How to Display Directories Only Under Linux Shells?
We know that the ls command under Linux displays the list of files and directories under the current directory. If you want to display the directories by excluding the …
How to Define Lambda Functions in C++11?
C++11 (formerly named C++0x) has some great new features to improve the code efficiency such as the use of auto which is the same as the var in C#, …
C/C++ Coding Exercise – Ransom Note (unordered_map or array)
Two strings are both lowercase letters. Write a function to determine if one string can be constructed using the letters from the other string. For example: canConstruct("aa", "ab") = …
How to Prolong Battery Use when Playing Pokemon?
Recently, the game Pokemon becomes so popular that many people are walking down the streets catching the pokemon. As you walk and hold the smart phones, the screen display …
R Tutorial – Using R to Fit Linear Model – Predit Weight over Height
In this post, we have shown you the C# code to process raw data of 10K rows of gender, height and corresponding weight. It takes a while to code …
Derangement Permutation Implementation using R Programming
August 13, 2016
algorithms, Dynamic Programming, dynamic programming, R programming, Recursion, recursive
No Comments
Given N natural integers (from 1 to N), the number of all permutations is N! (Factorial). That is explained by the fact: There are N choices when selecting the …