Java

Say you have an array of primitive integers and you want to remove all duplicates. You can find out how many non-duplicate integers are in… Read More »Remove Duplicates from Sorted Array in Java

The challenge Given an array arr, replace every element in that array with the greatest element among the elements to its right, and replace the last element with -1.… Read More »Replace Elements with Greatest Element on Right Side using Java

Introducing the problem Given an array A of integers, return true if and only if it is a valid mountain array. Recall that A is a mountain array if and… Read More »The Valid Mountain Array Problem using Java

The Challenge An encoded string S is given.  To find and write the decoded string to a tape, the encoded string is read one character at a time and the following… Read More »The Decoded String at Index using Java

In Java there are eight basic data types; which are: byte, short, int, long, float, double, boolean and char. It could realistically be said that… Read More »The Primary Data Types in Java

TLDR; Java has a few different ways of comparing variables and objects with one another. ==, equals(), compareTo() and compare(). Java provides various operators such… Read More »Comparing Objects in Java

As with many programming languages such as C, C++ and C# (known commonly as the C family), it is possible to “overload methods” (sometimes called… Read More »Overloading Operators in Java