Write a java program that asks the user for the number of columns in a square matrix $(2-$d

array with the same number of rows and columns$).$ Randomly fill the matrix with int

values between $1$ and $950.$ Write methods to calculate the following:

$$ The average of all values in the matrix

$$ The sum of all values in the matrix

$$ The largest value in the matrix

$$ The smallest value in the matrix

$$ The value that occurs the most frequently in the matrix $($mode$)$

$$ Display the matrix and the results of all methods