Sopra Steria Interview Experience

Today, I was called for interview in Sopra Steria. Approximate 100 persons were present during the interview process. First round as technical test which consists of 2 complex questions from hackersearth websites. Though I failed in first round itself. One question I tries to solve and I solved that 80% but could not make to 2nd round. Question which I attempted is given below along with solution so that you can post and anybody can get help.

Q. 1 You have to take input from input device with the below sysntax :

Line 1 : T No of test cases to be checked.

Line 2 : Array Count.

Line 3 : No of elements of the array.

Line 4 : Kth largest element to be found. If not found return -1.

Line 2, 3 and 4 will get repeated accordingly what we have entered in line 1.

Rule : We need to find the differences of ant 2 numbers, if it is not present then we should add this to given array. So we would have all numbers difference present in array in last.

For Example : INPUT :
1
5
1 3 5 6 7
2
1
1
2

Input : Line 1 is : we want to pass 2 test cases.
Line 2 : Array size of First Array.
Line 3 : Array Elements separated by SPACE
Line 4 : Need to find out 2nd Largest elements.
Line 5 : Array Size of Second array for test case 2.
Line 6 : Array Elements
Line 7 : 2nd largest elements to be found

Output :
6
-1

Solutions :

package soptasteria;

import java.io.IOException;
import java.util.Arrays;
import java.util.Scanner;

public class Test {
    public static void main(String[] args) throws IOException
    {
        Scanner sc = new Scanner(System.in);
        int testCasesCount = sc.nextInt();
        int[] result = new int[testCasesCount];
        for (int i = 0; i < testCasesCount; i++) {
            int arraySize = sc.nextInt();
            // System.err.println("Enter arr element after arr size");

            // System.err.println("Array Entered : "+sc.nextLine());

            sc.nextLine();

            String[] strArr = sc.nextLine().split(" ");

            int[] array = makeArrayOfInteger(strArr);

            // System.out.println("Printing integer array");

            int kth = sc.nextInt();

            // System.out.println("Array Entered : ");

            printArray(array, arraySize);

            result[i] = goForBusiness(array, arraySize, kth);

            // System.out.println("Result : "+result[i]);
        }

        System.out.println("Output : ");

        for (int i = 0; i < testCasesCount; i++) {
            System.out.println(result[i]);
        }
    }

    private static int goForBusiness(int arr[], int len, int kthLargest)
    {

        int lastIndex = len;

        for (int i = 0; i < len; i++) {
            for (int j = i + 1; j < len; j++) {

                int d = Math.abs(arr[i] - arr[j]);

                // System.out.println("Checked "+i+"th and "+j+"th element with differnece : "+d);
                if (!searchInArray(arr, lastIndex, d)) {
                    arr[lastIndex++] = d;
                }
            }
        }

        Arrays.sort(arr, 0, lastIndex);
        // System.out.print("After Sort : ");
        // printArray(arr, lastIndex);
        if (kthLargest > lastIndex)
            return -1;

        return arr[lastIndex - kthLargest];
    }

    private static int[] makeArrayOfInteger(String[] str)
    {
        int[] arr = new int[str.length * 4];
        for (int i = 0; i < str.length; i++)
            arr[i] = Integer.parseInt(str[i]);
        return arr;
    }

    private static boolean searchInArray(int arr[], int len, int ele)
    {
        for (int i = 0; i < len; i++)
            if (arr[i] == ele)
                return true;
        return false;
    }

    private static void printArray(int arr[], int len)
    {
        for (int i = 0; i < len; i++)
            System.out.print(" " + arr[i]);
        System.out.println("");
    }
}