Question

How to find the index of Nth occurrence of a character in a string with TypeScript

Answer 1

function GetNthIndexOfCh(s: string, ch: string, n: number) {
    let count: number = 0;
    
    for (let i: number = 0; i <= s.length - 1; i++) {
        if (s[i] == ch) {
            count++;
            if (count == n) {
                return i;
            }
        }
    }
    
    return -1;
}

const str: string = "java c++ python typescript javascript";

console.log(GetNthIndexOfCh(str, 'a', 3));



/*
run:

28

*/

 

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