2/3 過去了，發了 20 篇廢文
再 10 天就結束了，同時也是最忙的階段
一起把鐵人賽完賽吧!!
Codewars LV8
1
Given a string of digits, you should replace any digit below 5 with '0' and any digit 5 and above with '1'. Return the resulting string.
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11def fake_bin(s)
# Insert you code here...
end
describe "Basic test" do
it "should test for something" do
Test.assert_equals(fake_bin('45385593107843568'), '01011110001100111');
Test.assert_equals(fake_bin('509321967506747'), '101000111101101');
Test.assert_equals(fake_bin('366058562030849490134388085'), '011011110000101010000011011');
end
end
影片解題：
答案：
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11# Fake Binary
def fake_bin(s)
# 方法1
s.tr('123456789', '000011111')
# 方法2
s.chars.map{ |i| i.to_i < 5 ? 0 : 1}.join
# 方法3
s.gsub(/[1234]/, '0').gsub(/[56789]/, '1')
end
本文同步發布於 小菜的 Blog https://riverye.com/