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。 "/e_[_j
插入排序: #IJm*_J<
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package org.rut.util.algorithm.support; /{1s U}k-
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import org.rut.util.algorithm.SortUtil; &10l80vj
/** 7Qdf#DG
* @author treeroot OlU')0Y
* @since 2006-2-2 *Bfo"["0.
* @version 1.0 jej.!f:H
*/ 5(wmy-x\
public class InsertSort implements SortUtil.Sort{ UY>[
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/* (non-Javadoc) { 6
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G)|Xj70
*/ S?b^g'5m
public void sort(int[] data) { %x'}aTa
int temp; V}3'0
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); n[S-bzU^t
} * 'eE[/K
} 9sP;s^#t7U
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冒泡排序: R$XHjb)
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package org.rut.util.algorithm.support; Fqt,VED
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import org.rut.util.algorithm.SortUtil; *S xDwN
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/** ag V z
* @author treeroot ~<N9ckK
* @since 2006-2-2 ,?>{M
* @version 1.0 -F. c<@*E
*/ U[0x\~[$K
public class BubbleSort implements SortUtil.Sort{ >&DC[)28
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/* (non-Javadoc) m?<^b_a}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vp32}zeD
*/ ')Q
public void sort(int[] data) { $u~*V
int temp; X-=4Z9
for(int i=0;i for(int j=data.length-1;j>i;j--){ +>&i]x(b
if(data[j] SortUtil.swap(data,j,j-1); iQJa6QF&:
} tk)JE^'
} `q9n`h1
} {q/;G!ON.S
} ZaBmH|k
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} vbD""
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选择排序: z`qb>Y"xf3
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package org.rut.util.algorithm.support; qfkdQ/fP
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import org.rut.util.algorithm.SortUtil; {wDq*va
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/** 4tEAi4H|`@
* @author treeroot 4Q!|fn0Sv
* @since 2006-2-2 {Rdh4ZKh
* @version 1.0 VA>0Y
*/ naro
public class SelectionSort implements SortUtil.Sort { <vE|QxpR
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/* X
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* (non-Javadoc) NEUr w/
* r$1b=m,0d
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f}~=C2R1<!
*/ (rc7Cp3
public void sort(int[] data) { MgP&9
int temp; 3RX9LJGX
for (int i = 0; i < data.length; i++) { Qgf\"s
int lowIndex = i; K5rra%a-7
for (int j = data.length - 1; j > i; j--) { QE8`nMf
if (data[j] < data[lowIndex]) { *;(^)Sj4Q
lowIndex = j; J)^F
} V.9p4k`
} ]WzeJ"r {3
SortUtil.swap(data,i,lowIndex); (Hmm^MV)
} cV"Ov@_.k
} op@=0d??
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} ]61Si~Z
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Shell排序: 8f<y~L_(`
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package org.rut.util.algorithm.support; S[gACEZ =
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import org.rut.util.algorithm.SortUtil; o*artMkG
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/** &qK:LHhj
* @author treeroot [!>9K}z,=
* @since 2006-2-2 c:52pYf+
* @version 1.0 Y]*&\Ex"\
*/ }OhSCH'o6
public class ShellSort implements SortUtil.Sort{ Fg 8lX9L
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/* (non-Javadoc) S8B?uU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Fc80HK5R
*/ "G-h8IN^O
public void sort(int[] data) { i6A9|G$H
for(int i=data.length/2;i>2;i/=2){ 1hlU
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for(int j=0;j insertSort(data,j,i); 2X[oge0@
} ahIDKvJ4
} zRa2iCi
insertSort(data,0,1); Q-!gO
} >_xuXEslUz
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/** uO-|?{29
* @param data $_,-ESI
* @param j Bu&9J(J1
* @param i p!8phS#iP
*/ K3<A<&W_-
private void insertSort(int[] data, int start, int inc) { \EU^`o+
int temp; zfE8=d8U
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); <5mv8'{L
} ^-Ygh[x
} !V(r
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} ?pfr^
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} f>$RR_
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快速排序: e8T"d%f?
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package org.rut.util.algorithm.support; *Ow2,{Nn
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import org.rut.util.algorithm.SortUtil; Ncsh{.
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/** R|'W#"{@
* @author treeroot ^e <E/j{~
* @since 2006-2-2 tK .1
*
* @version 1.0 *!JB^5(H
*/ uDXV@;6<
public class QuickSort implements SortUtil.Sort{ Z)$@1Q4P?1
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/* (non-Javadoc) A7%/sMv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '8\9@wzv
*/ ypG*41
public void sort(int[] data) { +0z7}u\x
quickSort(data,0,data.length-1); #T2J +
} nD XEm6|e
private void quickSort(int[] data,int i,int j){ @v^j<B
int pivotIndex=(i+j)/2; K)wWqC.
