Is it bad style to use a comment above a function to document who calls a function? As an example: # Called by foo def bar(something): return something+1 It strikes me as bad practice, but I would like to check myself before going around telling others not to do it.

Task Find the set of numbers such that the binary representation contains two or more runs of 1 separated by at least one 0. For example, the for the numbers that are 4 bits long: 0 0000 (no ones) 1 0001 (only one run) 2 0010 (only one run) 3 0011 (only one run)...

Java, 214 bytes Golfed: import java.util.*;class A{public static void main(String[]a){List b=new ArrayList();for(long i=5;i<Math.pow(2,Long.parseLong(a[0]));++i){if(Long.toString(i,2).matches(".*10+1.*")){b.add(i);}}System.out.print(b);}} Ungolfed: import java.util.*; class A { public stat...

C++11, 197 bytes Note: this was written and tested using MSVC++ 2013. Golfed: #include<iostream> #include<regex> int main(int a,char**b){char c[33];for(long i=5;i<1<<atol(b[1]);++i){_ltoa(i,c,2);if(std::regex_search(c,std::regex(".*01"))){std::cout<<i<<std::endl;}}return 0;} Ungolfed: #include

Energy levels of electrons Electrons are ordered into "shells". However, sometimes electrons get excited, for example by heat, and leave their shell to go to another! These electrons will go back at some point, but they cannot go back to their original shell without emitting energy in the form o...

Pyth, 5 bytes /^2Q4 I integer-divide by 4 instead of subtracting two from the power and flooring.