#include <stdio.h>
#include <stdbool.h>
#define MAX 7
int intArray[MAX] = {4,6,3,2,1,9,7};
void printline(int count) {
int i;
for(i = 0;i <count-1;i++) {
printf("=");
}
printf("=\n");
}
void display() {
int i;
printf("[");
// navigate through all items
for(i = 0;i<MAX;i++) {
printf("%d ", intArray[i]);
}
printf("]\n");
}
void selectionSort() {
int indexMin,i,j,temp;
// loop through all numbers
for(i = 0; i < MAX-1; i++) {
// set current element as minimum
indexMin = i;
// check the element to be minimum
for(j = i+1;j<MAX;j++) {
if(intArray[j] < intArray[indexMin]) {
indexMin = j;
}
}
if(indexMin != i) {
printf("Items swapped: [ %d, %d ]\n" , intArray[i], intArray[indexMin]);
// swap the numbers
temp = intArray[indexMin];
intArray[indexMin] = intArray[i];
intArray[i] = temp;
}
printf("Iteration %d#:",(i+1));
display();
}
}
main() {
printf("Input Array: ");
display();
printline(50);
selectionSort();
printf("Output Array: ");
display();
printline(50);
}
If we compile and run the above program, it will produce the following result ?
<hr>
Input Array: [4 6 3 2 1 9 7 ]
==================================================
Items swapped: [ 4, 1 ]
Iteration 1#:[1 6 3 2 4 9 7 ]
Items swapped: [ 6, 2 ]
Iteration 2#:[1 2 3 6 4 9 7 ]
Iteration 3#:[1 2 3 6 4 9 7 ]
Items swapped: [ 6, 4 ]
Iteration 4#:[1 2 3 4 6 9 7 ]
Iteration 5#:[1 2 3 4 6 9 7 ]
Items swapped: [ 9, 7 ]
Iteration 6#:[1 2 3 4 6 7 9 ]
Output Array: [1 2 3 4 6 7 9 ]
==================================================
Press any key to continue . . .
First understand the algorithm carefully. Then study the program line-by-line and compare it with the output. Finally, review the explanation section to strengthen your logic and programming understanding.
Rewrite the program without looking at the code. Modify values, conditions or logic and run it again. This helps improve confidence and strengthens coding skills much faster.