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  1. Prepare
  2. Data Structures
  3. Arrays
  4. Arrays - DS
  5. Discussions

Arrays - DS

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  • dizmartin_gonza1
     + 21 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
     + 7 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

  • jane_saldanha
     + 2 comments
    def reverseArray(a):
    return a[::-1]

    Python 3

  • sndpflashtv
     + 3 comments

    My C Solution: 

    int* reverseArray(int a_count, int* a, int* result_count) {
   *result_count = a_count;
    int temp;
    int end = a_count-1;
    for(int i = 0; i < a_count/2; i++){
        temp = *(a+end);
        *(a+end) = *(a+i);
        *(a+i) = temp;

        end--;
    }

    return a;

    }

  • macdhollister
     + 8 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)
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