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。 _5m }g!
插入排序: GC\/B0!
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package org.rut.util.algorithm.support; xRY5[=97
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import org.rut.util.algorithm.SortUtil; ?@#}%<yEq
/** Ys_YjlMIbl
* @author treeroot P~qVr#eU
* @since 2006-2-2 &"kx(B
* @version 1.0 0 j.Sb2
*/ {PVu3W
public class InsertSort implements SortUtil.Sort{ ,){0y%c#y
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/* (non-Javadoc) ibuI/VDF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |"-,C}O
*/ ~Op1NE
public void sort(int[] data) { Q]7Q
int temp; 2DC#PX)i
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `P5"5N\h
} .~U9*5d
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冒泡排序: \O:xw-eG
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package org.rut.util.algorithm.support; h^0mjdSp,
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import org.rut.util.algorithm.SortUtil; !qpu /
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/** S }n;..{
* @author treeroot 0@Ijk(|
* @since 2006-2-2 |d 3agfS[n
* @version 1.0 *Z:PB%d5
*/ (>K$gAQH
public class BubbleSort implements SortUtil.Sort{ L&N"&\K2U
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/* (non-Javadoc) 'oHR4O*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _Nn!SE
*/ 709eLhXrH
public void sort(int[] data) { =R'v]SXj
int temp; mCGcM^21-x
for(int i=0;i for(int j=data.length-1;j>i;j--){ uf^:3{1
if(data[j] SortUtil.swap(data,j,j-1); ".)_kt[
} O$H150,Q
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} .HBvs=i
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选择排序: xB(:d'1|
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package org.rut.util.algorithm.support; 6b/b}vl
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import org.rut.util.algorithm.SortUtil; ]1&9~TL
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/** I5L7BTe
* @author treeroot #I?iR3u
* @since 2006-2-2
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* @version 1.0 >>$|,Q-.
*/ [tzSr=,Cg
public class SelectionSort implements SortUtil.Sort { %)9]dOdOk
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/* x5SQ+7
* (non-Javadoc) V</T$V$
* >u)ZT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ )!d1<p3
public void sort(int[] data) { s.sy7%{
int temp; 9>R|k$`
for (int i = 0; i < data.length; i++) { 6EU4
int lowIndex = i; 'D&G~$
for (int j = data.length - 1; j > i; j--) { Qm#i"jvV
if (data[j] < data[lowIndex]) { v)yimIHzo
lowIndex = j; WQpJd7
} :6?&FzD`
} / D ]B
SortUtil.swap(data,i,lowIndex); 2]9<%-=S
} U_- K6:tr
} 1[l>D1F?
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} HzV+g/8>A
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Shell排序: M@g
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package org.rut.util.algorithm.support; wWw/1i:|'
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import org.rut.util.algorithm.SortUtil; A{2$hKqHi
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/** vB5iG|b}
* @author treeroot #`4^zU)
* @since 2006-2-2 t4@g;U?o
* @version 1.0 6\Vu#r
*/ j dhml%pAd
public class ShellSort implements SortUtil.Sort{ f#kevf9zc
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/* (non-Javadoc) pqN[G=0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uS#Cb+*F
*/ )[sO5X7'^
public void sort(int[] data) { {H;|G0tR
for(int i=data.length/2;i>2;i/=2){ t!SQLgA
for(int j=0;j insertSort(data,j,i); pMp9O/u%
} 3Z:!o$
} htYrv5q=M
insertSort(data,0,1); a<'$` z|s
} -0SuREn
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/** 4sBoD=e
* @param data 5?L:8kHsH
* @param j f_h"gZWV
* @param i )75yv<L2S,
*/ ]8>UII ,US
private void insertSort(int[] data, int start, int inc) { 37-y
int temp; SP7g qM
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); "tB"j9Jb
} ~_db<!a
} P .4b+9Tx
} L*01l"5
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快速排序: ^Pg
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package org.rut.util.algorithm.support; @\`G & VB
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import org.rut.util.algorithm.SortUtil; DgT.Lku?
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/** ]a!; `m$
* @author treeroot T:%wX9W
* @since 2006-2-2 Xb@z7X#O!
