随笔分类 - LeetCode
摘要：We define a harmonious array is an array where the difference between its maximum value and its minimum value is exactly 1. Now, given an integer arra
阅读全文
摘要：Merge two sorted linked lists and return it as a new list. The new list should be made by splicing together the nodes of the first two lists. Example:
阅读全文
摘要：Given an array nums and a value val, remove all instances of that value in place and return the new length. Do not allocate extra space for another ar
阅读全文
摘要：Given a string s and a string t, check if s is subsequence of t. You may assume that there is only lower case English letters in both s and t. t is po
阅读全文
摘要：In LeetCode Store, there are some kinds of items to sell. Each item has a price. However, there are some special offers, and a special offer consists
阅读全文
摘要：Initially on a notepad only one character 'A' is present. You can perform two operations on this notepad for each step: Copy All : You can copy all th
阅读全文
摘要：Given an array of scores that are non negative integers. Player 1 picks one of the numbers from either end of the array followed by the player 2 and t
阅读全文
摘要：Given a positive integer n, break it into the sum of at least two positive integers and maximize the product of those integers. Return the maximum pro
阅读全文
摘要：Given a non negative integer n, count all numbers with unique digits, x, where 0 ≤ x Given n = 2, return 91. (The answer should be the total numbers i
阅读全文
摘要：You are given n pairs of numbers. In every pair, the first number is always smaller than the second number. Now, we define a pair (c, d) can follow an
阅读全文
摘要：Given two strings s1, s2, find the lowest ASCII sum of deleted characters to make two strings equal. Example 1: Input: s1 = "sea", s2 = "eat" Output:
阅读全文
摘要：A sequence of number is called arithmetic if it consists of at least three elements and if the difference between any two consecutive elements is the
阅读全文
摘要：Given a string, your task is to count how many palindromic substrings in this string. The substrings with different start indexes or end indexes are c
阅读全文
摘要：Given a non negative integer number num. For every numbers i in the range 0 ≤ i ≤ num calculate the number of 1's in their binary representation and r
阅读全文
摘要：You are a professional robber planning to rob houses along a street. Each house has a certain amount of money stashed, the only constraint stopping yo
阅读全文
摘要：Given an integer array nums, find the sum of the elements between indices i and j (i ≤ j), inclusive. Example: Note: 1: You may assume that the array
阅读全文
摘要：On a staircase, the i th step has some non negative cost cost[i] assigned (0 indexed). Once you pay the cost, you can either climb one or two steps. Y
阅读全文
摘要：Say you have an array for which the ith element is the price of a given stock on day i. If you were only permitted to complete at most one transaction
阅读全文
摘要：You are climbing a stair case. It takes n steps to reach to the top. Each time you can either climb 1 or 2 steps. In how many distinct ways can you cl
阅读全文
摘要：Find the contiguous subarray within an array (containing at least one number) which has the largest sum. For example, given the array [ 2,1, 3,4, 1,2,
阅读全文
浙公网安备 33010602011771号