EnumSet is one of the specialized Set interface implementation for use with enum types which was introduced in Java 1.5. Many don’t know the purpose or unware of this implementation and end up in storing Enum data in to common… Read More!
Given an input string, the goal is to remove duplicate characters from a string and the output string should have the resultant string without modifying the order of characters in the original string. Let’s solve the above problem in O(n)… Read More!
Given an input array of integers, your goal is to remove duplicates present from an sorted array in O(n) time by method 1: using extra space i.e., O(n) space and by method 2: using constant space i.e., O(1) space. Method 1:… Read More!
Given an input array of integers, your goal is to find the duplicates present in the array in an effective way using Java Collections HashSet and HashMap. Note, you need to achieve this in O(n) time i.e., you should be able to… Read More!
Given an input array of integers, your goal is to find the numbers repeated or duplicates present in the array in an effective way without using Java Collections. Note, you need to achieve this in O(n) time i.e., you should… Read More!
