The String struct doesn’t provide a count or length property or method to count the number of characters it contains. Instead a global countElements<T>() function is available. When applied to strings, what’s the complexity of the countElements function:
O(1)
O(n)
and why?
Answer / iosraj
Swift strings support extended grapheme clusters. Each character stored in a string is a sequence of one or more unicode scalars that, when combined, produce a single human readable character. Since different characters can require different amounts of memory, and considering that an extreme grapheme cluster must be accessed sequentially in order to determine which character it represents, it’s not possible to know the number of characters contained in a string upfront, without traversing the entire string. For that reason, the complexity of the countElements function is O(n).
Is This Answer Correct ? | 0 Yes | 0 No |
What is the difference between swift and ‘objective-c’ language?
Which banks use swift?
what are functions different from methods?
What are the advantages of swift?
How do you make a bridging header in swift?
Explain how multiple line comment can be written in swift?
What are jsonencoder and jsondecoder?
What are the control transfer statements in swift?
What is the full meaning of swift?
What are type methods in swift?
What is init() in swift?
How can you define a base class in swift?