s='He was so tired'
ans = true
Swap the first and last columns
Number of 1s in the Binary Representation of a Number
Number of 1s in a binary string
Find the sum of the negative elements under the main diagonal.
Find the product of the positive elements above the main diagonal.
Find the Sum of the Series:
Solve the following boundary value problem
Solve the system of equations.
Return the amount of palindromes (words) in the string.
Return the length of the longest word in the string.
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