Leap year checker Calculator

Checkes if a given year is leap year or not.

Leap year checker
Year
    1. (1582~)

    1.  
[ Algorithm ]
if year is not divisible by 4 then it is a common year
else if year is not divisible by 100 then it is a leap year
else if year is not divisible by 400 then it is a common year
else it is a leap year
Leap year checker
[1-7] /7Disp-Num
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[1]  2020/12/16 01:42   Male / Under 20 years old / An engineer / Useful /
Purpose of use
to verify code output
[2]  2020/04/28 05:25   Female / Under 20 years old / High-school/ University/ Grad student / Very /
Purpose of use
To see if I'm born on a leap year.
[3]  2020/02/27 10:42   Male / 20 years old level / A teacher / A researcher / Useful /
Purpose of use
learning to code java.
[4]  2020/01/05 03:13   Male / 20 years old level / High-school/ University/ Grad student / Useful /
Purpose of use
Learning to code example.
[5]  2019/10/29 20:50   Male / 20 years old level / Self-employed people / Useful /
Purpose of use
Curiosity
[6]  2019/09/01 14:07   Male / 20 years old level / High-school/ University/ Grad student / Not at All /
Comment/Request
(1700 % 4 == 0) and (1700 % 100 != 0) is not leap year
but why (170 % 4 == 0) and (1704 % 100 != 0) is leap year,,
Please,, answer me,,
from Keisan
(year % 4 == 0) and (year % 100 != 0) is a leap year.
[7]  2019/07/31 13:40   Male / 30 years old level / An engineer / Very /
Purpose of use
Learning to code

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