Java Coding Problems

Computing maximum and minimum

Computing the maximum value of an array of numbers can be implemented by looping the array and tracking the maximum value via a comparison with each element of the array. In terms of lines of code, this can be written as follows:

public static int max(int[] arr) {  int max = arr[0];  for (int elem: arr) {    if (elem > max) {      max = elem;    }  }  return max;}

A little pinch in readability here may entail using the Math.max() method instead of an if statement:

...max = Math.max(max, elem);...

Let's suppose that we have the following array of integers and a utility class named MathArrays that contains the preceding methods:

int[] integers = {2, 3, 4, 1, -4, 6, 2};

The maximum of this array can easily be obtained as follows: ...