aicodix___code/sort.hh
2024-03-07 21:21:32 +01:00

34 lines
546 B
C++

/*
Some stable sorting algorithms
Copyright 2024 Ahmet Inan <inan@aicodix.de>
*/
#pragma once
template <typename TYPE>
static void insertion_sort(TYPE *a, int n)
{
for (int i = 1, j; i < n; ++i) {
TYPE t = a[i];
for (j = i; j > 0 && a[j-1] > t; --j)
a[j] = a[j-1];
a[j] = t;
}
}
template <typename TYPE>
static void insertion_sort(int *p, TYPE *a, int n)
{
p[0] = 0;
for (int i = 1, j; i < n; ++i) {
TYPE t = a[i];
for (j = i; j > 0 && a[j-1] > t; --j) {
a[j] = a[j-1];
p[j] = p[j-1];
}
a[j] = t;
p[j] = i;
}
}