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Title	Difficulty	Companies
Subtract using plus operator only	Easy
Swap bits at position i and j	Easy
Swap Nibbles in a Byte	Easy
Tetranacci Numbers	Easy
Third Maximum Number	Easy	amazon bloomberg facebook google microsoft
Toggle a specified bit in a bit string without effecting other bits	Easy
Toggle the n-th bit	Easy
Turn off the rightmost 1-bit	Easy
Turn on the rightmost 0-bit	Easy
Turning a bit off without affecting other bits	Easy
Twitter Codility Problem - Max Binary Gap	Easy
Uniform Cost Search	Easy
Well-Ordered Permutations of a String	Easy
Longest Unequal Adjacent Groups Subsequence I	Easy
Finding 3-Digit Even Numbers	Easy
Count Largest Group	Easy
Count Equal and Divisible Pairs in an Array	Easy
Count Good Triplets	Easy	turvo
Smallest positive integer that cannot be represented as the sum of a subset of a sorted array	Easy	amazon
Find the nth sevenish number	Easy	zillow
Count Subarrays of Length Three With a Condition	Easy
Minimum Operations to Make Array Values Equal to K	Easy
Build Array from Permutation	Easy
Type of Triangle	Easy
Minimum Number of Operations to Make Elements in Array Distinct	Easy
Maximum Value of an Ordered Triplet I	Easy
Minimum in a Binary Tree	Easy
Divide Array Into Equal Pairs	Easy
Maximum Count of Positive Integer and Negative Integer	Easy
Find Missing and Repeated Values	Easy
Merge Two 2D Arrays by Summing Values	Easy
Apply Operations to an Array	Easy
Length of the Longest Consecutive 1s in Binary Representation	Easy	stripe
Collatz Sequence	Easy	apple
Clear Digits	Easy
Maximum Ascending Subarray Sum	Easy
Permutation of Array using given order	Easy	twitter
Next Permutation of Integer	Easy	ibm
Longest Strictly Increasing or Strictly Decreasing Subarray	Easy
Check if Array Is Sorted and Rotated	Easy
Longest subarray with distinct elements	Easy	google
Check if any pair of rectangles overlap	Easy	google
Area of intersection of two rectangles	Easy	google
Run a Markov chain and count state visits	Easy	google
Flatten a nested dictionary	Easy	stripe
Busiest period in a building	Easy	amazon
Decode Base64 String to Hex	Easy	google
Convert Hex String to Base64	Easy	paypal
Find Closest Coin by Manhattan Distance	Easy	google
Count Digits Without Loops	Easy	amazon