Check out example codes for "how to turn rows into columns ruby". It will help you in understanding the concepts better.

Code Example 1

# Only works for an array of arrays, each sub-array must have same
# number of elements. 
array = [[1,2,3], [4,5,6], [7,8,9]]
array.transpose
#=> [[1,4,7], [2,5,8], [3,6,9]]

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