Problem $1$: Write a function named sort$\_$as$\_$str that takes three integers and return a string containing the numbers in sorted order.

For example: sort$\_$as$\_$str $546$ would return $"4$:$5$:$6"$

Problem $2$: Write the following functions:

abs a $-$ return the absolute value of a

inc a $-$ returns a $+1$

dec a $-$ return a $1$

double a $-$ returns $2*$ a

tribple a $$ return a $*3$

half a $$ return a $/2$

Print the result for the expression below:

$-2|>$ double $|>$ triple $|>$ inc $|>$ half $|>$ abs $|>$ dec $|>$ dec

Problem $3$: Write a recursive function named divide that takes two integers that returns the result of the number by the second number. You can assume that the numbers are positive. The function uses the $-($subtraction$)$ operator to recursively compute result. The result is the number of time it takes to decrement the first number by the second number until the first number is less than the second number.

divide $52$ would return $2$

divide $123$ would return $4$