Problems | K5kC | Code & More

All Topics Algorithms Backend
Design Concurrency Database Database
Design Java Javascript Object Oriented
Design Programming
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Title	Difficulty	Companies	Videos
Order-agnostic Binary Search on Sorted Array	Medium
Unique BSTs 3 - Count given node keys between m and n	Medium
Check if an Array of Integers is Sorted	Easy
Count frequency of target element in sorted array	Medium
Count number of bits to be flipped to convert A to B	Easy
Determine if a string has all unique characters	Medium
Find floor of target element in a sorted array	Medium
Find the nearest numbers that have same number of 1s for an integer	Medium
Implement selection sort on stack	Medium
List Combinations - Generate unique combinations from list selecting 1 element from each	Medium
Longest Substring with K Distinct Characters	Medium	google
Maximum Pairwise Product 1 - Given only Positive Integers	Easy
Remove duplicates from an unsorted linked list keeping only one instance	Easy
Replace all spaces in c-style string with '%20'	Medium
Rotate String	Easy	amazon apple ebay google linkedin microsoft oracle
Set all bits of a number in a range equal to another number	Medium
Swap odd and even bits in an integer	Medium	cisco
Find smallest letter greater than target in a sorted array of letters	Easy	linkedin
Find Common Elements in Two Sorted Linked Lists	Medium
Find last modular node in linked list for given k	Medium
Check if the length of a linked list is even or odd	Medium
Array-based Trie Implementation