CSES Solutions - Gray Code
A Gray code is a list of all 2n bit strings of length n, where any two successive strings differ in exactly one bit (i.e., their Hamming distance is one).The task is to create a Gray code for a given length n. Examples:Input: n=2Output: ["00", "01", "11", "10"]Input: n=1Output: ["0", "1"]Input: n=3O