Exercise $2-26($Algo$)($LO$2-2)$

Speedy Swift is a package delivery service that serves the greater Atlanta, Georgia, metropolitan area. To maintain customer loyalty, one of Speedy Swift's performance objectives is on$-$time delivery. To monitor its performance, each delivery is measured on the following scale: early $($package delivered before the promised time$),$ on$-$time $($package delivered within $15$ minutes of the promised time$),$ late $($package delivered more than $15$ minutes past the promised time$),$ or lost $($package never delivered$).$ Speedy Swift's objective is to deliver $99\%$ of all packages either early or on$-$time. Another objective is to never lose a package.