I have a problem with a java problem. The problem is, You have a input file called climb.dat, inside the data file is: 3 2 5 8 The output is to have a left angled triangle with the data. One thing I do know is that the first number,(3), is how many left angled triangles and every triangle is supposed to be made up of a character which is c. How its supposed to look like is like this: c cc c cc ccc cccc ccccc c cc ccc cccc ccccc cccccc ccccccc cccccccc I don't how to solve this problem. I need help!!
Java problem called climb (not from the website)
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11 January, 07:52
are you sure about the first number? My guess would have been it represents the char to output in the triangles.
11 January, 22:56
Hi Thomas, as for your question, yes I am sure about the first number. I also tried your code and it's giving me an error saying "the target type of this expression must be a functional interface".
12 January, 07:27
the necessary imports:You also can change the way of reading the file to what you're familiar with. It just reads the file, converts each line to an Integer, adds it to a list and finally returns that list. The first number imho is then a redundant information (?) as the following numbers each represents a triangle. In that case you can just ignore it or (but why when there is no additional content in the file) use it in the read loop to read a specific amount of lines/ numbers.
12 January, 21:32
it is giving me an error in the part that goes, " return lines.map(Integer::parseInt "
12 January, 21:48
I've tested this with Java 8, 17 and 19 so either use correct imports (as written above) or one of the alternatives I described (again see my 2nd post here) or instead of a method reference use a lambda likethen there is no chance of an ambiguous call. (best would be to use the alternative in my second post)