题目内容
The “stack empty” condition implies that you cannot add an element.
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The stacklist, the maximum number of elements in the stack and the index (top) are public members, and the operations are private.
Items enter the array（Push） in decreasing order of the indices and come off the stack (Pop) in increasing order of the indices.
An algorithm usually includes input, processing steps and output.
1.根据我国现行的关于工程预付款的规定，下列说法中正确的是（ ）。
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