Introduction - If you have any usage issues, please Google them yourself
① a lookup table, using the sequential search algorithm to find its elements, and compare the output lookup elements and the final number of comparisons. If not found, put the element into the lookup table. ② to establish an orderly lookup table, using the binary search algorithm to find its elements, and when you compare the output to find the elements and the final number of comparisons if not found, put the element into the lookup table.