browser/devtools/debugger/test/code_binary_search.coffee@6474c204b198
browser/devtools/debugger/test/code_binary_search.coffee
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
1 # Uses a binary search algorithm to locate a value in the specified array.
2 window.binary_search = (items, value) ->
4 start = 0
5 stop = items.length - 1
6 pivot = Math.floor (start + stop) / 2
8 while items[pivot] isnt value and start < stop
10 # Adjust the search area.
11 stop = pivot - 1 if value < items[pivot]
12 start = pivot + 1 if value > items[pivot]
14 # Recalculate the pivot.
15 pivot = Math.floor (stop + start) / 2
17 # Make sure we've found the correct value.
18 if items[pivot] is value then pivot else -1
