Question

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

Answer 1

public class Program
{
	public static int GetNthIndexOfCh(String s, char ch, int n) {
		int count = 0;

		for (int i = 0; i <= s.length() - 1; i++) {
			if (s.charAt(i) == ch) {
				count += 1;
				if (count == n) {
					return i;
				}
			}
		}

		return -1;
	}

	public static void main(String[] args)
	{
		String str = "java c++ python c# javascript";

		System.out.println(GetNthIndexOfCh(str, 'a', 3));
	}
}



/*
run:
    
20
    
*/

 

70+ SQL courses for beginners and professionals