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list: add LastIndexOf (#46)

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Add LastIndexOf method too List and fix doc

LastIndexOf returns the index of the last occurrence of the value in this list.
if not found return -1
This commit is contained in:
donutloop
2022-07-21 09:19:18 +02:00
committed by GitHub
parent ac0fb5ef25
commit a82b5dd206
4 changed files with 61 additions and 3 deletions
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16
datastructure/list/list.go
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@@ -31,7 +31,7 @@ func (l *List[T]) ValueOf(index int) (*T, bool) {
return &l.data[index], true
}
// IndexOf reture the index of value. if not found return -1
// IndexOf returns the index of value. if not found return -1
func (l *List[T]) IndexOf(value T) int {
index := -1
data := l.data
@@ -44,6 +44,20 @@ func (l *List[T]) IndexOf(value T) int {
return index
}
// LastIndexOf returns the index of the last occurrence of the value in this list.
// if not found return -1
func (l *List[T]) LastIndexOf(value T) int {
index := -1
data := l.data
for i := len(data) - 1; i >= 0; i-- {
if reflect.DeepEqual(data[i], value) {
index = i
break
}
}
return index
}
// Contain checks if the value in the list or not
func (l *List[T]) Contain(value T) bool {
data := l.data