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Code 4 Bill
This is the Code4Bill blog. If you're looking for the contest site, head on over to http://www.code4bill.com
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December 2005
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Code 4 Bill
Fibonacci system
Posted
over 9 years ago
by
sriram
3
Comments
We typically learn binary system, hex system in our courses. Most of them are predictable in their position values or they are linear. This system is not linear as its dependant on Fibonacci series. 3 is the first duplicate (ignoring 1 as we started...
Code 4 Bill
Two digit numbers
Posted
over 9 years ago
by
sriram
2
Comments
I always wondered how to place digits 0 to 9 in a matrix which contains all the digits from 00 to 99 and what is the minimum matrix size that is needed.In this question we are trying to enumerate the number of numbers we can produce. Lot of people are...
Code 4 Bill
Counting bits  continued
Posted
over 9 years ago
by
sriram
4
Comments
Lot of people sent code with counting bits method. Some people also sent the permutations sequence and expressions to say how many numbers exist before N that have same 1's in binary form. Counting 1's in a number is better than O(N) algorithm where...
Code 4 Bill
Number of 1s problem
Posted
over 9 years ago
by
sriram
2
Comments
Previously I asked a question regarding the distribution of how many swaps are needed to move array elements. Here we are trying to count the number of 1's. Counting number of 1's vs the distribution table (All numbers which have 2 1's and how many times...
Code 4 Bill
December 13th brain teaser
Posted
over 9 years ago
by
sriram
1
Comments
[ Go to http://www.microsoft.com/india/code4bill/SampleQuestion.aspx to see the question  Sriram] Trying to move to coding related questions from number sequences. The reason I chose 32 is to make sure recursion doesn’t terminate quickly. Not trying...
Code 4 Bill
The power of 2! (Dec 12th Brain teaser)
Posted
over 9 years ago
by
sriram
7
Comments
[ To see the question referred to in this blog post, check out www.code4bill.com (the Dec 12th brain teaser)  Sriram Krishnan] The previous two questions were easy to crack by writing simple code. So I thought we could use some machine power to actually...
Code 4 Bill
Oh My God!
Posted
over 9 years ago
by
sriram
6
Comments
I'm sure several people had had this experience. You spend a lazy Saturday at home whiling away your time and sleeping. Sunday morning, you come to work, open your email and you go 'Oh My God!' at something you see in your email and you curse yourself...
Code 4 Bill
37
Posted
over 9 years ago
by
sriram
3
Comments
As I stated in the morning the number 37 is key to getting results which contain the same digits 37 * 3 = 111 Then variations of this like 74 * 3, 37 * 6....... bring the results 111, 222,etc. Then starts the next series 37037 and the other...
Code 4 Bill
Question for the day
Posted
over 9 years ago
by
sriram
62
Comments
A * BCDEF = GGGGGG This is another question that's about working on the digits of a number. It all starts with 37 * 3 = 111.After that you will see lot of numbers which produce the same digit in the resulting number and are in some way related to the...
Code 4 Bill
Code4Bill begins!
Posted
over 9 years ago
by
sriram
87
Comments
Welcome to the Code4Bill blog! If you’ve found your way here, I’m sure you already know what Code4Bill is. If you don’t, here’s a quick refresher – Code4Bill is a contest aimed at finding the best student programmers in India. If you thought that you...
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