设输入序列为ABC,输出为ABC,则经过的栈操作为
A.push,pop,push,push,pop,pop B.push,push,pop,pop,push,pop C.push,pash,push,pop,pop,pop D.push,pop,push,pop,push,pop正确答案D
设输入序列为ABC,输出为ABC,则经过的栈操作为
A.push,pop,push,push,pop,pop B.push,push,pop,pop,push,pop C.push,pash,push,pop,pop,pop D.push,pop,push,pop,push,pop正确答案D
