Pattern

K-way Merge

3 problems in the roadmap use this pattern.

• Design Twitter Medium

  in Heaps / Priority Queue

  Reported at: GoogleAmazonWalmart Global Tech
• Find K Pairs with Smallest Sums Medium

  in Heaps / Priority Queue

  Reported at: AppleAmazonLinkedIn+1
• Smallest Range Covering Elements from K Lists Hard

  in Heaps / Priority Queue