Question

Please use java language in an easy way and comment as much as you can! Thanks

1. (Write a code question) Write a generic method called "findMin" that takes an array of Comparable objects as a parameter. (Use proper syntax, so that no type checking warnings are generated by the compiler.) The method should search the array and return the index of the smallest value.

Answer 1

//TestCode.java
public class TestCode {
    public static <E extends Comparable<E>> E findMin(E[] arr) {
        E max = arr[0];
        for (int i = 1; i < arr.length; i++) {
            if (arr[i].compareTo(max) < 0) {
                max = arr[i];
            }
        }
        return max;
    }

    public static void main(String[] args)
    {
        String arr[] = {"ghi","xyz","abc","def"};
        System.out.println(findMin(arr));
    }
}

public static <E extends Comparable<E>> E findMax(E[] arr) {
    E max = arr[0];
    for (int i = 1; i < arr.length; i++) {
        if (arr[i].compareTo(max) > 0) {
            max = arr[i];
        }
    }
    return max;
}