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# Exercise Title Features Description Platform Keywords
1 B+ Tree Insertion Proficiency Exercise Tracing Exercise Interactive proficiency exercise for insertion into a B+ Tree. User clicks on tree nodes to indicate how the insert process... OpenDSA B-Tree, Tree-Based Indexing
2 Building a B+ Tree of Degree 5 Algorithm Visualization Slideshow showing a series of insert operations in a B+ Tree of degree 5. OpenDSA Tree-Based Indexing, B-Tree
3 Building a B+ Tree of Degree 4 Algorithm Visualization Slideshow showing a series of insert operations in a B+ Tree of degree 4. OpenDSA Tree-Based Indexing, B-Tree
4 Deletion from a B+ Tree of Degree 4 Algorithm Visualization Slideshow showing a series of delete operations in a B+ Tree of degree 4. OpenDSA Tree-Based Indexing, B-Tree
5 Search in a B+ Tree of Degree 4 Algorithm Visualization Slideshow showing a series of search operations in a B+ Tree of degree 4. OpenDSA Tree-Based Indexing, B-Tree
6 Given four numbers a, b, c, d, return true if exactly two of them are the same. Code Completion Given four numbers a, b, c, d, return true if exactly two of them are the same. CodeCheck Branches, Branches with Functions
7 Given integers a and b, return a list containing a, a + 1, a + 2, . Code Completion Given integers a and b, return a list containing a, a + 1, a + 2, ..., b. CodeCheck Lists - Simple Exercises, Filling
8 Given integers a and b, return a list containing all even numbers that are at least a and at most b. Code Completion Given integers a and b, return a list containing all even numbers that are at least a and at most... CodeCheck Lists - Simple Exercises, Filling
9 DFA Exercise: b Surrounds a Automata Construction Exercise User creates a DFA that accepts the langugage of strings where every a is surrounded by b's. OpenDSA Deterministic Finite Automata
10 Given two lists of integers a and b of the same length, count the number of positions where the lists have the same elements. Code Completion Given two lists of integers a and b of the same length, count the number of positions where the lists... CodeCheck Lists - Simple Exercises, Counting Elements
11 Given two lists of integers a and b of the same length, count the number of positions where the list elements differ by at least 2. Code Completion Given two lists of integers a and b of the same length, count the number of positions where the list... CodeCheck Lists - Simple Exercises, Counting Elements
12 Given two lists a and b, remove all elements of b from a. Code Completion Given two lists a and b, remove all elements of b from a. CodeCheck Lists - Simple Exercises, Double Loops
13 Given two lists a and b, return a list that contains all elements occurring in a but not in b. Code Completion Given two lists a and b, return a list that contains all elements occurring in a but not in b. CodeCheck Lists - Simple Exercises, Double Loops
14 Given two two-dimensional arrays a and b of integers with the same number of rows and columns, return a list of the same size where each element is the greater of the corresponding elements in the two arrays. Code Completion Given two two-dimensional arrays a and b of integers with the same number of rows and columns, return a list... CodeCheck Two-Dimensional Arrays, Producing 2D Arrays
15 CFG Exercise: a's and b's are equal Grammar Construction Exercise User creates a CFG that generates strings in the language where the number of a's and b's is equal. OpenDSA Context-Free Grammar
16 DFA Exercise: Even a's Odd b's Automata Construction Exercise User creates a DFA that accepts the langugage of strings with an even number of a's and an odd number... OpenDSA Deterministic Finite Automata
17 Grammar Construction Exercise: a's and b's Grammar Construction Exercise Exercise where user must write the grammar for a given language. This language has some a's followed by some b's. OpenDSA Language, Grammar
18 PDA Exercise: Equal a's to b's or c's Automata Construction Exercise User creates a Pushdowns Automata that accepts the langugage of a's b's and c's with as many a's as either... OpenDSA Pushdown Automata
