# Coding Challenge Day-32: Problem 2: Zigzag Conversion

Hello! So I’m doing a 30 day coding challenge where I solve a few questions every day and thought of posting them here on my blog so that you guys can join the challenge too!

Welcome to Coding challenge Day 32: Problem 2! Be sure to post your answers, queries etc in the comments!

Problem: ZigZag Conversion: You are given a string (str) and the number of rows (n). You need to convert it to a string in a zigzag pattern as follows:

Sample: “TechnArtBlog” ; rows=3

T n B
e h A t l g
c r o

Output: TnBehAtlgcro

Solutions:

I referred to this (LINK) while solving this one.

``````package string;

import java.util.Arrays;

public class zigzag {

public static void zz (String str, int n){
char[] str1= str.toCharArray();
int len= str.length();
String [] arr= new String [n];
Arrays.fill(arr, "");
boolean down = true;
int row=0;

for(int i=0; i<len; i++){
arr[row] += str1[i];
if(row==n-1){
down= false;
} else if (row==0){
down=true;
}

if(down){
row++;
} else {
row--;
}
}

for(int i=0; i<n; i++){
System.out.print(arr[i]);
}

}

public static void main (String [] args){
String s="TechnArtBlog";
zz(s, 3);
}

}
``````

Happy Learning!!

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