He was found guilty and was ____ in the Tower of London, where he died very quickly, aged only 47.
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In spite of all your _____, there may be times when you encounter difficulties in the training process.
People there are told it is their ____ duty to support the national economy by buying the nation’s own goods.
【单选题】若元素a、b、c、d、e、f依次进栈,允许进栈、出栈操作交替进行,但不允许连续3次出栈,则不可能得到的出栈序列是。
A. decbfa
B. cbdaef
C. bcaefd
D. afedcb
【单选题】若一个栈用数组data[1…n]存储,初始栈顶指针top为n+1,则以下元素x进栈的正确的操作是 C 。
A. top++; data[top]=x
B. data[top]=x; top++
C. top--; data[top]=x
D. data[top]=x; top--