设一个队列的入队顺序是1,2,3,4,5,那下列哪些是不能存在的出队顺序?
a.1,2,3,5,4b.3,4,5,1,2c.1,2,3,4,5d.5,4,3,2,1e.1,2,5,4,3f.2,3,4,5,1正确答案:1,2,3,5,4;3,4,5,1,2;5,4,3,2,1;1,2,5,4,3;2,3,4,5,1
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设一个队列的入队顺序是1,2,3,4,5,那下列哪些是不能存在的出队顺序?
a.1,2,3,5,4b.3,4,5,1,2c.1,2,3,4,5d.5,4,3,2,1e.1,2,5,4,3f.2,3,4,5,1正确答案:1,2,3,5,4;3,4,5,1,2;5,4,3,2,1;1,2,5,4,3;2,3,4,5,1