本文实例总结了python选择排序算法。分享给大家供大家参考。具体如下:
代码1:
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def ssort(V):
#V is the list to be sorted
j = 0
#j is the "current" ordered position, starting with the first one in the list
while j ! = len (V):
#this is the replacing that ends when it reaches the end of the list
for i in range (j, len (V)):
#here it replaces the minor value that it finds with j position
if V[i] < V[j]:
#but it does it for every value minor than position j
V[j],V[i] = V[i],V[j]
j = j + 1
#and here's the addiction that limits the verification to only the next values
return V
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代码2:
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def selection_sort( list ):
l = list [:]
# create a copy of the list
sorted = []
# this new list will hold the results
while len (l):
# while there are elements to sort...
lowest = l[ 0 ]
# create a variable to identify lowest
for x in l:
# and check every item in the list...
if x<lowest:
# to see if it might be lower.
lowest = x
sorted .append(lowest)
# add the lowest one to the new list
l.remove(lowest)
# and delete it from the old one
return sorted
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代码3
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a = input ( "Enter the length of the list :" )
# too ask the user length of the list
l = []
# take a emty list
for g in range (a):
# for append the values from user
b = input ( "Enter the element :" )
# to ask the user to give list values
l.append(b)
# to append a values in a empty list l
print "The given eliments list is" ,l
for i in range ( len (l)):
# to repeat the loop take length of l
index = i
# to store the values i in string index
num = l[i]
# to take first value in list and store in num
for j in range (i + 1 , len (l)):
# to find out the small value in a list read all values
if num>l[j]:
# to compare two values which store in num and list
index = j
# to store the small value of the loop j in index
num = l[j]
# to store small charecter are value in num
tem = l[i]
# to swap the list take the temparary list stor list vlaues
l[i] = l[index]
# to take first value as another
l[index] = tem
print "After the swping the list by selection sort is" ,l
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希望本文所述对大家的Python程序设计有所帮助。