Question

How to use 2D array in Ruby

Answer 1

arr = Array[[5, 8, 1], [9, 7, 2]]

arr.each do |row|
    row.each do |n|
        puts n
    end
    puts "\n"
end



# run:
  
# 5
# 8
# 1

# 9
# 7
# 2

 

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Answer 2

arr = []

row = []
row.push(4)
row.push(8)
row.push(1)

arr.push(row)

row = []
row.push(9)
row.push(8)
row.push(7)

arr.push(row)
 
arr.each do |row|
    row.each do |n|
        puts n
    end
    puts "\n"
end
 
 
 
# run:
   
# 4
# 8
# 1

# 9
# 8
# 7

 

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