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Java help

Started by jaj2 , Jan 27 2006 11:32 AM

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#1
jaj2

Posted 27 January 2006 - 11:32 AM

New Member

Member
5 posts

Write a function that prints (not returns!) the sum of all the numbers from 1 to 1000 that contain both the digit 1 and the digit 3. For example, your sum will include the numbers 351, 13, and 15983, but not 300, 11, or 927.

#2
bdlt

Posted 27 January 2006 - 01:36 PM

Member

Member
876 posts

welcome back jaj2,

let's see if you can modify the code from your previous topic using indexOf() again.

from the last topic, s.indexOf( '7' ) returns -1 if '7' is not found
and s.indexOf( '7' ) returns a number greater than or equal to zero if
'7' is found.

hint: the line below needs to be modified to find '1' and '3'
if( s.indexOf( '7' ) == -1 )

also verify 'i <= 1000' is in your code(as below)
for( int i = 1;i <= 1000;i++ ) {

bdlt