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How to Solve Minimum Number of Frogs Croaking Problem
Master the Minimum Number of Frogs Croaking LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
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Start Free for WindowsMedium#1419
LeetCode ProblemMinimum Number of Frogs Croaking
You are given the string croakOfFrogs, which represents a combination of the string "croak" from different frogs, that is, multiple frogs can croak at the same time, so multiple "croak" are mixed. Return the minimum number of different frogs to finish all the croaks in the given string. A valid "croak" means a frog is printing five letters 'c', 'r', 'o', 'a', and 'k' sequentially. The frogs have to print all five letters to finish a croak. If the given string is not a combination of a valid "croak" return -1.
StringCounting
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Problem Breakdown
Understanding the Minimum Number of Frogs Croaking Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
You are given the string croakOfFrogs, which represents a combination of the string "croak" from different frogs, that is, multiple frogs can croak at the same time, so multiple "croak" are mixed. Return the minimum number of different frogs to finish all the croaks in the given string. A valid "croak" means a frog is printing five letters 'c', 'r', 'o', 'a', and 'k' sequentially. The frogs have to print all five letters to finish a croak. If the given string is not a combination of a valid "croak" return -1.
MediumProblem #1419
LeetCodeMinimum Number of Frogs Croaking
Related Topics
StringCounting
How Phantom Code Helps
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Examples
# Example 1
Input
croakOfFrogs = "croakcroak"
Output
1
# Example 2
Input
croakOfFrogs = "crcoakroak"
Output
2
# Example 3
Input
croakOfFrogs = "croakcrook"
Output
-1
Constraints
1 <= croakOfFrogs.length <= 105
croakOfFrogs is either 'c', 'r', 'o', 'a', or 'k'.
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Solve Minimum Number of Frogs Croaking — You are given the string croakOfFrogs, which represents a combination of the str...
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def solve(input):
# Optimal O(n) solution
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Time: O(n) | Space: O(n)
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Frequently Asked Questions
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How does Phantom Code help me solve coding problems like Minimum Number of Frogs Croaking during interviews?
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What coding mistakes does Phantom Code help me avoid during Minimum Number of Frogs Croaking 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 Minimum Number of Frogs Croaking during live interviews?
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How does Phantom Code help when I'm struggling with Minimum Number of Frogs Croaking 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 Minimum Number of Frogs Croaking 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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