init

24/01/670.h

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+//
+// Created by 李洋 on 2024/1/22.
+//
+
+#ifndef LEECODE_C_670_H
+#define LEECODE_C_670_H
+
+#include <string>
+
+using namespace std;
+
+int maximumSwap(int num) {
+    string charArray = to_string(num);
+    int n = charArray.size();
+    int maxIdx = n - 1;
+    int idx1 = -1, idx2 = -1;
+    for (int i = n - 1; i >= 0; i--) {
+        if (charArray[i] > charArray[maxIdx]) {
+            maxIdx = i;
+        } else if (charArray[i] < charArray[maxIdx]) {
+            idx1 = i;
+            idx2 = maxIdx;
+        }
+    }
+    if (idx1 >= 0) {
+        swap(charArray[idx1], charArray[idx2]);
+        return stoi(charArray);
+    } else {
+        return num;
+    }
+}
+
+#endif //LEECODE_C_670_H