19 PDA Exercise: Equal a's and b's Automata Construction Exercise User creates a Pushdowns Automata that accepts the langugage a^ic^jb^i. OpenDSA Pushdown Automata
20 Regular Expression Exercise: Strings of 2 b's and c's RegEx Writing Exercise User writes an regular expression for the language of strings where the number of b's and c's sums to 2. OpenDSA Regular Expression
21 Given a list of integers and two values a and b, count how many elements are at least a and at most b. Code Completion Given a list of integers and two values a and b, count how many elements are at least a and... CodeCheck Lists - Simple Exercises, Counting Elements
22 Given a list of integers and two values a and b, return the sum of all elements that are at least a and at most b. Code Completion Given a list of integers and two values a and b, return the sum of all elements that are at... CodeCheck Lists - Simple Exercises, Sums, Averages, Products
23 PDA Exercise: Twice as many a's as b's Automata Construction Exercise User creates a Pushdowns Automata that accepts the langugage of strings that have twice as many a's as b's. OpenDSA Pushdown Automata
24 Regular Expression Exercise: Strings of a's Preceded or Followed by b RegEx Writing Exercise User writes an regular expression for the language of strings where every a is either proceeded or followed by b. OpenDSA Regular Expression
25 Regular Grammar Exercise: Number of a's and b's is Odd Grammar Construction Exercise User writes an regular grammar for the language of strings with an odd length. OpenDSA Regular Expression, Regular Grammar
26 DFA Exercise: Complement Even a, 3 b's Automata Construction Exercise User creates a DFA that accepts the complement of the langugage of strings with an even number of a's and... OpenDSA Deterministic Finite Automata
27 DFA Exercise: Even a's, b's, odd a's Automata Construction Exercise User creates a DFA that accepts the langugage of strings with an even number of a's, followed by at least... OpenDSA Deterministic Finite Automata
28 DFA Exercise: Even a, 3 b's Automata Construction Exercise User creates a DFA that accepts the langugage of strings with an even number of a's and at least 3... OpenDSA Deterministic Finite Automata
29 DFA Exercise: Odd a's, 3 b's Automata Construction Exercise User creates a DFA that accepts the langugage of strings with an odd number of a's and at most 3... OpenDSA Deterministic Finite Automata
30 DFA Exercise: Odd a's, Even b's Automata Construction Exercise User creates a DFA that accepts the langugage of strings with an odd number of a's and an even number... OpenDSA Deterministic Finite Automata
31 Given a string in which words are separated by spaces, and two words a and b, interchange all occurrences of a and b. Code Completion Given a string in which words are separated by spaces, and two words a and b, interchange all occurrences of... CodeCheck Strings, Words
32 c_promjena_vrijednosti_preko_pokazivaca_2 U programu su date cjelobrojne varijable a i b. Pokazivač p prvobitno pokazuje na varijablu a. Vaš zadatak je da... PCEX
33 Comparisons Construct a program that prints out whether variable a is bigger than b. jsParsons boolean expressions, boolean logic, comparison operators
34 Practicar el uso de comparaciones Construye un programa que imprima si la variable a es mayor que b. jsParsons boolean expressions, conditionals
35 DFA Exercise: Compliment of No 3 a's Automata Construction Exercise User creates a DFA that accepts the langugage of strings of a's and b's that have 3 consecutive a's. OpenDSA Deterministic Finite Automata
36 DFA Exercise: No 3 a's Automata Construction Exercise User creates a DFA that accepts the langugage of strings of a's and b's without 3 consecutive a's. OpenDSA Deterministic Finite Automata
37 DFA Exercise: No ba Automata Construction Exercise User creates a DFA that accepts the langugage of strings with a's and b's that does not end in ba. OpenDSA Deterministic Finite Automata
38 Turing Machine Exercise: More a's Automata Construction Exercise User creates a Turing machine that recognizes the language with more a's than b's or c's. OpenDSA Turing Machine
