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Program.cs
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Program.cs
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using System;
using System.Collections.Generic;
namespace PeekingIterator
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("Hello World!");
}
}
class PeekingIterator
{
private IEnumerator<int> _iterator;
private bool _hasNext;
public PeekingIterator(IEnumerator<int> iterator)
{
_iterator = iterator;
_hasNext = true;
}
public int Peek()
{
return _iterator.Current;
}
public int Next()
{
var res = _iterator.Current;
_hasNext = _iterator.MoveNext();
return res;
}
public bool HasNext()
{
return _hasNext;
}
}
}