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Merge pull request #114 from lichaofei/master 

change the TitleToNumber function
This commit is contained in:
Ri Xu 2017-09-06 12:17:58 +08:00 committed by GitHub
parent 5354074fc2 1f93fc7bad
commit cf1077dc9f
1 changed files with 8 additions and 3 deletions
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11
lib.go
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@ -70,16 +70,21 @@ func ToAlphaString(value int) string {
}
// TitleToNumber provides function to convert Excel sheet column title to int
// (this function doesn't do value check currently). For example convert AK to
// column title 36:
// (this function doesn't do value check currently). For example convert AK
// and ak to column title 36:
//
// excelize.TitleToNumber("AK")
// excelize.TitleToNumber("ak")
//
func TitleToNumber(s string) int {
weight := 0.0
sum := 0
for i := len(s) - 1; i >= 0; i-- {
sum = sum + (int(s[i])-int('A')+1)*int(math.Pow(26, weight))
ch := int(s[i])
if int(s[i]) >= int('a') && int(s[i]) <= int('z') {
ch = int(s[i]) - 32
}
sum = sum + (ch-int('A')+1)*int(math.Pow(26, weight))
weight++
}
return sum - 1