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SortUtil.swap(data,pivotIndex,j); D>7J[ Yxg-
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int k=partition(data,i-1,j,data[j]); A9 g%>
SortUtil.swap(data,k,j); A"&<$5Q
if((k-i)>1) quickSort(data,i,k-1); R'zi#FeP
if((j-k)>1) quickSort(data,k+1,j); [2Zy~`*y{
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} ;s{'cN[.
/** 0"%dPKi
* @param data q)Nw$dW<
* @param i |u^S}"@3sU
* @param j 7+hF1eoI
* @return <7F-WR/2n
*/ YfB)TK\W9/
private int partition(int[] data, int l, int r,int pivot) { $.,B2} '
do{ {9}CU~R
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); o.A:29KoU
SortUtil.swap(data,l,r); 1<73uR&b%
} pKy4***I3
while(l SortUtil.swap(data,l,r); irD5;xk([
return l; } v:YSG
} bI|G
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} I2}eFz&FE
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改进后的快速排序: 0>7Ij7\[8
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package org.rut.util.algorithm.support; 3MNM<Ih
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import org.rut.util.algorithm.SortUtil; gh?[x.U
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/** jL^@;"/XhC
* @author treeroot =X7kADRq
* @since 2006-2-2 Y06^M?}
* @version 1.0 JOY&YA$U
*/ eN,9N]K
public class ImprovedQuickSort implements SortUtil.Sort { }rfikm
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private static int MAX_STACK_SIZE=4096; Uc {m##!
private static int THRESHOLD=10; )/>BgXwH
/* (non-Javadoc) ;un@E:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +`k30-<P
*/ 7[;!e nO
public void sort(int[] data) { 8.B'O>\T
int[] stack=new int[MAX_STACK_SIZE]; cZ:jht
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int top=-1; oc( '!c
int pivot; #Z2'Y[@.
int pivotIndex,l,r; j9[I6ko5'
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stack[++top]=0; T3zovnR
stack[++top]=data.length-1; n>y,{"J{
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while(top>0){ 0d_)C>gcF
int j=stack[top--]; 6(`N!]e*L
int i=stack[top--]; 8eS(gKD
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pivotIndex=(i+j)/2; I!Z`'1"
pivot=data[pivotIndex]; !2Nk
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SortUtil.swap(data,pivotIndex,j); <C'_:&M
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file://partition
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l=i-1; ~TRC-H
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do{ B&a{,.m&q6
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); +ausm!~6
SortUtil.swap(data,l,r); [_)`G*X(N
} Z?'CS|ud
while(l SortUtil.swap(data,l,r); 3s!6rT_=)d
SortUtil.swap(data,l,j); i86:@/4~F
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if((l-i)>THRESHOLD){ ]H
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stack[++top]=i; OX;(Mg|
stack[++top]=l-1; dRron_'
} ,_kw}_n=
if((j-l)>THRESHOLD){ Qjj }k)
stack[++top]=l+1; c6xr[tc%
stack[++top]=j; 7@;*e=v
} 8IlUbj
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} |:R\j0t
file://new InsertSort().sort(data); `}),wBq
insertSort(data); VAL?
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} #AGO~#aK
/** =Q_1Mr4O
* @param data iP(MDVg
*/ Z5q%L!4G
private void insertSort(int[] data) { .4CDQ&B0K
int temp; %1A8m-u]M
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }U_^zQfaj
} lm4A%4-db
} yQrgOdo,w
} DS(>R!bb
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} Cb+sE"x]
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归并排序: ` 7iA?;
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package org.rut.util.algorithm.support; bPFGQlmIO
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import org.rut.util.algorithm.SortUtil; $Lstq_x+
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/** jv~#'=T'
* @author treeroot M$EF 8
* @since 2006-2-2 { }/
* @version 1.0 y ~
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*/ vX }iA|`#
public class MergeSort implements SortUtil.Sort{ $JOz7j(
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/* (non-Javadoc) %DiQTg7V,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QwhO/
*/ rB+ (
public void sort(int[] data) { y05!-G:Y\
int[] temp=new int[data.length]; T/|!^qLF
mergeSort(data,temp,0,data.length-1); oi0O4J%H
} HHx:s2G
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private void mergeSort(int[] data,int[] temp,int l,int r){ |2^mCL.r
int mid=(l+r)/2; Gk5'|s
if(l==r) return ; MlWKfe<
mergeSort(data,temp,l,mid); zdJPMNHg
mergeSort(data,temp,mid+1,r); ;b [>{Q;
for(int i=l;i<=r;i++){ )2).kL>
temp=data; LkJq Bg
} ZiR}S
int i1=l; h:pgN,W}
int i2=mid+1; l)$mpMgAD
for(int cur=l;cur<=r;cur++){ my sXgS&