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Daily-Coding-Problem

Solving 1 interview coding problem everyday

S.no Problem Solution
1 Find if there is a pair with target sum in an array HasTargetSumPair.java
2 Return an array with each element as product of all elements except self ProductOfAllExceptSelf.java
3 Get lowest positive integer not present in array LowestPositiveIntegerNotInArray.java
4 Find number of ways to climb a staircase ClimbStaircase.java
5 Find longest substring with atmost k unique characters LongestSubstringWithKDistinct.java
6 Find Minimum Rooms Required FindMinimumRoomsRequired.java
7 Invert A Binary Tree InvertBinaryTree.java
8 Binary Tree Boustrophedon Order BinaryTreeBoustrophedonOrder.java
9 Sentence Checker SentenceChecker.java
10 Get Alternating Linked List Order GetAlternatingLinkedListOrder.java
11 Serialize & Deserialize A Binary Tree SerializeDeserializeTree.java
12 Find first missing positive integer FindFirstMissingPositiveInteger.java
13 Longest Substring Without Repeating Characters LongestSubstringWithoutRepeatingCharacter.java
14 Longest Palindromic Substring LongestPalindromicSubstring.java
15 Validate Balanced Parentheses ValidateBalancedParentheses.java
16 First and Last Indices of an Element in a Sorted Array FirstAndLastIndexOfElementInSortedArray.java