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  1. Practice
  2. Data Structures
  3. Arrays
  4. Arrays - DS
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Arrays - DS

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votes

  • dizmartin_gonza1 + 0 comments

    My c++ solution:

    vector<int> reverseArray(vector<int> a) {
        int aux = 0;
        int n = a.size();
        for (int i = 0; i < n/2; ++i) {
                aux = a[n-i-1];
                a[n-i-1] = a[i];
                a[i] = aux;
        }
        return a;
}

  • DevFactorYT + 0 comments

    Hello Fellow HackerRanker's,

    I created a video-tutorial walking through this problem and intend to walk through the rest of the problems (I am finished with most of DS on my main account).

    Check out the walkthrough here: https://www.youtube.com/watch?v=hKQphShaM6g

    Best Regards,

    DevFactor

  • macdhollister + 0 comments

    I'm getting a bug when trying to solve this with JavaScript. I didn't change any of the main method code, so everything from the error is pre-written.

    solution.js:41
    ws.write(res.join(' ') + '\n');
                 ^

TypeError: Cannot read property 'join' of undefined
    at main (solution.js:41:18)
    at ReadStream.<anonymous> (solution.js:20:5)
    at emitNone (events.js:111:20)
    at ReadStream.emit (events.js:208:7)
    at endReadableNT (_stream_readable.js:1064:12)
    at _combinedTickCallback (internal/process/next_tick.js:138:11)
    at process._tickCallback (internal/process/next_tick.js:180:9)

  • satishbabuoffice + 0 comments

    Single line code in JavaScript

    console.log(arr.reverse().join(' '));

  • rajarshi356 + 0 comments

    Its very easy passed all the test cases

    import java.io.*;
import java.util.*;

public class Solution {

    public static void main(String[] args) {
        /* Enter your code here. Read input from STDIN. Print output to STDOUT. Your class should be named Solution. */
        int n,i,b,j;
        Scanner sc=new Scanner(System.in);
        n=sc.nextInt();
        int[] a=new int[n];
        for(i=0;i<n;i++){
            a[i]=sc.nextInt();
        }
        for(j=a.length-1;j>=0;j--){
            System.out.print(a[j]+" ");
        }
    }
}
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