Leetcode 751. IP to CIDR
Given a start IPv4 address and a number of consecutive addresses, produce the minimal list of CIDR blocks that exactly cover that range. The key challenge is using 32-bit alignment and powers-of-two block sizes (via bitwise/trailing-zero logic) to greedily choose the largest aligned CIDR at each step.
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Databricks
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Late May, 2026
Databricks
Senior
Late May, 2026
Databricks
Senior
Same as other poster
Mid May, 2026
Databricks
Senior
You're implementing a rule-based IPv4 firewall. Given an ordered list of rules (ALLOW or DENY) where each rule is either a single IP or a CIDR block, determine if a target IP should be allowed. Only the first matching rule applies. https://leetcode.com/problems/ip-to-cidr/description/
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