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Problem Challenge 3 (medium)
Problem Statement
You are given a 2D matrix containing different characters, you need to find if there exists any cycle consisting of the same character in the matrix.
A cycle is a path in the matrix that starts and ends at the same cell and has four or more cells. From a given cell, you can move to one of the cells adjacent to it - in one of the four directions (up, down, left, or right), if it has the same character value of the current cell.
Write a function to find if the matrix has a cycle.
Example 1
Input: matrix =
Output: true
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