39 Increment/Decrement Operators (Case 1) Construct a program that performs increment/decrement operations on variable a (with initial value of 4) and variable b (with initial... PCEX
40 Increment/Decrement Operators (Case 2) Construct a program that performs increment/decrement operations on variable a (with initial value of 8) and variable b (with initial... PCEX
41 Increment/Decrement Operators (Case 3) Construct a program that performs increment/decrement operations on variable a (with initial value of 6) and variable b (with initial... PCEX
42 Increment/Decrement Operators (Case 1) Construct a program that performs increment/decrement operations on variable a (with initial value of 4) and variable b (with initial... PCEX
43 Increment/Decrement Operators (Case 2) Construct a program that performs increment/decrement operations on variable a (with initial value of 8) and variable b (with initial... PCEX
44 Increment/Decrement Operators (Case 3) Construct a program that performs increment/decrement operations on variable a (with initial value of 6) and variable b (with initial... PCEX
45 c_funkcija_suma_kolicnika Napisati funkciju sa prototipom double suma_kolicnika(int a, int b) koja računa i vraća sumu: S=a/1+a/2+a/3+...+a/b. U glavnom programu unijeti a... PCEX
46 XOR Construct a program that mimics a XOR gate (exclusive or). When input_a and input_b are the same, it should print... jsParsons boolean expressions, boolean logic, if-else statement, logical operators
47 Crear una compuerta XOR usando sentencias if...elif Construye un programa que imite una compuerta XOR (o exclusivo). Cuando input_a y input_b sean iguales, debe imprimir 0 y... jsParsons boolean expressions, conditionals
48 Return Bigger or None Construct a function that returns the bigger value of the given arguments. If a and b are equal, it should... jsParsons functions, if-else statement
49 Crear una función que devuelva el mayor de dos números Construye una funcion que devuelva el valor mayor de los argumentos dados. Si a y b son iguales, debe devolver... jsParsons conditionals, functions
50 DFA Exercise: Both Even or Odd Automata Construction Exercise User creates a DFA that accepts the langugage of strings with both even a's and b's, or both odd a's... OpenDSA Deterministic Finite Automata
51 DFA Exercise: Complement No ba Automata Construction Exercise User creates a DFA that accepts the complement of the langugage of strings with a's and b's that does not... OpenDSA Deterministic Finite Automata
52 Turing Machine Exercise: Palindromes Automata Construction Exercise User creates a Turing machine that recognizes the language of palindromes on strings of a's and b's. OpenDSA Turing Machine
53 Turing Machine Exercise: Erase abc Automata Construction Exercise User creates a Turing machine that erases a string of a's, b's, and c's. OpenDSA Turing Machine
54 Turing Machine Exercise: Keep abc Automata Construction Exercise User creates a Turing machine that moves over a string of a's, b's, and c's. OpenDSA Turing Machine
55 Characterizing Languages Exercise 1: Alternate Question Exercise on how to characterize the strings in the language for a given grammar on a's and b's. Alternate version. OpenDSA Language, Grammar
56 Characterizing Languages Exercise 1 Question Exercise on how to characterize the strings in the language for a given grammar on a's and b's. OpenDSA Language, Grammar
57 c_vrijednosti_u_pokazivacima_int Napisati program u kojem se deklarišu dvije cjelobrojne varijable i dva pokazivača na int. Postaviti pokazivač p da pokazuje na... PCEX
58 c_pretvaranje_broja_u_slovo Napisati program koji omogućava unos teksta sa maksimalno 1000 karaktera, a zatim u tekstu zamjenjuje sve brojeve sa slovom 'B'.... PCEX
59 Grammar Construction Exercise: abb Grammar Construction Exercise Exercise where user must write the grammar for a given language. This language has some a's followed by twice as... OpenDSA Language, Grammar
60 Grammar Construction Exercise: Palendrome Grammar Construction Exercise Exercise where user must write the grammar for a given language. This language is palendromes on a's and b's. OpenDSA Language, Grammar