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Write a method that takes a key and an associated value as parameters, and will only add them as anew entry in the map if the key is not...
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Individual Exercises
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Due to a coding problem at the phone company, Jane M's name keeps getting added to the no call list when she should not be there. Write a...
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The phone company is having trouble where bad phone numbers keep appearing under different names. Write a method that will return true if...
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Write a method that will return true if the parameter value is in both of the given sets. Try to use only one line of code in the method....
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Write a method that returns true if all values in the given array are in the given set. If any value from values is not in numberSet,...
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Write a method that will return a string indicating whether or not the double value is in doubleSet. For example if dSet contained {4.5,...
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A teacher is using a set to track the names of the students in their class. However, some students have decided to drop the class. Write...
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The set passed in as a parameter contains all integer values from 1 to 50 (inclusive--so 1 and 50 are both in the set). Remove all even...
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Sometimes, rather than remove a single item we may want to remove many items with a single method call. The method below takes in a set...
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The method below takes in two sets of integer values called setA and setB. Create a new set of integers, then add any value that is in...
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The method below takes in a map of integer key/value pairs. Create a new map and add each key from the original map into the new map,...
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The method below takes in a set of String names of students. Below, use this set names to create a map (either HashMap or TreeMap is...
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A teacher is tracking grades for two sections of a class using two maps. Each map uses the student's name as a key with their grade is...
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In the previous exercise, you took two maps and turned them into one larger map. Now the teacher wants to take that larger map and create...
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The method below takes in two integers as parameters and should throw an IllegalArgumentException if either parameter is the number 5. In...
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The method below takes an array of Jeroos and should throw an exception if any Jeroo in the array is null or if any is facing North.
In...
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The method below takes in a String parameter representing a username. It should throw an Exception if the username is less than 3...
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The method divideValues() will throw an IllegalArgumentException if either parameter is 5. The method below takes two integer values as...
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The validateJeroo() method takes in an array of Jeroo objects and could throw two different exceptions.
If a Jeroo in the array is null,...
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The following code runs a method called validateUser() that will throw an IllegalArgumentException if a username (passed in as a...
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A graph with relatively few edges is called:
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A graph with many edges is called:
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A graph that does not have a path of length 3 or more that connects a node v to itself is:
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A directed graph is one
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A complete graph is one which each pair of vertices: