C$++5\mathrm{.}12\mathrm{.}2$: Produce code that moves the first zero of an array to the end. Rearrange the following lines of code to produce code that moves the first zero of an array to the end. For example, if the array contains

$12304056$

then afterwards the array will contain

$12340560$

All lines are used. The variable len contains the length of the array.