C Exercises: Double its value and replace the next number with 0 if current and next value are same and shift all 0's to the end
C Array: Exercise-106 with Solution
Write a C program to convert an array in such a way that it doubles its value. This will replace the next element with 0 if the current and next elements are the same. This program will rearrange the array so that all 0's are moved to the end.
Sample Solution:
C Code:
#include<stdio.h>
// Function to move all non-zero elements to the beginning of the array
void ZerosAtEnd(int arr1[], int n)
{
int ctr = 0;
for (int i = 0; i < n; i++)
if (arr1[i] != 0)
arr1[ctr++] = arr1[i]; // Shift non-zero elements to the front
while (ctr < n)
arr1[ctr++] = 0; // Fill remaining positions with zeros
}
// Function to update the array by merging consecutive identical non-zero elements and moving zeros to the end
void updateArrayRearrange(int arr1[], int n)
{
if (n == 1)
return; // If the array has only one element, return without any change
for (int i = 0; i < n - 1; i++)
{
if ((arr1[i] != 0) && (arr1[i] == arr1[i + 1]))
{
arr1[i] = 2 * arr1[i]; // Merge consecutive identical elements by doubling the first element
arr1[i + 1] = 0; // Set the next element as 0
i++; // Skip the next element as it's already processed
}
}
ZerosAtEnd(arr1, n); // Move all zeros to the end of the array
}
// Function to print the array
void ArrayPrinting(int arr1[], int n)
{
for (int i = 0; i < n; i++)
printf("%d ",arr1[i]); // Print each element of the array
}
// Main function
int main()
{
int arr1[] = { 0, 3, 3, 3, 0, 0, 7, 7, 0, 9 };
int n = sizeof(arr1) / sizeof(arr1[0]);
printf("The given array is: ");
ArrayPrinting(arr1, n); // Display the initial array
updateArrayRearrange(arr1, n); // Update the array by merging consecutive identical elements and moving zeros
printf("\nThe new array is: ");
ArrayPrinting(arr1, n); // Display the modified array
return 0;
}
Sample Output:
The given array is: 0 3 3 3 0 0 7 7 0 9 The new array is: 6 3 14 9 0 0 0 0 0 0
Flowchart 1:

Flowchart 2:

C Programming Code Editor:
Previous C Programming Exercise: Minimum swaps to gather all elements less or equal to k.
Next C Programming Exercise: Concatenate two arrays.
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