N/A Interview Question for Front-end Software Engineers


Country: India
Interview Type: Written Test




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/* 
     gitlab.com/non.est.sacra/zoomba :: ZoomBA lang
     Imagine tweet is something like this :   
 */

def Tweet : {  body : "my body" , retweet_count : 0  }  

h = heap( x , where{ $.o.0.retweet_count <  $.o.1.retweet_count  } ) // create a heap 

lfold(tweets) as { h += $.o }
 
println( h ) // h has the tweets

- NoOne September 20, 2016 | Flag Reply
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Modify quick-select to accomplish this in average O(N) time.

Quickselect the K'th largest element in the array - call it e.

Quickselect will partition the array such that all values greater than e will be on one side, and all values smaller will be on the other. Simply return all elements larger than or equal to e.

- Anon1 September 21, 2016 | Flag Reply
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we can use quickselect which will partition the array at the k'th smallest (or largest) element we specify. Then simply take the partition containing values larger.

- blargz September 21, 2016 | Flag Reply
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If tweets are in the form of array of objects 1. Sort it comparing the retweet count - It takes O(n) 2. Get first 'X' items from the sorted array - O(X) Example : {{{ Var descTweets = tweets.sort(function(tweet_a, tweet_b) { return tweet_a.retweet_count < tweet_b.retweet_count; }); // Var descTweets will have the tweets as per retweet count (Desc) - KrishCdbry December 13, 2016 | Flag Reply


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