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Program.cs
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Program.cs
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using System;
using System.Collections.Generic;
namespace NumberOfGoodWaysToSplitAString
{
class Program
{
static void Main(string[] args)
{
string s = "a";
Console.WriteLine(NumSplits(s));
}
static int NumSplits(string s)
{
var right = new Dictionary<char, int>();
var left = new Dictionary<char, int>();
var res = 0;
foreach (var letter in s)
{
if (!right.ContainsKey(letter))
right[letter] = 1;
else
right[letter]++;
}
foreach (var letter in s)
{
if (!left.ContainsKey(letter))
left[letter] = 1;
else
left[letter]++;
if (right.ContainsKey(letter))
right[letter]--;
if (right[letter] == 0)
right.Remove(letter);
if (left.Count == right.Count)
res++;
}
return res;
}
}
}