Use the divide-and-conquer approach to write an java algorithm that finds the largest item in a list of n items. Analyze your algorithm and show the results in order notation.
Use the divide-and-conquer approach to write an java
It appears you've provided a Java program that finds the largest item in an array using the divide-and-conquer approach and reads input from the user using a Scanner.
Here's a breakdown of the program:
findLargest method: This method takes an integer array as input and checks if the array is valid. If the array is not valid, it throws an
IllegalArgumentException. Otherwise, it calls thefindLargestUtilmethod, passing the array, left index (0), and right index (arr.length - 1).findLargestUtil method: This method recursively finds the largest element in the given array. It checks for the base case where left index is equal to the right index. If true, it means there is only one element in the array, and it returns that element. Otherwise, it finds the midpoint and recursively calls
findLargestUtilon the left and right halves of the array. It returns the maximum of the largest elements from the left and right halves.main method: This method is used to take input from the user. It uses a
Scannerto read an integerndenoting the size of the array. Then, it readsnintegers and stores them in thearrarray. Finally, it calls thefindLargestmethod with the input array and prints the largest item in the array.
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