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Continuing from ba189ed42e7f65eb354ff385fa89e51374e2d3af and eventually emitting the IR from Rust, not handwriting it
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### Select the Day of Content
others
### What information is missing?
Some problems in Competitive programming needs more complexity when we solve using brute-force approach. It can be reduced usin…
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If you're looking for something to do :), then scans would be a good thing to add.
Dask calls this "cumreduction" (terrible name!) : and its a quite useful primitive (xarray uses it for `ffill`, `b…
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```
//303. Range Sum Query – Immutable
type NumArray struct {
sums []int
}
func NewNumArray(nums []int) (na *NumArray) {
na = &NumArray{}
na.sums = make([]int, len(nums) + 1)
for i := 1…
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## 📝 Description
**무엇을?**
- https://leetcode.com/problems/sum-of-prefix-scores-of-strings/description/?envType=daily-question&envId=2024-09-25
- https://leetcode.com/problems/find-the-length-of-the…
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Prefix sum is one of the most widely used concept when it comes to problem solving. would like to add the detailed explaination along with code.
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# `prefix sum`
- 수열 `n`개가 주어질 때, 해당 수열에서 `x`개마다의 합을 구하는 알고리즘
- 2중 for loop로 $O(N^2)$의 시간 소모
- $O(N)$ 알고리즘
### 예시
- `1, 2, 3, 4, 5`의 수열
- 2번째부터 4번째까지의 누적합을 구해야 한다면?
- 프로세스
- (최초 1회) 전체 …
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It seems that the parser misses some features to express prefix sum.
Here are two versions that use `MAX` instead of `SUM` due to the earlier mentioned issue with typing `SUM`: https://github.com/…
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From #39
1. [Running out of space](https://www.codewars.com/kata/56576f82ab83ee8268000059)
* 7kyu
* Input is a list of strings, output is cumulative concatenated string
* Satisfaction 91% with 4.3k c…
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I'd like to be able to get a count of entries starting with a given prefix. Currently its possible iterating through a `prefix` iterator and counting elements, however we can optimize this by visiting…