How do you shuffle an array in c programming?

Answer 1

Values are the only factor that can be shuffled in C Programming. You cannot shuffle the array itself, but the values of them can be shuffled and assigned to new element of array. To shuffle the values of an array, the array that will be shuffled must first be initialized or assigned to any values. Also, you must declare one (1) variable that will temporarily store numbers to be shuffled.
Example:
int arrNum [5];
int intTemp;
arrNum [0] = 3;
arrNum [1] = 8;
arrNum [2] = 4;
arrNum [3] = 7;
arrNum [4] = 1;

Using a for loop, assign the first value of the array to any elements to the array. switch these values to shuffle them. To randomize the shuffle, use . Also, try to seed random numbers to randomize each time you run the program.

#include
#include

int main(void) {

int arrNum [5];

int intTemp;

int randArr;

int ctr;

srand(time(NULL)); //seed and randomize number based on time

arrNum [0] = 3;

arrNum [1] = 8;

arrNum [2] = 4;

arrNum [3] = 7;

arrNum [4] = 1;

for (ctr = 0; ctr < 5; ctr++) {

randArr = 0 + rand() % 4; // Assign a random number to randArr from 0 to 4

intTemp = arrNum[randArr];

arrNum[randArr] = arrNum[ctr];

arrNum [ctr] = intTemp;

}

return 0;
}