java 二分法查找最接近的一个数字

public static Integer getNumberThree(Integer[] intarray,Integer number){
    int index = Math.abs(number-intarray[0]);
    int result = intarray[0];
    for (int i : intarray) {
        int abs = Math.abs(number-i);
        if(abs <= index){
            index = abs;
            result = i;
        }
    }
    return result;
}