Arrange vector in ascending order
Find out missing number from a vector of 9 elements
Swap two numbers
2倍してみよう - ここからスタート！
What is Sum Of all elements of Matrix
Sum of unique multiples of 3 and 5
Find NaNs in the matrix
function to compute root mean square of first nn positive odd integers
Basics: counting digits of a number irrespective of the sign
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