From: "Jesús Gabriel y Galán" Date: 2011-03-18T07:14:54+09:00 Subject: Re: Replacing elements in an array? On Thu, Mar 17, 2011 at 10:45 PM, Jen wrote: > Hello, > > When I run >  puts @offspring.inspect > > After populating it with copies of @board, but before attempting to replace > the elements containing "_" the result is: > > [ [[0, 4, 5, 9, 8, 7, 6, 2, 1], [1, 9, 2, 6, 5, 4, 3, 8, 7], [8, 7, 6, 3, 2, > 1, 5, 4, 9], [5, 2, 9, 8, 1, 6, 4, 7, 3], [4, 3, 1, 7, 9, 2, 8, 5, 6], [6, > 8, 7, 5, 4, 3, 1, 9, 2], [2, 5, 3, 4, 6, 9, 7, 1, 8], [7, 1, 8, 2, 3, 5, 9, > 6, 4], [9, 6, 4, 1, 7, 8, 2, 3, 5]], [[0, 4, 5, 9, 8, 7, 6, 2, 1], [1, 9, 2, 6, 5, 4, 3, 8, 7], [8, 7, 6, 3, 2, 1, 5, 4, 9], [5, 2, 9, 8, 1, 6, 4, 7, 3], > [4, 3, 1, 7, 9, 2, 8, 5, 6], [6, 8, 7, 5, 4, 3, 1, 9, 2], [2, 5, 3, 4, 6, 9, > 7, 1, 8], [7, 1, 8, 2, 3, 5, 9, 6, 4], [9, 6, 4, 1, 7, 8, 2, 3, 5]], [[0, 4, 5, 9, 8, 7, 6, 2, 1], [1, 9, 2, 6, 5, 4, 3, 8, 7], [8, 7, 6, 3, 2, 1, 5, 4, > 9], [5, 2, 9, 8, 1, 6, 4, 7, 3], [4, 3, 1, 7, 9, 2, 8, 5, 6], [6, 8, 7, 5, > 4, 3, 1, 9, 2], [2, 5, 3, 4, 6, 9, 7, 1, 8], [7, 1, 8, 2, 3, 5, 9, 6, 4], > [9, 6, 4, 1, 7, 8, 2, 3, 5]], [[0, 4, 5, 9, 8, 7, 6, 2, 1], [1, 9, 2, 6, 5, > 4, 3, 8, 7], [8, 7, 6, 3, 2, 1, 5, 4, 9], [5, 2, 9, 8, 1, 6, 4, 7, 3], [4, > 3, 1, 7, 9, 2, 8, 5, 6], [6, 8, 7, 5, 4, 3, 1, 9, 2], [2, 5, 3, 4, 6, 9, 7, > 1, 8], [7, 1, 8, 2, 3, 5, 9, 6, 4], [9, 6, 4, 1, 7, 8, 2, 3, 5]] ] > > Let me know if you want me to send the rest of my code. This is the problem. The code you showed initially was expecting a "one-dimension" array, a flattened array, while here you have an array that contains 4 arrays that contain 9 arrays of integers. To replace all 0s with 9s in this structure you have to go deeper: irb(main):001:0> @offspring = [[[0, 4, 5, 9, 8, 7, 6, 2, 1], [1, 9, 2, 6, 5, 4, 3, 8, 7], [8, 7, 6, 3, 2, 1, 5, 4, 9], [5, 2, 9, 8, 1, 6, 4, 7, 3], [4, 3, 1, 7, 9, 2, 8, 5, 6], [6, 8, 7, 5, 4, 3, 1, 9, 2], [2, 5, 3, 4, 6, 9, 7, 1, 8], [7, 1, 8, 2, 3, 5, 9, 6, 4], [9, 6, 4, 1, 7, 8, 2, 3, 5]], [[0, 4, 5, 9, 8, 7, 6, 2, 1], [1, 9, 2, 6, 5, 4, 3, 8, 7], [8, 7, 