do-while

I am very confused at the behavior of using the || operator on the .equals function. Is there a reason I can not use it on strings or something? this works: do{ System.out.println("Play again? [Y/N]"); //input: Y play = in.nextLine(); play = play.toUpperCase(); } while(!"Y".equals(input) ); //breaks out of loop (as it should) why doesn't this work?! do{ System.out.println("Play again? [Y/N]"); //input: Y play = in.nextLine(); play = play.toUpperCase(); } while( !"Y".equals(input) || !"N".equals(input) ); //infinite loop Let's put it into words. "Eat all of this fruit as long as it's not an

How do I write a Do .. While loop in C#? (Edit: I am a VB.NET programmer trying to make the move to C#, so I do have experience with .NET / VB syntax. Thanks!) The general form is: do { // Body } while (condition); Where condition is some expression of type bool . Personally I rarely write do/while loops - for , foreach and straight while loops are much more common in my experience. The latter is: while (condition) { // body } The difference between while and do...while is that in the first case the body will never be executed if the condition is false to start with - whereas in the latter

This question already has an answer here: How to use java.util.Scanner to correctly read user input from System.in and act on it? 1 answer Alright, so the code is pretty straight forward. Generic class ourSet, that takes in some elements, puts it in a LinkedList, and does some functions on the two sets. My problem is actually quite unrelated the general concept of the project, its more in the "user input interface" I've created. I want it to take in some Strings and add it to the set, then while receiving the string "EXIT" (all caps), to exit the loop, and do the same for the next set. What is

I've never understood why using a do while loops is necessary. I understand what they do, Which is to execute the code that the while loop contains without checking if the condition is true first. But isn't the below code: do{ document.write("ok"); } while(x == "10"); The exact same as: document.write("ok"); while(x == "10"){ document.write("ok"); } Maybe I'm being very stupid and missing something obvious out but I don't see the benefit of using do while over my above example. Your example code is wrong: do{ document.write("ok"); }while(x == "10"){ document.write("ok"); } This would be the

I was wondering about how to write do-while-style loop? I found this post : you can use repeat{} and check conditions whereever using if() and exit the loop with the "break" control word. I am not sure what it exactly means. Can someone please elaborate if you understand it and/or if you have a different solution? Pretty self explanatory. repeat{ statements... if(condition){ break } } Or something like that I would think. To get the effect of the do while loop, simply check for your condition at the end of the group of statements. See ?Control or the R Language Definition: > y=0 > while(y <5){