设栈的输入序列为{1,2,3,4,5,6},则正确的输出序列为:
A.5,3,4,6,1,2
B.3,2,5,6,4,1
C.3,1,2,5,4,6
D.1,5,4,6,2,3
正确答案:3,2,5,6,4,1
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