进制转换--数字转26字母进制-matlab

function [col] = num2xlsCol(num)

k = floor(log(num)/log(26));

col = [];

for i=k:-1:0

    tmp = 26^i;

    coef = floor(num/tmp);

    letter = char('A'+coef-1);

    col = strcat(col,letter);

    num = num - coef*tmp;

end

return;