Comp Sci Find the Second Largest Integer in a Java Array | Simple Function Example

[bc030400412]

Q1. Write a function that accepts an array of integers and returns the second largest integer in the array. Return -1 if there is no second largest.

The signature of the function is

public class ID
{
public static void main(String[] args){ }
int f(int[ ] a) { }

}

Examples:

if the input array is {1, 2, 3, 4} then return 3
if the input array is {{4, 1, 2, 3}} then return 3
if the input array is {1, 1, 2, 2} then return 1
if the input array is {1, 1} then return -1
if the input array is {1} then return -1
if the input array is {} then return -1

 

[DefaultName]

Ok, you have the signature, what about the actual code?

The examples you've given doesn't demonstrate you've attempted the program. Anyone can pick the second largest number in a set. Please show us some code.

 

[ikramgift]

public static void main(String[] args) {
// TODO code application logic here

int secondlargest= -1;
int largest = -1;

int number[] ={4, 1, 2, 3};

for (int i=0;i < number.length;i++)
{

if(largest < number )
{
secondlargest = largest;
largest = number;
}

if(secondlargest < number && largest != number )
secondlargest = number;

}

System.out.println(secondlargest);
//System.out.println(largest);
// System.out.println(objhwa.data); // Display the string.


}