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Delete Columns To Make Sorted You are given an array of n strings strs, all of the same length. The strings can be arranged such that there is one on 阅读全文
posted @ 2023-04-14 22:18
iyiluo
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Transpose Matrix Given a 2D integer array matrix, return the transpose of matrix. The transpose of a matrix is the matrix flipped over its main diagon 阅读全文
posted @ 2023-04-14 22:18
iyiluo
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Backspace String Compare Given two strings s and t, return true if they are equal when both are typed into empty text editors. '#' means a backspace c 阅读全文
posted @ 2023-04-14 22:18
iyiluo
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Positions of Large Groups In a string s of lowercase letters, these letters form consecutive groups of the same character. For example, a string like 阅读全文
posted @ 2023-04-14 22:18
iyiluo
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Largest Triangle Area Given an array of points on the X-Y plane points where points[i] = [xi, yi], return the area of the largest triangle that can be 阅读全文
posted @ 2023-04-14 22:17
iyiluo
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Number of Lines To Write String You are given a string s of lowercase English letters and an array widths denoting how many pixels wide each lowercase 阅读全文
posted @ 2023-04-14 22:17
iyiluo
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Toeplitz Matrix Given an m x n matrix, return true if the matrix is Toeplitz. Otherwise, return false. A matrix is Toeplitz if every diagonal from top 阅读全文
posted @ 2023-04-14 22:17
iyiluo
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Number of Days Between Two Dates Write a program to count the number of days between two dates. The two dates are given as strings, their format is YY 阅读全文
posted @ 2023-04-14 22:16
iyiluo
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Number of Steps to Reduce a Number to Zero Given an integer num, return the number of steps to reduce it to zero. In one step, if the current number i 阅读全文
posted @ 2023-04-14 22:16
iyiluo
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The K Weakest Rows in a Matrix You are given an m x n binary matrix mat of 1's (representing soldiers) and 0's (representing civilians). The soldiers 阅读全文
posted @ 2023-04-14 22:15
iyiluo
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