Min and Max element of an Array

Problem Statement

You have given an array A you have to find the minimum and maximum element of that array.

Example

input: 23 22 34 12 54 21 45 67

output: 12 67

Approaches

Approach 1

you can sort the array using some sorting algorithm and return the first and last element of the array

Time Complexity : 0(n log(n)) // minimum time complexity

Space Complexity : O(1) // minimum space complexity

Approach 2

1. set minimumValue and maximumValue the first element of the array A

2. Iterate over the array and compare all the elements with minimumValue and maximumValue.

   if minimumValue \> A[i] then, minimumValue \= A[i]

3. In the end, return the minimumValue and maximumValue from the function.

Code for Approach 2

#include <bits/stdc++.h>
using namespace std;

pair<long long, long long> getMinMax(int A[], int n) {
    long long minimumValue = A[0];
    long long  maximumValue = A[0];
    for(int i = 0 ; i < n ; i++){
        if(a[i] < minimumValue) minimumValue = a[i];
        if(a[i] > maximumValue) maximumValue = a[i];
    }
    return make_pair(minimumValue , maximumValue);
}
int main()
{
    int n;
    cin>>n;
    int A[n];
    for(int i = 0 ; i < n ; i++){
        cin>>A[i];
    }
    pair<int , int> ans = getMinMax(A , n);
    cout<<ans.first<<" "<<ans.second<<endl;
    return 0;
}

input: 8

23 22 34 12 54 21 45 67

output: 12 67

Hope this article will help if you have any problem regarding this article feel free to comment.

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