string modifying methods
Method | Description | Examples | Results |
replace('a', 'b') | Replaces all the occurrences of a with b | 'Abcde'.replace('A', 'B')
'ABBA'.replace('A', 'B')
'ABBA'.replace('AB', 'C') | Bbcde
BBBB
CBA |
strip() | Removes whitespace from both ends | ' Hi Bob '.strip() | Hi Bob |
lstrip() | Removes whitespace from the beginning | ' Hi Bob '.lstrip() | Hi Bob |
rstrip() | Removes whitespace from the end | ' Hi Bob '.rstrip() | Hi Bob |
removeprefix('a') | Removes the specified prefix if it’s present | 'Hi Bob!'.removeprefix('Hi')
'Hi Bob!'.removeprefix('hi') | Bob!
Hi Bob! |
removesuffix('a') | Removes the specified suffix if it’s present | 'Hi Bob!'.removesuffix('!')
'Hi Bob?'.removesuffix('!') | Hi Bob
Hi Bob? |
The methods
replace and strip are very popular and are used pretty often in real-life programs.Challenge
Each gene's code uses the four nucleotide bases of DNA: adenine (A), cytosine (C), guanine (G), and thymine (T). We don’t like abbreviations, so we would like to expand these abstractions any time we find those in the text. Given a text with abstractions including
A, C, G, and T, expand those into their actual names.The input contains a single line with text with abbreviations.
The program should print the same text with expanded abstractions in the output.
Input | Output |
Each gene's code uses the four nucleotide bases of dna: A, C, G, and T | Each gene's code uses the four nucleotide bases of dna: adenine, cytosine, guanine, and thymine |
Constraints
Time limit: 2 seconds
Memory limit: 512 MB
Output limit: 1 MB