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Given a string, does "xyz" appear in the middle of the string? To define middle, we'll say that the number of chars to the left and right...
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Individual Exercises
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Given a day of the week encoded as 0 = Sun, 1 = Mon, 2 = Tue, ... 6 = Sat, and a boolean indicating if we are on vacation, return a...
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The number 6 is a truly great number. Given two int values, a and b, return true if either one is 6. Or if their sum or difference is 6....
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When squirrels get together for a party, they like to have cigars. A squirrel party is successful when the number of cigars is between 40...
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You and your date are trying to get a table at a restaurant. The parameter you is the stylishness of your clothes, in the range 0..10,...
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You have a green lottery ticket, with ints a, b, and c on it. If the numbers are all different from each other, the result is 0. If all...
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Write a method called listSearch() that takes in a target string and a list of other strings. This method returns a (possibly shorter)...
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Write an ArrayBasedStack<T> member method called reverseString() that takes a String as a parameter, then uses an ArrayBasedStack...
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Write an ArrayBasedStack<T> member method called decimalToBinary() that takes a decimal as an int parameter, then uses an...
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Write a function in Java that implements the following logic: Given a string, if the string begins with "red" or "blue" return that color...
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Write a function in Java that implements the following logic: Given 2 ints, a and b, return their sum. However, sums in the range 10..19...
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Given an integer array length of 1 or more, return the difference between the largest and smallest values in the array. Note that the...
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Return an array that is "left shifted" by one--so for an input of {6, 2, 5, 3}, the method returns {2, 5, 3, 6}. You may modify and...
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Given a binary tree, write a recursive function to return the difference between the sum of all node values at odd levels and sum of all...
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Write a recursive function BSTsmallcount that, given a BST and a value key, returns the number of nodes having values less than key. Your...
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Write a recursive function BSTsmallcount that, given a BST and a value key, returns the number of nodes having values less than key. Your...
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Given a binary tree, check if the tree satisfies the property that for each node, the sum of the values of its left and right children...
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Write a recursive function that returns true if there is a node in the given binary tree with the given value, and false otherwise. Note...
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Given a binary tree, write a recursive function to return the difference between the sum of all node values at odd levels and sum of all...
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The height of a binary tree is the length of the path to the deepest node. An empty tree has a height of 0, a tree with one node has a...
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Write a recursive function that increments by one the value for every node in the binary tree pointed at by root, then returns the...
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Write a recursive function to count the number of leaf nodes in the binary tree pointed at by root. You must use the isLeaf method to...
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We define a "root-to-leaf path" to be any sequence of nodes in a tree starting with the root node and proceeding downward to a leaf. The...
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Write a recursive function to set the value for each node in a binary tree to be its depth then return the modified tree. Assume that...
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Write a recursive function that returns the sum of the values for all of the nodes of the binary tree with root root.
Here are methods...