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Monday, December 11, 2017

Finding Repeats in an Array or a List - Technical Interview in Python Patterns

Practice using Hash map.

def find_repeat(numbers):
seen = set()
for n in numbers:
if n in seen:
return n
else:
seen.add(n)
return False #if no duplicate found

Instead of returning False, you can also raise an exception. Use this:
raise Exception('custom exception message here')

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