Method insertCharAt

java/Chapter 9/Question9_5/Question.java:29–33

(String word, char c, int i)

	}
	
	public static String insertCharAt(String word, char c, int i) {
		String start = word.substring(0, i);
		String end = word.substring(i);
		return start + c + end;
	}
	
	public static void main(String[] args) {
		ArrayList<String> list = getPerms("abcde");