zmachine

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： Given a list of airline tickets represented by pairs of departure and arrival airports [from, to], reconstruct the itinerary in order. All of the tick 阅读全文

摘要： Given an array of linked-lists lists, each linked list is sorted in ascending order. Merge all the linked-lists into one sort linked-list and return i 阅读全文

摘要： Given an array nums of n integers, are there elements a, b, c in nums such that a + b + c = 0? Find all unique triplets in the array which gives the s 阅读全文

摘要： Given an array of integers, return indices of the two numbers such that they add up to a specific target. You may assume that each input would have ex 阅读全文

摘要： Given an integer array, your task is to find all the different possible increasing subsequences of the given array, and the length of an increasing su 阅读全文

摘要： Given a range [m, n] where 0 <= m <= n <= 2147483647, return the bitwise AND of all numbers in this range, inclusive. Example 1: Input: [5,7]Output: 4 阅读全文

摘要： Given two sorted arrays nums1 and nums2 of size m and n respectively. Return the median of the two sorted arrays. Follow up: The overall run time comp 阅读全文

摘要： You have 4 cards each containing a number from 1 to 9. You need to judge whether they could operated through *, /, +, -, (, ) to get the value of 24. 阅读全文

摘要： 给你两个有序整数数组 nums1 和 nums2，请你将 nums2 合并到 nums1 中，使 nums1 成为一个有序数组。 说明: 初始化 nums1 和 nums2 的元素数量分别为 m 和 n 。你可以假设 nums1 有足够的空间（空间大小大于或等于 m + n）来保存 nums2 中的 阅读全文