1) 55 Solution: Short Encoding of Words (ver. 2) 50 Solution: Missing Number 51 Solution: Intersection of Two Linked Lists 52 Solution: Average of Levels in Binary Tree 53 Solution: Short Encoding of Words (ver. 2) 46 Solution: Maximum Frequency Stack 47 Solution: Distribute Candies 48 Solution: Set Mismatch (ver. 1) 45 Solution: Divide Two Integers (ver. 2) 32 Solution: Letter Case Permutation 33 Solution: Container With Most Water 34 Solution: Arithmetic Slices 35 Solution: Minimum Remove to Make Valid Parentheses 36 Solution: Roman to Integer 37 Solution: Broken Calculator 38 Solution: Find the Most Competitive Subsequence 39 Solution: Longest Word in Dictionary through Deleting 40 Solution: Search a 2D Matrix II 41 Solution: Score of Parentheses 42 Solution: Shortest Unsorted Continuous Subarray 43 Solution: Validate Stack Sequences 44 Solution: Divide Two Integers (ver. 1) 31 Solution: The K Weakest Rows in a Matrix (ver. 2) 29 Solution: Sort the Matrix Diagonally 30 Solution: The K Weakest Rows in a Matrix (ver. 1) 28 Solution: Maximum Score From Removing Substrings (ver. 3 Leetcode Solutions Index 4 Solution: Minimize Deviation in Array 5 Solution: Vertical Order Traversal of a Binary Tree 6 Solution: Count Ways to Make Array With Product 7 Solution: Smallest String With A Given Numeric Value 8 Solution: Linked List Cycle 9 Solution: Path With Minimum Effort 10 Solution: Concatenation of Consecutive Binary Numbers 11 Solution: Minimum Operations to Make a Subsequence 12 Solution: Longest Harmonious Subsequence 13 Solution: Simplify Path 14 Solution: Building Boxes 15 Solution: Decode XORed Permutation 16 Solution: Binary Tree Right Side View 17 Solution: Find Kth Largest XOR Coordinate Value 18 Solution: Change Minimum Characters to Satisfy One of Three Conditions 19 Solution: Shortest Distance to a Character 20 Solution: Peeking Iterator 21 Solution: Convert BST to Greater Tree 22 Solution: Copy List with Random Pointer 23 Solution: Valid Anagram 24 Solution: Number of Steps to Reduce a Number to Zero 25 Solution: Shortest Path in Binary Matrix 26 Solution: Is Graph Bipartite? 27 Solution: Maximum Score From Removing Substrings (ver. While ((crunchifyLine = crunchifyBufferReader.1 Solution: Next Permutation 2 Solution: Trim a Binary Search Tree. HashSet crunchifyAllLines = new HashSet() ĬrunchifyBufferReader = new BufferedReader(new FileReader(crunchif圜SVFile)) It makes no guarantees as to the iteration order of the set in particular, it does not guarantee that the order will This class implements the Set interface, backed by a hash table (actually a HashMap instance). efficient reading of characters, arrays, and lines.īufferedReader crunchifyBufferReader = null Reads text from a character-input stream, buffering characters so as to provide for the String crunchif圜SVFile = "/Users/Shared/crunchify.csv"
DELETE DUPLICACY IN STRING IN JAVA HOW TO
* How to Remove Duplicate Elements from CSV file in Java?
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More formally, adds the specified element e to this set if this set contains no element e2 such that Objects.equals(e, e2).
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Adds the specified element to this set if it is not already present.Use method add() to check if line already present in Set or not.
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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. HashSet class implements the Set interface, backed by a hash table (actually a HashMap instance).We are using BufferedReader to read files.Let’s get started: Step-1.Ĭreate file CrunchifyFindDuplicateCSV.java Step-2. In this tutorial we will go over steps on how to remove duplicates from a CSV file and any other file.
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But sometime in an interview question, folks sometimes get very confused about the method they have to use. Finding a duplicate lines from a file is not a hard problem.