分治求数组最大值JAVA实现

分治思想求数组最大值

public class DivideConquerDemo {
    public static void main(String[] args) {
        int[] arr = new int[]{1,6,8,9,2,4,6,18,3,5,7,9,2,5};
        int n = arr.length;
        System.out.println("数组最大的数是：" + findMax(arr, 0, n-1));
    }

    public static int findMax(int[] A, int l, int r){
        int m = (l+r)/2;
        int x, u, v;
        if(l==r-1){return A[l];}
        else{
            u = findMax(A,l,m);
            v = findMax(A,m,r);
            x = Math.max(u,v);
        }
        return x;
    }
}