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under big idea 5
Problem
a general description of a task that can (or cannot) be solved with an algorithm
Algorithm
a finite set of instructions that accomplish a task
Sequencing
putting steps in an order
Selection
deciding which steps to do next
Iteration
doing some steps over and over
Efficiency
a measure of how many steps are needed to complete an algorithm
Linear Search
a search algorithm checking each element in order until the desired value is found
Binary Search
a search algorithm starting in the middle and eliminating half the data until the desired value is found
Reasonable Time
algorithms with polynomial efficiency or lower running in a reasonable amount of time
Unreasonable Time
algorithms with exponential or factorial efficiencies running in an unreasonable amount of time
Heuristic
provides a "good enough" solution when an actual solution is impractical or impossible
Decision Problem
a problem with a yes/no answer
Optimization Problem
a problem aiming to find the "best" solution among many
Undecidable Problem
a problem with no algorithm always providing a correct yes/no answer
Sequential Computing
programs running one command at a time in order
Parallel Computing
breaking programs into small pieces, running some simultaneously
Distributed Computing
running programs on multiple devices
Speedup
time to complete a task sequentially divided by the time in parallel
Note 
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