You need to check if all characters in a given string are unique. Assume the string contains only ASCII characters. How'd you do it?

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2024-11-03 09:55

You need to check if all characters in a given string are unique. Assume the string contains only ASCII characters. How'd you do it?

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Ramon Sorage
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一小時內	David Vanni dax85x	Distinct and counting if equals the string length bool allCharsUnique = (text.Distinct().ToArray().Length == text.Length);
2 小時內	Waffl wafflchat	The answer to all leet code challenges is “hashmap”
3 小時內	M@rk B tremendous_dynamiterr24	Cut and paste into a spreadsheet. Count characters. Count unique characters
5 小時內	蔡孟修 mathtsai	bool exist[256] = {false}; Scan through s.
9 小時內	Steve herspacemonkeymafia	long mask[4] = [0,0,0,0]; Int offset = 0; If (len(str) > 128) return false; For (i=0,i<len(str);i++){ offset=str[i]>>5; if(mask[offset]&&(1<<(str[i]&&31))>0)return false; else mask[offset]\|=1<<(str[i]&&31); } return true;