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Substrings of Size Three with Distinct Characters

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	`1`	`+Link: https://leetcode.com/problems/substrings-of-size-three-with-distinct-characters/`
	`2`	`+Language: C#`
	`3`	`+`
	`4`	`+`
	`5`	`+`
	`6`	`+`
	`7`	`+`
	`8`	`+`
	`9`	`+`
	`10`	`+public class Solution {`
	`11`	`+ public int CountGoodSubstrings(string s)`
	`12`	`+ {`
	`13`	`+ StringBuilder sb = new StringBuilder(3);`
	`14`	`+ int counter = 0;`
	`15`	`+`
	`16`	`+ for (int i = 0; i < s.Length; i++)`
	`17`	`+ {`
	`18`	`+ sb.Append(s[i]);`
	`19`	`+`
	`20`	`+ if (sb.Length == 3)`
	`21`	`+ {`
	`22`	`+ if (sb[0] != sb[1] && sb[0] != sb[2] && sb[1] != sb[2])`
	`23`	`+ counter++;`
	`24`	`+`
	`25`	`+ sb.Remove(0, 1);`
	`26`	`+ }`
	`27`	`+ }`
	`28`	`+`
	`29`	`+ return counter;`
	`30`	`+ }`
	`31`	`+}`

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