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。 *JY`.t
插入排序: iPY vePQ
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package org.rut.util.algorithm.support; nl-t<#z[
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import org.rut.util.algorithm.SortUtil; =SK+\j$
/** bg1"v a#2
* @author treeroot cbu nq"
* @since 2006-2-2 0qL
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* @version 1.0 h%1~v$W`
*/ N5f0|U&
public class InsertSort implements SortUtil.Sort{ Q3Z%a|3W
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/* (non-Javadoc) \at-"[.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o[6vxTH
*/ vTMP&a'5L
public void sort(int[] data) { qb-2QPEB
int temp; bQXc IIa{
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Wd^lt7(j
} B%eDBu
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冒泡排序: N#RD:"RS!
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package org.rut.util.algorithm.support; ?#BZ `H
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import org.rut.util.algorithm.SortUtil; dysX
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/** } g3HoFC
* @author treeroot qE#&)
* @since 2006-2-2 FylWbQU9
* @version 1.0 *=$[}!YG
*/ Wj&<"Z6'm(
public class BubbleSort implements SortUtil.Sort{ _&; ZmNNhc
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/* (non-Javadoc) ER~T'-YMS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3AdP^B<
*/ 0(Y%,q
public void sort(int[] data) { u;+%Qh
int temp; 6?%]odI#
for(int i=0;i for(int j=data.length-1;j>i;j--){ F-$Z,Q]S
if(data[j] SortUtil.swap(data,j,j-1); dr|| !{\
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} uIYcmF\?
} n\Z^K
} U/.w;DI
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} ?gd'M_-J,
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选择排序: H<V+d^qX\w
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package org.rut.util.algorithm.support; 8_"3Yb`f
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import org.rut.util.algorithm.SortUtil; q$MHCq;
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/** ?@_v,,|
* @author treeroot ge^!F>whr
* @since 2006-2-2 536^PcJlN
* @version 1.0 k!Vn4?B"k
*/ {udrT"h
public class SelectionSort implements SortUtil.Sort { P-[fHCg~
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/* >oe4mW
* (non-Javadoc) ])N|[ |$
* TRSOO}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hbVE;
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*/
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public void sort(int[] data) { NU|qX {-
int temp; (})]H:W7
for (int i = 0; i < data.length; i++) { Mx^y>\X)v
int lowIndex = i; kclp}
for (int j = data.length - 1; j > i; j--) { nARxn#<+
if (data[j] < data[lowIndex]) { n49;Z,[~
lowIndex = j; u06tDJ[
} %'$f ?y
} /^d. &@*
SortUtil.swap(data,i,lowIndex); W5pn;u- sz
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} n.@#rBKZ
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Shell排序: z|uOJ0uK
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package org.rut.util.algorithm.support; eUYZxe :6
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import org.rut.util.algorithm.SortUtil; w(/7Jt$
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/** bdCykG-
* @author treeroot x,w8r+~5
* @since 2006-2-2 yXkt:O,i
* @version 1.0 _0w1kqW
*/ `q^(SM
public class ShellSort implements SortUtil.Sort{ %yeu"
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/* (non-Javadoc) [Uswf3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S[Vtq^lU
*/ |0lLl^zp
public void sort(int[] data) { kPW BDpzN
for(int i=data.length/2;i>2;i/=2){ :RHm*vt
for(int j=0;j insertSort(data,j,i); p*Xix%#6
} K6-6{vt
} FzVZs#O
insertSort(data,0,1); lBS"3s384
} g#w`J\iz
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/** k<!<<,Z
* @param data )u<eO FI+
* @param j C B6A}m
* @param i vlvvi()
*/ Cb4_ ?OR0
private void insertSort(int[] data, int start, int inc) { ka/nQ~_#<
int temp; [8.-(-/;
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); I4ebkP gf
} 36nyu_h:R
} ,'=hjIel
} 7q!?1 -?8R
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} 0Yp>+:#
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快速排序: a%v>eXc
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package org.rut.util.algorithm.support; >G&^?5
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import org.rut.util.algorithm.SortUtil; w;~>k%}j
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/** nX )f'[ 7
* @author treeroot ;>8kPG
* @since 2006-2-2 @cPflb
* @version 1.0 Vu%n&uF
*/ YKY2Cw
public class QuickSort implements SortUtil.Sort{ rmsQt
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/* (non-Javadoc) =PZWS&(L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f9a$$nb3`
*/ Zb"jB$58
public void sort(int[] data) { VNO'="U
quickSort(data,0,data.length-1); \X5 3|Y;=
} ';Nu&D#Ph
private void quickSort(int[] data,int i,int j){ St+ "ih%
int pivotIndex=(i+j)/2; :G#KB'
file://swap ?,>5[Ha^?
