Medium
Quiz
#43 Multiply Strings
APPROACH
Two non-negative integers num1 and num2 are provided as strings. Compute and return their product as a string. BigInteger libraries and direct integer conversion are not permitted.
Example 1:
Input: num1 = "2", num2 = "3"
Output: "6"
Example 2:
Input: num1 = "123", num2 = "456"
Output: "56088"
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What is the optimal approach for this problem?