41 lines
652 B
Go
41 lines
652 B
Go
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package server
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func (server *Server) validateRow(row string) (valid bool) {
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// Declarations baby!
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valid = true
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var found bool
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var double bool
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count := make(map[rune]int)
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// 1. Make sure row is 9 in length
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if len(row) != 9 {
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valid = false
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}
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// 2. Ensure all digits are numbers
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for _, value := range row {
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found = server.validChar(value)
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}
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if !found {
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valid = false
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}
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// 3. Ensure all digits (except zero) are only present once
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for _, digits := range row {
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count[digits] = count[digits] + 1
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}
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for key, value := range count {
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if value > 1 && key != 48 {
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double = true
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}
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}
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if double {
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valid = false
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}
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return
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}
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