diff --git "a/Seol-JY/202503/11 BOJ G2 \355\233\204\354\234\204 \355\221\234\352\270\260\354\213\235.md" "b/Seol-JY/202503/11 BOJ G2 \355\233\204\354\234\204 \355\221\234\352\270\260\354\213\235.md" new file mode 100644 index 00000000..53b4e2a1 --- /dev/null +++ "b/Seol-JY/202503/11 BOJ G2 \355\233\204\354\234\204 \355\221\234\352\270\260\354\213\235.md" @@ -0,0 +1,54 @@ +```java +import java.io.*; +import java.util.ArrayDeque; + +public class Main { + static ArrayDeque stack = new ArrayDeque<>(); + + public static void main(String[] args) throws IOException { + BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); + StringBuilder sb = new StringBuilder(); + String userInput = br.readLine(); + + for (int i = 0; i < userInput.length(); i++) { + char target = userInput.charAt(i); + + switch(target) { + case '+': + case '-': + case '*': + case '/': + while (!stack.isEmpty() && priority(stack.peek()) >= priority(target)) { + sb.append(stack.pop()); + } + stack.push(target); + break; + case '(': + stack.push(target); + break; + case ')': + while (!stack.isEmpty() && stack.peek() != '(') { + sb.append(stack.pop()); + } + stack.pop(); + break; + default: + sb.append(target); + } + } + + while (!stack.isEmpty()) { + sb.append(stack.pop()); + } + + System.out.println(sb.toString()); + } + + public static int priority(char op) { + if (op == '(' || op ==')') return 0; + if (op == '+' || op == '-') return 1; + if (op == '*' || op == '/') return 2; + return -1; + } +} +```