init

else/topic/2024.h

@@ -0,0 +1,58 @@
+//
+// Created by 李洋 on 2023/12/21.
+//
+
+#ifndef LEECODE_C_2024_H
+#define LEECODE_C_2024_H
+
+#include "stack"
+
+struct Node {
+    int value;
+    struct Node *left;
+    struct Node *right;
+    bool tag1;
+    bool tag2;
+};
+
+using namespace std;
+
+int calculate(stack<Node *> S) {
+    stack<Node *> temp;
+    int num = 0;
+    int i = 0;
+    while (!S.empty()) {
+        num += S.top()->value * pow(10, i++);
+        S.pop();
+    }
+    return num;
+}
+
+int get(Node *root) {
+    if (!root) {
+        return 0;
+    }
+    int count = 0;
+    stack<Node *> S;
+    S.push(root);
+    while (!S.empty()) {
+        if (!S.top()->left && !S.top()->right) {
+            count += calculate(S);
+        }
+        if (S.top()->tag1 == 0 && S.top()->left) {
+            S.top()->tag1 = 1;
+            S.push(S.top()->left);
+            continue;
+        }
+        if (S.top()->tag2 == 0 && S.top()->left) {
+            S.top()->tag2 = 1;
+            S.push(S.top()->right);
+            continue;
+        }
+        S.pop();
+    }
+    return count;
+}
+
+
+#endif //LEECODE_C_2024_H