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。 W~TT`%[
插入排序: ) \iOwA
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package org.rut.util.algorithm.support; R4?OFhN9
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import org.rut.util.algorithm.SortUtil; yNwYP%"y
/** #i#4h<R
* @author treeroot @0XqUcV
* @since 2006-2-2 k"J[mT$b
* @version 1.0 Tug}P K
*/ =bVaB<!
public class InsertSort implements SortUtil.Sort{ >
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/* (non-Javadoc) ]yTMWIx#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ [&Kn&bdKW
public void sort(int[] data) { kF09t5Lr
int temp; D@M
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Anpx%NVo
} ~AD%aHR
} F?+K~['i
} w(sD}YA)
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冒泡排序: Bf&,ACOf
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package org.rut.util.algorithm.support; gC}r$ZB(
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import org.rut.util.algorithm.SortUtil; JN9
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/** CC(At.dd
* @author treeroot 1NP(3yt%
* @since 2006-2-2 _x.!,
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* @version 1.0 [OH9/"
*/ t)yWQV
public class BubbleSort implements SortUtil.Sort{ 1>JUI5 {
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/* (non-Javadoc) '?q \mi
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _L?`C
*/ 0?D`|x_
public void sort(int[] data) { g3p*OYf
int temp; Q%.V\8#|V
for(int i=0;i for(int j=data.length-1;j>i;j--){ Kr$ w"]
if(data[j] SortUtil.swap(data,j,j-1); ~w<u!
} :R/szE*Ak
} kIHfLwh9N
} ,ux?wa+
} 4M)
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} __}j
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选择排序: 99'e)[\
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package org.rut.util.algorithm.support; ,tdV-9N[O
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import org.rut.util.algorithm.SortUtil; ={Bcbj{
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/** +w~<2Kt8
* @author treeroot pw^$WK
* @since 2006-2-2 WU:~T.Su
* @version 1.0 [L.+N@M
*/ [4V{~`sF
public class SelectionSort implements SortUtil.Sort { [25[c><:w"
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/* LwpO_/qV
* (non-Javadoc) DKd:tL24&
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Fdgu=qMm
*/ M.|@|If4?
public void sort(int[] data) { ?Y:>Ouv*z'
int temp; 3},0b8};
for (int i = 0; i < data.length; i++) { 58x=CN\QU
int lowIndex = i; HZp}<7NR(7
for (int j = data.length - 1; j > i; j--) { ,KXS6:1%5Y
if (data[j] < data[lowIndex]) { {> T
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lowIndex = j; }O_kbPNw
} K{eq'F5M
} 7Eoa~
SortUtil.swap(data,i,lowIndex); +,` Cv_O
} ]>E)0<t
} D0 'L
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} #0K122oY
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Shell排序: Pr
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package org.rut.util.algorithm.support; ]a4rA+NFLB
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import org.rut.util.algorithm.SortUtil; Qh4@Nl#Ncf
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/** Ks|qJ3;
* @author treeroot DnbT<oEL
* @since 2006-2-2 [If%+mHdU
* @version 1.0 -;5WMX6
*/ AE1EZ#
public class ShellSort implements SortUtil.Sort{ (*{Y#XD{
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/* (non-Javadoc) 'CE3
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EbEQ@6t
*/ "E4;M/
public void sort(int[] data) { !j'9>G{T
for(int i=data.length/2;i>2;i/=2){ >/,7j:X
for(int j=0;j insertSort(data,j,i); PuKT0*_ 7
} OEz'&))J
} (9!$p|d*
insertSort(data,0,1); A*;I}F
} _wMc7`6F
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/** 84xA/BR W
* @param data F` /mcyf
* @param j =o g5Mh,
* @param i x|>N
*/ gIGyY7{(s8
private void insertSort(int[] data, int start, int inc) { ~s#vP<QHa
int temp; wR)U&da`@
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); tO0MYEx"
} A 9I5
} ZCdlTdY
} i98>=y~
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快速排序: Q-scL>IkCb
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package org.rut.util.algorithm.support; &NvvaqJ
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import org.rut.util.algorithm.SortUtil; a?_!
