## Solution to Abs-Distinct by codility

29 Jan

Question: https://codility.com/demo/take-sample-test/abs_distinct Question Name: AbsDistinct In the original requirement, expected worst-case space complexity is O(N). But actually, O(1) is enought.

## Solution to Binary-Gap by codility

29 Jan

Question: https://codility.com/demo/take-sample-test/binary_gap Question Name: BinaryGap

## Solution to alpha2010 (Prefix-Set) by codility

29 Jan

Question: https://codility.com/demo/take-sample-test/prefix_set Question Name: alpha2010 or PrefixSet At the first glance, I think the set of Python is the best choice. Actually, the set solution passed all the test, and got 100/100 grade.

BUT, acording to the time complexity … Read More »

## Solution to Count-Semiprimes by codility

28 Jan

Question: https://codility.com/demo/take-sample-test/count_semiprimes Question Name: CountSemiprimes

## Solution to Count-Non-Divisible by codility

28 Jan

Question: https://codility.com/demo/take-sample-test/count_non_divisible Question Name: CountNonDivisible

## Solution to boron2013 (Flags) by codility

27 Jan

Question: https://codility.com/demo/take-sample-test/flags Question Name: boron2013 or Flags The official solution is here. UPDATE 2014-10-02: thanks to Piotrek Martynowicz, a bug is found and fixed.

## Solution to Peaks by codility

26 Jan

Question: http://codility.com/demo/take-sample-test/peaks Question Name: Peaks UPDATE on July 18th 2015: Many thanks to @Antonio Correia (https://34.145.67.234/2014/solution-to-peaks-by-codility/#comment-11725) !!! @Antonio Correia found a huge bug in my solution, even though it passed the codility.com. The bug has been fixed.

## Solution to Min-Perimeter-Rectangle by codility

26 Jan

Question: http://codility.com/demo/take-sample-test/min_perimeter_rectangle Question Name: MinPerimeterRectangle Let the length of one side be len_1, and the length of one adjacent side be len_2. For a rectangle with a constant area, the perimeter is minimized when the difference between len_1 and len_2, … Read More »

## Solution to Max-Slice-Sum by codility

26 Jan

Question: http://codility.com/demo/take-sample-test/max_slice_sum Question Name: MaxSliceSum The classic maximum subarray problem. It should be the very first question in this lesson.

## Solution to Max-Profit by codility

25 Jan

Question: http://codility.com/demo/take-sample-test/max_profit Question Name: MaxProfit For this question, we have to travel from the last element to the first one.