Sha256: d842a702420a2ce8259c9060bbbd1a8da3cff571e8df56743ba2e459b9bba242
Contents?: true
Size: 957 Bytes
Versions: 122
Compression:
Stored size: 957 Bytes
Contents
package diamond
import (
"errors"
"strings"
)
const startIndex = 'A'
// Gen builds a diamond
func Gen(char byte) (string, error) {
if char > 'Z' || char < 'A' {
return "", errors.New(string(char) + " isn't supported, only between (A, Z)")
}
return gen(char), nil
}
func gen(char byte) string {
var output []string
currentIndex := int(char - startIndex)
for i := 0; i <= currentIndex; i++ {
output = append(output, getLine(currentIndex, i))
}
for i := currentIndex - 1; i > -1; i-- {
output = append(output, getLine(currentIndex, i))
}
return strings.Join(output, "\n") + "\n"
}
func getLine(currentStart, current int) string {
diff := currentStart - current
return spaces(diff) + alphabets(current) + spaces(diff)
}
func alphabets(current int) string {
if current == 0 {
return "A"
}
c := current + startIndex
return string(c) + spaces(current*2-1) + string(c)
}
func spaces(n int) string {
return strings.Repeat(" ", n)
}
Version data entries
122 entries across 122 versions & 1 rubygems