74 lines
1.2 KiB
Go
74 lines
1.2 KiB
Go
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package words
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import (
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"bufio"
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"strings"
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)
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type List struct {
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words [][]string
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len int
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}
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func newList(words []string) List {
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return List{
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words: [][]string{words},
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len: len(words),
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}
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}
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func NewList(words []string) List {
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cleaned := make([]string, 0, len(words))
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for _, w := range words {
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w = strings.TrimSpace(w)
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w = strings.ToUpper(w)
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if w != "" {
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cleaned = append(cleaned, w)
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}
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}
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return newList(cleaned)
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}
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func NewListFromLines(s string) List {
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words := make([]string, 0, strings.Count(s, "\n"))
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scanner := bufio.NewScanner(strings.NewReader(s))
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for scanner.Scan() {
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word := scanner.Text()
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word = strings.TrimSpace(word)
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word = strings.ToUpper(word)
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if word != "" {
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words = append(words, word)
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}
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}
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return newList(words)
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}
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func (l *List) Len() int {
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return l.len
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}
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func (l *List) Get(i int) string {
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for _, words := range l.words {
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if i < len(words) {
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return words[i]
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}
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i -= len(words)
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}
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panic("out of bounds")
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}
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func (l List) Concat(other List) List {
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words := make([][]string, 0, len(l.words)+len(other.words))
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words = append(words, l.words...)
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words = append(words, other.words...)
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return List{
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words: words,
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len: l.len + other.len,
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}
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}
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