最大乘积

public class Solution {
    public int cutRope(int target) {
        if(target == 2) return 1;
        int r = 1;
        for(int i = 1; i <= target/2; ++i){
            r = Math.max(i*cutRope(target - i), i*(target - i));
        }
        return r;
    }
}