Thread: Insertion points in Array using Binary Search using Comparable

Can't figure out what's wrong. Operator is undefined for argument type. Error is located at the end of the binarysearch method array[position] < key

import java.util.Arrays;
 
public class binarySearch {
 
    public static <T extends Comparable<T>> int binarysearch(T key, T[] array) {
        int start = 0;
        int end = array.length - 1;
        int position =-1;
        while (start <= end && position == -1) {
            int mid = start + (end - start) / 2;
            if (array[mid].compareTo(key) > 0) {
            end = position - 1;
            } else if (array[mid].compareTo(key) < 0) {     
                start = position + 1;
            } else {
            	position = mid;
            }
        } 
 
        if (position == -1) { //if the target is not found, find the position to insert
        	position = start;
        while (position < end && array[position] < key) { //error is here
        	position ++;
        	position --; //insert after position
        }
    }
        return position;
    }
 
 
    public static void main(String[] Args) {
 
        int key;
        Integer[] array = {2, 3, 6, 22, 23, 31, 32, 34, 41, 43};
        key = 1; //integer being inserted
        System.out.println("\nTestcase 1\nelement inserted to the left and not already present");
        System.out.println("Array : "+Arrays.toString(array));
        System.out.println("Value to be inserted "+ key);
        System.out.println("The Key can has to be inserted at index " + binarysearch(key, array));
}
}

--- Update ---

figured it out, thanks.

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