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DIY: Frog Jump

Explore how to solve the frog jump problem where a frog must cross a river by jumping on stones in sequence. Understand how to implement logic in Swift to check if the frog can reach the last stone by jumping k - 1, k, or k + 1 units forward.

Problem statement

A river is divided into units. At each unit, there may or may not be a stone. A frog has to cross the river. It can jump on a stone, but it must not jump into the water.

You are given a list of the positions of the stones in a sorted and ascending order. You have to determine if the ...