6, 3, 2, 1, 5, 4, 9], [5, 2, 9, 8, 1, 6, 4, 7, 3], [4, 3, 1, 7, 9, 2, 8, 5, 6], [6, 8, 7, 5, 4, 3, 1, 9, 2], [2, 5, 3, 4, 6, 9, 7, 1, 8], [7, 1, 8, 2, 3, 5, 9, 6, 4], [9, 6, 4, 1, 7, 8, 2, 3, 5]], [[0, 4, 5, 9, 8, 7, 6, 2, 1], [1, 9, 2, 6, 5, 4, 3, 8, 7], [8, 7, 6, 3, 2, 1, 5, 4, 9], [5, 2, 9, 8, 1, 6, 4, 7, 3], [4, 3, 1, 7, 9, 2, 8, 5, 6], [6, 8, 7, 5, 4, 3, 1, 9, 2], [2, 5, 3, 4, 6, 9, 7, 1, 8], [7, 1, 8, 2, 3, 5, 9, 6, 4], [9, 6, 4, 1, 7, 8, 2, 3, 5]], [[0, 4, 5, 9, 8, 7, 6, 2, 1], [1, 9, 2, 6, 5, 4, 3, 8, 7], [8, 7, 6, 3, 2, 1, 5, 4, 9], [5, 2, 9, 8, 1, 6, 4, 7, 3], [4, 3, 1, 7, 9, 2, 8, 5, 6], [6, 8, 7, 5, 4, 3, 1, 9, 2], [2, 5, 3, 4, 6, 9, 7, 1, 8], [7, 1, 8, 2, 3, 5, 9, 6, 4], [9, 6, 4, 1, 7, 8, 2, 3, 5]]] => [[[0, 4, 5, 9, 8, 7, 6, 2, 1], [1, 9, 2, 6, 5, 4, 3, 8, 7], [8, 7, 6, 3, 2, 1, 5, 4, 9], [5, 2, 9, 8, 1, 6, 4, 7, 3], [4, 3, 1, 7, 9, 2, 8, 5, 6], [6, 8, 7, 5, 4, 3, 1, 9, 2], [2, 5, 3, 4, 6, 9, 7, 1, 8], [7, 1, 8, 2, 3, 5, 9, 6, 4], [9, 6, 4, 1, 7, 8, 2, 3, 5]], [[0, 4, 5, 9, 8, 7, 6, 2, 1], [1, 9, 2, 6, 5, 4, 3, 8, 7], [8, 7, 6, 3, 2, 1, 5, 4, 9], [5, 2, 9, 8, 1, 6, 4, 7, 3], [4, 3, 1, 7, 9, 2, 8, 5, 6], [6, 8, 7, 5, 4, 3, 1, 9, 2], [2, 5, 3, 4, 6, 9, 7, 1, 8], [7, 1, 8, 2, 3, 5, 9, 6, 4], [9, 6, 4, 1, 7, 8, 2, 3, 5]], [[0, 4, 5, 9, 8, 7, 6, 2, 1], [1, 9, 2, 6, 5, 4, 3, 8, 7], [8, 7, 6, 3, 2, 1, 5, 4, 9], [5, 2, 9, 8, 1, 6, 4, 7, 3], [4, 3, 1, 7, 9, 2, 8, 5, 6], [6, 8, 7, 5, 4, 3, 1, 9, 2], [2, 5, 3, 4, 6, 9, 7, 1, 8], [7, 1, 8, 2, 3, 5, 9, 6, 4], [9, 6, 4, 1, 7, 8, 2, 3, 5]], [[0, 4, 5, 9, 8, 7, 6, 2, 1], [1, 9, 2, 6, 5, 4, 3, 8, 7], [8, 7, 6, 3, 2, 1, 5, 4, 9], [5, 2, 9, 8, 1, 6, 4, 7, 3], [4, 3, 1, 7, 9, 2, 8, 5, 6], [6, 8, 7, 5, 4, 3, 1, 9, 2], [2, 5, 3, 4, 6, 9, 7, 1, 8], [7, 1, 8, 2, 3, 5, 9, 6, 4], [9, 6, 4, 1, 7, 8, 2, 3, 5]]] irb(main):002:0> def find_empty! irb(main):003:1> @offspring.each do |board| irb(main):004:2* board.each do |row| irb(main):005:3* row.map! {|x| x == 0 ? 