excel_sheet_column_title

Author: hitzzc

README.md

@@ -145,7 +145,7 @@ Golang solution for leetcode. For each problem, there is a simple *_test.go to t
 #### [165. compare version numbers](https://github.com/hitzzc/go-leetcode/tree/master/compare_version_numbers)
 #### [166. Fraction to Recurring Decimal](https://github.com/hitzzc/go-leetcode/tree/master/fraction_to_recurring_decimal)
 #### [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)
 
 
 

excel_sheet_column_title/excel_sheet_column_title.go

@@ -0,0 +1,18 @@
+package excel_sheet_column_title
+
+func convertToTitle(n int) string {
+	if n == 0 {
+		return ""
+	}
+	bytes := []byte{}
+	var remainder int
+	for n > 0 {
+		remainder = (n - 1) % 26
+		bytes = append(bytes, 'A'+byte(remainder))
+		n = (n - 1) / 26
+	}
+	for i, j := 0, len(bytes)-1; i < j; i, j = i+1, j-1 {
+		bytes[i], bytes[j] = bytes[j], bytes[i]
+	}
+	return string(bytes)
+}