1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
|
# defines int arrays in C, with some convenience methods
# for reading arrays as globs directly from disk.
# Adam Lopez <alopez@cs.umd.edu>
from libc.stdio cimport FILE, fopen, fread, fwrite, fclose
from libc.stdlib cimport malloc, realloc, free
from libc.string cimport memset, memcpy
cdef class IntList:
def __cinit__(self, int size=0, int increment=1, int initial_len=0):
if initial_len > size:
size = initial_len
self.size = size
self.increment = increment
self.len = initial_len
self.arr = <int*> malloc(size*sizeof(int))
memset(self.arr, 0, initial_len*sizeof(int))
def __str__(self):
cdef unsigned i
ret = "IntList["
for idx in range(self.size):
if idx>0:
ret += ","
ret += str(self.arr[idx])
ret += "]"
ret += "len="
ret += str(self.len)
return ret
def index(self, val):
cdef unsigned i
for i in range(self.len):
if self.arr[i] == val:
return i
return IndexError
def partition(self,start,end):
pivot = self.arr[end]
bottom = start-1
top = end
done = 0
while not done:
while not done:
bottom += 1
if bottom == top:
done = 1
break
if self.arr[bottom] > pivot:
self.arr[top] = self.arr[bottom]
break
while not done:
top -= 1
if top == bottom:
done = 1
break
if self.arr[top] < pivot:
self.arr[bottom] = self.arr[top]
break
self.arr[top] = pivot
return top
def _doquicksort(self,start,end):
if start < end:
split = self.partition(start,end)
self._doquicksort(start,split-1)
self._doquicksort(split+1,end)
else:
return
def sort(self):
self._doquicksort(0,self.len-1)
def reset(self):
self.len = 0
def __dealloc__(self):
free(self.arr)
def __iter__(self):
cdef int i
for i in range(self.len):
yield self.arr[i]
def __getitem__(self, index):
cdef int i, j, k
if isinstance(index, int):
j = index
if j < 0:
j = self.len + j
if j<0 or j>=self.len:
raise IndexError("Requested index %d of %d-length IntList" % (index, self.len))
return self.arr[j]
elif isinstance(index, slice):
i = index.start
j = index.stop
if i < 0:
i = self.len + i
if j < 0:
j = self.len + j
if i < 0 or i >= self.len or j < 0 or j > self.len:
raise IndexError("Requested index %d:%d of %d-length IntList" % (index.start, index.stop, self.len))
result = ()
for k from i <= k < j:
result = result + (self.arr[k],)
return result
else:
raise TypeError("Illegal key type %s for IntList" % type(index))
cdef void set(self, int i, int val):
j = i
if i<0:
j = self.len + i
if j<0 or j>=self.len:
raise IndexError("Requested index %d of %d-length IntList" % (i, self.len))
self.arr[j] = val
def __setitem__(self, i, val):
self.set(i, val)
def __len__(self):
return self.len
def get_size(self):
return self.size
def append(self, int val):
self._append(val)
cdef void _append(self, int val):
if self.len == self.size:
self.size = self.size + self.increment
self.arr = <int*> realloc(self.arr, self.size*sizeof(int))
self.arr[self.len] = val
self.len = self.len + 1
def extend(self, other):
self._extend(other)
cdef void _extend(self, IntList other):
self._extend_arr(other.arr, other.len)
cdef void _extend_arr(self, int* other, int other_len):
if self.size < self.len + other_len:
self.size = self.len + other_len
self.arr = <int*> realloc(self.arr, self.size*sizeof(int))
memcpy(self.arr+self.len, other, other_len*sizeof(int))
self.len = self.len + other_len
cdef void _clear(self):
free(self.arr)
self.len = 0
self.size = 0
self.arr = <int*> malloc(0)
cdef void write_handle(self, FILE* f):
fwrite(&(self.len), sizeof(int), 1, f)
fwrite(self.arr, sizeof(int), self.len, f)
def write(self, char* filename):
cdef FILE* f
f = fopen(filename, "w")
self.write_handle(f)
fclose(f)
cdef void read_handle(self, FILE* f):
(self.arr)
fread(&(self.len), sizeof(int), 1, f)
self.arr = <int*> malloc(self.len * sizeof(int))
self.size = self.len
fread(self.arr, sizeof(int), self.len, f)
def read(self, char* filename):
cdef FILE* f
f = fopen(filename, "r")
self.read_handle(f)
fclose(f)
|
