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Commitad912fb

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Added additional solution to csharp/0003-longest-substring-without-repeating-characters.cs
1 parent9014b37 commitad912fb

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1 file changed

+47
-5
lines changed

1 file changed

+47
-5
lines changed
Lines changed: 47 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -1,19 +1,61 @@
1-
publicclassSolution{
2-
publicintLengthOfLongestSubstring(strings){
1+
// hashset
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publicclassSolution
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{
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publicintLengthOfLongestSubstring(strings)
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{
36
intleftPointer=0,rightPointer=0,maxLength=0;
47
HashSet<int>chars=newHashSet<int>();
58

6-
while(rightPointer<s.Length){
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while(rightPointer<s.Length)
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{
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charcurrChar=s[rightPointer];
8-
if(chars.Contains(currChar)){// Move left pointer until all duplicate chars removed
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if(chars.Contains(currChar))
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{
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// Move left pointer until all duplicate chars removed
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chars.Remove(s[leftPointer]);
1016
leftPointer++;
11-
}else{
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}
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else
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{
1220
chars.Add(currChar);
1321
maxLength=Math.Max(maxLength,rightPointer-leftPointer+1);
1422
rightPointer++;
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}
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}
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returnmaxLength;
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}
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}
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//bitmask
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publicclassSolution
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{
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privateInt128ONE=1;
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publicintLengthOfLongestSubstring(strings)
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{
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intConvert(charch)=>ch-' ';
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Int128mask=0;
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intl=0,r=0,output=0;
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while(r<s.Length)
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{
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Int128temp=mask^(ONE<<Convert(s[r]));
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if(temp<mask)
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{
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while(s[l]!=s[r])
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{
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mask^=ONE<<Convert(s[l]);
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l++;
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}
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mask^=ONE<<Convert(s[l]);
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l++;
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}
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else
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{
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mask=temp;
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output=Math.Max(output,r-l+1);
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r++;
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}
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}
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returnoutput;
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}
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}

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