C program to find the frequency of element in an array

By -

/* C program to find the frequency of each element of array */


#include <stdio.h>

int main()
{
    int arr[100], freq[100];
    int size, i, j, count;

    /* Input size of array */
    printf("\nEnter size of array: ");
    scanf("%d", &size);

    /* Input elements in array */
    printf("\nEnter elements in array: ");
    for(i=0; i<size; i++)
        {
        scanf("%d", &arr[i]);

        /* Initially initialize frequencies to -1 */
        freq[i] = -1;
        }
    for(i=0; i<size; i++)
    {
    count = 1;
        for(j=i+1; j<size; j++)
        {
        /* If duplicate element is found */
            if(arr[i]==arr[j])
            {
                count++;

                /* Make sure not to count frequency of same element again */
                freq[j] = 0;
            }
        }

    /* If frequency of current element is not counted */
    if(freq[i] != 0)
        {
            freq[i] = count;
        }
    }
    /* Print frequency of each element */
    printf("\nFrequency of all elements of array : \n");
    for(i=0; i<size; i++)
    {
        if(freq[i] != 0)
        {
        printf("%d occurs %d times\n", arr[i], freq[i]);
        }
    }
}

 OUTPUT


Comments

Post a Comment

Popular posts from this blog

C program that contains a string XOR each character in this string with 0 ,127

By -
Write a C program that contains a string (char pointer) with a value \Hello World’. The program should XOR each character in this string with 0 and displays the result. Program: #include<stdlib.h> main() { char str[]="Hello World"; char str1[11]; int i,len; len=strlen(str); for(i=0;i<len;i++) { str1[i]=str[i]^0; printf("%c",str1[i]); } printf("\n"); } Q.2 Write a C program that contains a string (char pointer) with a value \Hello World’. The program should AND or and XOR each character in this string with 127 and display the result. PROGRAM: #include <stdio.h> #include<stdlib.h> void main() { char str[]="Hello World"; char str1[11]; char str2[11]=str[]; int i,len; len = strlen(str); for(i=0;i<len;i++) { str1[i] = str[i]&127; printf("%c",str1[i]); } printf("\n"); for(i=0;i<len;i++) { str3[i] = str2[i]^127; printf("%c",str3[i]); } pri
Read more

Queue in Data Structure(DS)

By -
Image
Queue Queues are data structures that follow the First In First Out (FIFO) i.e. the first element that is added to the queue is the first one to be removed. Elements are always added to the back(rear) and removed from the front. Think of it as  a line of people waiting for a bus. The person who is at the beginning of the line is the first one to enter the bus.   Basic features of Queue Like a stack, the queue is also an ordered list of elements of similar data types. A queue is a FIFO( First in First Out ) structure. Once a new element is inserted into the Queue, all the elements inserted before the new element in the queue  must be removed, to remove the new element. In a simple queue, there is a disadvantage after deleting element we cannot insert the element in the queue because of insertion  is possible from the rear but deletion is performed from the front.                                           insertion                                     ------------------
Read more

Implementation of stack Using Array

By -
Implementation  of stack Using Array #include<stdio.h> void pop(); void push(); void display(); int i,n,ch=0,top,item,stack[50]; int main() {     printf("Enter the number of element in Stack:\t");     scanf("%d",&n);     top=-1;     printf("Stack Operations");     printf("\n1.Push\n2.Pop\n3.Display\n4.Exit\n");    do     {         printf("Enter the choice: ");         scanf("%d",&ch);         switch(ch)         {             case 1:push();                    break;             case 2:pop();                    break;             case 3:display();                    break;             case 4:exit(0);                    break;             default:printf("!!Wrong choice!!\n");         }     }     while(ch!=4);     return 0; } void push(int item) {     if(top==n-1)         printf("Overflow\n");     else     {        
Read more