void update(int i, int v) {
arr[trace[i]] = v;
int block = block_number(i);
int j, block_t = block * t, block_1_t = (block + 1) * t - 1;
for (j = trace[i]; j > block_t; j--) {
if (arr[j] > arr[j - 1]) {
swap(arr[j], arr[j - 1]);
trace[idx[j]] = j - 1;
trace[idx[j - 1]] = j;
swap(idx[j], idx[j - 1]);
}
else
break;
}
for (j = trace[i]; (j < block_1_t) && (j < n_1); j++) {
if (arr[j] < arr[j + 1]) {
swap(arr[j], arr[j + 1]);
trace[idx[j]] = j + 1;
trace[idx[j + 1]] = j;
swap(idx[j], idx[j + 1]);
}
else
break;
}
}
int get_answer(int i, int k) {
if (i == -1)
return 0;
int block = block_number(i);
int block_1 = block - 1;
int begin = 0, end = t - 1;
int j, sum = 0;
for (j = 0; j <= block_1; j++) {
sum = sum + end - binary_search(begin, end, k) + 1;
begin = end + 1;
end = begin + (t - 1);
}
if (end > n_1)
end = n_1;
for (j = begin; j <= end /*&& j <= n_1*/; j++) {
if (arr[j] <= k && idx[j] <= i)
sum++;
}
return sum;
}
void Table::print ()
{
Block *p;
for (int i = 0; i < total_blocks; ++i)
{
printf("%d:", i);
p = position[i].up;
while (p != p->position) {
printf(" %d", block_number(p));
p = p->up;
}
putchar('\n');
}
}
/* A block is a sequence that does not transverse boundary letters.
* For more details on boundary lettters see sep in preprocess.c */
long data_to_blocks(char *data, size_t sz, char ***blocks) {
long block_n;
// compute the number of blocks in data.
block_n = block_number(data, sz);
if((*blocks = (char **) malloc(sizeof(char *)*block_n)) == NULL) {
setlocation(LOCATION, __func__);
return RERROR;
}
// populate blocks from tokenised data
if((block_n = blocks_compute(data, sz, *blocks, block_n))==RERROR) {
setlocation(LOCATION, __func__);
return RERROR;
}
return block_n;
}