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This approach uses the concept of closures to return a function that ignores its arguments and always returns the string 'Hello World'. In this method, createHelloWorld returns a new function that consistently returns the string when invoked.
Time Complexity: O(1) as the function performs a constant-time operation.
Space Complexity: O(1) since it doesn't use any extra space dependent on input size.
In Java, we utilize the Supplier functional interface to return a lambda expression () -> "Hello World". The lambda does not capture any variables and simply returns the static string.
This approach directly returns a function without using intermediate variables like closures. The returned function will always output 'Hello World', ignoring any provided arguments.
Time Complexity: O(1). The function executes a single return instruction.
Space Complexity: O(1) as there are no dynamic allocations.
1function helloWorldFunction() {
2 return "Hello World";
3}
4
5function createHelloWorld() {
6 return helloWorldFunction;
7}In JavaScript, we define a function helloWorldFunction that simply returns "Hello World". createHelloWorld returns a reference to helloWorldFunction.