What does VBA code mean? There is a piece of code that tests and defines integer data types and calculates running time, but there is a J variable in the middle.
J is just a variable used for loops, so as to increase the number of loops. The outer loop (i) is once and the inner loop (j) is 5000 times, so the total number of loops is 5000 * 5000 = 25000000 times. Because the maximum value of integer data type is 32767, it can't meet the requirement of looping variables so many times, so this method is used instead. Of course, if the loop variable is defined as Long, only one loop can be used.