📄 problem - 1303.mht
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Subject: Problem - 1303
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<H1 style=3D"COLOR: #1a5cc8">Doubles</H1><FONT size=3D+0><B><SPAN=20
style=3D"FONT-WEIGHT: bold; FONT-SIZE: 12px; COLOR: green; =
FONT-FAMILY: Arial">Time=20
Limit: 2000/1000 MS (Java/Others) Memory =
Limit:=20
65536/32768 K (Java/Others)<BR>Total Submission(s):=20
591 Accepted Submission(s):=20
445<BR></SPAN></B></FONT><BR><BR>
<DIV class=3Dpanel_title align=3Dleft>Problem Description</DIV>
<DIV class=3Dpanel_content>As part of an arithmetic competency =
program, your=20
students will be given randomly generated lists of from 2 to 15 =
unique=20
positive integers and asked to determine how many items in each =
list are=20
twice some other item in the same list. You will need a program to =
help=20
you with the grading. This program should be able to scan the =
lists and=20
output the correct answer for each one. For example, given the =
list <BR>1=20
4 3 2 9 7 18 22<BR><BR>your program should answer 3, as 2 is twice =
1, 4 is=20
twice 2, and 18 is twice 9. <BR></DIV>
<DIV class=3Dpanel_bottom> </DIV><BR>
<DIV class=3Dpanel_title align=3Dleft>Input</DIV>
<DIV class=3Dpanel_content>The input file will consist of one or =
more lists=20
of numbers. There will be one list of numbers per line. Each list =
will=20
contain from 2 to 15 unique positive integers. No integer will be =
larger=20
than 99. Each line will be terminated with the integer 0, which is =
not=20
considered part of the list. A line with the single number -1 will =
mark=20
the end of the file. The example input below shows 3 separate =
lists. Some=20
lists may not contain any doubles.<BR></DIV>
<DIV class=3Dpanel_bottom> </DIV><BR>
<DIV class=3Dpanel_title align=3Dleft>Output</DIV>
<DIV class=3Dpanel_content>The output will consist of one line per =
input=20
list, containing a count of the items that are double some other=20
item.<BR></DIV>
<DIV class=3Dpanel_bottom> </DIV><BR>
<DIV class=3Dpanel_title align=3Dleft>Sample Input</DIV>
<DIV class=3Dpanel_content><PRE>1 4 3 2 9 7 18 22 0
2 4 8 10 0
7 5 11 13 1 3 0
-1 </PRE></DIV>
<DIV class=3Dpanel_bottom> </DIV><BR>
<DIV class=3Dpanel_title align=3Dleft>Sample Output</DIV>
<DIV class=3Dpanel_content><PRE>3
2
0</PRE></DIV>
<DIV class=3Dpanel_bottom> </DIV><BR>
<DIV class=3Dpanel_title align=3Dleft>Source</DIV>
<DIV class=3Dpanel_content>Mid-Central USA 2003</DIV>
<DIV class=3Dpanel_bottom> </DIV><BR>
<DIV class=3Dpanel_title align=3Dleft>Recommend</DIV>
<DIV class=3Dpanel_content>Eddy</DIV>
<DIV class=3Dpanel_bottom> </DIV><BR>
<CENTER=20
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href=3D"http://acm.hdu.edu.cn/statistic.php?pid=3D1303">Statistic</A>&nbs=
p;| <A=20
=
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