Detect Capital Python Solution with Tests

LeetCode 520, Easy. Topics: String. View on LeetCode. Generate this problem as a practice environment: tested reference solution, 20 parametrized pytest cases, and a playground notebook:

lcpy gen -n 520   # by problem number
lcpy gen -s detect_capital   # by problem name

Problem

We define the usage of capitals in a word to be right when one of the following cases holds:

All letters in this word are capitals, like "USA".
All letters in this word are not capitals, like "leetcode".
Only the first letter in this word is capital, like "Google".

Given a string word, return true if the usage of capitals in it is right.

Examples

Input: word = "USA"
Output: true

Input: word = "FlaG"
Output: false

Constraints

1 <= word.length <= 100
word consists of lowercase and uppercase English letters.

Solution

Reference implementation from solution.py on GitHub, full suite in test_solution.py:

class Solution:
    # Time: O(n)
    # Space: O(1)
    def detect_capital_use(self, word: str) -> bool:
        return word.isupper() or word.islower() or word.istitle()

Complexity

Time	Space
O(n)	O(1)

Welcome

Getting Started

Practice

CLI

Catalog

Contributing

Troubleshooting

Detect Capital Python Solution with Tests

Problem

Examples

Constraints

Solution

Complexity

Tags

​Problem

​Examples

​Constraints

​Solution

​Complexity

​Tags

Problem

Examples

Constraints

Solution

Complexity

Tags