excel_sheet_column_number

hitzzc · hitzzc · commit f9609aab05a1 · 2016-10-15T21:12:41.000+08:00
diff --git a/README.md b/README.md
@@ -147,6 +147,7 @@ Golang solution for leetcode. For each problem, there is a simple *_test.go to t
 #### [167. Two Sum II](https://github.com/hitzzc/go-leetcode/tree/master/two_sum_II)
 #### [168. Excel Sheet Column Title](https://github.com/hitzzc/go-leetcode/tree/master/excel_sheet_column_title)
 #### [169. Majority Element](https://github.com/hitzzc/go-leetcode/tree/master/majority_element)
+#### [171. Excel Sheet Column Number](https://github.com/hitzzc/go-leetcode/tree/master/excel_sheet_column_number)
 
 
 
diff --git a/excel_sheet_column_number/excel_sheet_column_number.go b/excel_sheet_column_number/excel_sheet_column_number.go
@@ -0,0 +1,10 @@
+package excel_sheet_column_number
+
+func titleToNumber(s string) int {
+	bytes := []byte(s)
+	var ret int
+	for i := range bytes {
+		ret = 26*ret + int(bytes[i]-'A'+1)
+	}
+	return ret
+}
