30 !
rex has fitted an alarm door for his differently abled child. how does the device with his child?
a.
it would rex know if his child tries to venture out.
b.
it would his child know if a thief tries to barge in.
c.
it would remind his child to take timely walks.
d.
it would rex know if his child needs .
e.
it would rex know if guest come to visit.

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Use a physical stopwatch to record the length of time it takes to run the program. calculate the difference obtained by calls to the method system.currenttimemillis() just before the start of the algorithm and just after the end of the algorithm. calculate the difference obtained by calls to the method system.currenttimemillis() at the start of the program and at the end of the program so that the elapsed time includes the display of the result. use the value returned by the method system.currenttimemillis() just after the end of the algorithm as the elapsed time.

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