Golang | Leetcode Golang题解之第504题七进制数
题目：
题解：
func convertToBase7(num int) string {
if num == 0 {
return "0"
}
negative := num < 0
if negative {
num = -num
}
s := []byte{}
for num > 0 {
s = append(s, '0'+byte(num%7))
num /= 7
}
if negative {
s = append(s, '-')
}
for i, n := 0, len(s); i < n/2; i++ {
s[i], s[n-1-i] = s[n-1-i], s[i]
}
return string(s)
}