impl excel sheet column number

SKTT1Ryze · Mar 11, 2024 · 0c40fef · 0c40fef
1 parent 91b6fcd
commit 0c40fef
Showing 1 changed file with 13 additions and 1 deletion.
diff --git a/leetcode-cc/ExcelSheetColNum.hpp b/leetcode-cc/ExcelSheetColNum.hpp
@@ -26,5 +26,17 @@ class SExcelSheetColNum : public ISolution {
   int benchmark() const override { return 0; }
 
  private:
-  int titleToNumber(string columnTitle) const {}
+  int titleToNumber(string columnTitle) const {
+    int n = columnTitle.size();
+    int k = 0;
+    int res = 0;
+
+    for (int i = n - 1; i >= 0; i--) {
+      int num = columnTitle[i] - 'A' + 1;
+      res += num * pow(26, k);
+      k++;
+    }
+
+    return res;
+  }
 };