Given two non-negative integers num1 and num2 represented as strings, return the product of num1 and num2, also represented as a string. You must not use any built-in BigInteger library or convert the inputs to integer directly.
30:00
Java
Multiply Strings
medium
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Given two non-negative integers num1 and num2 represented as strings, return the product of num1 and num2, also represented as a string. You must not use any built-in BigInteger library or convert the inputs to integer directly.
Example 1:
Input: {"num1":"123","num2":"456"}
Output: 56088
Constraints:
1≤num1.length,num2.length≤200
num1 and num2 consist of digits only.
Both num1 and num2 do not contain any leading zeros, except the number 0 itself.
Do not use any built-in BigInteger library or convert the inputs to integers directly.