android13/external/ltp/testcases/lib/tst_get_median.c

38 lines
720 B
C

// SPDX-License-Identifier: GPL-2.0-or-later
/* Copyright (c) 2021 Oracle and/or its affiliates. All Rights Reserved. */
#include <stdio.h>
#include <stdlib.h>
static int cmp(const void *a, const void *b)
{
return (*(int *)a - *(int *)b);
}
int main(int argc, const char *argv[])
{
const size_t size = argc - 1;
if (!size) {
fprintf(stderr, "Please provide a numeric list\n");
return 1;
}
if (size == 1) {
printf("%d", atoi(argv[1]));
return 0;
}
int arr[size];
size_t i;
for (i = 0; i < size; ++i)
arr[i] = atoi(argv[i + 1]);
qsort(arr, size, sizeof(arr[0]), cmp);
const size_t size2 = size / 2;
printf("%d", (size & 1) ? arr[size2] : ((arr[size2 - 1] + arr[size2]) / 2));
return 0;
}