yanglj的博客

Longest Substring Without Repeating Characters题目描述 Given a string, find the length of the longest substring without repeating characters. Examples: Given “abcabcbb”, the answer is “abc”, which the l

题目描述In MATLAB, there is a very useful function called ‘reshape’, which can reshape a matrix into a new one with different size but keep its original data.You’re given a matrix represented by a two-dime

题目描述Given a binary array, find the maximum number of consecutive 1s in this array. 求最长连续1的个数：给定一个二进制数组，求出最长连续的1的个数 Example 1: Input: [1,1,0,1,1,1] Output: 3 Explanation: The first two digits or th

题目描述/** * Shortest Word Distance—LeetCode243 * Given a list of words and two words word1 and word2, return the shortest distance between these two words in the list. * 给定一个数组和两个单词word1，word2，返回两者

题目描述： Given an array of integers that is already sorted in ascending order, find two numbers such that they add up to a specific target number.The function twoSum should return indices of the two numb

寻找TopN——在10亿数据中找到1000个最大的数目录问题描述解法补充目录问题描述如何从10亿数据中找到前1000大的数？解法针对该问题，给定一个数组data，从中找出前n个最大的数。解题思路先维护一个具有n个数的堆，然后调整该堆为小顶堆，即每个父节点都比其子节点小。然后从剩下的数组中逐一读取数据，将读取到的数据跟堆顶比较。如果该数比堆顶小，直接丢弃；如果该数比堆顶数大，则用该数替...

目录问题描述Implement the following operations of a queue using stacks.push(x) – Push element x to the back of queue.pop() – Removes the element from in front of queue.peek() – Get the front element.e...

问题描述Design and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations: get and put.get(key) - Get the value (will always be positive) of the key i...