General/Decoding.cpp at main · Devansh30032004/General · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
#include <bits/stdc++.h>
using namespace std;

int main()
{
    int n;
    cin>>n;
    string s;
    cin>>s;
    char arr[n];
    int mid;
    if(n%2!=0)
       mid=(n+1)/2;
    else
       mid=n/2;
    arr[mid-1]=s[0];
    int j=1,k=1;
    if((n%2)!=0){
    for(int i=2;i<=n;i++){
        if(i%2==0){
            arr[mid-j-1]=s[i-1];
            j++;
        }
        else{
            arr[mid+k-1]=s[i-1];
            k++;
        }
    }
    }else{
        for(int i=2;i<=n;i++){
        if(i%2!=0){
            arr[mid-j-1]=s[i-1];
            j++;
        }
        else{
            arr[mid+k-1]=s[i-1];
            k++;
        }
    }
    }
    for(int i=0;i<n;i++){
        cout<<arr[i];
    }

}