你如何找到字符串中最大值和最小值的平均值？

Question

I am currently experimenting with Strings in Java.

For example you have a string "1234 Hello 56789" and now you want to calculate the average of the max and min value, which is (1234/5678)/2 = 58023 .

How do you do that?

I tried Integer.parseInt which gives me an error.

I tried replaceAll("[^0-9]", "") which does not get me the min and max and therefore the avg. It outputs 123456789 which I do not want.

I also tried replaceAll("[^0-9]", "").split("\\\\D+") which just gives me 1234 56789 , but I don't know how to get the min and max.

Answer 1

I also tried replaceAll("[^0-9]", "").split("\\\\D+")

This is a good first step. It will give you an array of strings ( String[] ). It is probably a good idea to then convert this to an int[] . See Converting a String array into an int Array in java

Once you have an int[] , you can calculate the max and the min by referring to Finding the max/min value in an array of primitives using Java

By the way, the average is not (1234/5678)/2. It is (1234 + 5678)/2