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Outputs time limit exceeded. I am trying to reverse a string without using string functions.Help me out.

import java.util.*; public class Program { public static void main(String[] args) { Scanner in= new Scanner(System.in); System.out.println("Enter the string"); char s[]=in.next().toCharArray(); char ch; int l=0,i; boolean isNo= (s[l]!=0); for(l=0;isNo=true; l++); for(i=0;i<l/2;i++){ ch=s[i]; s[i]=s[l-i-1]; s[l-i-1]=ch; } System.out.print(s); }}

12th Jul 2018, 5:28 AM
Hrithik Muskan
Hrithik Muskan - avatar
8 Respuestas
+ 2
Hrithik Muskan I have updated the code to calculate the string length without using 'length' attribute. It uses a for each loop to count the char array elements. Hth, cmiiw
12th Jul 2018, 1:05 PM
Ipang
+ 3
I guess the culprit was this "for(l=0;isNo=true;l++);" here you used assignment operator rather than checking for equality, if you want to use this approach you should rather check s[l]!=0 in each iteration. It is easier to use s.length I think : ) (Edit) Code updated import java.util.*; public class Program { public static void main(String[] args) { Scanner in= new Scanner(System.in); System.out.println("Enter the string:"); char s[]=in.nextLine().toCharArray(); char ch; int i, l = 0; for(char c : s) l++; // count char array length for(i = 0; i < l / 2; i++) { ch = s[i]; s[i] = s[l-i-1]; s[l-i-1] = ch; } System.out.print(s); } } Hth, cmiiw
12th Jul 2018, 6:48 AM
Ipang
+ 3
Hrithik Muskan It means "for each (character c) in (char array s) increment the value of 'l' variable". I found out that the char array doesn't use null terminator as it is in C/C++, and I guess that was a workaround : ) P.S. Please don't call me Sir, I am a student of SoloLearn, just like you : ) Hth, cmiiw
12th Jul 2018, 1:16 PM
Ipang
+ 3
Hrithik Muskan You're very welcome, I am glad if it helps : )
12th Jul 2018, 1:32 PM
Ipang
+ 2
It happens sometimes, you just have to keep trying. it'll definitely work
12th Jul 2018, 6:27 AM
Dlite
Dlite - avatar
+ 1
Ipang Sir,I was supposed to do this without using string functions, I mentioned it in the question there.
12th Jul 2018, 12:10 PM
Hrithik Muskan
Hrithik Muskan - avatar
+ 1
Ipang Sir, help me with the for loop condition (char c:s), what does it mean?
12th Jul 2018, 1:10 PM
Hrithik Muskan
Hrithik Muskan - avatar
+ 1
Ipang Sir,thanks a lot for helping me with my concepts. And please don't mind calling you Sir, at least you are teaching me smthng and helping me out😁
12th Jul 2018, 1:19 PM
Hrithik Muskan
Hrithik Muskan - avatar