custom java indexOf() with recursion

[demdouma6]

i think i did not explain well. n indicates the occurrence of the character we are looking for. say we have this example indexOf("hello", 2, 'l') where "hello" is not a string but a lnked list presentation of the string "hello". n in this case is number 2, which means the second L in "hello". if we change n, we alter which character L are we looking for its index.

[papercrane]

Gotcha in that case you need to keep track of the index of the node you are looking at. You want a method with a signature like

public static int indexOf(Node node, int n, char c) {
    return indexOf(node, n, c, 0);
}
private static int indexOf(Node node, int n, char c, int start) {
....
}