SortUtil.swap(data,pivotIndex,j); S@Iw;V
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int k=partition(data,i-1,j,data[j]); -R :X<eb
SortUtil.swap(data,k,j); "b`7[ ;a
if((k-i)>1) quickSort(data,i,k-1); Y[@0qc3UO
if((j-k)>1) quickSort(data,k+1,j); jQ|:I7y
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} }3J=DCtS
/** eIJ[0c b}
* @param data I>aGp|4
* @param i 6A?8tm/0
* @param j b)`pZiQP
* @return z0
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*/ T)~!mifX
private int partition(int[] data, int l, int r,int pivot) { cJ2PI
do{ Fm5Q&'`l
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); e1UITjy
SortUtil.swap(data,l,r); |mOMRP#'
} ceG&,a$\
while(l SortUtil.swap(data,l,r); !D;c,{Oz
return l; M*(H)i;s:w
} s4bv;W
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} @Z q[e
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改进后的快速排序: WqQU@sA
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package org.rut.util.algorithm.support; Zi*%*nX
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import org.rut.util.algorithm.SortUtil; j^ nu|
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/** TF2KZL#A|
* @author treeroot F&az":
* @since 2006-2-2 'Wp@b678
* @version 1.0 ?Oc
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*/ ]2$x|#Gg}
public class ImprovedQuickSort implements SortUtil.Sort { oM-[B h]A
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private static int MAX_STACK_SIZE=4096; MUwxgAG`G
private static int THRESHOLD=10; ,hvc``j
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/* (non-Javadoc) E}YIWTX
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4K7{f+T
*/ BIj
public void sort(int[] data) { 7n&yv9"
int[] stack=new int[MAX_STACK_SIZE]; ~OCZz$qA
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int top=-1; zJCEA
int pivot; %*K;np-q{
int pivotIndex,l,r; H1&RI4XC
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stack[++top]=0; Nfaf;;J}
stack[++top]=data.length-1; "dtlME{Bx
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while(top>0){ -N# #w=
int j=stack[top--]; Nog(VN4I&
int i=stack[top--]; $[z<oN_Q
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pivotIndex=(i+j)/2; ~kb{K;
pivot=data[pivotIndex]; 0*yJ %
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SortUtil.swap(data,pivotIndex,j); 8Z8Y[p
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file://partition >nM%p4E
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r=j; [W;[v<E;
do{ 8x{Hg9
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 0>@[o8
SortUtil.swap(data,l,r); 9@y3IiZ"}
} P%)b+H{$h
while(l SortUtil.swap(data,l,r); c;!9 \1sr
SortUtil.swap(data,l,j); %?=)!;[
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if((l-i)>THRESHOLD){ E{>`MNj
stack[++top]=i; `{}@@]
stack[++top]=l-1; ])N%^Qe$U
} R|Y~u* D
if((j-l)>THRESHOLD){ *Hunp Y
stack[++top]=l+1; ea~i-7
stack[++top]=j; fA^SD"xf
} Ef,Cd[]b
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} jVYH;B%%z
file://new InsertSort().sort(data); LdEE+"Jw
insertSort(data); }4h0bI
} VGZ6
/** W4vBf^eC
* @param data o](.368+4
*/ @q)E=G1<o0
private void insertSort(int[] data) { 3cThu43c
int temp; @T7PZB&xnl
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^'W%X
} d?7BxYaa
} |!Ists
} !nzGH*td
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归并排序: kl<g;3
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package org.rut.util.algorithm.support; kzi|$Gs<