Just submit your solution on any Wednesday.
Return the largest number that is adjacent to a zero
Rotate a Matrix by 90 degrees
Summation of array
Find the area of a triangle
NaN (欠損値) が含まれている行を削除しよう
Go back n times
Bridge and Torch Problem - Length of Unique Time List
Lunar Arithmetic (Multiplication)
Dealing with correlation results!
Write out numbers in words
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