How to Check if a Matrix is a Toeplitz Matrix?
Given a two-dimensional matrix of integers matrix, determine whether it’s a Toeplitz matrix. A Toeplitz is one where every diagonal descending from left to right has the same value. …
Tag: unordered map
How to Sort Characters By Frequency?
Given a string that contains characters of ASCII no more than 256, sort it in non-ascending order based on the frequency of the characters. For example, Input “tree” the …
