从 ArrayList (Java) 添加到堆栈
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时间：2020-10-31 20:24:36 来源:igfitidea点击:
Add to stack from ArrayList (Java)
提问by A C
I have an ArrayList pre-defined with hardcoded values. How do I add these to a stack? The idea is to demonstrate the pop, push, peek functions of the stack class.
我有一个用硬编码值预定义的 ArrayList。如何将这些添加到堆栈中？这个想法是为了演示stack类的pop、push、peek函数。
ArrayList<String> al = new ArrayList<String>();
al.add("A");
al.add("B");
al.add("C");
Stack<String> st = new Stack<String>();
st.push(al); **// This doesn't seem to work.. Will I have to loop it in some way?**
System.out.println(st);
Thanks!
谢谢！
回答by Denys Séguret
回答by noMAD
Why not just iterate over array list and push it to stack?
为什么不只是遍历数组列表并将其推送到堆栈？
for(String str : al)
st.push(str)
