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How to Solve Smallest Divisible Digit Product II Problem
Master the Smallest Divisible Digit Product II LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
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LeetCode ProblemSmallest Divisible Digit Product II
You are given a string num which represents a positive integer, and an integer t. A number is called zero-free if none of its digits are 0. Return a string representing the smallest zero-free number greater than or equal to num such that the product of its digits is divisible by t. If no such number exists, return "-1".
MathStringBacktrackingGreedyNumber Theory
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Problem Breakdown
Understanding the Smallest Divisible Digit Product II Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
You are given a string num which represents a positive integer, and an integer t. A number is called zero-free if none of its digits are 0. Return a string representing the smallest zero-free number greater than or equal to num such that the product of its digits is divisible by t. If no such number exists, return "-1".
HardProblem #3348
LeetCodeSmallest Divisible Digit Product II
Related Topics
MathStringBacktrackingGreedyNumber Theory
How Phantom Code Helps
Get real-time assistance for Smallest Divisible Digit Product II problems during coding interviews. Phantom Code provides instant solutions and explanations.
Examples
# Example 1
Input
num = "1234", t = 256
Output
"1488"
# Example 2
Input
num = "12355", t = 50
Output
"12355"
# Example 3
Input
num = "11111", t = 26
Output
"-1"
Constraints
2 <= num.length <= 2 * 105
num consists only of digits in the range ['0', '9'].
num does not contain leading zeros.
1 <= t <= 1014
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Solve Smallest Divisible Digit Product II — You are given a string num which represents a positive integer, and an integer t...
Here's the optimal approach using Math:
def solve(input):
# Optimal O(n) solution
return result
Time: O(n) | Space: O(n)
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Frequently Asked Questions
Common questions about solving Smallest Divisible Digit Product II and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like Smallest Divisible Digit Product II during interviews?
Phantom Code generates complete solutions instantly with proper complexity analysis, letting you focus on explaining your approach and demonstrating problem-solving skills rather than getting stuck on implementation details during high-pressure situations.
What if the interviewer asks follow-up questions or modifications to problems like Smallest Divisible Digit Product II?
Phantom Code adapts in real-time. Screenshot the modified problem or use audio mode to capture the interviewer's follow-up, and get an updated solution within seconds — including edge cases and optimizations.
Can Phantom Code help me communicate my solution for problems like Smallest Divisible Digit Product II?
Yes. Phantom Code provides step-by-step approach explanations with 3 progressive thoughts, so you can walk through your solution naturally. It also provides time and space complexity analysis to discuss trade-offs.
How does Phantom Code assist with different programming languages for Smallest Divisible Digit Product II type problems?
Phantom Code supports 11 programming languages including Python, Java, C++, JavaScript, TypeScript, Go, Rust, Ruby, Swift, Kotlin, and C#. Set your preferred language and get idiomatic solutions.
What coding mistakes does Phantom Code help me avoid during Smallest Divisible Digit Product II interviews?
Phantom Code catches common mistakes like off-by-one errors, missing edge cases, incorrect base conditions, and suboptimal approaches. It provides clean, well-structured code that handles all edge cases.
Is Phantom Code detectable when solving problems like Smallest Divisible Digit Product II during live interviews?
No. Phantom Code runs as an invisible desktop overlay that doesn't appear in screen shares, recordings, or proctoring software. It works with Zoom, HackerRank, CodeSignal, CoderPad, and all major platforms.
How does Phantom Code help when I'm struggling with Smallest Divisible Digit Product II style questions under pressure?
The AI provides structured guidance: first the approach (what algorithm/data structure to use and why), then the implementation with clean code, and finally complexity analysis. This helps you think clearly even under pressure.
Does Phantom Code work for the coding platforms used in Smallest Divisible Digit Product II interviews?
Yes. Phantom Code works with all major coding platforms including LeetCode, HackerRank, CodeSignal, CoderPad, HackerEarth, and any browser-based coding environment.
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