Python Common sorting algorithm

#快排
1 defQ_sort (L):2left =03right = Len (l)-14     returnQ (l,left,right)5 6 defQuick_sort (l,left,right):7     ifLeft >=Right :8         returnL9Low = LeftTenHigh = Right One      whileRight>Left : A          whileRight>left andL[right] >=L[left]: -Right-=1 -L[right],l[left] =L[left],l[right] the          whileRight>left andL[right] >=L[left]: -Left + = 1 -L[right],l[left] =L[left],l[right] -Q (l,low,left-1) +Q (l,left+1, High) -     returnL

#堆排序
1 defHeap_sort (L):2n = Len (l)#n-1 last node label3First = (n/2-1)#last non-leaf node4      forStartinchRange (first,-1,-1):     5Max_heap (l,start,n-1)6 7      forEndinchRange (n-1,0,-1):8L[end],l[0] =L[0],l[end]9Max_heap (l,0,end-1)#Remove the last node label forward refactoringTen     returnL One  A  - defmax_heap (l,start,end): -Root =Start the      whileTrue: -Child = root*2 + 1 -         ifChild > End: Break -         ifChild+1 <= End andL[child] < l[child+1]: +Child + = 1 -         ifL[root] <L[child]: +L[root],l[child] =L[child],l[root] ARoot = Child at         Else: -              Break

#堆排序取前100大
1 defHeap_sort (L):2n =Len (l)3First = n/2-1#last non-leaf node4      forStartinchRange (first,-1,-1):5Min_heap (l,start,n-1)6 7      forEndinchRange (n-1,0,-1):8L[end], l[0] =l[0], L[end]9Min_heap (l,0,end-1)Ten     returnL One  A  - defmin_heap (l,start,end): -Root =Start the      while1: -Child = Root*2+1 -         ifChild > End: Break -         ifChild+1 <= End andL[child] > L[child+1]: +Child+=1 -         ifL[root] >L[child]: +L[root],l[child] =L[child],l[root] ARoot = Child at         Else: -              Break -  - defqu (x): #x为传入数列, Z is the list of the top 100 outputs -z = Heap_sort (x[:100]) -     Print 'Z:', Z in      forIinchx[100:]: -         ifi > z[99]: toz[99]=I + Heap_sort (z) -     returnZ

#归并排序
1 defMerge_sort (L):2     ifLen (l) <= 1:3         returnL4num = Len (l)/25left =Merge_sort (L[:num])6right =Merge_sort (l[num:])7     returnmerge (Left,right)8 9 defmerge (left,right):Teni=j=0 OneR=[] A      whileI<len (left) andj<Len (right): -         ifLeft[i] <=Right[j]: - r.append (Left[i]) theI+=1 -         Else: - r.append (Right[j]) -J+=1 +R + =Left[i:] -R + =Right[j:] +     returnR

 1  #   bubbling  2  def   Maopao (seq):  3  for  i in
      Range (0,len (seq) -1 4  for  J in  range (0,len (SEQ)-1- i):  5  if
        Seq[j] > Seq[j+1]:  6  seq[j ],seq[j+1]=seq[j+1],seq[j]  7  return  seq 

1 #Insert2 defDirectinsert (seq):3      forIinchRange (1, Len (seq)):4Temp, J =Seq[i], I5          whileJ>0 andTemp < Seq[j-1]:6SEQ[J] = seq[j-1]7j = J-18SEQ[J] =Temp9     returnseqTen  One #Insert (start from middle) A defDI (seq): -      forIinchRange (1, Len (seq)): -Temp, j,k = Seq[i], I, I/2 the         ifTemp <Seq[k]: -              whileK>0 andTemp < Seq[k-1]: -Seq[k] = seq[k-1] -K = K-1 +SEQ[K] =Temp -         Else: +              whileJ>0 andTemp < Seq[j-1]: ASEQ[J] = seq[j-1] atj = J-1 -SEQ[J] =Temp -     returnSeq

1 #Direct Select Sort2 defSelect_sort (L):3      forIinchRange (0,len (l)):4Min =I5          forJinchRange (i+1, Len (l)):6             ifL[min] >L[j]:7Min =J8L[min],l[i] =L[i],l[min]9     returnL

Reference: http://www.cnblogs.com/jztan/p/5878630.html

Python Common sorting algorithm