feat(listx): add range func

pkg/structure/listx/listx.go

@@ -333,3 +333,31 @@ func (l *Listx) Slice(start int, end int) (structure.UpdateLength, error) {
 
 	return structure.UpdateLength(updateLength), nil
 }
+
+func (l *Listx) Range(start, end int) ([]string, error) {
+	startOffset, err := l.rightIndex(start)
+	if err != nil {
+		return nil, err
+	}
+
+	endRightOffset, err := l.rightIndex(end)
+	if err != nil && end != l.length {
+		return nil, errorx.New("index overstep the boundary, index: %d", end)
+	}
+
+	if startOffset >= endRightOffset && endRightOffset != 0 {
+		return nil, errorx.New("the start index must be larger than the end index")
+	}
+
+	head := l.head
+	for nodePoint := 0; head != nil && nodePoint < startOffset; nodePoint++ {
+		head = head.next
+	}
+
+	values := make([]string, 0)
+	for i := 0; i < endRightOffset-startOffset && head != nil; i++ {
+		values = append(values, head.val.ToString())
+		head = head.next
+	}
+	return values, nil
+}