python选择排序算法实例总结

代码1：

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 

代码2：

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

代码3

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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