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32 lines
577 B
Go
32 lines
577 B
Go
11 months ago
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package gtp
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import (
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"fmt"
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"git.noahlan.cn/noahlan/ntool/nmath"
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"strings"
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)
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const alpha = "abcdefghjklmnopqrstuvwxyzABCDEFGHJKLMNOPQRSTUVWXYZ" // 无 'I' 的alpha
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func Point(x, y int) string {
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if x < 0 || x >= 50 || y < 0 || y >= 50 {
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return ""
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}
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return fmt.Sprintf("%s%d", byteToString(alpha[x]), y+1)
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}
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func byteToString(b byte) string {
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return string([]byte{b})
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}
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func ParsePoint(pos string) (x, y int) {
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x = byteToIndex(pos[0])
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y, _ = nmath.Int(pos[1:])
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y = y - 1
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return
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}
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func byteToIndex(b byte) int {
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return strings.Index(alpha, string([]byte{b}))
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}
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