/Ruby/Square every digit of a number ruby

Square every digit of a number ruby

If we run 9119 through the function, 811181 will come out, because 92 is 81 and 12 is 1.

function squareDigits(num){
    return Number(('' + num).split('').map(function (val) { return val * val;}).join(''));
}

Source: stackoverflow.com

Square every digit of a number ruby

number = 12345
number.to_s.chars.map { |num| num.to_i ** 2 }.join.to_i
# convert number to string (.to_s), convert string to array (.chars)
# .map each array element to the result of a block call. 
# .join array into string & convert back to integer.

Similar codes

0 vote225 views1 answer
How to run one line pry
Ruby
1 vote271 views2 answers
Create a new hash from existing hash ruby
Ruby
0 vote226 views1 answer
Update a database in ruby
Ruby
0 vote239 views1 answer
Irb loaderror
Ruby
0 vote197 views0 answer
Ruby
4 votes231 views1 answer
Ruby read file
Ruby
2 votes246 views2 answers
Rails image tag data attribute
Ruby
0 vote246 views1 answer
How to install webpck on ubuntu globally
Ruby
1 vote247 views2 answers
Rails check_box_tag
Ruby
0 vote245 views1 answer
Check type in ruby
Ruby