Problems # Title Likes 21 Negate a number using addition operator 0 22 Determine if given strings are isomorphic 0 23 Find consecutive segments in an sorted array 0 24 Rearrange characters in a string so that no character repeats consecutively. 0 25 Print half pyramids using * as shown 0 26 Create a minimal height binary search tree from given sorted array of unique integers 0 27 Create a binary search tree in javascript 0 28 Create a simple queue using javascript 0 29 Implement a stack using javascript 0 30 Given a singly linked list find if it is palindrome 0 31 Partition a linked list around a value 0 32 Delete a node from a linked list in javascript 0 33 Remove duplicates from an unsorted linked list 0 34 Javascript linked list example 0 35 Find all the prime factors for the given number 0 36 Check if an element exists in an array, based on that update an array 0 37 Determine character frequency in the given string 0 38 Convert the given array of elements to a string 0 39 Remove duplicates from the given array 0 40 Filter and sort the given array 0 Negate a number using addition operator Determine if given strings are isomorphic Find consecutive segments in an sorted array Rearrange characters in a string so that no character repeats consecutively. Print half pyramids using * as shown Create a minimal height binary search tree from given sorted array of unique integers Create a binary search tree in javascript Create a simple queue using javascript Implement a stack using javascript Given a singly linked list find if it is palindrome Partition a linked list around a value Delete a node from a linked list in javascript Remove duplicates from an unsorted linked list Javascript linked list example Find all the prime factors for the given number Check if an element exists in an array, based on that update an array Determine character frequency in the given string Convert the given array of elements to a string Remove duplicates from the given array Filter and sort the given array 1 2 3