mooe1011的博客

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 exactly one solution, and you may not use the same ...

You are given two non-empty linked lists representing two non-negative integers. The digits are stored in reverse order and each of their nodes contain a single digit. Add the two numbers and return i...

A sequence of numbers is called awiggle sequenceif the differences between successive numbers strictly alternate between positive and negative. The first difference (if one exists) may be either pos...

Given a string, find the length of thelongest substringwithout repeating characters. Example 1: Input: "abcabcbb" Output: 3 Explanation: The answer is "abc", with the length of 3. Example 2: ...

There are two sorted arraysnums1andnums2of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity should be O(log (m+n)). You may assumenums1andn...

Givennnon-negative integersa1,a2, ...,an, where each represents a point at coordinate (i,ai).nvertical lines are drawn such that the two endpoints of lineiis at (i,ai) and (i, 0). Find two...

Given a 32-bit signed integer, reverse digits of an integer. Example 1: Input: 123 Output: 321 Example 2: Input: -123 Output: -321 Example 3: Input: 120 Output: 21 Note: Assume we are dea...

Given an arraynumsofnintegers, are there elementsa,b,cinnumssuch thata+b+c= 0? Find all unique triplets in the array which gives the sum of zero. Note: The solution set must not conta...

Given an integer arraynums, find the contiguous subarray(containing at least one number) which has the largest sum and return its sum. Example: Input: [-2,1,-3,4,-1,2,1,-5,4], Output: 6 Explanati...

Given a sorted arraynums, remove the duplicatesin-placesuch that each element appear onlyonceand return the new length. Do not allocate extra space for another array, you must do this bymodifyi...

There are2Npeople a company is planning to interview. The cost of flying thei-th person to cityAiscosts[i][0], and the cost of flying thei-th person to cityBiscosts[i][1]. Return the ...

Given a collection of intervals, merge all overlapping intervals. Example 1: Input: [[1,3],[2,6],[8,10],[15,18]] Output: [[1,6],[8,10],[15,18]] Explanation: Since intervals [1,3] and [2,6] overlaps...

You are playing the followingBulls and Cowsgame with your friend: You write down a number and ask your friend to guess what the number is. Each time your friend makes a guess, you provide a hint tha...

Your friend is typing hisnameinto a keyboard. Sometimes, when typing a characterc, the key might getlong pressed, and the character will be typed 1 or more times. You examine thetypedcharacter...