cjjuice

[179] pry(main)> n = 1000000
=> 1000000
[180] pry(main)> Benchmark.bm(7) do |x|
[180] pry(main)*   x.report('1:') { ->(str) { n.times { chars = str.chars; (1..chars.length).to_a.tap { |a| chars.each_with_index { |c, i| a[-i-1] = c } }.join } }.call('r4v3n') }
[180] pry(main)*   x.report('2:') { ->(str) { n.times { [].tap { |a| chars = str.chars; str.size.times { a << chars.pop } }.join } }.call('r4v3n') }
[180] pry(main)*   x.report('3:') { ->(str) { n.times { str.size/2.times { |i| str[i], str[-i-1] = str[-i-1], str[i] }; str } }.call('r4v3n') }
[180] pry(main)*   x.report('4:') { ->(str) { n.times { str.reverse } }.call('r4v3n') }
[180] pry(main)* end
              user     system      total        real
1:        2.626973   0.019897   2.646870 (  2.657133)

cjjuice

print_checksum() {
  echo $1 | shasum -a 256
}

verify_checksum() {
  checksum=$(echo $1 | shasum -a 256)
  if [[ $2 == "$checksum" ]]; then
    echo "valid"
  else
    printf "invalid:\n$1 ($checksum)\nvs\n$2\n"

cjjuice

Keybase proof

I hereby claim:

• I am cjjuice on github.
• I am veritatem (https://keybase.io/veritatem) on keybase.
• I have a public key ASCX1WJ76AdPF1MCXjUeszrCorA9Ufq-Ezh4_1YtVvOLvQo

To claim this, I am signing this object:

cjjuice

# write a method that takes the array of hashes as an argument and 
# if any of the values of the element hashes are nil, 
# remove the hash from the parent array.
# i.e input: [{a: 4, b: nil}, {a: 5, b: 6}, {a: nil, b: 2}]
# output: [{a:5, b: 6}]

cjjuice

# Definition for singly-linked list.
# class ListNode
#     attr_accessor :val, :next
#     def initialize(val)
#         @val = val
#         @next = nil
#     end
# end

# @param {ListNode} l1

cjjuice

# @param {Integer[]} nums
# @param {Integer} target
# @return {Integer[]}
def two_sum(nums, target)
    solution = nil
    offset = 1
    while solution == nil
      nums.each_with_index do |num, i|
        if nums[i+offset] && num + nums[i+offset] == target
            solution = [i, i+offset]

cjjuice

Keybase proof

I hereby claim:

• I am cjjuice on github.
• I am cjjuice (https://keybase.io/cjjuice) on keybase.
• I have a public key whose fingerprint is DDEA 9E9C BE58 D506 E8AE B66B C4DF 0485 D543 7128

To claim this, I am signing this object: