如何将一组数字随机分配给R中的矩阵，没有所有相同元素的行

I want to make a random matrix with n rows and m columns. I want the elements of each row of the matrix to be randomly chosen from a set of numbers. I want to have at least one different number in each row. I don't want all the elements of a row to be the same. I once asked my question I want to make a random matrix with n rows and