原文链接: https://leetcode-cn.com/problems/subtract-the-product-and-sum-of-digits-of-an-integer 英文原文Given an integer number n, return the difference between the product of its digits and the sum of its digits. Example 1: Input: n = 234 Output: 15 Explana…

原文链接: https://leetcode-cn.com/problems/group-the-people-given-the-group-size-they-belong-to 英文原文There are n people that are split into some unknown number of groups. Each person is labeled with a unique ID from 0 to n - 1. You are given an integer ar…

原文链接: https://leetcode-cn.com/problems/find-the-smallest-divisor-given-a-threshold 英文原文Given an array of integers nums and an integer threshold, we will choose a positive integer divisor, divide all the array by it, and sum the division's result. Fin…

原文链接: https://leetcode-cn.com/problems/minimum-number-of-flips-to-convert-binary-matrix-to-zero-matrix 英文原文Given a m x n binary matrix mat. In one step, you can choose one cell and flip it and all the four neighbors of it if they exist (Flip is chang…

原文链接: https://leetcode-cn.com/problems/convert-binary-number-in-a-linked-list-to-integer 英文原文Given head which is a reference node to a singly-linked list. The value of each node in the linked list is either 0 or 1. The linked list holds the binary re…

原文链接: https://leetcode-cn.com/problems/maximum-side-length-of-a-square-with-sum-less-than-or-equal-to-threshold 英文原文Given a m x n matrix mat and an integer threshold. Return the maximum side-length of a square with a sum less than or equal to thresho…

原文链接: https://leetcode-cn.com/problems/shortest-path-in-a-grid-with-obstacles-elimination 英文原文You are given an m x n integer matrix grid where each cell is either 0 (empty) or 1 (obstacle). You can move up, down, left, or right from and to an empty c…

原文链接: https://leetcode-cn.com/problems/find-numbers-with-even-number-of-digits 英文原文Given an array nums of integers, return how many of them contain an even number of digits. Example 1: Input: nums = [12,345,2,6,7896] Output: 2 Explanation: 12 contain…

原文链接: https://leetcode-cn.com/problems/divide-array-in-sets-of-k-consecutive-numbers 英文原文Given an array of integers nums and a positive integer k, find whether it is possible to divide this array into sets of k consecutive numbers. Return true if it …

原文链接: https://leetcode-cn.com/problems/maximum-number-of-occurrences-of-a-substring 英文原文Given a string s, return the maximum number of ocurrences of any substring under the following rules: The number of unique characters in the substring must be les…

原文链接: https://leetcode-cn.com/problems/maximum-candies-you-can-get-from-boxes 英文原文Given n boxes, each box is given in the format [status, candies, keys, containedBoxes] where: status[i]: an integer which is 1 if box[i] is open and 0 if box[i] is clos…

原文链接: https://leetcode-cn.com/problems/find-n-unique-integers-sum-up-to-zero 英文原文Given an integer n, return any array containing n unique integers such that they add up to 0. Example 1: Input: n = 5 Output: [-7,-1,1,3,4] Explanation: These arrays als…

原文链接: https://leetcode-cn.com/problems/all-elements-in-two-binary-search-trees 英文原文Given two binary search trees root1 and root2. Return a list containing all the integers from both trees sorted in ascending order. Example 1: Input: root1 = [2,1,4], …

原文链接: https://leetcode-cn.com/problems/jump-game-iii 英文原文Given an array of non-negative integers arr, you are initially positioned at start index of the array. When you are at index i, you can jump to i + arr[i] or i - arr[i], check if you can reach …

原文链接: https://leetcode-cn.com/problems/verbal-arithmetic-puzzle 英文原文Given an equation, represented by words on left side and the result on right side. You need to check if the equation is solvable under the following rules: Each character is decoded …

原文链接: https://leetcode-cn.com/problems/decrypt-string-from-alphabet-to-integer-mapping 英文原文Given a string s formed by digits ('0' - '9') and '#' . We want to map s to English lowercase characters as follows: Characters ('a' to 'i') are represented by…

原文链接: https://leetcode-cn.com/problems/xor-queries-of-a-subarray 英文原文You are given an array arr of positive integers. You are also given the array queries where queries[i] = [lefti, righti]. For each query i compute the XOR of elements from lefti to …

原文链接: https://leetcode-cn.com/problems/get-watched-videos-by-your-friends 英文原文There are n people, each person has a unique id between 0 and n-1. Given the arrays watchedVideos and friends, where watchedVideos[i] and friends[i] contain the list of wat…

原文链接: https://leetcode-cn.com/problems/minimum-insertion-steps-to-make-a-string-palindrome 英文原文Given a string s. In one step you can insert any character at any index of the string. Return the minimum number of steps to make s palindrome. A Palindrom…

原文链接: https://leetcode-cn.com/problems/convert-integer-to-the-sum-of-two-no-zero-integers 英文原文Given an integer n. No-Zero integer is a positive integer which doesn't contain any 0 in its decimal representation. Return a list of two integers [A, B] wh…

原文链接: https://leetcode-cn.com/problems/minimum-flips-to-make-a-or-b-equal-to-c 英文原文Given 3 positives numbers a, b and c. Return the minimum flips required in some bits of a and b to make ( a OR b == c ). (bitwise OR operation). Flip operation consist…

原文链接: https://leetcode-cn.com/problems/number-of-operations-to-make-network-connected 英文原文There are n computers numbered from 0 to n-1 connected by ethernet cables connections forming a network where connections[i] = [a, b] represents a connection be…

原文链接: https://leetcode-cn.com/problems/minimum-distance-to-type-a-word-using-two-fingers 英文原文 You have a keyboard layout as shown above in the X-Y plane, where each English uppercase letter is located at some coordinate. For example, the letter 'A' i…

原文链接: https://leetcode-cn.com/problems/number-of-steps-to-reduce-a-number-to-zero 英文原文Given an integer num, return the number of steps to reduce it to zero. In one step, if the current number is even, you have to divide it by 2, otherwise, you have t…

原文链接: https://leetcode-cn.com/problems/number-of-sub-arrays-of-size-k-and-average-greater-than-or-equal-to-threshold 英文原文Given an array of integers arr and two integers k and threshold. Return the number of sub-arrays of size k and average greater th…

原文链接: https://leetcode-cn.com/problems/jump-game-iv 英文原文Given an array of integers arr, you are initially positioned at the first index of the array. In one step you can jump from index i to index: i + 1 where: i + 1 < arr.length. i - 1 where: i - 1 …

原文链接: https://leetcode-cn.com/problems/angle-between-hands-of-a-clock 英文原文Given two numbers, hour and minutes. Return the smaller angle (in degrees) formed between the hour and the minute hand. Example 1: Input: hour = 12, minutes = 30 Output: 165 Ex…

原文链接: https://leetcode-cn.com/problems/maximum-69-number 英文原文Given a positive integer num consisting only of digits 6 and 9. Return the maximum number you can get by changing at most one digit (6 becomes 9, and 9 becomes 6). Example 1: Input: num = 9…

原文链接: https://leetcode-cn.com/problems/print-words-vertically 英文原文Given a string s. Return all the words vertically in the same order in which they appear in s. Words are returned as a list of strings, complete with spaces when is necessary. (Trailin…

原文链接: https://leetcode-cn.com/problems/minimum-number-of-taps-to-open-to-water-a-garden 英文原文There is a one-dimensional garden on the x-axis. The garden starts at the point 0 and ends at the point n. (i.e The length of the garden is n). There are n + …