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Grokking the Coding Interview Patterns in C++

Matchsticks to Square

Explore how to use backtracking to determine whether a set of matchsticks can form a square without breaking or reusing sticks. This lesson helps you understand the problem constraints, apply combinatorial problem-solving techniques, and practice implementing an efficient solution in C++.

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Statement

Given an integer array, matchsticks, where matchsticks[i] is the length of the ithith matchstick. Use every single matchstick to create a square. No stick should be broken, although they can be connected, and each matchstick can only be used once.

Return TRUE if we can make this square; otherwise, return FALSE.

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