🐞 fix: 队列为空时不应该操作指向

2024-05-14 11:50:12 +08:00 · 2024-05-14 11:50:12 +08:00 · 920556ace4
commit 920556ace4
parent 063a41fa7f
1 changed files with 4 additions and 0 deletions
--- a/codes/go/chapter_stack_and_queue/array_queue.go
+++ b/codes/go/chapter_stack_and_queue/array_queue.go
@ -49,6 +49,10 @@ func (q *arrayQueue) push(num int) {
 /* 出队 */
 func (q *arrayQueue) pop() any {
 	num := q.peek()
+	if num == nil {
+		return nil
+	}
+
 	// 队首指针向后移动一位，若越过尾部，则返回到数组头部
 	q.front = (q.front + 1) % q.queCapacity
 	q.queSize--