How to resolve the algorithm Abbreviations, simple step by step in the Ruby programming language
How to resolve the algorithm Abbreviations, simple step by step in the Ruby programming language
Table of Contents
Problem Statement
The use of abbreviations (also sometimes called synonyms, nicknames, AKAs, or aliases) can be an easy way to add flexibility when specifying or using commands, sub─commands, options, etc.
For this task, the following command table will be used:
Notes concerning the above command table:
For a user string of: the computer program should return the string:
Let's start with the solution:
Step by Step solution about How to resolve the algorithm Abbreviations, simple step by step in the Ruby programming language
The provided Ruby code is a program that takes a string containing a list of commands and their corresponding word sizes, and then parses a test string to identify the commands and their word sizes. Here's a breakdown of the code:
-
String Preprocessing:
- The input string
str
contains a list of commands and their word sizes. - The string is converted to uppercase using
str.upcase
. - The
gsub!
method is used to modify the string by replacing each occurrence of a command and word size pair with the command, a space, the word size, and another space. This is done twice to ensure that all commands have word sizes.
- The input string
-
Hash Creation:
- The modified string
str
is split into an array of key-value pairs. - The
transform_values(&:to_i)
method is used to convert the word size values to integers. - The key-value pairs are used to create a hash
table
that maps commands to their word sizes.
- The modified string
-
Test String Parsing:
- A test string
test
is defined. - The test string is split into an array of words
ar
.
- A test string
-
Command Identification:
- The
map
method is used to iterate through the words in the test stringar
. - For each word
w
, it searches thetable
hash for a matching command that starts withw
and has a word size greater than or equal to the length ofw
. - If a matching command is found, it is stored in
res[0]
. - If no matching command is found, an "error" string is used instead.
- The
-
Output:
- The modified array
ar
is joined into a single string, with the commands and their word sizes separated by spaces. - The resulting string is printed using
puts
.
- The modified array
In summary, this code parses a test string to identify the commands and their word sizes based on a provided list of commands and word sizes. It demonstrates string manipulation, hash usage, and array iteration in Ruby.
Source code in the ruby programming language
str = "add 1 alter 3 backup 2 bottom 1 Cappend 2 change 1 Schange Cinsert 2 Clast 3
compress 4 copy 2 count 3 Coverlay 3 cursor 3 delete 3 Cdelete 2 down 1 duplicate
3 xEdit 1 expand 3 extract 3 find 1 Nfind 2 Nfindup 6 NfUP 3 Cfind 2 findUP 3 fUP 2
forward 2 get help 1 hexType 4 input 1 powerInput 3 join 1 split 2 spltJOIN load
locate 1 Clocate 2 lowerCase 3 upperCase 3 Lprefix 2 macro merge 2 modify 3 move 2
msg next 1 overlay 1 parse preserve 4 purge 3 put putD query 1 quit read recover 3
refresh renum 3 repeat 3 replace 1 Creplace 2 reset 3 restore 4 rgtLEFT right 2 left
2 save set shift 2 si sort sos stack 3 status 4 top transfer 3 type 1 up 1"
RE = /(?<word1>[a-zA-Z]+)\s+(?<word2>[a-zA-Z]+)/
str = str.upcase
# add missing wordsizes
2.times{ str.gsub!(RE){ [ $~[:word1], $~[:word1].size, $~[:word2] ].join(" ")} }
table = Hash[*str.split].transform_values(&:to_i)
test = "riG rePEAT copies put mo rest types fup. 6 poweRin"
ar = test.split.map do |w|
(res = table.detect{|k,v| k.start_with?(w.upcase) && w.size >= v}) ? res[0] : "*error*"
end
puts ar.join(" ")
You may also check:How to resolve the algorithm Roots of a function step by step in the Liberty BASIC programming language
You may also check:How to resolve the algorithm Increasing gaps between consecutive Niven numbers step by step in the Phix programming language
You may also check:How to resolve the algorithm Abundant odd numbers step by step in the Swift programming language
You may also check:How to resolve the algorithm Stable marriage problem step by step in the BBC BASIC programming language
You may also check:How to resolve the algorithm Conditional structures step by step in the Vorpal programming language