Quick Answer: How Do You Reverse An Array Map?

How do you reverse an array in C++?

#include #include using namespace std;// Utility function to print contents of an array.

void print(int arr[], int n){ for (int i = 0; i < n; i++) {cout << arr[i] << " "; }}// Utility function to reverse elements of an array.

void reverse(int arr[], int n){More items….

How do I print an array in reverse order?

JAVApublic class ReverseArray {public static void main(String[] args) {//Initialize array.int [] arr = new int [] {1, 2, 3, 4, 5};System.out.println(“Original array: “);for (int i = 0; i < arr.length; i++) {System.out.print(arr[i] + " ");}More items...

How do you reverse an array pointer?

Approach : In reverse function we take two pointers one pointing at the beginning of the array, other pointing at end of the array. The contents of the memory location pointed by these two pointers are swapped and then the value of first pointer is increased and that of second pointer is decreased .

How do you reverse an array in python without function?

# Get list length.L = len(numbers)# i goes from 0 to the middle.for i in range(int(L/2)):# Swap each number with the number in.# the mirror position for example first.# and last.n = numbers[i]More items…•Aug 14, 2018

How do you reverse an array?

Algorithm to reverse an arrayInput the number of elements of an array.Input the array elements.Traverse the array from the last.Print all the elements.Mar 11, 2020

How do you reverse an array in Java?

Reversing an array in java can be done in three simple methods. The first method is as follows: (i) Take input the size of array and the elements of array. (ii) Consider a function reverse which takes the parameters-the array(say arr) and the size of the array(say n).

How do you reverse an array without using another array?

Steps to reverse an array without using another array in C: Set i=0 to point to the first element and j=length-1 to point to the last element of the array. Run while loop with the condition i

How do you print an array in reverse order in Python?

6. Python program to print the elements of an array in reverse orderSTEP 1: Declare and initialize an array.STEP 2: Loop through the array in reverse order that is, the loop will start from (length of the array – 1) and end at 0 by decreasing the value of i by 1.STEP 3: Print the element arr[i] in each iteration.

How do you store an array in reverse order?

Logic to print array in reverse orderInput size and elements in array from user. Store it in some variable say size and arr .Run a loop from size – 1 to 0 in decremented style. The loop structure should look like for(i=size-1; i>=0; i–) .Inside loop print current array element i.e. arr[i] .Jul 17, 2015

How do you reverse an array recursively?

Recursive Way : Initialize start and end indexes as start = 0, end = n-1. Swap arr[start] with arr[end] Recursively call reverse for rest of the array.Sep 8, 2020