You are given an array of variable pairs equations and an array of real numbers values , where equations[i] = [Ai, Bi] and values[i] 阅读全文

posted @ 2022-09-07 21:23 onlyblues 阅读(22) 评论(0) 推荐(0) 编辑

Count Unique Characters of All Substrings of a Given String

摘要：Count Unique Characters of All Substrings of a Given String Let's define a function countUniqueChars(s) that returns the number of unique characters o 阅读全文

posted @ 2022-09-06 16:16 onlyblues 阅读(36) 评论(0) 推荐(0) 编辑

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