How to resolve the algorithm Loops/While step by step in the Ruby programming language

Published on 12 May 2024 09:40 PM

How to resolve the algorithm Loops/While step by step in the Ruby programming language

Table of Contents

Problem Statement

Start an integer value at   1024. Loop while it is greater than zero. Print the value (with a newline) and divide it by two each time through the loop.

Let's start with the solution:

Step by Step solution about How to resolve the algorithm Loops/While step by step in the Ruby programming language

The Ruby code snippet consists of three parts:

Part 1:

i = 1024
while i > 0 do
  puts i
  i /= 2
end
  • i is initialized to 1024.
  • It uses a while loop to continuously print i and then divide it by 2 until i becomes less than or equal to 0.
  • This loop will print the following output:
1024
512
256
128
64
32
16
8
4
2
1

Part 2:

puts i = 1024
puts i /= 2 while i > 0
  • i is reassigned to 1024.
  • puts i = 1024 prints 1024.
  • puts i /= 2 while i > 0 is a shorthand form of a loop.
    • It first assigns i to 1024 / 2, which is 512, and prints it.
    • Then, it checks if i is greater than 0, which it is.
    • It assigns i to i / 2, which is 256, and prints it.
    • This process continues until i becomes less than or equal to 0.
    • The output will be:
1024
512
256
128
64
32
16
8
4
2
1

Part 3:

i = 1024
until i <= 0 do
  puts i
  i /= 2
end
  • i is again initialized to 1024.
  • It uses an until loop to repeatedly print i and divide it by 2 until i becomes less than or equal to 0.
  • The until loop is similar to the while loop, but it executes the loop body until the condition becomes true.
  • The output of this loop will be the same as in Part 1:
1024
512
256
128
64
32
16
8
4
2
1

Source code in the ruby programming language

i = 1024
while i > 0 do
   puts i
   i /= 2
end

puts i = 1024
puts i /= 2 while i > 0

i = 1024
until i <= 0 do
   puts i
   i /= 2
end

  

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