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How can I convert a dictionary into a list of tuples?
If I have a dictionary like:
11 Answers
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Update value of a nested dictionary of varying depth
I'm looking for a way to update dict dictionary1 with the contents of dict update wihout overwriting levelA
24 Answers
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Most efficient way to store thousand telephone numbers
...t. We view these remaining five digits as 17-bit binary integers and store k of those bits using one method and 17 - k = m with a different method, determining k at the end to minimize the required space.
We first sort the phone numbers (all reduced to 5 decimal digits). Then we count how many phon...
How to find the kth largest element in an unsorted array of length n in O(n)?
I believe there's a way to find the kth largest element in an unsorted array of length n in O(n). Or perhaps it's "expected" O(n) or something. How can we do this?
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Best way to merge two maps and sum the values of same key?
I want to merge them, and sum the values of same keys. So the result will be:
15 Answers
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Statistics: combinations in Python
...e function to do that in math , numpy or stat libraries. Something like a function of the type:
18 Answers
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List comprehension on a nested list?
...ed Aug 6 '13 at 6:05
Andrew ClarkAndrew Clark
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Algorithm to return all combinations of k elements from n
I want to write a function that takes an array of letters as an argument and a number of those letters to select.
71 Answe...
Sort a Map by values
I am relatively new to Java, and often find that I need to sort a Map<Key, Value> on the values.
58 Answers
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How to merge dictionaries of dictionaries?
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this is actually quite tricky - particularly if you want a useful error message when things are inconsistent, while correctly accepting duplicate but consistent entries (something no other answer here does....)
assuming you don't have huge numbers of ...