9 : x} irb(main):006:3> end irb(main):007:2> end irb(main):008:1> end => nil irb(main):009:0> find_empty! => [[[9, 4, 5, 9, 8, 7, 6, 2, 1], [1, 9, 2, 6, 5, 4, 3, 8, 7], [8, 7, 6, 3, 2, 1, 5, 4, 9], [5, 2, 9, 8, 1, 6, 4, 7, 3], [4, 3, 1, 7, 9, 2, 8, 5, 6], [6, 8, 7, 5, 4, 3, 1, 9, 2], [2, 5, 3, 4, 6, 9, 7, 1, 8], [7, 1, 8, 2, 3, 5, 9, 6, 4], [9, 6, 4, 1, 7, 8, 2, 3, 5]], [[9, 4, 5, 9, 8, 7, 6, 2, 1], [1, 9, 2, 6, 5, 4, 3, 8, 7], [8, 7, 6, 3, 2, 1, 5, 4, 9], [5, 2, 9, 8, 1, 6, 4, 7, 3], [4, 3, 1, 7, 9, 2, 8, 5, 6], [6, 8, 7, 5, 4, 3, 1, 9, 2], [2, 5, 3, 4, 6, 9, 7, 1, 8], [7, 1, 8, 2, 3, 5, 9, 6, 4], [9, 6, 4, 1, 7, 8, 2, 3, 5]], [[9, 4, 5, 9, 8, 7, 6, 2, 1], [1, 9, 2, 6, 5, 4, 3, 8, 7], [8, 7, 6, 3, 2, 1, 5, 4, 9], [5, 2, 9, 8, 1, 6, 4, 7, 3], [4, 3, 1, 7, 9, 2, 8, 5, 6], [6, 8, 7, 5, 4, 3, 1, 9, 2], [2, 5, 3, 4, 6, 9, 7, 1, 8], [7, 1, 8, 2, 3, 5, 9, 6, 4], [9, 6, 4, 1, 7, 8, 2, 3, 5]], [[9, 4, 5, 9, 8, 7, 6, 2, 1], [1, 9, 2, 6, 5, 4, 3, 8, 7], [8, 7, 6, 3, 2, 1, 5, 4, 9], [5, 2, 9, 8, 1, 6, 4, 7, 3], [4, 3, 1, 7, 9, 2, 8, 5, 6], [6, 8, 7, 5, 4, 3, 1, 9, 2], [2, 5, 3, 4, 6, 9, 7, 1, 8], [7, 1, 8, 2, 3, 5, 9, 6, 4], [9, 6, 4, 1, 7, 8, 2, 3, 5]]] irb(main):010:0> @offspring => [[[9, 4, 5, 9, 8, 7, 6, 2, 1], [1, 9, 2, 6, 5, 4, 3, 8, 7], [8, 7, 6, 3, 2, 1, 5, 4, 9], [5, 2, 9, 8, 1, 6, 4, 7, 3], [4, 3, 1, 7, 9, 2, 8, 5, 6], [6, 8, 7, 5, 4, 3, 1, 9, 2], [2, 5, 3, 4, 6, 9, 7, 1, 8], [7, 1, 8, 2, 3, 5, 9, 6, 4], [9, 6, 4, 1, 7, 8, 2, 3, 5]], [[9, 4, 5, 9, 8, 7, 6, 2, 1], [1, 9, 2, 6, 5, 4, 3, 8, 7], [8, 7, 6, 3, 2, 1, 5, 4, 9], [5, 2, 9, 8, 1, 6, 4, 7, 3], [4, 3, 1, 7, 9, 2, 8, 5, 6], [6, 8, 7, 5, 4, 3, 1, 9, 2], [2, 5, 3, 4, 6, 9, 7, 1, 8], [7, 1, 8, 2, 3, 5, 9, 6, 4], [9, 6, 4, 1, 7, 8, 2, 3, 5]], [[9, 4, 5, 9, 8, 7, 6, 2, 1], [1, 9, 2, 6, 5, 4, 3, 8, 7], [8, 7, 6, 3, 2, 1, 5, 4, 9], [5, 2, 9, 8, 1, 6, 4, 7, 3], [4, 3, 1, 7, 9, 2, 8, 5, 6], [6, 8, 7, 5, 4, 3, 1, 9, 2], [2, 5, 3, 4, 6, 9, 7, 1, 8], [7, 1, 8, 2, 3, 5, 9, 6, 4], [9, 6, 4, 1, 7, 8, 2, 3, 5]], [[9, 4, 5, 9, 8, 7, 6, 2, 1], [1, 9, 2, 6, 5, 4, 3, 8, 7], [8, 7, 6, 3, 2, 1, 5, 4, 9], [5, 2, 9, 8, 1, 6, 4, 7, 3], [4, 3, 1, 7, 9, 2, 8, 5, 6], [6, 8, 7, 5, 4, 3, 1, 9, 2], [2, 5, 3, 4, 6, 9, 7, 1, 8], [7, 1, 8, 2, 3, 5, 9, 6, 4], [9, 6, 4, 1, 7, 8, 2, 3, 5]]] Jesus.