Your browser (Unknown 0) is no longer supported. Some parts of the website may not work correctly. Please update your browser.
AVAILABLE EXERCISES:
Exercise 9
Bitwise operations (bit-ops)
Exercise 8
Frontend
Exercise 7
Data Structures
Exercise 6
SQL
Exercise 5
Coding skills
Exercise 4
Algorithmic skills
Exercise 3
2017 Contest
Exercise 2
2016 Contest
Exercise 1
2015 Contest
Exercise 4

Algorithmic skills

Tasks:

easy

FirstUnique

VIEW START
Find the first unique number in a given sequence.
easy

StrSymmetryPoint

VIEW START
Find a symmetry point of a string, if any.
easy

TreeHeight

VIEW START
Compute the height of a binary tree.
medium

ArrayInversionCount

VIEW START
Compute number of inversion in an array.
hard

DisappearingPairs

VIEW START
Reduce a string containing instances of the letters "A", "B" and "C" via the following rule: remove one occurrence of "AA", "BB" or "CC".
hard

PolygonConcavityIndex

VIEW START
Check whether a given polygon in a 2D plane is convex; if not, return the index of a vertex that doesn't belong to the convex hull.