Computer Science

The digits 0, 1, and 8 look much the same if rotated 180 degrees on the page (turned upside down). Also, the digit 6 looks much like a 9, and vice versa, when rotated 180 degrees on the page. A multi-digit number may also look like itself when rotated on the page; for example 9966 and 10801 do, but 999 and 1234 do not. You are to write a program to count how many numbers from a given interval look like themselves when rotated 180 degrees on the page. For example, in the interval [1..100] there are six : 1, 8, 11, 69, 88, and 96. Your program should take as input two integers, m and n, which define the interval to be checked, 1 ≤ m ≤ n ≤ 32000. The output from your program is the number of rotatable numbers in the interval. You may assume that all input is valid. Input/output is not from/to files for this question. Keyboard input and screen output is expected. Sample Session User input is in italics. Enter the lower bound of the interval: 1 Enter the upper bound of the interval: 100 The number of rotatable numbers is: 6 I am kind of stuck withe logic... help me please. No one has answered this question yet.

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Answered by Curtis Carter

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