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Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does the method length() do?
💡 Hint: Think about how you measure 'Hello'.
Question 2
Easy
What does charAt(0) return for the string 'Java'?
💡 Hint: What character is at the start of 'Java'?
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What does the method length() return?
- Number of characters
- Number of words
- First character
💡 Hint: It's related to how many letters or spaces are in the string.
Question 2
Does charAt(3) for 'Hello' return 'l'?
- True
- False
💡 Hint: What is the index for l in Hello?
Solve 3 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Create a function that takes a string input, trims it, checks its length, and returns true if the length is greater than 10.
💡 Hint: This function processes the string and checks its final size.
Question 2
Write a method to concatenate two strings and return the result in uppercase.
💡 Hint: Focus on combining the strings before changing their cases.
Challenge and get performance evaluation