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Algorithms based on number base systems? [closed]
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edited Mar 20 '11 at 7:13
Darius Bacon
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How can I check if a key exists in a dictionary? [duplicate]
Let's say I have an associative array like so: {'key1': 22, 'key2': 42} .
3 Answers
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Memoization in Haskell?
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259
We can do this very efficiently by making a structure that we can index in sub-linear time.
B...
How to determine the longest increasing subsequence using dynamic programming?
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OK, I will describe first the simplest solution which is O(N^2), where N is the size of the collection. There also exists a O(N log N) solution, which I will describe also. Look here for it at the section Efficient algorithms.
I will assume the indices of the array are from 0 to N - 1...
Syntax for a single-line Bash infinite while loop
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12 Answers
12
Active
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Ruby max integer
... big they can be.
If you are looking for the machine's size, i.e. 64- or 32-bit, I found this trick at ruby-forum.com:
machine_bytes = ['foo'].pack('p').size
machine_bits = machine_bytes * 8
machine_max_signed = 2**(machine_bits-1) - 1
machine_max_unsigned = 2**machine_bits - 1
If you are look...
Add Variables to Tuple
...n. However, you can concatenate or slice them to form new tuples:
a = (1, 2, 3)
b = a + (4, 5, 6) # (1, 2, 3, 4, 5, 6)
c = b[1:] # (2, 3, 4, 5, 6)
And, of course, build them from existing values:
name = "Joe"
age = 40
location = "New York"
joe = (name, age, location)
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Select SQL Server database size
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232
Try this one -
Query:
SELECT
database_name = DB_NAME(database_id)
, log_size_mb =...
不到20个积木块，我用App Inventor 2给女儿做了个接星星小游戏 - App应用开...
...在手机上的接星星App吧！"刚好最近在研究App Inventor 2的精灵动画组件，于是决定用一上午把这个小游戏做出来——没想到过程比想的顺利不少。
需求分析
女儿的"需求"其实很简单：
1. 星星从屏幕上方不断掉落
2...