Python Coding 면접 질문과 답변
Ques 6. Write a Python program to find the nth Fibonacci number.
def fibonacci(n):
if n <= 1:
return n
else:
return fibonacci(n-1) + fibonacci(n-2)
Example:
fibonacci(5) # Output: 5
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Ques 7. Implement a function to find the intersection of two lists.
def intersection(list1, list2):
return list(set(list1) & set(list2))
Example:
intersection([1, 2, 3], [2, 3, 4]) # Output: [2, 3]
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Ques 8. Write a Python program to perform matrix multiplication.
import numpy as np
matrix1 = np.array([[1, 2], [3, 4]])
matrix2 = np.array([[5, 6], [7, 8]])
result = np.dot(matrix1, matrix2)
Example:
print(result)
# Output: [[19, 22], [43, 50]]
# Output: [[19, 22], [43, 50]]
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Ques 9. Create a generator function to generate Fibonacci numbers.
def fibonacci_generator():
a, b = 0, 1
while True:
yield a
a, b = b, a + b
Example:
fib_gen = fibonacci_generator()
print(next(fib_gen)) # Output: 0
print(next(fib_gen)) # Output: 0
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Ques 10. Implement a depth-first search (DFS) algorithm for a graph.
def dfs(graph, node, visited):
if node not in visited:
print(node)
visited.add(node)
for neighbor in graph[node]:
dfs(graph, neighbor, visited)
Example:
graph = {1: [2, 3], 2: [4, 5], 3: [6], 4: [], 5: [], 6: []}
visited_set = set()
dfs(graph, 1, visited_set)
visited_set = set()
dfs(graph, 1, visited_set)
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