Coins in a Line

Easy Coins in a Line

37%

Accepted

There are n coins in a line. Two players take turns to take one or two coins from right side until there are no more coins left. The player who take the last coin wins.

Could you please decide the first play will win or lose?

Have you met this question in a real interview? 

Yes

Example

n = 1, return true.

n = 2, return true.

n = 3, return false.

n = 4, return true.

n = 5, return true.

Challenge

O(n) time and O(1) memory

public class Solution {

    /**

     * @param n: an integer

     * @return: a boolean which equals to true if the first player will win

     */

    public boolean firstWillWin(int n) {

        // write your code here

        return n % 3 != 0;

    }

}