264 - Count on Cantor

UVa網站題目連結
My Solved Problems Performance

One of the famous proofs of modern mathematics is Georg Cantor's demonstration that the set of rational numbers is enumerable. The proof works by using an explicit enumeration of rational numbers as shown in the diagram below.

displaymath27

In the above diagram, the first term is 1/1, the second term is 1/2, the third term is 2/1, the fourth term is 3/1, the fifth term is 2/2, and so on.

Input and Output

You are to write a program that will read a list of numbers in the range from 1 to tex2html_wrap_inline29 and will print for each number the corresponding term in Cantor's enumeration as given below. No blank line should appear after the last number.

The input list contains a single number per line and will be terminated by end-of-file.

Sample input

3
14
7

Sample output

TERM 3 IS 2/1
TERM 14 IS 2/4
TERM 7 IS 1/4

Solution

  1. import java.io.BufferedInputStream;
  2. import java.util.Scanner;

  3. public class Main {

  4. public static void main(String args[]) {

  5. int n, loopCounter, sum;
  6. Scanner in = new Scanner(new BufferedInputStream(System.in));

  7. while (in.hasNext()) {

  8. n = in.nextInt();
  9. for (loopCounter=1, sum = 0;(sum+=loopCounter)<n;loopCounter++) {}
  10. if ((loopCounter&1)==1)
  11. System.out.println("TERM " + n + " IS " +(1+(sum-n))+"/" + (
  12. loopCounter-(sum-n)));
  13. else
  14. System.out.println("TERM " + n + " IS " + (loopCounter-(sum-n))+
  15. "/" +(1+(sum-n)));
  16. }
  17. }
  18. }
關鍵字:UVa Online Judge, ACM. Java

留言

這個網誌中的熱門文章

【白沙屯媽祖徒步進香】2024及歷年時程+路線+停留點!

【博客來折價券】博客來免費序號e-coupon分享(持續更新)

【銀行代碼查詢】3碼銀行代碼列表、7碼分行代碼查詢

【博客來折價券】25/50/100/150現領現折+天天簽到換200+OP兩倍換!

【Hami Video】免費Hami Video體驗/試用序號分享(隨時更新)!

【台北中壢】國道客運/公車路線(1818,2022,9001,9025)!