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- irb(main):006:0> a = [5, 3, 4, 1]
- => [5, 3, 4, 1]
- irb(main):007:0> a.sort
- => [1, 3, 4, 5]
- irb(main):008:0> a
- => [5, 3, 4, 1]
- irb(main):009:0> a.any? {|i| i > 6}
- => false
- irb(main):011:0> a.any? {|i| i > 4}
- => true
- irb(main):012:0> a.all? {|i| i > 4}
- => false
- irb(main):013:0> a.all? {|i| i > 0}
- => true
- irb(main):014:0> a.collect {|i| i * 2}
- => [10, 6, 8, 2]
- irb(main):015:0> a
- => [5, 3, 4, 1]
- irb(main):016:0> a.select {|i| i % 2 == 0} #even
- => [4]
- irb(main):017:0> a.select {|i| i % 2 == 1}
- => [5, 3, 1]
- irb(main):018:0> a.max
- => 5
- irb(main):022:0> a.member?(2)
- => false
- irb(main):023:0>
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