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Results tagged with restricted-complexity
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user 116117
Challenges with a spec which requires all answers to meet certain time complexity restrictions. This could be specific ("Your answer must be O(n^2) where n is the number of items in the input"), or at the level of complexity classes ("Your answer must be polynomial in the number of items in the input").
3
votes
1
answer
199
views
Output intervals for the optimal subarrays
Consider an array A of integers of length n. The k-max subarray sum asks us to find up to \$k \leq 3\$ (contiguous) non overlapping subarrays of A with maximum sum. If A is all negative then this su …
- 3,275
11
votes
16
answers
1k
views
Compute maximum excluding the current position
Given an array of integers A, the task is to output another array B of the same length so that B[i] is the maximum over A for every index that is not i. That is \$B[i] = \max_{i' \ne i} A[i']\$.
Examp …
- 3,275
10
votes
2
answers
484
views
Find a string in the middle
Given two strings \$A\$ and \$B\$ with edit (Levenshtein) distance \$x\$, find a third string with edit distance \$a\$ to \$A\$ and edit distance \$b\$ to \$B\$ so that \$a+b=x\$ and \$a=int(x/2)\$ (t …
- 3,275
12
votes
17
answers
2k
views
Compute cumulative means efficiently
Consider a sorted array of positive floating point numbers such as:
input = [0.22, 2.88, 6.35, 7.17, 9.15]
For each integer \$i\$ from 1 up to the last value in input rounded up, output the mean of a …
- 3,275