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How to Solve The Score of Students Solving Math Expression Problem
Master the The Score of Students Solving Math Expression LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
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LeetCode ProblemThe Score of Students Solving Math Expression
You are given a string s that contains digits 0-9, addition symbols '+', and multiplication symbols '*' only, representing a valid math expression of single digit numbers (e.g., 3+5*2). This expression was given to n elementary school students. The students were instructed to get the answer of the expression by following this order of operations: You are given an integer array answers of length n, which are the submitted answers of the students in no particular order. You are asked to grade the answers, by following these rules: Return the sum of the points of the students.
ArrayMathStringDynamic ProgrammingStackMemoization
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Problem Breakdown
Understanding the The Score of Students Solving Math Expression Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
You are given a string s that contains digits 0-9, addition symbols '+', and multiplication symbols '*' only, representing a valid math expression of single digit numbers (e.g., 3+5*2). This expression was given to n elementary school students. The students were instructed to get the answer of the expression by following this order of operations: You are given an integer array answers of length n, which are the submitted answers of the students in no particular order. You are asked to grade the answers, by following these rules: Return the sum of the points of the students.
HardProblem #2019
LeetCodeThe Score of Students Solving Math Expression
Related Topics
ArrayMathStringDynamic ProgrammingStackMemoization
How Phantom Code Helps
Get real-time assistance for The Score of Students Solving Math Expression problems during coding interviews. Phantom Code provides instant solutions and explanations.
Examples
# Example 1
Input
s = "7+3*1*2", answers = [20,13,42]
Output
7
# Example 2
Input
s = "3+5*2", answers = [13,0,10,13,13,16,16]
Output
19
# Example 3
Input
s = "6+0*1", answers = [12,9,6,4,8,6]
Output
10
Constraints
3 <= s.length <= 31
s represents a valid expression that contains only digits 0-9, '+', and '*' only.
All the integer operands in the expression are in the inclusive range [0, 9].
1 <= The count of all operators ('+' and '*') in the math expression <= 15
Test data are generated such that the correct answer of the expression is in the range of [0, 1000].
n == answers.length
1 <= n <= 104
0 <= answers[i] <= 1000
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Solve The Score of Students Solving Math Expression — You are given a string s that contains digits 0-9, addition symbols '+', and mul...
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def solve(input):
# Optimal O(n) solution
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Frequently Asked Questions
Common questions about solving The Score of Students Solving Math Expression and using Phantom Code during coding interviews.
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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.
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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.
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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.
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How does Phantom Code help when I'm struggling with The Score of Students Solving Math Expression 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.
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