Replace NaNs with the number that appears to its left in the row.
Is it a number?
Area of an equilateral triangle
MATLAB Basic: rounding III
Given a square and a circle, please decide whether the square covers more area.
Basic Quadratic Equation
Capitalized string operations
count upper and lower case characters
Sum of unique multiples of 3 and 5
basic matrix operations: rotate and find sum of diagonal elements of the resultant matrix
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