How to Calculate Weekday
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There is an algorithm problem, asks which day is it? Ex. Monday, Tuesday,
or Sunday.
There is one formula, which tells the answer very effieciently.
int we...
How to hide Hidden Files(Dot Files) on Mac
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1. Open your Terminal.
1. defaults write com.apple.finder AppleShowAllFiles YES
1. Press alt, then right click on the “Finder”, click “Rela...
It's Too Much About People's Privilege
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Recently, ever after the scandal of NSA's global surveillance system,
people are terrified by all of a sudden, it looks like more and more tech
columnist s...
Golden Bag with False Golden Coin Problem
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You are given 10 bags of gold coins. Nine bags contain coins that each
weigh 10 grams. One bag contains all false coins that weigh one gram less.
You must ...
