April 2018
Intermediate to advanced
224 pages
7h
English
Content preview from Classic Computer Science Problems in SwiftBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 3. Constraint-satisfaction problems
A large number of problems that computational tools are used to solve can be broadly categorized as constraint-satisfaction problems (CSPs). CSPs are composed of variables with possible values that fall into ranges known as domains. Constraints between the variables must be satisfied in order for constraint-satisfaction problems to be solved. Those three core concepts—variables, domains, and constraints—are simple to understand, and their generality underlies the wide applicability of constraint-satisfaction problem solving.
Let’s consider an example problem. Suppose you are trying to schedule a Friday meeting for Joe, Mary, and Sue. Sue has to be at the meeting with at least one other person. For ...
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