20251016 baekjoon

code_study/Baekjoon/ts/2206.ts

@@ -0,0 +1,81 @@
+export {};
+
+type tuple = [number, number, number, boolean];
+
+class Deque <T> {
+    private enqueue: T[];
+    private dequeue: T[];
+
+    constructor() {
+        this.enqueue = [];
+        this.dequeue = [];
+    }
+
+    public isEmpty(): boolean {
+        return (this.enqueue.length === 0 && this.dequeue.length === 0);
+    }
+
+    public push(data: T) {
+        this.enqueue.push(data);
+    }
+
+    public popLeft(): T | undefined {
+        if(this.isEmpty()) {
+            return undefined;
+        }
+
+        if(this.dequeue.length === 0) {
+            this.enqueue.reverse();
+            this.dequeue = this.enqueue;
+            this.enqueue = [];
+        }
+
+        let value: T = this.dequeue.pop();
+        return value;
+    }
+
+    // 필요시 일반적인 pop과 왼쪽 삽입 매서드도 구현해서 사용하면 됩니다.
+}
+
+const input = require("fs").readFileSync(0).toString().trim().split('\n');
+const [N, M] = input[0].split(' ').map(Number);
+
+let mapData: number[][] = [];
+for(let i=1; i<=N; i++) mapData.push(input[i].split('').map(Number));
+
+let visited: boolean[][][] = Array.from({length: N}, () => Array.from({length: M}, () => [false, false]));
+visited[0][0] = [true, true];
+let dq = new Deque<tuple>();
+dq.push([0,0,1,false]);
+let result: number = -1;
+const dx = [1,-1,0,0];
+const dy = [0,0,1,-1];
+
+while(!dq.isEmpty()) {
+    const [cx, cy, cd, breakBlock]: tuple = dq.popLeft();
+
+    if(cx === M-1 && cy === N-1) {
+        result = cd;
+        break;
+    }
+
+    for(let i=0; i<4; i++) {
+        const [nx, ny]: number[] = [cx + dx[i], cy + dy[i]];
+
+        if(ny < 0 || ny >= N || nx < 0 || nx >= M) continue;
+
+        const isWall = mapData[ny][nx] === 1;
+
+        if(isWall && breakBlock) continue;
+
+        const nextBreakBlock: boolean = breakBlock || isWall;
+        const blockState: number = nextBreakBlock ? 1 : 0;
+
+        if(!visited[ny][nx][blockState]) {
+            dq.push([nx, ny, cd+1, nextBreakBlock]);
+            visited[ny][nx][blockState] = true;
+        }
+    }
+}
+
+console.log(result);