1351. Count Negative Numbers in a Sorted Matrix-统计有序矩阵中的负数
Given a m x n matrix grid which is sorted in non-increa... » 阅读全文
1346. Check If N and Its Double Exist-检查整数及其两倍数是否存在
Given an array arr of integers, check if there exists t... » 阅读全文
1342. Number of Steps to Reduce a Number to Zero-将数字变成 0 的操作次数
Given a non-negative integer num, return the number of ... » 阅读全文
1337. The K Weakest Rows in a Matrix-矩阵中战斗力最弱的 K 行
You are given an m x n binary matrix mat of 1’s (... » 阅读全文
1331. Rank Transform of an Array-数组序号转换
Given an array of integers arr, replace each element wi... » 阅读全文
1266. Minimum Time Visiting All Points-访问所有点的最小时间
On a 2D plane, there are n points with integer coordina... » 阅读全文
1323. Maximum 69 Number-6 和 9 组成的最大数字
Given a positive integer num consisting only of digits ... » 阅读全文
1317. Convert Integer to the Sum of Two No-Zero Integers-将整数转换为两个无零整数的和
Given an integer n. No-Zero integer is a positive integ... » 阅读全文
1313. Decompress Run-Length Encoded List-解压缩编码列表
We are given a list nums of integers representing a lis... » 阅读全文
1309. Decrypt String from Alphabet to Integer Mapping-解码字母到整数映射
Given a string s formed by digits (‘0’ R... » 阅读全文