Five pirates having 100 gold coins in a ship – puzzle (Logical question)
Logical Question/ Puzzle: Five pirates & 100 gold coins in a ship Five pirates say P1 to P5 (youngest to […]
Farmer, fox, goose & bean bag (river crossing puzzle/ logical problem)
1. Problem Statement or Puzzle: Farmer standing on the bank of river and want to cross the river. Boat has
Find min races required: 25 horses, 5 tracks, 3 fastest horses puzzle
25 horses, 5 tracks & 3 fastest horses puzzle Given 25 horses and a racing track. 5 horses can run simultaneously
Four person crossing collapsing bridge & Torch puzzle
Four person crossing collapsing bridge & torch puzzle: Four persons wants to cross a bridge at night. There is one
Find a box of defective balls puzzle (Logical Interview question)
Question: box of defective balls puzzle or logical interview question You are given 10 boxes containing balls. The 9 boxes
Three Ants on Equilateral Triangle Puzzle
Ants on equilateral triangle puzzle: Three ants are sitting on the corners of equilateral triangle. Ants can pick any direction
Calculate lose: lady, shopKeeper & fake note puzzle
Lady, shopKeeper & 1000$ fake note puzzle Shopkeeper A is selling the goods at no profit no loss (zero profit).
Gold bar & seven working days payment (logical interview question/puzzle)
GoldBar work payment logical interview question or puzzle: Given a gold bar that will be used to make a payment to a worker for seven days.
Sort user defined objects in TreeSet (using Comparable)
Elements in TreeSet are ordered using natural order or Comparator/Comparable interface. In case of user defined objects or POJO, POJO needs
Sort user defined objects using TreeSet in java (Comparator interface)
What is TreeSet? TreeSet is a NavigableSet implementation based on a TreeMap. Elements in TreeSet are ordered using natural order
What is TreeSet collection in java (class hierarchy & example)
1. What is TreeSet colletion in java ? Elements in TreeSet are ordered using natural order or Comparator provided. e.g.
Convert LinkedHashSet collection of String objects to Array in java (example)
Hashtable and linked list implementation of the Set interface, with predictable iteration order. LinkedHashSet maintains the Insertion order of elements
Convert LinkedHashSet of String objects to ArrayList collection (java/ example)
LinkedHashSet is Hashtable & linked list implementation of the Set interface, with predictable iteration order. LinkedHashSet maintains the Insertion order
Iterate or loop LinkedHashSet collection of String objects (java8/example)
Iterate or loop through the LinkedHashSet collection of string objects using iterator & foreach java 8 lambda streams (example)
Convert LinkedHashSet of String objects to TreeSet collection (java/ example)
LinkedHashSet is Hashtable & linked list implementation of the Set interface, with predictable iteration order. LinkedHashSet maintains the Insertion order
What is LinkedHashSet collection in java (class hierarchy & example)
Hashtable and linked list implementation of the Set interface, with predictable iteration order. LinkedHashSet maintains the Insertion order of elements
Convert HashSet of string to Array in java (example)
HashSet class implements the Set interface, backed by a hash table. HashSet contains the unique elements. HashSet does not contains
Convert HashSet of String objects to ArrayList in java (example)
Given a HashSet containing String objects in java. HashSet will be containing Sport’s name. Convert HashSet <String> to ArrayList<String> in
Iterate/loop elements/string objects of HashSet collection in java8 (example)
HashSet class implements the Set interface, backed by a hash table. HashSet contains the unique elements. HashSet does not contains
Convert HashSet to TreeSet in java (example)
What is HashSet in java? HashSet class implements the Set interface, backed by a hash table. HashSet contains the unique
What is HashSet collection in java (class hierarchy & example)
1. What is HashSet collection in java? HashSet class implements the Set interface, backed by a hash table. HashSet contains
Iterate or loop EnumMap using entrySet & forEach Java 8 (example)
Given an EnumMap containing key value pairs in java. EnumMap is specialized Map implementation, to use enum as key(s). Enum
Iterate/ loop TreeMap collection of String Objects before & after java8 (example)
1. What is TreeMap collection in java? Given a TreeMap collection containing key value pairs. TreeeMap is Red-Black tree based
Create least recently used (LRU) cache in java using LinkedHashMap
LRU is one of the most popular caching algorithm. The items, which are least recently used are removed from the
Access order in LinkedHashMap using java (with example)
LinkedHashMap have following attributes: LinkedHashMap is Hashtable and LinkedList based implementation of Map interface. By default LinkedHashMap maintains the insertion order (i.e.
Insertion order in LinkedHashMap using java (with example)
LinkedHashMap has following attributes. LinkedHashMap maintains the insertion order. The default mode is insertion order. The order in which elements are
Put,Remove,Sort,iterate,Get methods of HashMap (example)
Given a HashMap, we will take an example to demonstrate Put,Remove,Sort, Iterate,Get,Contains, Clear etc. methods of HashMap.
putIfAbsent method of HashMap in java (with example)
HashMap is Hash table based implementation of the Map interface. HashMap provides constant-time performance for the basic operations (get and put). HashMap based
Sort HashMap by keys in java (ascending & descending order)
What is HashMap in java? HashMap is Hash table based implementation of the Map interface. HashMap provides constant-time performance for the basic operations
Remove elements/string objects from HashMap collection by key (Java/example)
HashMap is Hash table based implementation of the Map interface. HashMap provides constant-time performance for the basic operations like get & put. HashMap