| Medium | Rearrange an array in order – smallest, largest, 2nd smallest, 2nd largest | Amazon Citadel Expedia GE Healthcare Qualcomm Qualtrics Twilio Yatra | sorting |
| Medium | Wiggle Sort | PayPal | sorting |
| Medium | Merge Sort | Amazon Apple Boomerang Commerce Goldman Sachs Grofers Microsoft Oracle Paytm Qualcomm Snapdeal | sorting |
| Medium | Topological Sorting | Accolite Amazon Flipkart Microsoft Moonfrog Labs Morgan Stanley OYO Rooms Samsung | sorting |
| Medium | Insertion Sort | Accenture Cisco Dell Grofers Juniper Networks MAQ Veritas | sorting |
| Medium | Quick Sort | Adobe Goldman Sachs HSBC Qualcomm Samsung SAP SAP Labs | sorting |