mirror of https://github.com/01-edu/public.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
121 lines
2.0 KiB
121 lines
2.0 KiB
![]()
4 years ago
|
package solutions
|
||
|
|
||
|
import (
|
||
|
"math/rand"
|
||
|
|
||
|
"github.com/01-edu/z01"
|
||
|
)
|
||
|
|
||
|
func ContainsPlusMinus(s string) bool {
|
||
|
for _, c := range s {
|
||
|
if c == '+' || c == '-' {
|
||
|
return true
|
||
|
}
|
||
|
}
|
||
|
return false
|
||
|
}
|
||
|
|
||
|
func UniqueChar(s string) bool {
|
||
|
r := []rune(s)
|
||
|
n := len(r)
|
||
|
for i := 0; i < n-1; i++ {
|
||
|
if InStr(r[i], s[i+1:n]) {
|
||
|
return false
|
||
|
}
|
||
|
|
||
|
}
|
||
|
return true
|
||
|
}
|
||
|
|
||
|
func InStr(c rune, s string) bool {
|
||
|
for _, r := range s {
|
||
|
if c == r {
|
||
|
return true
|
||
|
}
|
||
|
}
|
||
|
return false
|
||
|
}
|
||
|
|
||
|
func ValidBase(base string) bool {
|
||
|
return len(base) >= 2 && !ContainsPlusMinus(base) && UniqueChar(base)
|
||
|
}
|
||
|
|
||
|
func Power(nbr int, pwr int) int {
|
||
|
if pwr == 0 {
|
||
|
return 1
|
||
|
}
|
||
|
if pwr == 1 {
|
||
|
return nbr
|
||
|
}
|
||
|
return nbr * Power(nbr, pwr-1)
|
||
|
|
||
|
}
|
||
|
|
||
|
func AtoiBase(s string, base string) int {
|
||
|
var result int
|
||
|
var i int
|
||
|
sign := 1
|
||
|
lengthBase := len(base)
|
||
|
lengths := len(s)
|
||
|
|
||
|
if !ValidBase(base) {
|
||
|
return 0
|
||
|
}
|
||
|
if s[i] == '-' {
|
||
|
sign = -1
|
||
|
}
|
||
|
if s[i] == '-' || s[i] == '+' {
|
||
|
i++
|
||
|
}
|
||
|
for i < len(s) {
|
||
|
result = result + (Index(base, string(s[i])) * Power(lengthBase, lengths-1))
|
||
|
i++
|
||
|
lengths--
|
||
|
}
|
||
|
return result * sign
|
||
|
}
|
||
|
|
||
|
// this function is used to create the tests (input VALID bases here)
|
||
|
|
||
|
func RandomValidBase() string {
|
||
|
validBases := []string{
|
||
|
"01",
|
||
|
"CHOUMIisDAcat!",
|
||
|
"choumi",
|
||
|
"0123456789",
|
||
|
"abc", "Zone01",
|
||
|
"0123456789ABCDEF",
|
||
|
"WhoAmI?",
|
||
|
}
|
||
|
index := rand.Intn(len(validBases))
|
||
|
return validBases[index]
|
||
|
}
|
||
|
|
||
|
// this function is used to create the tests (input INVALID bases here)
|
||
|
func RandomInvalidBase() string {
|
||
|
invalidBases := []string{
|
||
|
"0",
|
||
|
"1",
|
||
|
"CHOUMIisdacat!",
|
||
|
"choumiChoumi",
|
||
|
"01234567890",
|
||
|
"abca",
|
||
|
"Zone01Zone01",
|
||
|
"0123456789ABCDEF0",
|
||
|
"WhoAmI?IamWhoIam",
|
||
|
}
|
||
|
index := z01.RandIntBetween(0, len(invalidBases)-1)
|
||
|
return invalidBases[index]
|
||
|
}
|
||
|
|
||
|
// this function is used to create the random STRING number from VALID BASES
|
||
|
func RandomStringFromBase(base string) string {
|
||
|
letters := []rune(base)
|
||
|
size := z01.RandIntBetween(1, 10)
|
||
|
r := make([]rune, size)
|
||
|
for i := range r {
|
||
|
r[i] = letters[rand.Intn(len(letters))]
|
||
|
}
|
||
|
return string(r)
|
||
|
}
|