P5734 【深基6.例6】文字处理软件

R35887921

problem/P5734/P5734.cpp

@@ -0,0 +1,47 @@
+// https://www.luogu.com.cn/record/35887921
+
+#include<bits/stdc++.h>
+
+using namespace std;
+
+int main() {
+    int n = 0;
+    cin >> n;
+    string s = "";
+    cin >> s;
+    for(int i = 0 ; i < n ; i++) {
+        int act;
+        cin >> act;
+        if (act == 1) {
+            string s1;
+            cin >> s1;
+            s += s1;
+            cout << s;
+        } 
+        else if (act == 2) {
+            int st, ed;
+            cin >> st >> ed;
+            s = s.substr(st, ed);
+            cout << s;
+        } 
+        else if (act == 3) {
+            int st;
+            string s1;
+            cin >> st >> s1;
+            s.insert(st, s1);
+            cout << s;
+        } 
+        else if (act == 4) {
+            string s1;
+            cin >> s1;
+            if(s.find(s1) < s.size()) {
+                cout << s.find(s1);
+            }
+            else {
+                cout << "-1";
+            }
+        }
+        cout << endl;
+    }
+    return 0;
+}