| Pyramid Transition Matrix | Medium | airbnb
amazon
google | |
| Queens That Can Attack the King | Medium | medianet | |
| Queries on a Permutation With Key | Medium | amazon | |
| Queries on Number of Points Inside a Circle | Medium | | |
| Range Product Queries of Powers | Medium | | |
| Reach a Number | Medium | inmobi
flipkart | |
| Reachable Nodes With Restrictions | Medium | | |
| Rearrange Array to Maximize Prefix Score | Medium | | |
| Rearrange Characters to Make Target String | Easy | | |
| Rearrange K Substrings to Form Target String | Medium | | |
| Rearrange Spaces Between Words | Easy | | |
| Rearrange Words in a Sentence | Medium | expedia | |
| Rearranging Fruits | Hard | | |
| Redistribute Characters to Make All Strings Equal | Easy | | |
| Reduction Operations to Make the Array Elements Equal | Medium | | |
| Reformat Date | Easy | twilio | |
| Reformat Phone Number | Easy | | |
| Reformat The String | Easy | microsoft | |
| Relocate Marbles | Medium | | |
| Remove Methods From Project | Medium | | |
| Remove Zero Sum Consecutive Nodes from Linked List | Medium | uber
amazon | |
| Removing Minimum Number of Magic Beans | Medium | | |
| Rename Columns | Easy | | |
| Replace All ?'s to Avoid Consecutive Repeating Characters | Easy | | |
| Replace All Digits with Characters | Easy | | |
| Replace Non-Coprime Numbers in Array | Hard | | |
| Reshape Data- Concatenate | Easy | | |
| Reshape Data- Melt | Easy | | |
| Reshape the Matrix | Easy | mathworks | |
| Reveal Cards In Increasing Order | Medium | google
microsoft | |
| Reverse Subarray To Maximize Array Value | Hard | codenation | |
| Right Triangles | Medium | | |
| Rings and Rods | Easy | | |
| Robot Collisions | Hard | | |
| Robot Return to Origin | Easy | amazon
goldman-sachs
google | |
| Running Sum of 1d Array | Easy | bloomberg
google | |
| Select Cells in Grid With Maximum Score | Hard | | |
| Self Dividing Numbers | Easy | adobe
epic-systems
tesla | |
| Semi-Ordered Permutation | Easy | | |
| Sequential Digits | Medium | f5-networks | |
| Shift Distance Between Two Strings | Medium | | |
| Shifting Letters | Medium | facebook | |
| Shortest Distance After Road Addition Queries II | Hard | | |
| Shortest Impossible Sequence of Rolls | Hard | | |
| Shortest String That Contains Three Strings | Medium | | |
| Shortest Subarray With OR at Least K I | Easy | | |
| Shortest Uncommon Substring in an Array | Medium | | |
| Shuffle String | Easy | facebook
microsoft | |
| Simple Bank System | Medium | | |
| Simplified Fractions | Medium | google | |