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System.out.println("Welcome to learncs.online!");
System.out.print("We are ");
for (int i = 0; i < 4; i++) {
System.out.print("so ");
}
System.out.println("excited to start your journey in computer science!");

Learn Computer Science Online

  • 75 focused lessons—from "Hello, world" to graph recursion
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  • 952 editable and runnable code examples
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  • 519 programming problems covering all core language features
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