二分查找String[]是否有存在的key值

public static boolean findIsExist(String key,String[] samList){if (samList == null || samList.length==0){return false;}//首先对数组排序Arrays.sort(samList); //通过二分查找方法在数组中搜索是否含有5int result = Arrays.binarySearch(samList, key); return result<0? false :true; }