style: Quicksort rules to avoid allocation of temporary vectors. by pcwalton · Pull Request #1567 · servo/servoYou signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Reload to refresh your session. You switched accounts on another tab or window. Reload to refresh your session. Dismiss alert
sort: improve average quicksort performance · golang/go@6f6b2f0
- change way of protection from O(N^2) on duplicate values. Previous algorithm does additional comparisons and swaps on every split pass. Changed algorithm does one ordinal quicksort split pass, and if distribution is skewed, then additional pass to separate pivot's duplicates. Changed algorithm could be slower on very ununique slice, but it is still protected from O(N^2). - increase small slice s
Multikey quicksortとかTernary quicksortとか呼ばれるやつ．（参考： 続・アルゴリズムを学ぼう 4.7 接尾辞配列(SuffixArray)）
multikey_quick_sort.cpp � �" V `=�$ V #include <iostream> #include <string> #include <vector> #include <algorithm> #include <assert.h> using namespace std; // pivotを選ぶ． char find_pivot_char(vector<string> &data, int left, int right, int depth) { assert(0 <= left); assert(right <= data.size()); assert(left + 1 <= right); char a = data[left].size() <= depth ? -1 : data[left][depth]; char b = data[(l
Quicksort in Swift
gistfile1.swift ��ʵU var randomNumbers = [42, 12, 88, 62, 63, 56, 1, 77, 88, 97, 97, 20, 45, 91, 62, 2, 15, 31, 59, 5] func partition(v: Int[], left: Int, right: Int) -> Int { var i = left for j in (left + 1)..(right + 1) { if v[j] < v[left] { i += 1 (v[i], v[j]) = (v[j], v[i]) } } (v[i], v[left]) = (v[left], v[i]) return i } func quicksort(v: Int[], left: Int, right: Int) { if right > left { let
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