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How to find time complexity of an algorithm
...chine instructions it will execute as a function of the size of its input, and then simplify the expression to the largest (when N is very large) term and can include any simplifying constant factor.
For example, lets see how we simplify 2N + 2 machine instructions to describe this as just O(N).
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Difference between Big-O and Little-O Notation
What is the difference between Big-O notation O(n) and Little-O notation o(n) ?
4 Answers
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What is the difference between Cygwin and MinGW?
I want to make my C++ project cross platform, and I'm considering using Cygwin/MinGW.
But what is the difference between them ?
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Is a Java hashmap search really O(1)?
I've seen some interesting claims on SO re Java hashmaps and their O(1) lookup time. Can someone explain why this is so? Unless these hashmaps are vastly different from any of the hashing algorithms I was bought up on, there must always exist a dataset that contains collisions.
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How to access command line parameters?
The Rust tutorial does not explain how to take parameters from the command line. fn main() is only shown with an empty parameter list in all examples.
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What is the difference between lower bound and tight bound?
...the upper bound, while Omega is the lower bound. Theta requires both Big O and Omega, so that's why it's referred to as a tight bound (it must be both the upper and lower bound).
For example, an algorithm taking Omega(n log n) takes at least n log n time, but has no upper limit. An algorithm taking...
uint8_t can't be printed with cout
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isn't int(var) and (int)var actually the same thing?
– paulm
Feb 17 '14 at 23:18
9
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数据结构、算法复杂度一览表 - 更多技术 - 清泛网 - 专注IT技能提升
...ter
界限
growth
性能
(theta) Θ
upper and lower, tight
equal
= n
(big-oh) O
upper, tightness unknown
less than or equal
≤ n
(small-oh) o
upper, not tight
less than
< n
(big omega) Ω
lower, tightness unknown
gre...
数据结构、算法复杂度一览表 - 更多技术 - 清泛网 - 专注IT技能提升
...ter
界限
growth
性能
(theta) Θ
upper and lower, tight
equal
= n
(big-oh) O
upper, tightness unknown
less than or equal
≤ n
(small-oh) o
upper, not tight
less than
< n
(big omega) Ω
lower, tightness unknown
gre...
数据结构、算法复杂度一览表 - 更多技术 - 清泛网 - 专注IT技能提升
...ter
界限
growth
性能
(theta) Θ
upper and lower, tight
equal
= n
(big-oh) O
upper, tightness unknown
less than or equal
≤ n
(small-oh) o
upper, not tight
less than
< n
(big omega) Ω
lower, tightness unknown
gre...