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a6baba1b07
The WIN32 CreateProcess() function does not require an .exe or .com suffix in order to spawn an executable. Now that we have Cosmo bash we're no longer so dependent on the cmd.exe prompt.
95 lines
2.6 KiB
Python
95 lines
2.6 KiB
Python
"""Bisection algorithms."""
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def insort_right(a, x, lo=0, hi=None):
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"""Insert item x in list a, and keep it sorted assuming a is sorted.
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If x is already in a, insert it to the right of the rightmost x.
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Optional args lo (default 0) and hi (default len(a)) bound the
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slice of a to be searched.
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"""
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if lo < 0:
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raise ValueError('lo must be non-negative')
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if hi is None:
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hi = len(a)
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while lo < hi:
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mid = (lo+hi)//2
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if x < a[mid]: hi = mid
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else: lo = mid+1
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a.insert(lo, x)
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insort = insort_right # backward compatibility
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def bisect_right(a, x, lo=0, hi=None):
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"""Return the index where to insert item x in list a, assuming a is sorted.
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The return value i is such that all e in a[:i] have e <= x, and all e in
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a[i:] have e > x. So if x already appears in the list, a.insert(x) will
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insert just after the rightmost x already there.
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Optional args lo (default 0) and hi (default len(a)) bound the
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slice of a to be searched.
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"""
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if lo < 0:
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raise ValueError('lo must be non-negative')
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if hi is None:
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hi = len(a)
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while lo < hi:
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mid = (lo+hi)//2
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if x < a[mid]: hi = mid
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else: lo = mid+1
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return lo
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bisect = bisect_right # backward compatibility
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def insort_left(a, x, lo=0, hi=None):
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"""Insert item x in list a, and keep it sorted assuming a is sorted.
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If x is already in a, insert it to the left of the leftmost x.
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Optional args lo (default 0) and hi (default len(a)) bound the
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slice of a to be searched.
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"""
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if lo < 0:
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raise ValueError('lo must be non-negative')
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if hi is None:
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hi = len(a)
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while lo < hi:
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mid = (lo+hi)//2
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if a[mid] < x: lo = mid+1
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else: hi = mid
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a.insert(lo, x)
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def bisect_left(a, x, lo=0, hi=None):
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"""Return the index where to insert item x in list a, assuming a is sorted.
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The return value i is such that all e in a[:i] have e < x, and all e in
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a[i:] have e >= x. So if x already appears in the list, a.insert(x) will
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insert just before the leftmost x already there.
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Optional args lo (default 0) and hi (default len(a)) bound the
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slice of a to be searched.
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"""
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if lo < 0:
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raise ValueError('lo must be non-negative')
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if hi is None:
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hi = len(a)
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while lo < hi:
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mid = (lo+hi)//2
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if a[mid] < x: lo = mid+1
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else: hi = mid
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return lo
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# Overwrite above definitions with a fast C implementation
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try:
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from _bisect import *
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except ImportError:
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pass
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if __name__ == 'PYOBJ':
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import _bisect
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