67. Add Binary
Given two binary strings a and b, return their sum as a binary string. Example 1: Input: a = "11", b = "1" Output: "100" Example 2: Input: a = "1010", b = "1011" Output: "10101" Constraints: - 1 <= a.length, b.length <= 104 - a and b consist only of '0' or '1' characters. - Each string does not contain leading zeros except for the zero itself.
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solution.cppC++17
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