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How to Solve Number of Students Unable to Eat Lunch Problem
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LeetCode ProblemNumber of Students Unable to Eat Lunch
The school cafeteria offers circular and square sandwiches at lunch break, referred to by numbers 0 and 1 respectively. All students stand in a queue. Each student either prefers square or circular sandwiches. The number of sandwiches in the cafeteria is equal to the number of students. The sandwiches are placed in a stack. At each step: This continues until none of the queue students want to take the top sandwich and are thus unable to eat. You are given two integer arrays students and sandwiches where sandwiches[i] is the type of the ith sandwich in the stack (i = 0 is the top of the stack) and students[j] is the preference of the jth student in the initial queue (j = 0 is the front of the queue). Return the number of students that are unable to eat.
ArrayStackQueueSimulation
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Problem Breakdown
Understanding the Number of Students Unable to Eat Lunch Problem
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Problem Statement
The school cafeteria offers circular and square sandwiches at lunch break, referred to by numbers 0 and 1 respectively. All students stand in a queue. Each student either prefers square or circular sandwiches. The number of sandwiches in the cafeteria is equal to the number of students. The sandwiches are placed in a stack. At each step: This continues until none of the queue students want to take the top sandwich and are thus unable to eat. You are given two integer arrays students and sandwiches where sandwiches[i] is the type of the ith sandwich in the stack (i = 0 is the top of the stack) and students[j] is the preference of the jth student in the initial queue (j = 0 is the front of the queue). Return the number of students that are unable to eat.
EasyProblem #1700
LeetCodeNumber of Students Unable to Eat Lunch
Related Topics
ArrayStackQueueSimulation
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Examples
# Example 1
Input
students = [1,1,0,0], sandwiches = [0,1,0,1]
Output
0
# Example 2
Input
students = [1,1,1,0,0,1], sandwiches = [1,0,0,0,1,1]
Output
3
Constraints
1 <= students.length, sandwiches.length <= 100
students.length == sandwiches.length
sandwiches[i] is 0 or 1.
students[i] is 0 or 1.
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Solve Number of Students Unable to Eat Lunch — The school cafeteria offers circular and square sandwiches at lunch break, refer...
Here's the optimal approach using Array:
def solve(input):
# Optimal O(n) solution
return result
Time: O(n) | Space: O(n)
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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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