Day 6: Let's Review
Problem
Given a string, SS, of length NN that is indexed from 00 to N−1N−1, print its even-indexed and odd-indexed characters as 22 space-separated strings on a single line (see the Sample below for more detail).
Note: 00 is considered to be an even index.
Input Format
The first line contains an integer, TT (the number of test cases).
Each line ii of the TT subsequent lines contain a String, SS.
Constraints
1≤T≤101≤T≤10
2≤length of S≤100002≤length of S≤10000
Output Format
For each String SjSj (where 0≤j≤T−10≤j≤T−1), print SjSj‘s even-indexed characters, followed by a space, followed by SjSj‘s odd-indexed characters.
Sample Input
2
Hacker
Rank
Sample Output
Hce akr
Rn ak
Explanation
Test Case 0: S=“Hacker”
S[0]=“H”
S[1]=“a”
S[2]=“c”
S[3]=“k”
S[4]=“e”
S[5]=“r”
The even indices are 0, 2, and 4, and the odd indices are 1, 3, and 5. We then print a single line of 2 space-separated strings; the first string contains the ordered characters from S‘s even indices (Hce), and the second string contains the ordered characters from S‘s odd indices (akr).
Test Case 1: S=“Rank”
S[0]=“R”
S[1]=“a”
S[2]=“n”
S[3]=“k”
The even indices are 0 and 2, and the odd indices are 1 and 3. We then print a single line of 2 space-separated strings; the first string contains the ordered characters from S‘s even indices (Rn), and the second string contains the ordered characters from S‘s odd indices (ak).
Recommended: Please try your approach on your integrated development environment (IDE) first, before moving on to the solution.
Few words from CodingHumans : Don't Just copy paste the solution, try to analyze the problem and solve it without looking by taking the the solution as a hint or a reference . Your understanding of the solution matters.
HAVE A GOOD DAY 😁
Solution:
( java )
import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;
public class Solution {
public static void main(String[] args)
{
Scanner in = new Scanner(System.in);
int N = in.nextInt();
in.nextLine();
for (int i = 0; i < N; i++)
{
String string = in.nextLine();
char[] charArray = string.toCharArray();
for (int j = 0; j < charArray.length; j++)
{
if (j % 2 == 0)
{
System.out.print(charArray[j]);
}
}
System.out.print(" ");
for (int j = 0; j < charArray.length; j++)
{
if (j % 2 != 0)
{
System.out.print(charArray[j]);
}
}
System.out.println();
}
in.close();
}
}
