generalizedBinarySearch2 - comparator is IF1<A, Int> [1029232]

< > BotCompany Repo | #1029232 // generalizedBinarySearch2 - comparator is IF1<A, Int>

JavaX fragment (include) [tags: use-pretranspiled]

static <A> int generalizedBinarySearch2(L<A> l, IF1<A, Int> cmp) {
  ret generalizedBinarySearch2(l, 0, l(l), cmp);
}

static <A> int generalizedBinarySearch2(L<A> l, int fromIndex, int toIndex, IF1<A, Int> cmp) {
  int low = fromIndex;
  int high = toIndex - 1;

  while (low <= high) {
    int mid = (low + high) >>> 1;
    A midVal = l.get(mid);

    int c = cmp.get(midVal);
    if (c < 0)
      low = mid + 1;
    else if (c > 0)
      high = mid - 1;
    else
      ret mid; // key found
  }
  ret -(low + 1);  // key not found.
}

Author comment

Began life as a copy of #1029231

Travelled to 7 computer(s): bhatertpkbcr, mqqgnosmbjvj, pyentgdyhuwx, pzhvpgtvlbxg, tvejysmllsmz, vouqrxazstgt, xrpafgyirdlv

Snippet ID:

#1029232

Snippet name:

generalizedBinarySearch2 - comparator is IF1<A, Int>

Eternal ID of this version:

#1029232/4

Text MD5:

18a2b103c9be8da4f5e5c7f84a843162

Transpilation MD5:

e2405813ed837c24c51af7232922db84

Author:

stefan

Category:

javax

Type:

JavaX fragment (include)

Public (visible to everyone):

Yes

Archived (hidden from active list):

Created/modified:

2020-11-09 11:33:17

Source code size:

559 bytes / 22 lines

Pitched / IR pitched:

No / No

Views / Downloads:

175 / 268

Version history:

3 change(s)

Referenced in:

[show references]

1	static <A> int generalizedBinarySearch2(L<A> l, IF1<A, Int> cmp) {
2	ret generalizedBinarySearch2(l, 0, l(l), cmp);
3	}
4
5	static <A> int generalizedBinarySearch2(L<A> l, int fromIndex, int toIndex, IF1<A, Int> cmp) {
6	int low = fromIndex;
7	int high = toIndex - 1;
8
9	while (low <= high) {
10	int mid = (low + high) >>> 1;
11	A midVal = l.get(mid);
12
13	int c = cmp.get(midVal);
14	if (c < 0)
15	low = mid + 1;
16	else if (c > 0)
17	high = mid - 1;
18	else
19	ret mid; // key found
20	}
21	ret -(low + 1); // key not found.
22	}