Question

How to find the first repeated character in a string with TypeScript

Answer 1

function GetFirstRepeatedCharacter(str : string) {
    for (let i = 0; i < str.length; i++) {
        if (str.indexOf(str.charAt(i)) != str.lastIndexOf(str.charAt(i))) {
            return str.charAt(i);
        }
    }
    return ' ';
}
  
  
const str : string = "java python typescript c c++ csharp php";
  
  
console.log(GetFirstRepeatedCharacter(str));
  
  
  
    
    
/*
run:
    
"a"
    
*/

 

 

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