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Grokking the Coding Interview Patterns

Self Crossing

Explore how to analyze a sequence of moves on an X-Y plane to detect if the path crosses itself. Learn to apply mathematical and geometric reasoning for coding interview problems, strengthening your ability to solve path intersection challenges efficiently.

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Statement

You are given an array of integers, distance, where each element represents the length of a move you will make on an X-Y plane. You start at the origin, which is point (0,0)(0, 0), and move according to the array. Specifically, you move distance[0] meters north, distance[1] meters west, distance[2] meters south, distance[3] meters east, and continue this pattern in a counterclockwise ...