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Title Description Source: LeetCode Give you a string licensePlate and a string array words. Please find and return the shortest complement word in words. A complement is a word that contains all the letters in the licensePlate. Of all the complements, the shortest one is the shortest one. When matching letters in the licensePlate: Ignore n ...

Greedy Algorithm Greedy algorithms or ideas use greedy strategies to ensure that each operation is locally optimal, so that the final result is globally optimal. 455 Distribute biscuits Title Description (Simple) Suppose you're a great parent and you want to give your children some cookies. However, each child can only give one cookie at mo ...

[ Give you an integer matrix grid of size m x n, representing a grid. I'll give you three more integers   row, col, and color. Each value in the grid represents the color of the grid block at that location. Two grid blocks belong to the same connected component, and all the following conditions shall be met: The two grid blocks are the ...

leetcode of algorithm interview in Dachang 22. Dictionary tree Video Explanation (efficient learning): Click to learn catalog: 1. Introduction 2. Time and space complexity 3. Dynamic planning 4. Greed 5. Binary search 6. Depth first & breadth first 7. Double pointer 8. Sliding window 9. Bit operation 10. Recursion & divide and conquer 1 ...

1. Title Give you a head node of the linked list to judge whether there are links in the linked list. If there is a node in the linked list that can be reached again by continuously tracking the next pointer, there is a ring in the linked list. In order to represent the rings in a given linked list, the evaluation system uses the inte ...

leetcode essence of algorithm interview in Dachang 21. Tree Video Explanation (efficient learning): Click to learn catalog: 1. Introduction 2. Time and space complexity 3. Dynamic planning 4. Greed 5. Binary search 6. Depth first & breadth first 7. Double pointer 8. Sliding window 9. Bit operation 10. Recursion & divide and ...

Title Description: Given an array of size n, find most of its elements. Most elements refer to elements that appear more than ⌊ n/2 ⌋ in the array. You can assume that the array is non empty and that there are always many elements in a given array. Example 1: Input: [3,2,3] Output: 3 2: Input: [2,2,1,1,1,2,2] Output: 2 Idea: Viol ...

  Title: Give two ordered integer arrays nums1 and nums2, and two integers m and n, representing the number of elements in nums1 and nums2 respectively Please merge nums2 into nums1 so that the merged array is also arranged in order Note: the merged array should not be returned by the function, but stored in the array nums1. It is assum ...

There is an alien language that uses English letters. The alphabetical order of this language is different from that of English. Given a string list words, as the dictionary of the language, the strings in words have been sorted alphabetically in the new language. Please restore the known alphabetical order in this language according to the d ...

Spring is a Java development framework. Its core content includes spring IOC, spring AOP and other components. It supports object inversion of control and automatic dependency injection Learning Spring is something every Java developer has to do. It's just the saying that reading thousands of books is better than walking thousands of miles. ...