用Java语言实现的各种排序,包括插入排序、冒泡排序、选择排序、Shell排序、快速排序、归并排序、堆排序、SortUtil等。 pG
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插入排序: NIgt"o[I
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package org.rut.util.algorithm.support; V; ChrmE
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import org.rut.util.algorithm.SortUtil; U_:/>8})d
/** d00r&Mc
* @author treeroot 9O|m#&wa]
* @since 2006-2-2
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* @version 1.0 b_B4
*/ L
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public class InsertSort implements SortUtil.Sort{ v>,XJ 7P
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/* (non-Javadoc) !l}es4~.a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q>|<R[.7
*/ V
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public void sort(int[] data) { p4/D%*G^`
int temp; Ft07>E$/Q^
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0g1uM:;
} ]`lTkh
} CkOd>Kn
} f#!Ljjf$;
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} H6L`239u
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冒泡排序: :/u
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package org.rut.util.algorithm.support; a^,Xm(Wb}
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import org.rut.util.algorithm.SortUtil; I!{5*~ 3
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/** kw!! 5U;7
* @author treeroot FvRog<3X
* @since 2006-2-2
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* @version 1.0 d
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*/ 1v`*%95
public class BubbleSort implements SortUtil.Sort{ 1%>/%eyn5
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/* (non-Javadoc) VLR W,lR9O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Wu:evaZ:i
*/ O5E \#*<K
public void sort(int[] data) { u-8,9
int temp; tY VmB:l
for(int i=0;i for(int j=data.length-1;j>i;j--){ LnLuWr<;}
if(data[j] SortUtil.swap(data,j,j-1); o_{-X 1w
} t)5bHVx
} O
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} Qax=_[r
} "zv?qS
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} ^W;\faG
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选择排序: g$uj<"^
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package org.rut.util.algorithm.support; o4U9jU4<"
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import org.rut.util.algorithm.SortUtil; *!vwW
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/** |SCO9,Fs
* @author treeroot w?Y;pc}1B
* @since 2006-2-2 @2V#bK
* @version 1.0 ^`ny]3JA
*/ ?8pR RzV$
public class SelectionSort implements SortUtil.Sort { K;Fy&p^d
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/* ?nE<Aig
* (non-Javadoc) uq'T:d
* {ZB7,\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 86oa>#opU
*/ "OkJPu2!W
public void sort(int[] data) { Nvw'[?m
int temp; dxsPX=\:
for (int i = 0; i < data.length; i++) { |%Pd*yZA
int lowIndex = i; udgf{1EB&2
for (int j = data.length - 1; j > i; j--) { "luMz;B
if (data[j] < data[lowIndex]) { Db@$'
lowIndex = j;
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} `StlG=TB8
} T=%,^
SortUtil.swap(data,i,lowIndex); 4 1q|R[js!
} Y$ZZ0m
} 4~4D1
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} (/JiOg^cw
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Shell排序: ^Yul|0*J
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package org.rut.util.algorithm.support; DY1UP(y
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import org.rut.util.algorithm.SortUtil; T@Mrbravc
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/** jYI\.bc
* @author treeroot $cflF@3
* @since 2006-2-2 @#rF8;
* @version 1.0 g\:(1oY
*/ r1ao=N
public class ShellSort implements SortUtil.Sort{ 2M@,g8O+B=
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/* (non-Javadoc) )H8Rfn?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Dn~c
*/ k^K>*mcJ
public void sort(int[] data) { jnho*,X
for(int i=data.length/2;i>2;i/=2){ OlI|.~
for(int j=0;j insertSort(data,j,i); 4SlEc|'7@
} aYW9C<5
} @~sJ
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insertSort(data,0,1); b1\.hi
} F!ZE4S_
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/** Xs}.7
* @param data /-s-W<S[
* @param j ZW7z[,tk<.
* @param i m9M#)<@*
*/ P:KS*lOp
private void insertSort(int[] data, int start, int inc) { 4MUN1/DId`
int temp; ~HBQQt
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); VUmf;~
} &L`^\B]k|
} VH M&Y-G
} kn%i#Fz
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} x,L<{A`z
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快速排序: Q,v/]bXd
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package org.rut.util.algorithm.support; OGcq]ue
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import org.rut.util.algorithm.SortUtil; A1g.ww:
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/** ?`hA :X<
* @author treeroot M47t(9krV
* @since 2006-2-2 ?te~[_oT
* @version 1.0 Gn&=<q:H
*/ 6pP:Q_U$
public class QuickSort implements SortUtil.Sort{ p?-qlPl
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/* (non-Javadoc) 'Y2ImSWj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )[wB:kG
*/ z|bAZKSRYx
public void sort(int[] data) { /:B2-4>Q!
quickSort(data,0,data.length-1); 4g+Dp&U
} =aB c.PJ^
private void quickSort(int[] data,int i,int j){ :_k5[KT.]9
int pivotIndex=(i+j)/2; |tN:o=
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SortUtil.swap(data,pivotIndex,j); fb+_]{7g
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int k=partition(data,i-1,j,data[j]); t03X/%H
SortUtil.swap(data,k,j); ?xW,2S
if((k-i)>1) quickSort(data,i,k-1); iVT)V>U p
if((j-k)>1) quickSort(data,k+1,j); <c3Te$.
