solution in java

Scanner scanner = new Scanner (System.in); StringBuilder even = new StringBuilder(); StringBuilder odd = new StringBuilder();

int t= scanner.nextInt();
scanner.nextLine();
for(int i=0; i<t;i++){
    String testCase = scanner.nextLine();

    for(int j=0;j<testCase.length();j++){
        if(j%2==0){
            even.append(testCase.charAt(j));
        }else{
            odd.append(testCase.charAt(j));
        }
    }
    System.out.println(even.toString().trim() + " " + odd.toString().trim());
    even.setLength(0);
    odd.setLength(0);

}

scanner.close();

solution in python 3:

n = int(input())
for _ in range(n):
    a= ""
    b= ""
    S = str(input())
    for i in range(len(S)):
        if i%2 == 0:
            a += S[i]
        elif i%2 !=0:
            b+= S[i]
    print(a+" "+b)

C# solution

using System; using System.Collections.Generic; using System.IO; class Solution { static void Main(String[] args) {

    int n = Convert.ToInt32(Console.ReadLine());  // Read number of test cases (but it's unused)

    // Convert string to character array

   for(int i=0; i<n;i++){
     string characters = Console.ReadLine(); 
    string result=checkChar.checkindex(characters);
    Console.WriteLine(result);
   }
      // Print result
}
class checkChar{

    public static string checkindex(string characters){
        // Read input string

string even = ""; // Initialize with empty string string odd = "";

    char[] chars = characters.ToCharArray(); 
         for (int i = 0; i < characters.Length; i++) {  // Fix loop (start from 0, use <)
        if (i % 2 == 0) {  // Check if index is even
            even += chars[i]; 
        } else {
            odd += chars[i];
        }
    }
    return even + " "+ odd;

    }
}

}

n = str(input("What is your name")) a = "" b = "" for x in range(len(n)): if x%2 == 0: a+=n[x] elif x%2 != 0: b+=n[x] print(a+""+b)

This is my code. it gives right output in pycharm but why cant i pass the test cases?/ anyoone please help

**SUCCESSFULLY COMPLETED THIS PROGRAM ** PLEASE LET ME KNOW, TO OPTIMIZE THIS!!

// import java.io.; import java.util.;

public class Solution {

public static void Testcase(String s)
{
    char[] ch = s.toCharArray();
    char[] ab = new char[5000];
     char[] bc = new char[5000];

    int g=0;
    int h=0;

    for(int i=0;i<s.length();i++)
    {
        if(i%2==0)
        {
            ab[g++]=ch[i];
        }
        else
        {
            bc[h++]=ch[i];
        }
    }
    System.out.println(new String(ab,0,g)+" "+new String(bc,0,h));

}

public static void main(String[] args) {
    /* Enter your code here. Read input from STDIN. Print output to STDOUT. Your class should be named Solution. */
    Scanner sc = new Scanner(System.in);

    int a = sc.nextInt();
    String s;

    for(int j=1;j<=a;j++)
    {
        s = sc.next();
        Testcase(s);
    }

}

}