Download source codes for the following programs in Python:

$$ A program that adds every odd number in the range of $1-1,000,000$

$$ A program that adds every number that is divisible by $7$ in the range of $1-1,000,000$

$$ A program that adds every prime number in the range of $1-1,000,000$

$$ TWO Search algorithms $$ Linear Search & Binary Search

$$ TWO Sort algorithms $$ Selection Sort & Quick Sort

$2.$ Explain the operation of the above four programs in a step$-$by$-$step manner for each one of

the above programs.