原创 Leetcode：27.Remove Element
題目：Given an array and a value, remove all instances of that value in-place and return the new length. Do not alloca
2020-06-26 12:33:59
原创 Leetcode:442. Find All Duplicates in an Array 找數組中的重複數字
Given an array of integers, 1 ≤ a[i] ≤ n (n = size of array), some elements appear twice and others appear once. Fi
2020-06-26 12:33:59
2
原创 Leetcode：713.Subarray Product Less Than K
題目描述： 題目： Your are given an array of positive integers nums. Count and print the number of (contiguous) subarrays
2020-06-26 12:33:59
2
原创 Leetcode：121. Best Time to Buy and Sell Stock
題目： Say you have an array for which the ith element is the price of a given stock on day i. If you were only permi
2020-06-26 12:33:48
原创 Leetcode：204. Count Primes 求素數的優化問題
Description: Count the number of prime numbers less than a non-negative number, n. Credits: Special thanks to @mit
2020-06-26 12:33:48
原创 Leetcode：202. Happy Number
Write an algorithm to determine if a number is “happy”. A happy number is a number defined by the following process
2020-06-26 12:33:48
原创 Leetcode：112. Path Sum （求Tree中是否存在路徑的和等於給定值）
Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values alo
2020-02-21 12:43:52
原创 Leetcode：485. Max Consecutive Ones 找二進制串連續1最多是多少
Given a binary array, find the maximum number of consecutive 1s in this array. Example 1: Input: [1,1,0,1,1,1] Out
2020-02-21 12:43:52
原创 Leetcode：167. Two Sum II - Input array is sorted 求數組中的兩個數的和等於給定值，求這兩個數的下標
Given an array of integers that is already sorted in ascending order, find two numbers such that they add up to a s
2020-02-21 12:43:52
原创 Leetcode：349. Intersection of Two Arrays
Given two arrays, write a function to compute their intersection. Example: Given nums1 = [1, 2, 2, 1], nums2 = [2,
2020-02-21 12:43:52
原创 Leetcode：36.Valid Sudoku 初始化數獨數組是否合法判斷
Determine if a Sudoku is valid, according to: Sudoku Puzzles - The Rules. The Sudoku board could be partially fille
2020-02-21 12:43:52
原创 Leetcode：513. Find Bottom Left Tree Value
Given a binary tree, find the leftmost value in the last row of the tree. Example 1: Input: 2 / \ 1 3 Output
2020-02-21 12:43:52
原创 Leetcode：350. Intersection of Two Arrays II 求兩個數組的交集
Given two arrays, write a function to compute their intersection. Example: Given nums1 = [1, 2, 2, 1], nums2 = [2,
2020-02-21 12:43:52
原创 Leetcode：475. Heaters （利用二分binary search）
題目： Winter is coming! Your first job during the contest is to design a standard heater with fixed warm radius to w
2020-02-21 12:43:52
原创 Leetcode：283. Move Zeroes 把數組中爲0的元素移到最後
描述：Given an array nums, write a function to move all 0’s to the end of it while maintaining the relative order of t
2020-02-21 12:43:52