detect duplicate character in string
126
How do I compare strings in Java?
63349
How to string-compare for a single space
12419
How to check if a String contains another String in a case insensitive manner in Java?
58046
How to check whether a string contains a substring in JavaScript?
57228
Check for whitespace at beginning of string
134283
Identify duplicate lines in a file without deleting them?
52705
Find character with most occurrences in string?
137306
Comparing two strings in C?
478
How to determine if string contains specific substring within the first X characters
148456
Regex to remove duplicate letters
105674
How do I get an array of repeated characters from a string using LINQ?
35365
What is the easiest/best/most correct way to iterate through the characters of a string in Java?
14800
How do I check if a string contains a specific word?
100970
Remove first character from a string if it is a comma
25966
compare and update a string
112077
How to check if a value already exists to avoid duplicates?
43107
Count the number occurrences of a character in a string