随笔分类 - leetcode
摘要：Matrix Diagonal Sum Given a square matrix mat, return the sum of the matrix diagonals. Only include the sum of all the elements on the primary diagona
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摘要：Three Consecutive Odds Given an integer array arr, return true if there are three consecutive odd numbers in the array. Otherwise, return false. Examp
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摘要：Number of Good Pairs Given an array of integers nums, return the number of good pairs. A pair (i, j) is called good if nums[i] == nums[j] and i < j. E
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摘要：Maximum Product of Two Elements in an Array Given the array of integers nums, you will choose two different indices i and j of that array. Return the
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摘要：Check If a Word Occurs As a Prefix of Any Word in a Sentence Given a sentence that consists of some words separated by a single space, and a searchWor
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摘要：Count Integers With Even Digit Sum Given a positive integer num, return the number of positive integers less than or equal to num whose digit sums are
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摘要：Count Operations to Obtain Zero You are given two non-negative integers num1 and num2. In one operation, if num1 >= num2, you must subtract num2 from
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摘要：Get Maximum in Generated Array You are given an integer n. A 0-indexed integer array nums of length n + 1 is generated in the following way: nums[0] =
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摘要：Find the Highest Altitude 思路一：直接遍历 public int largestAltitude(int[] gain) { int val = 0; int max = val; for (int i : gain) { val += i; max = Math.max(
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摘要：Check If Two String Arrays are Equivalent 思路一：把第一个数组入队列，然后遍历比较第二个数组 public boolean arrayStringsAreEqual(String[] word1, String[] word2) { Deque<Charac
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摘要：Pass the Pillow ``` There are n people standing in a line labeled from 1 to n. The first person in the line is holding a pillow initially. Every secon
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摘要：Water Bottles ``` There are numBottles water bottles that are initially full of water. You can exchange numExchange empty water bottles from the marke
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摘要：Defuse the Bomb ``` You have a bomb to defuse, and your time is running out! Your informer will provide you with a circular array code of length of n
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摘要：Slowest Key ``` You have a bomb to defuse, and your time is running out! Your informer will provide you with a circular array code of length of n and
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摘要：Find Numbers with Even Number of Digits Given an array nums of integers, return how many of them contain an even number of digits. Example 1: Input: n
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摘要：Distribute Candies to People We distribute some number of candies, to a row of n = num_people people in the following way: We then give 1 candy to the
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摘要：Partition Array Into Three Parts With Equal Sum Given an array of integers arr, return true if we can partition the array into three non-empty parts w
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摘要：Number of Equivalent Domino Pairs Given a list of dominoes, dominoes[i] = [a, b] is equivalent to dominoes[j] = [c, d] if and only if either (a == c a
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摘要：Maximum Score After Splitting a String Given a string s of zeros and ones, return the maximum score after splitting the string into two non-empty subs
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摘要：Check If it is a Straight Line You are given an array coordinates, coordinates[i] = [x, y], where [x, y] represents the coordinate of a point. Check i
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