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Revision 9274e2d0e9a07c20a9ee8ab8e79e7d0d037615c0 authored by Guido van Rossum on 26 April 1994, 07:35:17 UTC, committed by Guido van Rossum on 26 April 1994, 07:35:17 UTC
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bisect.py
# Bisection algorithms


# Insert item x in list a, and keep it sorted assuming a is sorted

def insort(a, x):
        lo, hi = 0, len(a)
        while lo < hi:
		mid = (lo+hi)/2
		if x < a[mid]: hi = mid
		else: lo = mid+1
	a.insert(lo, x)


# Find the index where to insert item x in list a, assuming a is sorted

def bisect(a, x):
        lo, hi = 0, len(a)
        while lo < hi:
		mid = (lo+hi)/2
		if x < a[mid]: hi = mid
		else: lo = mid+1
	return lo
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