'commit'

TangDou/CSP-J/J2-2021/4_Queue.cpp

@@ -0,0 +1,41 @@
+#include <bits/stdc++.h>
+using namespace std;
+const int N = 200010;
+
+struct Node {
+    int id, v;
+};
+
+int n;
+queue<Node> q, p;
+
+int main() {
+    scanf("%d", &n);
+    for (int i = 1; i <= n; i++) {
+        int x;
+        scanf("%d", &x);
+        q.push({i, x});
+    }
+
+    int cnt = 0;
+    while (cnt < n) {
+        int last = 2; //每一轮，首位都需要输出，所以这里的 flag需要每次初始化为2,黄海最初将它放在while的外面，调试了近半个小时~
+        while (q.size()) {
+            auto a = q.front();
+            q.pop();
+            if (a.v != last) {
+                printf("%d ", a.id);
+                last = a.v;
+                cnt++;
+            } else
+                p.push(a);
+        }
+        puts("");
+        while (p.size()) {
+            auto a = p.front();
+            q.push(a);
+            p.pop();
+        }
+    }
+    return 0;
+}