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TangDou/LuoGuBook/P1498.cpp

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+#include <bits/stdc++.h>
+
+using namespace std;
+//https://www.luogu.com.cn/blog/froggy/solution-p1498
+const int N = 3010;//开大点
+char a[N][N];
+int n;
+int h = 2, w = 4;//h是高,w是宽
+void init() {
+    memset(a, ' ', sizeof(a));
+    a[1][2] = a[2][1] = '/';
+    a[1][3] = a[2][4] = '\\';
+    a[2][2] = a[2][3] = '_';
+}
+
+int main() {
+    //初始化
+    init();
+    //读入
+    cin >> n;
+    //迭代n-1次，因为第一个三角形已经写死了~
+    for (int i = 1; i < n; i++) {
+        //向下和向右
+        for (int j = 1; j <= h; j++) {
+            for (int k = 1; k <= w; k++) {
+                a[j + h][k] = a[j + h][k + w] = a[j][k];
+                a[j][k] = ' ';//把上面的清掉
+            }
+        }
+        //向上
+        for (int j = 1; j <= h; j++)
+            for (int k = 1; k <= w; k++)
+                a[j][k + w / 2] = a[j + h][k];
+
+        //双倍扩展
+        w *= 2, h *= 2;
+        //刷新完成一次
+    }
+
+    //输出大吉
+    for (int i = 1; i <= h; i++) { //高度就是行
+        for (int j = 1; j <= w; j++) //宽度就是列
+            cout << a[i][j];
+        cout << endl;
+    }
+    return 0;
+}