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OS/2 Shareware BBS: 10 Tools
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pytho152.zip
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emx
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python1.5
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bisect.py
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2000-08-10
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480b
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# Bisection algorithms
# Insert item x in list a, and keep it sorted assuming a is sorted
def insort(a, x, lo=0, hi=None):
if hi is None:
hi = 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=0, hi=None):
if hi is None:
hi = len(a)
while lo < hi:
mid = (lo+hi)/2
if x < a[mid]: hi = mid
else: lo = mid+1
return lo