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https://www.acmicpc.net/problem/6514BOJ - Expressions문제 유형: 스택, 큐, 트리문제 난이도: Silver I시간 제한: 1초메모리 제한: 128MB 문제Arithmetic expressions are usually written with the operators in between the two operands (which is called infix notation). For example, (x+y)*(z-w) is an arithmetic expression in infix notation. However, it is easier to write a program to evaluate an expression if the expression is writ..

https://leetcode.com/problems/permutation-in-string/description/?envType=daily-question&envId=2024-10-05leetcode - Permutation in String문제 유형 : 슬라이딩 윈도우, 해시문제 난이도 : Medium 문제Given two strings s1 and s2, return true if s2 contains a permutation of s1, or false otherwise.In other words, return true if one of s1's permutations is the substring of s2. 두 문자열 s1과 s2가 주어진다.만약 s2가 s1의 순열을 포함한다면 true를, 아..