Explain me this code by explaining how the call stack proceeds and also show how the for loop proceeds in each execution. You must draw diagrams to explain as well. You must VERY VERY detailed whilst explaining.

#include using namespace std;

void display_permutation(char str[], int i = 0) { if (str[i] == '\0') { cout << str << " "; //ABC ACB BAC BCA CBA CAB return; } for (int j = i; str[j] != '\0'; j++) { swap(str[i], str[j]); display_permutation(str, i + 1); swap(str[i], str[j]); } }

int main() { char str[] = "ABC"; display_permutation(str); }