Find a symmetry point of a string, if any.

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AVAILABLE LESSONS:

Lesson 1

Iterations

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Arrays

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Time Complexity

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Counting Elements

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Prefix Sums

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Sorting

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Stacks and Queues

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Leader

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Maximum slice problem

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Prime and composite numbers

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Sieve of Eratosthenes

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Euclidean algorithm

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Fibonacci numbers

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Binary search algorithm

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Caterpillar method

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Greedy algorithms

Lesson 17

Dynamic programming

Lesson 99

Future training

Lesson 99

easy

Find a symmetry point of a string, if any.

easy

Compute the height of a binary tree.

medium

Compute number of inversion in an array.

hard

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.