Linked Questions
108 questions linked to/from Tips for golfing in C
43
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Catalan Numbers
The Catalan numbers (OEIS) are a sequence of natural numbers often appearing in combinatorics.
The nth Catalan number is the number of Dyck words (balanced strings of parenthesis or brackets such as <...
- 11.2k
63
votes
30
answers
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Tips for golfing in C++
What general tips do you have for golfing in C++?
I'm looking for ideas that can be applied to code golf problems in general that are at least somewhat specific to C++ (e.g. "remove comments" is not ...
- 12.7k
29
votes
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answers
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Determine if Strings are equal [closed]
Your task is simple. Determine if one string equals the other (not address, the value) without the use of equality operators (such as ==, ...
- 423
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votes
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answers
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The Snail in the Well
Background
There's a common riddle that goes something like this:
A snail is at the bottom of a 30 foot well. Every day the snail is able to climb up 3 feet. At night when they sleep, they slide ...
- 4,772
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votes
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Ot wes thi bist uf tomis
I just love this simple cypher, it's so fun reading not-quite human-readable words and filling the gaps...
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- 11.8k
38
votes
33
answers
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Draw the flag of Bangladesh
The flag of Bangladesh is very simple. It looks like below:
The flag will be in bottle green (#006a4e) and rectangular in size in the proportion of length to width of 10:6, with a red circle in near ...
- 12.3k
44
votes
47
answers
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Is it a balanced number?
A number is balanced if the sum of the digits on each half of the number is equal, so: 1423 is balanced because 1+4 = 2+3, so is:...
- 46.3k
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votes
55
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Convert C header names to C++ header names
In the C standard library, header names end with a .h suffix:
stdio.h
In C++, those header names are available in an ...
- 2,709
27
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55
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Approximation of e
We all know that the Euler's number, denoted by \$e\$, to the power of some variable \$x\$, can be approximated by using the Maclaurin Series expansion:
$$e^x=\sum_{k=0}^{\infty}{\frac{x^k}{k!}}=1+x+\...
- 913
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votes
83
answers
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Calculator that adds char values
Task
Build a calculator, that takes any string, from a file, stdin or whatever, and adds up all the values of the chars.
Example
Input
Hello World!
Output
1085
...
- 1,361
40
votes
38
answers
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104
votes
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answers
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Seven Slash Display
Write a program that takes in a non-empty string of the digits 0 through 9 and prints how they would be shown on a seven-segment display using slashes (/, ...
- 89.7k
31
votes
35
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Help, I've mixed my week up!
My dog ate my calendar, and now my days are all mixed up. I tried putting it back together, but I keep mixing up the days of the week! I need some help putting my calendar back together, with the days ...
- 6,887
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votes
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Does the nth char equal the nth from last char?
Inspired by Does the start equal the end
Given a string s and an integer n, output a truthy/falsey as to whether the ...
- 13.8k
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votes
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Find the number of integers in the range from 1 to N that ends with 2
Task
As input you have:
a positive integer N
And you should output:
The number of integers in \$[1,N]\$ (an inclusive range) which end with the digit \$2\$ in ...
