C++中的map是一种关联容器，用于存储键值对。它提供了一种非常高效的方法来快速查找特定的值，并且允许我们根据键来排序和遍历数据。

这样的好处是便于识别是否有拼写错误，对于 Emacs 来说就是 M-u(upcase-word) ，但是有一点麻烦的地方在于：在转化前，需要先 M-b 向后移动...

同一数组中每个元素的数据类型（int long short double float char...）必须相同。

Given a pattern and a string str, find if str follows the same pattern.

Write a bash script to calculate the frequency of each word in a text file words...

Write a SQL query to find all duplicate emails in a table named Person.

Implement a trie with insert, search, and startsWith methods.

Design a data structure that supports the following two operations:

Given a pattern and a string str, find if str follows the same pattern.

Peter likes to travel by train. He likes it so much that on the train he falls a...

Implement a trie with insert, search, and startsWith methods.

211. Add and Search Word - Data structure design Design a data structure that s...

思路2： 先把T的每个字符和对应个数存入bucket数组，根据S的顺序扫一遍，最后再扫一遍剩余字符（非S中的字符）。

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Given a string which consists of lowercase or uppercase letters, find the length...

Implement a trie with insert, search, and startsWith methods. Note: You may ...

LWC 53：691. Stickers to Spell Word 传送门：691. Stickers to Spell Word Problem: We ...