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https://docs.python.org/3/library/itertools.html itertools — Functions creating iterators for efficient looping — Python 3.7.4 documentation docs.python.org

Class Integer https://docs.oracle.com/javase/8/docs/api/?java/lang/Integer.html Java Platform SE 8 docs.oracle.com

Class ArrayList https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html ArrayList (Java Platform SE 8 ) Resizable-array implementation of the List interface. Implements all optional list operations, and permits all elements, including null. In addition to implementing the List interface, this class provides methods to manipulate the size of the array that is docs.oracle.com

[Java] Class BigInteger https://docs.oracle.com/javase/7/docs/api/java/math/BigInteger.html BigInteger (Java Platform SE 7 ) Immutable arbitrary-precision integers. All operations behave as if BigIntegers were represented in two's-complement notation (like Java's primitive integer types). BigInteger provides analogues to all of Java's primitive integer operators, and all relevan docs.oracle.com

Class HashSet https://docs.oracle.com/javase/7/docs/api/java/util/HashSet.html HashSet (Java Platform SE 7 ) This class implements the Set interface, backed by a hash table (actually a HashMap instance). It makes no guarantees as to the iteration order of the set; in particular, it does not guarantee that the order will remain constant over time. This class permi docs.oracle.com

[Java] Class Collections https://docs.oracle.com/javase/7/docs/api/java/util/Collections.html Collections (Java Platform SE 7 ) Rotates the elements in the specified list by the specified distance. After calling this method, the element at index i will be the element previously at index (i - distance) mod list.size(), for all values of i between 0 and list.size()-1, inclusive. (Thi docs.oracle.c..

[Java] conversion https://www.javatpoint.com/java-string-to-int Java Convert String to int - javatpoint Java Convert String to int example and examples of string to double, int to string, string to date, date to string, string to long, long to string, string to char, char to string, int to long, long to int etc. www.javatpoint.com https://beginnersbook.com/2013/12/how-to-convert-string-to-int-in..

Python 3.7 Built-in Functions https://docs.python.org/3.7/library/functions.html Built-in Functions — Python 3.7.3 documentation Built-in Functions The Python interpreter has a number of functions and types built into it that are always available. They are listed here in alphabetical order. abs(x) Return the absolute value of a number. The argument may be an integer or a floating po docs.python...