* @version 1.0 FP9<E93br
*/ gQd=0"MV
public class QuickSort implements SortUtil.Sort{ d<GG(
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/* (non-Javadoc) hf^`at
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FR,#s^kF
*/ k\&IFSp
public void sort(int[] data) { <<On*#80w
quickSort(data,0,data.length-1); 0S:!Gv+
} qVD!/;l
private void quickSort(int[] data,int i,int j){ 5;MK1l
int pivotIndex=(i+j)/2; [{p?BTs
file://swap 0tm_}L$g=b
SortUtil.swap(data,pivotIndex,j); 4a.e
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int k=partition(data,i-1,j,data[j]); mGpkM?Y"
SortUtil.swap(data,k,j); 0SCW2/o8
if((k-i)>1) quickSort(data,i,k-1); (zJ$oRq
if((j-k)>1) quickSort(data,k+1,j); Pv %vx U
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} yCkW2p]s,K
/** %{~mk[d3
* @param data -?w v}o
* @param i zNr_W[
* @param j <aSLm=
* @return _h=<_Z
*/ MZMS?}.2
private int partition(int[] data, int l, int r,int pivot) { xK),:+G(
do{ S,Wl)\
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); oF b mz*
SortUtil.swap(data,l,r); 1Q&WoJLfR
} `b#nC[b6|v
while(l SortUtil.swap(data,l,r); X:SzkkVl7
return l; 18p3
} U??f<
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} u5XU`!
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改进后的快速排序: `YmI'
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package org.rut.util.algorithm.support; )'
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import org.rut.util.algorithm.SortUtil; \|pK Z6*s
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/** W:{PBb"x8
* @author treeroot !w#ru?L{
* @since 2006-2-2 1f@U:<:
* @version 1.0 uWR,6\_jY
*/ HDSA]{:sl
public class ImprovedQuickSort implements SortUtil.Sort { bV )PT`-,
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private static int MAX_STACK_SIZE=4096; i^sDh>$J
private static int THRESHOLD=10; qSC~^N`
/* (non-Javadoc) f}lT|.)?VD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DA4edFAuE
*/ 'x45E.wYw
public void sort(int[] data) { U8WHE=Kk\h
int[] stack=new int[MAX_STACK_SIZE]; ))CXjwLj;
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int top=-1; n$m]58w
int pivot; ??\*D9rCn
int pivotIndex,l,r; iUxDEt[t*
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stack[++top]=0; ,p*ntj{
stack[++top]=data.length-1; 59Tg"3xB<
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while(top>0){ [!:-m61
int j=stack[top--]; `hK>bHj
int i=stack[top--]; =N*%f%
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pivotIndex=(i+j)/2; 5}X<(q(
pivot=data[pivotIndex]; anz9lGG#
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SortUtil.swap(data,pivotIndex,j); V
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file://partition i^yH?bH @~
l=i-1; 2{sD*8&`
r=j; 0$f_or9T
do{ G&%nF4
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); liugaRO8J
SortUtil.swap(data,l,r); gc,J2B]61
} y,y/PyN)
while(l SortUtil.swap(data,l,r); u"#6_-0y
SortUtil.swap(data,l,j); o&hKg#nO83
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if((l-i)>THRESHOLD){ Z/NGv
stack[++top]=i; 1C}pv{0:&
stack[++top]=l-1; z,}c?BP
} EDq$vB
if((j-l)>THRESHOLD){ P^K?E
stack[++top]=l+1; "LP,
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stack[++top]=j; M!&_qj&N,
} H IPcZ!p
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} |c06ix;).
file://new InsertSort().sort(data); <4l.s
insertSort(data); Qr|N)
} I8<Il^
/** Giy3eva2
* @param data y"|K
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*/ (E"&UC[
private void insertSort(int[] data) { Vp(D|}P
int temp; 8m/FKO (r
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0$xK
} B91S
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} Pp1zW3+Q
} {(m+M
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} ;PfeP;z
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归并排序: 2A*X Hvwb
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package org.rut.util.algorithm.support; ;xW8Z<\-
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import org.rut.util.algorithm.SortUtil; ?Kx6Sf<i
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/** 0v_6cYA
* @author treeroot 8X}^~ e
* @since 2006-2-2 45Nv_4s
* @version 1.0 _dYf
*/ P3wU#qU
public class MergeSort implements SortUtil.Sort{ Z-^uM`],G
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/* (non-Javadoc) ,h%D4EVx
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '2Q.~6
*/ J<