Computer Science Canada :: View topic - Java Sorting With IF Statements

Look throught the logic of it. "If the first number is greater than the second, do this, if that's not true, then check to see if the first number is greater than the second number... again." Take a look through the Java documentation and wrap your head around if statements, and see if you can't figure it out Smile

Author:	ds_matrix [ Tue Nov 06, 2007 6:46 pm ]
Post subject:	Java Sorting With IF Statements
Im supposed to create a program that asks the user to input 3 numbers and then sorts them in ascending order from highest to lowest My Current If Structure is: if (num1 > num2) { int tstore = num1; num1 = num2; num2 = tstore; } else if (num1 > num2) { int tstore = num1; num1 = num3; num3 = tstore; } else if (num2 > num3) { int tstore = num2; num2 = num3; num3 = tstore; } System.out.println(num1 + "," + num2 + "," + num3); and i tested it with n1=7, n2=99 and n3=3..and its not working and im not sure why Any help is greatly appreciated...Thanks!

Author:	Clayton [ Tue Nov 06, 2007 6:53 pm ]
Post subject:	RE:Java Sorting With IF Statements
Look throught the logic of it. "If the first number is greater than the second, do this, if that's not true, then check to see if the first number is greater than the second number... again." Take a look through the Java documentation and wrap your head around if statements, and see if you can't figure it out

Author:	ds_matrix [ Tue Nov 06, 2007 7:00 pm ]
Post subject:	Re: RE:Java Sorting With IF Statements
Clayton @ Tue Nov 06, 2007 6:53 pm wrote: Look throught the logic of it. "If the first number is greater than the second, do this, if that's not true, then check to see if the first number is greater than the second number... again." Take a look through the Java documentation and wrap your head around if statements, and see if you can't figure it out Trying to figure it out...not having the greatest luck lol

Author:	HeavenAgain [ Tue Nov 06, 2007 7:23 pm ]
Post subject:	RE:Java Sorting With IF Statements
well, try harder if (num1 > num2) { ... } else if (num1 > num2) {...} whats the difference between those 2 if statement (other than they are doing different things)?

Author:	Tony [ Tue Nov 06, 2007 7:40 pm ]
Post subject:	Re: RE:Java Sorting With IF Statements
ds_matrix @ Tue Nov 06, 2007 6:51 pm wrote: my friend helped me out it could be unnecessary difficult to figure out someone else's, in this case obviously broken, code. If you don't see the problem right away, you might be better off throwing out that entire part, and starting again from scratch. It's only a few lines of code, so it's no big deal. Though since this time you'll be writing all of it yourself, you'll have a better idea of what's going on.

Author:	Barbarrosa [ Tue Nov 06, 2007 11:30 pm ]
Post subject:	Re: Java Sorting With IF Statements
Basically, you need to double-check your logic and your syntax. You never call a variable you haven't assigned it a value; I think it's possible you missed that. You should also look at the logic and order of things. Are you planning to do more than one thing if a condition proves true? Stick it all in the same place, if you can, we want to check it as few times as possible. You should also try using commas between variables when you assign them on the same line. If you did your homework, the answers should come out of this.

Author:	syntax_error [ Wed Nov 07, 2007 8:12 pm ]
Post subject:	Re: Java Sorting With IF Statements
just a thought but you might want to combine ur boolean logic so that its efficacy is maximized of course do that using the && and \|\| syntax (not sure if that is the right word here)