scmuser created the topic: Short Notes – Ruby Arrays- Insert, Append, length, Index, Removed
Short Notes – Ruby Arrays- Insert, Append, length, Index, Removed
Create a Ruby Array
letters = Array.new letters = [] letters = Array.new() letters = letters = Array.new(3) ( Define how many elements you array would be) letters = Array.new(3, 'me rocks') (Define each element with default values)
Accessing Elements
letters[0] - accessing First element letters[-1] - Accessing last element letters[-2]
Inserting/Adding elements
letters = Array.new() OUTPUT = ["a", "b", "c"]
letters.insert(0, 1) OUTPUT [1, "a", "b", "c", "d"]
letters.insert(-1, 'd') OUTPUT [1, "a", "b", "c", "d"]
letters << 'e' OUTPUT [1, "a", "b", "c", "d", "e"]
letters.push('f') OUTPUT [1, "a", "b", "c", "d", "e", "f"]
Removing Elements
letters.pop - Remove the last elements letters.delete_at(2) - Delete the element of particular index
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