matlab - 如何矢量化这个 for loop matlab

Question

divisible = 0;
low = input('Start Value: ');
high = input('End Value: ');
divisor = input('Divisor: ');
mask = mod([low:high],divisor);

  for index = low:high
     if mask(index) == 0
        divisible = divisible + 1;
     end
  end

思路是统计没有余数的次数。

Answer 1

这是一个单行解决方案:

%#Set the inputs
LB = 3;
UB = 28;
Divisor = 3;

%#A one-line solution
Count = sum(mod((LB:UB)', Divisor) == 0);