Objective C实现的简单的二分查找，查找前快速排序。-Objective C to achieve a simple binary search, find quick sort before.

二分查找的实现 输入一个数组，程序将对其进行排序，并打印出排序结果 再输入一个数，程序会查找这个数在已排序数组中的位序，并打印出来-Find the realization of two Enter an array, the program will be sorted, sort and print out the results Then enter a number, the program will find this number in the sorted ar