This C code computes permutations of a number. Can you modify it to compute arrangements of a number? Modify this code, dont write another code.

#include void init(int x[] , int n); int valid(int x[] , int k); void print_sol(int x[] , int n); void backtrack_permut(int n){ int x[n] ; init(x,n); int k = 0,ok ; while(k >= 0){ ok = 0; while(x[k]