update book code

This commit is contained in:
Unknwon
2015-03-03 12:25:25 -05:00
parent b8c82ba4e5
commit eab1d98ba8
465 changed files with 15392 additions and 1572 deletions

View File

@@ -0,0 +1,19 @@
package main
var keyChar = []byte("0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
func genKey(n int) string {
if n == 0 {
return string(keyChar[0])
}
l := len(keyChar)
s := make([]byte, 20) // FIXME: will overflow. eventually.
i := len(s)
for n > 0 && i >= 0 {
i--
j := n % l
n = (n - j) / l
s[i] = keyChar[j]
}
return string(s[i:])
}