随笔分类 - leetcode
摘要：Flood Fill An image is represented by an m x n integer grid image where image[i][j] represents the pixel value of the image. You are also given three
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摘要：Convert Integer to the Sum of Two No-Zero Integers No-Zero integer is a positive integer that does not contain any 0 in its decimal representation. Gi
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摘要：Complement of Base 10 Integer The complement of an integer is the integer you get when you flip all the 0's to 1's and all the 1's to 0's in its binar
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摘要：Duplicate Zeros Given a fixed-length integer array arr, duplicate each occurrence of zero, shifting the remaining elements to the right. Note that ele
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摘要：Find the Distance Value Between Two Arrays Given two integer arrays arr1 and arr2, and the integer d, return the distance value between the two arrays
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摘要：Check If All 1's Are at Least Length K Places Away Given an binary array nums and an integer k, return true if all 1's are at least k places away from
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摘要：Number of Students Doing Homework at Given Time Given two integer arrays startTime and endTime and given an integer queryTime. The ith student started
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摘要：Running Sum of 1d Array Given an array nums. We define a running sum of an array as runningSum[i] = sum(nums[0]…nums[i]). Return the running sum of nu
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摘要：Path Crossing Given a string path, where path[i] = 'N', 'S', 'E' or 'W', each representing moving one unit north, south, east, or west, respectively.
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摘要：Count Odd Numbers in an Interval Range Given two non-negative integers low and high. Return the count of odd numbers between low and high (inclusive).
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摘要：Make The String Great Given a string s of lower and upper case English letters. A good string is a string which doesn't have two adjacent characters s
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摘要：Squares of a Sorted Array Given an integer array nums sorted in non-decreasing order, return an array of the squares of each number sorted in non-decr
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摘要：Remove Outermost Parentheses A valid parentheses string is either empty "", "(" + A + ")", or A + B, where A and B are valid parentheses strings, and
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摘要：Relative Sort Array Given two arrays arr1 and arr2, the elements of arr2 are distinct, and all elements in arr2 are also in arr1. Sort the elements of
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摘要：Greatest Common Divisor of Strings For two strings s and t, we say "t divides s" if and only if s = t + ... + t (i.e., t is concatenated with itself o
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摘要：Create Target Array in the Given Order Given two arrays of integers nums and index. Your task is to create target array under the following rules: Ini
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摘要：Find Lucky Integer in An Array Given an array of integers arr, a lucky integer is an integer that has a frequency in the array equal to its value. Ret
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摘要：String Matching in an Array Given an array of string words, return all strings in words that is a substring of another word. You can return the answer
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摘要：Rectangle Overlap An axis-aligned rectangle is represented as a list [x1, y1, x2, y2], where (x1, y1) is the coordinate of its bottom-left corner, and
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摘要：Shuffle String You are given a string s and an integer array indices of the same length. The string s will be shuffled such that the character at the
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