easyGrind 75
Add Binary
Given two binary strings a and b Return their sum as a binary string Example: a = "11", b = "1" => "100" Example: a = "1010", b = "1011" => "10101"
This is a string problem that rewards careful parsing and strong edge-case instincts. It's a great warm-up that builds rule-based parsing without a ton of moving parts. The trap is hidden edge cases—empty input, repeated characters, and boundary indexing.
StringMath & GeometryBit ManipulationSimulation
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1Add Two Binary Stringseasy
Based onLeetCode