First non-zero element in each column
Sum the entries of each column of a matrix which satisfy a logical condition.
Dimensions of a rectangle
Is this triangle right-angled?
Cipher or Decipher the number according to the second input - 1 key for all digits
Decipher the number 4 - 3 keys - order [1 2 3 2 1 2 3 ......]
Find the magnetic field in sollinoid
Cipher or Decipher the number according to the second input - 3 keys - order [1 2 3 2 1 2 3 ......]
Find the efficiency
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