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。 8/i!' 0r\
插入排序: h]+C.Eqnt#
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package org.rut.util.algorithm.support; -(bXSBs#
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import org.rut.util.algorithm.SortUtil; -+ SF
/** - }7e:!.
* @author treeroot ej4W{IN~:
* @since 2006-2-2 {QHVo#
* @version 1.0 l6YtEHNG
*/ /^X/ 8
public class InsertSort implements SortUtil.Sort{ y#Fv+`YDl
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/* (non-Javadoc) f&eK|7J_Yf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WG6FQAo^8
*/ W-x?:X<}
public void sort(int[] data) { \
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int temp; \m7-rV6r
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Qy^1*j<@&
} 4L ;% h
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冒泡排序: o<<xY<
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package org.rut.util.algorithm.support; )PG6gZYW
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import org.rut.util.algorithm.SortUtil; A<5ZF27
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/** IE;~?W"
* @author treeroot _hRcc"MS`
* @since 2006-2-2 f!oT65Vmi
* @version 1.0 %+8F'&X
*/ P_?gq>E8
public class BubbleSort implements SortUtil.Sort{ ,TXTS*V?
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/* (non-Javadoc) C ~<'rO}|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c(:f\Wc3Z
*/
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public void sort(int[] data) { &u /Nf&A
int temp; 1Ty<\bZ=
for(int i=0;i for(int j=data.length-1;j>i;j--){ 56+s~hG
if(data[j] SortUtil.swap(data,j,j-1); Y?
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} xIxn"^'
} sm0x LZ
} ]w;rfn9D
} -~v|Rt
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选择排序: biSz?DJ>
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package org.rut.util.algorithm.support; zo +nq%=
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import org.rut.util.algorithm.SortUtil; bu:S:`
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/** kSR\RuY*
* @author treeroot 8Eakif0CO
* @since 2006-2-2 ;pqg/>W'
* @version 1.0 PJ]];MQ
*/ ZAv,*5&<
public class SelectionSort implements SortUtil.Sort { 3&u&x(
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/* n#q<`}u,
* (non-Javadoc) *pAV2V(!23
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IPgt|if^
*/ .QA }u ,EN
public void sort(int[] data) {
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int temp; |?qquD 4=
for (int i = 0; i < data.length; i++) { }._eIx"
int lowIndex = i; A6:es_
for (int j = data.length - 1; j > i; j--) { 3pv4B:0
if (data[j] < data[lowIndex]) { O-LO/*5MI
lowIndex = j; ` D= S{
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} <F}_ /q1
SortUtil.swap(data,i,lowIndex); 5Yl<h)1
} RoU55mL
} #9X70|f
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} o
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Shell排序: D+>4AqG
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package org.rut.util.algorithm.support; Z&|Kki*
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import org.rut.util.algorithm.SortUtil; {B[=?6tQ
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/** P"W2(d
* @author treeroot &;+-?k|
* @since 2006-2-2 KVD8YfF
* @version 1.0 [-\%4
*/ ^:#D0[
public class ShellSort implements SortUtil.Sort{ h{ AII
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/* (non-Javadoc) MC<PM6w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W}5xmz
*/ T(t+
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public void sort(int[] data) { A<1hOSCz\
for(int i=data.length/2;i>2;i/=2){ n}'=yItVL1
for(int j=0;j insertSort(data,j,i); vU767/
} 95YL]3V
} %]>KvoA
insertSort(data,0,1); pgOQIzu
} KO]T<R
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/** +tVaBhd!
* @param data So0f)`A
* @param j ;~"FLQg@
* @param i 5<UVD:~z
*/ s (zL
private void insertSort(int[] data, int start, int inc) { gREzZ+([
int temp; ig/%zA*Bo
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); S,Xnzrz
} ?)u@Rf9>
} CaL\fZ
} G5CI<KRK#
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} @>p<3_Y1
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快速排序: fZ*+2T>
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package org.rut.util.algorithm.support; s;3= {e.
