def main():
n = 5
p = 0.5
trials = 2000
q = evaluate(n,p,trials)
stdio.writeln(q)
def main():
print('please input your information:')
s = stdio.readLine().strip('/n')
entropy_sum = 0.0
entropy_sum =count_entropy(s)
stdio.writeln('The engropy of "{0}" is {1}'.format(s,entropy_sum))
def main():
# r_obj = __redirection__()
# sys.stdout = r_obj
n = int(sys.argv[1])
total = 0
for i in range(n):
total += stdio.readInt()
stdio.writeln('in {0} sum is'.format(sys.argv[0]) + str(total))
def main():
r1 = int(sys.argv[1])
g1 = int(sys.argv[2])
b1 = int(sys.argv[3])
r2 = int(sys.argv[4])
g2 = int(sys.argv[5])
b2 = int(sys.argv[6])
c1 = Color(r1,g1,b1)
c2 = Color(r2,g2,b2)
stdio.writeln(areCompatible(c1,c2))
def main():
n = int(sys.argv[1])
total1 = 0.0
watch1 = stopwatch()
for i in range(n):
total1 += i**2
time1 = watch1.elapsedTime()
total2 = 0.0
watch2 = stopwatch()
for i in range(n):
total2 += i * i
time2 = watch2.elapsedTime()
stdio.writeln(total1 / total2)
stdio.writeln(time1 / time2)
def write1D(a):
"""
Write array a to sys.stdout. First write its length. bool objects
are written as 0 and 1, not False and True.
"""
length = len(a)
stdio.writeln(length)
for i in range(length):
# stdio.writef('%9.5f ', a[i])
element = a[i]
if isinstance(element, bool):
if element == True:
stdio.write(1)
else:
stdio.write(0)
else:
stdio.write(element)
stdio.write(' ')
stdio.writeln()
def write2D(a):
"""
Write two-dimensional array a to sys.stdout. First write its
dimensions. bool objects are written as 0 and 1, not False and True.
"""
rowCount = len(a)
colCount = len(a[0])
stdio.writeln(str(rowCount) + ' ' + str(colCount))
for row in range(rowCount):
for col in range(colCount):
#stdio.writef('%9.5f ', a[row][col])
element = a[row][col]
if isinstance(element, bool):
if element == True:
stdio.write(1)
else:
stdio.write(0)
else:
stdio.write(element)
stdio.write(' ')
stdio.writeln()
命令行模式：
python3 tansition.py<tiny.txt|python3 markov.py 20
'''
from stdpackage import stdio,stdarray
import sys
moves = int(sys.argv[1])
n = stdio.readInt()
stdio.readInt()
p = stdarray.create2D(n,n,0.0)
for i in range(n):
for j in range(n):
p[i][j] = stdio.readFloat()
ranks = stdarray.create1D(n,0.0)
ranks[0] = 1.0
for i in range(moves):
new_ranks = stdarray.create1D(n,0.0)
for k in range(n):
for j in range(n):
new_ranks[j] += ranks[k]*p[k][j]
ranks = new_ranks
for i in range(n):
stdio.writef('%8.5f',ranks[i])
stdio.writeln()
#计算输出转换矩阵，矩阵上第i行第j列的数字，代表从i页跳转到 j页的概率
from stdpackage import stdarray, stdio
n = stdio.readInt()
linkCounts = stdarray.create2D(n, n, 0)
outDegress = stdarray.create1D(n, 0)
while not stdio.isEmpty():
i = stdio.readInt()
j = stdio.readInt()
outDegress[i] += 1
linkCounts[i][j] += 1
stdio.writeln(str(n) + ' ' + str(n))
for i in range(n):
for j in range(n):
p = (0.8 * linkCounts[i][j] / outDegress[i]) + (0.2 / n)
stdio.writef('%8.5f', p)
stdio.writeln()
def main():
isOpen = stdarray.readBool2D()
stdarray.write2D(flow(isOpen))
stdio.writeln(percolates(isOpen))
def main():
instream = InStream(sys.argv[1])
a = instream.readAllStrings()
while not stdio.isEmpty():
key = stdio.readString()
if search(key, a) < 0: stdio.writeln(key)
