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I understand what you did for the first and second method. But can you please explain what does 3rd method do. In other words, how does "" convert integer into string? Thanks
We know that "" is of type String. It is known as the empty string. It is a String with no characters in it. The + operator, when used on the right side of a String, simply connects stuff to the right of the original String. If what it's connecting is not yet a String, it automatically converts it into one, which is what we want for this exercise.
""+"Hello"+"there."
becomes the String "Hello there." and
""+n
becomes the String n, where n was automatically converted into a String for us.
I agree, the 3rd solution is probably less efficient because it has to do an unnecessary concatenation (+). I also like solution 1 and 2 better since it's clearer what the code accomplishes.
i was busy making if statements for 2 hours since it says n needs to be between -100 and 100, the code given doesnt have this feature, then I copy and pasted second one and banged my head on the table
Me too. The exercise definitely is misleading at that point. I tried all three methods but unfortunately I tried inside the if statement which led to an error.
Great solutions! I like the second in particular, it seems to me like it is the most readable one.
For anyone who struggled to get this problem right, I recommend taking an introductory Java course, focusing on the basics. You can a couple of these courses here: https://classpert.com/java-programming
for the first solution you mentioned there is an error,
Solution.java:15: error: cannot find symbol
String s=String.valueof(n);
^
symbol: method valueof(int)
location: class String
1 error
Java Int to String
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Java solution
Here are 3 ways to convert an int to a String
From my HackerRank Java solutions.
I understand what you did for the first and second method. But can you please explain what does 3rd method do. In other words, how does "" convert integer into string? Thanks
We know that "" is of type String. It is known as the empty string. It is a String with no characters in it. The + operator, when used on the right side of a String, simply connects stuff to the right of the original String. If what it's connecting is not yet a String, it automatically converts it into one, which is what we want for this exercise.
becomes the String "Hello there." and
becomes the String n, where n was automatically converted into a String for us.
HackerRank solutions.
Thank you very much
3rd one was simple and smart. Thanks
General Kenobi
yes ,im also ,2&3 rd class gives some confusion
Isn't the third method inefficient? It's anyway gonna use Integer.toString
I agree, the 3rd solution is probably less efficient because it has to do an unnecessary concatenation (+). I also like solution 1 and 2 better since it's clearer what the code accomplishes.
HackerRank solutions.
Doesn't String.valueOf() call Integer.toString in it's implementation?
public static String valueOf(int i) { return Integer.toString(i); }
i want full discussion
i was busy making if statements for 2 hours since it says n needs to be between -100 and 100, the code given doesnt have this feature, then I copy and pasted second one and banged my head on the table
Me too. The exercise definitely is misleading at that point. I tried all three methods but unfortunately I tried inside the if statement which led to an error.
same ,i too tried all the methods available but i cound't get result
Works like if statement
String s = (-100 <= n && n <= 100) ? Integer.toString(n) : null;
String s =String.format("%03d",n); But you need to konw a digit number first.
i used d third method, i am getting no compile time error but a run time error, can you explain why..?
Which method?
use only :- String s=Integer.toString(n);
can u plz show ur code
i think this is good
Nice..........
thanks, that really helped!
DoNotTerminate.forbidExit(); what is need of this? please explain
You can ignore that. They made that so that their code doesn't terminate when they're validating your solution.
HackerRank solutions.
one word thankyou
Last one was splendid!
Great solutions! I like the second in particular, it seems to me like it is the most readable one.
For anyone who struggled to get this problem right, I recommend taking an introductory Java course, focusing on the basics. You can a couple of these courses here: https://classpert.com/java-programming
thank you , bro
Here is the stackoverflow question regarding conversion..
https://stackoverflow.com/questions/653990/what-is-the-most-efficient-way-to-convert-an-int-to-a-string
If you do not want to read this link.. Just remember that Integer.toString is the fastest among them all.
for the first solution you mentioned there is an error, Solution.java:15: error: cannot find symbol String s=String.valueof(n); ^ symbol: method valueof(int) location: class String 1 error
tq bro
can you explain me the use of last method please.
anyone who know the ans please explain me ,i got stuck