Description

In this program the array elements will be space separated like string. The program
will take elements from string rejecting spaces, then it will find maximum and 
second maximum.

C/C++

/* c Program to find maximum and second maximum if elements of array is space separated input */
//Save it as MaxAndSecondMaxElement.c

#include<stdio.h>
#include<string.h>
#include<limits.h>
int main(){

    char str[100];
    int i, maxVal, secondMax;

    //Array elements are space separated input like string
    printf("Enter the space separated array elements : ");
    gets(str);

    int length = strlen(str);

    int arr[length];
    int count=0;

    //Take input only those having value and reject space
    for(i=0;i<length;i++) {
        if(str[i] == ' '){
            continue;
        }else{
            arr[count++] = (str[i] - '0');
        }
    }

    maxVal = INT_MIN;
    //Checking the maximum element
    for(i=0;i<count;i++) {
        if(arr[i] > maxVal) {
            maxVal = arr[i];
        }
    }

    printf("The maximum value : %d",maxVal);

    secondMax = INT_MIN;

    //Checking the second maximum element
    for(i=0;i<count;i++) {
        if(arr[i]>secondMax && arr[i]!=maxVal) {
            secondMax = arr[i];
        }
    }

    printf("\nThe second maximum value : %d",secondMax);

    return 0;
}

Input:
Enter the space separated array elements : 
7 4 6 9

Output:
The maximum value : 9
The second maximum value : 7

Java

/* Java Program to find maximum and second maximum if elements of array is space separated input */
//Save it as MaxAndSecondMaxElement.java

import java.io.*;
import java.util.Scanner;

public class MaxAndSecondMaxElement {

    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);
        
                //Array elements are space separated input like string
        System.out.println("Enter the space separated array elements : ");
        String str = scanner.nextLine();
        
                //spliting the from spaces
        String arr[] = str.split(" ");
        
                //declaring an integer array of length
        int array[] = new int[arr.length];
        
                //Taking input by converting it into integer
        for(int i=0;i<arr.length;i++) {
            array[i] = Integer.parseInt(arr[i]);
        }
        
        int max = Integer.MIN_VALUE;
        
                //Checking the maximum element
        for(int i=0;i<array.length;i++) {
            if(array[i] > max) {
                max = array[i];
            }
        }
        
        System.out.println("The maximum value : "+max);
        
        int secondMax = Integer.MIN_VALUE;
        
                //Checking the econd maximum element
        for(int i=0;i<array.length;i++) {
            if(array[i]>secondMax && array[i]!=max) {
                secondMax = array[i];
            }
        }
        System.out.println("The second maximum value : "+secondMax);
    }
}

Input:
Enter the space separated array elements : 
7 4 6 9

Output:
The maximum value : 9
The second maximum value : 7

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