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/** #$vQT}
* @author treeroot 0)@7$Xhf
* @since 2006-2-2 rA<>k/a
* @version 1.0 *>m,7} L
*/ PtfxF]%H
public class QuickSort implements SortUtil.Sort{ [^oTC;
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/* (non-Javadoc) jc%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %}T' 3
*/ lB7 V4
public void sort(int[] data) { -&L(0?*qo
quickSort(data,0,data.length-1); 7w}PYp1Z'~
} N0]C?+
private void quickSort(int[] data,int i,int j){ /z'fFl^6O
int pivotIndex=(i+j)/2; *@2+$fgz
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SortUtil.swap(data,pivotIndex,j); = JE4C9$,
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int k=partition(data,i-1,j,data[j]); w(>mP9Cb
SortUtil.swap(data,k,j); 33O O%rWi
if((k-i)>1) quickSort(data,i,k-1); y7iHB
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if((j-k)>1) quickSort(data,k+1,j); $2tPqZ>
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} NeG$;z7
/** y(^hlX6gQ
* @param data Or {9?;G
* @param i -0pAj}_2}
* @param j MST\_s%[
* @return mpsi{%gA
*/
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private int partition(int[] data, int l, int r,int pivot) { =g]Ln)jc
do{ R
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Z@Tb3N/[
SortUtil.swap(data,l,r); p#k>BHgnF
} gb_r <j:w
while(l SortUtil.swap(data,l,r); @;^7kt
return l; |.asg
} #CRAQ#:45(
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} zO@7V>2
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改进后的快速排序: U};~ff+
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package org.rut.util.algorithm.support; )/32sz]~
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import org.rut.util.algorithm.SortUtil; =_\+6\_
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/** W
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* @author treeroot h'QEwW
* @since 2006-2-2
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* @version 1.0 B#zu<z
*/ EZN38T
public class ImprovedQuickSort implements SortUtil.Sort { 0j'H5>m"
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private static int MAX_STACK_SIZE=4096; 0 It[Pa qG
private static int THRESHOLD=10; D%WgE&wtM
/* (non-Javadoc) m VSaC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Or({|S9d2
*/ {? a@UUvC
public void sort(int[] data) { l(o;O.dLt
int[] stack=new int[MAX_STACK_SIZE]; %.NOQ<@W
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int top=-1; :)djHPP*
int pivot; kdr?I9kwW
int pivotIndex,l,r; !F^j\
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stack[++top]=0; Xp_3EQl
stack[++top]=data.length-1; *>=|"ff
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while(top>0){ yf lt2 R
int j=stack[top--]; bwr}Ge
int i=stack[top--]; &,4 3&pFU
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pivotIndex=(i+j)/2; "OdR"M(G\
pivot=data[pivotIndex]; ~F{u4p7{N
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SortUtil.swap(data,pivotIndex,j); QH)uh"
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file://partition ZysZS%
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r=j; W-72&\7
do{ iC$mb~G
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); r+#! ]wNPe
SortUtil.swap(data,l,r); y*f5_
} Q?1'
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while(l SortUtil.swap(data,l,r); S4'\=w#
SortUtil.swap(data,l,j); 8J5{}4s\f
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if((l-i)>THRESHOLD){ CO)BF%?B
stack[++top]=i; L\`uD[g
stack[++top]=l-1; XBTtfl
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} {H\(H_X
if((j-l)>THRESHOLD){ >$%rs c}^
stack[++top]=l+1; Os9;;^k
stack[++top]=j; D>HX1LV
} qi ;X_\v
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} _&]B
file://new InsertSort().sort(data); PX5K-|R
insertSort(data); Dej2-Y
} & rsNB:!
/** 8/tvS8I#y
* @param data _NkVi_UX
*/ 9=-d/y?
private void insertSort(int[] data) { qYwEPGa\
int temp; O<:"Irq\qr
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [|:kS
} *j`{ K
} @~Uu]1
} qMHI-h_A
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} #RyX}t X,
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归并排序: ]V `L\
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package org.rut.util.algorithm.support; <c X\|dM
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import org.rut.util.algorithm.SortUtil; 3T<aGW1
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