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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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This commit is contained in:
Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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devtools/client/debugger/test/mochitest/code_binary_search.coffee Normal file
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# Uses a binary search algorithm to locate a value in the specified array.
window.binary_search = (items, value) ->
start = 0
stop = items.length - 1
pivot = Math.floor (start + stop) / 2
while items[pivot] isnt value and start < stop
# Adjust the search area.
stop = pivot - 1 if value < items[pivot]
start = pivot + 1 if value > items[pivot]
# Recalculate the pivot.
pivot = Math.floor (stop + start) / 2
# Make sure we've found the correct value.
if items[pivot] is value then pivot else -1