[Solved] What are getters/setters good for? [duplicate]

Getters and setters are used in order to prevent code outwith the class from accessing implementation details. Maybe today some piece of data is just a string, but tomorrow it has be created by joining two other strings together and also keeping a count of the number of times the string is retrieved (OK, contrived … Read more

[Solved] Implementing with quadratic probing [closed]

With this code you are doing linear probing index = hash(entry.key); while (!is_vacant(index)) index = next_index(index); template <class RecordType> inline std::size_t table<RecordType>::next_index(std::size_t index) const // Library facilities used: cstdlib { return ((index+1) % CAPACITY); } Say your map is nearly full and hash returns 23, then the next slots you are going to test will … Read more

[Solved] Can’t return the answer

You are returning an array. The salary is in the the first position of you array. If you want to see the salary you would need to use return salary[0]; in your method. or System.out.println(calculateSalary(salary,riseRate)[0]); in the main. What you’re trying to print right now is the actual array, not a value. I am not … Read more

[Solved] How to reduce redundant coding in java?

I assume that the isHttps variable check is there for a reason(?) and therefore the second cast should actually be HttpURLConnection, meaning there is a typo in the question? If so the most methods used in the question are available in the parent class URLConnection without a cast, but not all. Fortunately HttpsURLConnection is a … Read more

[Solved] Python, A string split into many pieces. How many pieces are in there?

You could get the length of the list of items after splitting: len(my_long_string.split(‘;’)) Alternatively, count the number of semicolons and add one: my_long_string.count(‘;’) + 1 The latter is probably faster if you don’t need to know what the items are, but only how many items there are. len is a function that returns the number … Read more

[Solved] Minimum numbers of attacks needed [closed]

This can be modelled as a graph problem. Create a graph node for each row and column where there’s a monster. Connect the nodes if a monster is on that row and that column. This is a bipartite graph, and you want to do minimum vertex cover. König’s theorem shows that for bipartite graphs the … Read more

[Solved] What is the difference between char *exp=”a+b” and char exp[]=”a+b”? Are they stored the same way in memory or they differ?

What is the difference between char *exp=”a+b” and char exp[]=”a+b”? Are they stored the same way in memory or they differ? solved What is the difference between char *exp=”a+b” and char exp[]=”a+b”? Are they stored the same way in memory or they differ?

[Solved] No module named ‘PyPDF2._codecs’, even after already installed

This issue was only present in the PyPI distribution of PyPDF2==2.3.0 for a couple of hours. It was fixed with release 2.3.1. See #1011 for more details I’m the maintainer of PyPDF2. I’m sorry I caused some headaches. You can update PyPDF2 via: pip install PyPDF2 –upgrade solved No module named ‘PyPDF2._codecs’, even after already … Read more

[Solved] Renaming files that have specific format like text.* [closed]

You can use glob for get all files with pattern coord.* in your path and rename them with os.rename. import os import glob path=”Files/” for file in glob.glob(path+’coord.*’): f,s = file.split(‘.’,1) file_new = f+’N.’+s os.rename(file, file_new) First filenames: coord.1.txt coord.1.png After renaming: coordN.1.txt coordN.1.png 0 solved Renaming files that have specific format like text.* [closed]