本代码能够利用二分法从原有数组中查找到想要得到的值，只要输入的数字存在于数组中，则能够被找到，若不存在，则提示错误，适合初学者借鉴。-This code can take advantage of the dichotomy from the original array to find the value that you want to get, just enter the number exists in the array, then can be found, if not exis