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Merged
cclauss merged 3 commits into from
Oct 1, 2023
Merged

Add missing number algorithm #9203

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156630f
Merge pull request #1 from TheAlgorithms/master
shreyabhalgat Oct 1, 2023
f94b52f
Added missing_number algorithm using bit manipulation
shreyabhalgat Oct 1, 2023
1a20752
Update bit_manipulation/missing_number.py
cclauss Oct 1, 2023
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Added missing_number algorithm using bit manipulation
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@shreyabhalgat
shreyabhalgat committed Oct 1, 2023
commit f94b52fd0afe1fbb4e1d60e7ea10877a073715f3
21 changes: 21 additions & 0 deletions bit_manipulation/missing_number.py
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def find_missing_number(nums):
"""
Finds the missing number in a list of consecutive integers.

Args:
nums (List[int]): A list of integers.

Returns:
int: The missing number.
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@cclauss cclauss Oct 1, 2023 •
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Mypy can test data types in the function signature, but not in the comments.

Do not repeat the datatypes in both places because readers will be confused if one is changed and the other is not.

Suggested change
def find_missing_number(nums):
"""
Finds the missing number in a list of consecutive integers.
Args:
nums (List[int]): A list of integers.
Returns:
int: The missing number.
def find_missing_number(nums: list[int]) -> int:
"""
Finds the missing number in a list of consecutive integers.
Args:
nums: A list of integers.
Returns:
The missing number.


Example:
>>> find_missing_number([0, 1, 3, 4])
2
"""
n = len(nums)
missing_number = n

for i in range(n):
missing_number ^= i ^ nums[i]

return missing_number