I am proposing that the repeat and number of day for a particular alarm is being add to Alarm Klock, this gives the ability to choose number of days you want a particular alarm to run, be it from Sunday to Friday or anyways the user want it.
Mockups / Examples
Here is how it should look like
This shows the repeat section and number of days it should last.
Benefits
This will enable users repeat a particular alarm
It gives users the ability to set number of days the alarm should run
Some days can be skipped by just clickibg on the day and also it can be added by clicking on it again.