41 lines
817 B
C#
41 lines
817 B
C#
using System;
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namespace algo08_stack
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{
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public class ArrayStack<T>
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{
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private readonly int _capacity;
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private readonly T[] _data;
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private int _top = -1; // 指向栈顶元素，当为-1时表示栈为空
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public ArrayStack(int capacity)
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{
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_capacity = capacity;
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_data = new T[capacity];
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}
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public int Count => _top + 1;
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public void Push(T val)
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{
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if (Count == _capacity) throw new InvalidOperationException("Stack full.");
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_top++;
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_data[_top] = val;
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}
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public T Pop()
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{
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if (_top == -1) throw new InvalidOperationException("Stack empty.");
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T val = _data[_top];
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_top--;
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return val;
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}
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}
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} |