# Program to count the frequency of each element of an array.

Here, we have a basic program example to count the frequency of array elements using different languages. This program is created in c language, c++, Java, and Python.

## Code to count the element frequency of array elements in C language

```#include <stdio.h>
void main()
{
int arr1[100], arr2[100];
int n, i, j, ctr;

printf("Input the number of elements to be stored in the array :");
scanf("%d",&n);

printf("Input %d elements in the array :\n",n);
for(i=0;i<n;i++)
{
printf("element - %d : ",i);
scanf("%d",&arr1[i]);
arr2[i] = -1;
}
for(i=0; i<n; i++)
{
ctr = 1;
for(j=i+1; j<n; j++)
{
if(arr1[i]==arr1[j])
{
ctr++;
arr2[j] = 0;
}
}

if(arr2[i]!=0)
{
arr2[i] = ctr;
}
}
printf("\nThe frequency of all elements of array : \n");
for(i=0; i<n; i++)
{
if(arr2[i]!=0)
{
printf("%d occurs %d times\n", arr1[i], arr2[i]);
}
}
}
```

## Code to count the element frequency of array elements in C++ language

```#include <iostream>
using namespace std;

int main()
{
int arr1[100], arr2[100];
int n, i, j, ctr;

cout<<"Input the number of elements to be stored in the array : ";
cin>>n;

cout<<"Input "<<n<<" elements in the array : \n";
for(i=0;i<n;i++)
{
cout<<"element - "<<i<<" : ";
cin>>arr1[i];
arr2[i] = -1;
}
for(i=0; i<n; i++)
{
ctr = 1;
for(j=i+1; j<n; j++)
{
if(arr1[i]==arr1[j])
{
ctr++;
arr2[j] = 0;
}
}

if(arr2[i]!=0)
{
arr2[i] = ctr;
}
}
cout<<"\nThe frequency of all elements of array : \n";
for(i=0; i<n; i++)
{
if(arr2[i]!=0)
{
cout<<arr1[i]<<" occurs "<<arr2[i]<<" times\n";
}
}
}
```

## Code to count the element frequency of array elements in Python language

```arr1=[]
arr2=[]
n=int(input("Input the number of elements to be stored in the array : "))
print("Input ", n , " elements in the array :")
for i in range(0,n):
l=int(input())
arr1.append(l)

for i in range(0,n):
flag = False
count = 0
for j in range(i+1,n):
if(arr1[i]==arr1[j]):
flag = True
break

if flag == True:
continue

for j in range(0,i+1):
if(arr1[i]== arr1[j]):
count += 1

print("{0} occurs {1}".format(arr1[i],count)," times")
```

## Code to count the element frequency of array elements in Java language

```import java.util.*;
public class arrays
{
public static void main(String[] args)
{
int n,ctr;
Scanner sc = new Scanner(System.in);
System.out.print("Input the number of elements to be stored in the array : ");
n=sc.nextInt();

int[] arr1 = new int[n];
int[] arr2 = new int[n];

System.out.println("Input "+n+" elements in the array :\n");
for(int i=0; i<n; i++)
{
arr1[i]=sc.nextInt();
arr2[i] = -1;
}
for(int i=0; i<n; i++)
{
ctr = 1;
for(int j=i+1; j<n; j++)
{
if(arr1[i]==arr1[j])
{
ctr++;
arr2[j] = 0;
}
}

if(arr2[i]!=0)
{
arr2[i] = ctr;
}
}
System.out.println("\nThe frequency of all elements of array : \n");
for(int i=0; i<n; i++)
{
if(arr2[i]!=0)
{
System.out.println(arr1[i]+" occurs "+arr2[i]+" times\n");
}
}

}
}
```