# C program to find the maximum and minimum element of the array

• Difficulty Level : Hard
• Last Updated : 07 May, 2020

Given an array arr[] of N integers, the task is to write the C program to find the maximum and minimum element of the given array iteratively and recursively.

Examples:

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Input: arr[] = {1, 2, 4, -1}
Output:
The minimum element is -1
The maximum element is 4

Input: arr[] = {-1, -1, -1, -1}
Output:
The minimum element is -1
The maximum element is -1

## Recommended: Please try your approach on {IDE} first, before moving on to the solution.

Approach:

1. Let maxE and minE be the variable to store the minimum and maximum element of the array.
2. Initialise minE as INT_MAX and maxE as INT_MIN.
3. Traverse the given array arr[].
4. If the current element is smaller than minE, then update the minE as current element.
5. If the current element is greater than maxE, then update the maxE as current element.
6. Repeat the above two steps for the element in the array.

Below is the implementation of the above approach:

## Iterative Approach

 `// C program for the above approach``#include ``#include `` ` `// Function to find the minimum and``// maximum element of the array``void` `findMinimumMaximum(``int` `arr[], ``int` `N)``{``    ``int` `i;`` ` `    ``// variable to store the minimum``    ``// and maximum element``    ``int` `minE = INT_MAX, maxE = INT_MIN;`` ` `    ``// Traverse the given array``    ``for` `(i = 0; i < N; i++) {`` ` `        ``// If current element is smaller``        ``// than minE then update it``        ``if` `(arr[i] < minE) {``            ``minE = arr[i];``        ``}`` ` `        ``// If current element is greater``        ``// than maxE then update it``        ``if` `(arr[i] > maxE) {``            ``maxE = arr[i];``        ``}``    ``}`` ` `    ``// Print the minimum and maximum element``    ``printf``(``"The minimum element is %d"``, minE);``    ``printf``(``"\n"``);``    ``printf``(``"The maximum element is %d"``, maxE);`` ` `    ``return``;``}`` ` `// Driver Code``int` `main()``{`` ` `    ``// Given array``    ``int` `arr[] = { 1, 2, 4, -1 };`` ` `    ``// length of the array``    ``int` `N = ``sizeof``(arr) / ``sizeof``(arr);`` ` `    ``// Function call``    ``findMinimumMaximum(arr, N);`` ` `    ``return` `0;``}`

## Recursive Approach

 `// C program for the above approach``#include ``#include `` ` `// Recursive function to find the minimum``// and the maximum element of the array``void` `recursiveMinMax(``int` `arr[], ``int` `N,``                     ``int``* minE, ``int``* maxE)``{``    ``// Base Case``    ``if` `(N < 0) {``        ``return``;``    ``}`` ` `    ``// If current element is smaller``    ``// than minE then update it``    ``if` `(arr[N] < *minE) {``        ``*minE = arr[N];``    ``}`` ` `    ``// If current element is greater``    ``// than maxE then update it``    ``if` `(arr[N] > *maxE) {``        ``*maxE = arr[N];``    ``}`` ` `    ``// Recursive call for next iteration``    ``recursiveMinMax(arr, N - 1, minE, maxE);``}`` ` `// Function to find the minimum and``// maximum element of the array``void` `findMinimumMaximum(``int` `arr[], ``int` `N)``{``    ``int` `i;`` ` `    ``// variable to store the minimum``    ``// and maximum element``    ``int` `minE = INT_MAX, maxE = INT_MIN;`` ` `    ``// Recursive Function to find``    ``// minimum & maximum element``    ``recursiveMinMax(arr, N - 1, &minE, &maxE);`` ` `    ``// Print the minimum and maximum element``    ``printf``(``"The minimum element is %d"``, minE);``    ``printf``(``"\n"``);``    ``printf``(``"The maximum element is %d"``, maxE);`` ` `    ``return``;``}`` ` `// Driver Code``int` `main()``{`` ` `    ``// Given array``    ``int` `arr[] = { 1, 2, 4, -1 };`` ` `    ``// length of the array``    ``int` `N = ``sizeof``(arr) / ``sizeof``(arr);`` ` `    ``// Function call``    ``findMinimumMaximum(arr, N);``    ``return` `0;``}`
Output:
```The minimum element is -1
The maximum element is 4
```

Time Complexity: O(N), where N is the number of element in the given array.

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