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import org.rut.util.algorithm.SortUtil; ^~3SSLS4"
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/** ~S8* t~
* @author treeroot !t gi
* @since 2006-2-2 >U%gctIg
* @version 1.0 9 D7+[`r(-
*/ i'#E)
public class QuickSort implements SortUtil.Sort{ xO&eRy?%
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/* (non-Javadoc) \3pc"^W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /7}It$|nhy
*/ [[;e)SoA
public void sort(int[] data) { 6f\Lf?vF
quickSort(data,0,data.length-1); 0a}u;gt,4w
} jpO7'ivG
private void quickSort(int[] data,int i,int j){ {&\jW!&n
int pivotIndex=(i+j)/2; =5kY6%E7c
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SortUtil.swap(data,pivotIndex,j); OoA|8!CFa
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int k=partition(data,i-1,j,data[j]); Q$="_y2cTA
SortUtil.swap(data,k,j); hM{{\yZS
if((k-i)>1) quickSort(data,i,k-1); yF"1#{*y
if((j-k)>1) quickSort(data,k+1,j); =y0C1LD+
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} JV]^zW
/** OH">b6>\
* @param data ?XA2&
* @param i /f|X(docI
* @param j :9^;Qv*
* @return bdQ_?S(
*/ wid;8%m
private int partition(int[] data, int l, int r,int pivot) { rvXWcu -"
do{ !V
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); SjwyLc
SortUtil.swap(data,l,r); cp#JBHO
} A?-oL='
while(l SortUtil.swap(data,l,r); yIDD@j=l
return l; \}p6v }
} ( 5tvfz%
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} 6~1|qEe6I
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改进后的快速排序: y0'Rmk,
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package org.rut.util.algorithm.support; vK_?<>
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import org.rut.util.algorithm.SortUtil; A-T]9f9
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/** V3c l~
* @author treeroot
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* @since 2006-2-2 E#ul IgD
* @version 1.0 &?*V0luP)
*/ %jJ>x3$F
public class ImprovedQuickSort implements SortUtil.Sort { 9hOJvQ2U]
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private static int MAX_STACK_SIZE=4096; J|w\@inQ
private static int THRESHOLD=10; V>A.iim
/* (non-Javadoc) -Xxqm%([71
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x)rM/Kq
*/ {j:hod@-:5
public void sort(int[] data) { W!?7D0q
int[] stack=new int[MAX_STACK_SIZE]; bpKZ3}U
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int top=-1; ;)!Sp:mHX
int pivot; b0Kc^uj5
int pivotIndex,l,r; m6',SY9T
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stack[++top]=0; Cb9;QzBVA#
stack[++top]=data.length-1; p' +
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while(top>0){ *
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int j=stack[top--]; {a4z2"\A
int i=stack[top--]; )0Me?BRp
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pivotIndex=(i+j)/2; 20Z8HwQi
pivot=data[pivotIndex]; b#K:_ac5
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SortUtil.swap(data,pivotIndex,j); K)\M5id]
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file://partition !!`!|w
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do{ _g~qu
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); yp66{o
SortUtil.swap(data,l,r); {3.r6ZwCn
} OU/MiyP2
while(l SortUtil.swap(data,l,r); xYhrO
SortUtil.swap(data,l,j); j{Txl\D>
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if((l-i)>THRESHOLD){ m"o ;L3
stack[++top]=i; q~*t@
stack[++top]=l-1; V}SBuQp"
} -eN\ !
if((j-l)>THRESHOLD){ uwjGDw
stack[++top]=l+1; `kU/NKq
stack[++top]=j; \U[{z&]~
} =9"W@n[>W
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} hNd}Y'%V
file://new InsertSort().sort(data); lhw()u
insertSort(data); wAxrc+
} lhw ,J]0*
/** I+dbZBX
* @param data FKT1fv[H
*/ ui@2s;1t
private void insertSort(int[] data) { N9vP7
int temp; .] sf0S!
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); rwG CUo6Z
} 86\S?=J-b
} 4qYUoCR&
} U
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} Fm #w2o
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归并排序: r%.do;5
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package org.rut.util.algorithm.support; |"9 #bU
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import org.rut.util.algorithm.SortUtil; ]@0NO;bK>F
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/** 4y5UkU9|
* @author treeroot )JNSZB
* @since 2006-2-2 Ldl5zc
* @version 1.0 y!!E\b=
*/ E
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