rakib.cpp

#include <bits/stdc++.h>
using namespace std;

#define IN freopen("in.txt", "r", stdin);
#define OUT freopen("out.txt", "w", stdout);
#define LL long long int
#define MX 500001
#define max3(a, b, c) max(a, max(b, c)
#define min3(a, b, c) min(a, min(b, c)
#define max4(a, b, c, d) max(a, max3(b, c, d)
#define min4(a, b, c, d) min(a, min3(b, c, d)
#define EPS 1e-9
#define MOD 1000000007
#define PI 2.0 * acos(0.0)
typedef pair <int, int> PII;

int main() {
    //IN OUT        //ThisIsForDebuggingPurposes
    int a[4] = {1, 7, 13, 37};  //  first sub-array
    int b[3] = {12, 18, 33};    //  2nd sub-array

    int c[7];   //  mergered array

    for (int i = 0, j = 0, k = 0; i < 4 || j < 3;) {    //  i used for a & j used for b & k used for c
        if (i < 4 && j < 3) {
            if (a[i] < b[j]) {  //  i have to choose value from unused element of both sub-array
                c[k] = a[i];
                i++;
                k++;
            }
            else {
                c[k] = b[j];
                j++;
                k++;
            }
        }
        else if (i < 4) {   //  only array a is left, array b is fully used, so i can take value only from array a
            c[k] = a[i];
            i++;
            k++;
        }
        else if (j < 3) {   //  only array a is left, array b is fully used, so i can take value only from array b
            c[k] = b[j];
            j++;
            k++;
        }
    }

    for (int i = 0; i < 7; i++)
        cout << c[i] << " ";
}