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} %\^VxM
/** L;h|Sk]{
* @param data e1Q
* @param i %-fQ[@5
* @param j L.2!Q3&
* @return ^|%u%UR
*/ 3!M|Sf<s
private int partition(int[] data, int l, int r,int pivot) { 'C7$,H'
do{ 70-nAv
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); twMDEw#VL
SortUtil.swap(data,l,r); u+
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} T].Xx`
while(l SortUtil.swap(data,l,r); zb3,2D+P
return l; i"#pk"@`
} G4rd<V0[D
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} |BBo
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改进后的快速排序: E5q t~:C|
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package org.rut.util.algorithm.support; ?t)Mt]("
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import org.rut.util.algorithm.SortUtil; X'{o/U.
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/** DGbEQiX$\
* @author treeroot _9yW; i-
* @since 2006-2-2 I;Pd}A_}=_
* @version 1.0 yXQ 28A
*/ 6t=)1T
public class ImprovedQuickSort implements SortUtil.Sort { .WLwAL
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private static int MAX_STACK_SIZE=4096; #+&"m7
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private static int THRESHOLD=10; } `Cc-X7
/* (non-Javadoc) <!=:{&d%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H1c>3c
*/ ;Wgkf_3
public void sort(int[] data) { MzMVs3w|
int[] stack=new int[MAX_STACK_SIZE]; & LhQr-g
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int top=-1; U1Y0G[i)
int pivot; k%R(Qga
int pivotIndex,l,r; O{x-9p
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stack[++top]=0; ~p?D[]h
stack[++top]=data.length-1; 3 S .2
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while(top>0){ Ax6zx
int j=stack[top--]; ;#L]7ZY9:-
int i=stack[top--]; .Zc:$"gDu
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pivotIndex=(i+j)/2; &PPYxg<
pivot=data[pivotIndex]; 40aD\S>
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SortUtil.swap(data,pivotIndex,j); tIk$4)ZAl
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r=j; eus@;l*
do{ K5 EJ#1ov
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); z+KZ6h
SortUtil.swap(data,l,r); G<P/COI#M5
} [0D.+("EW
while(l SortUtil.swap(data,l,r); !?" pnKb}
SortUtil.swap(data,l,j); [e>2HIS,
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if((l-i)>THRESHOLD){ BCO (,k
stack[++top]=i; OaKr_m
stack[++top]=l-1; tkQrxa|
} oT|:gih5
if((j-l)>THRESHOLD){ @~&|BvK% \
stack[++top]=l+1; 1:RK~_E
stack[++top]=j; 'U,\5jj'Y
} \!"3yd
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} ]E.\ |I(
file://new InsertSort().sort(data); {Y3:Y+2X3*
insertSort(data); Y.q$"lm7k
} cqaq~
/** OepQ Z|2
* @param data <sn,X0W
*/ PZY6
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private void insertSort(int[] data) { XP[~ :+
int temp; r?9".H
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3e>U(ES
} .e4upTGU
} +i[@+`
} v|dt[>G
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} ^A=2#j~H\
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归并排序: 9rIv-&7'm
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package org.rut.util.algorithm.support; /i
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import org.rut.util.algorithm.SortUtil; zDBm^ s
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/** wb%4f6i
* @author treeroot Ce~Pms]
* @since 2006-2-2 ZENblh8fs
* @version 1.0 +Ht(_+To1
*/ _;R#B`9Iu
public class MergeSort implements SortUtil.Sort{ ~>Y^?l
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/* (non-Javadoc) q;#bFPh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8K@e8p( y
*/ Md0`/F:+2
public void sort(int[] data) { RRro.r,
int[] temp=new int[data.length]; d6ifJ
mergeSort(data,temp,0,data.length-1); E
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} RU~Pa+H
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private void mergeSort(int[] data,int[] temp,int l,int r){ ~Lq`a@]A
int mid=(l+r)/2; YV'B*arIA
if(l==r) return ; Esm=sPW
mergeSort(data,temp,l,mid); P`S'F_IN
mergeSort(data,temp,mid+1,r); l3y}nh+ 8
for(int i=l;i<=r;i++){ 3BAQ2S}
temp=data; 7%&e4