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。 au@ LQxKQ
插入排序: f.JZ[+
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package org.rut.util.algorithm.support; ye:pGa w
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import org.rut.util.algorithm.SortUtil; e:fp8 k<
/** 91qk0z`N
* @author treeroot PElC0qCn[
* @since 2006-2-2 <cNXe4(
* @version 1.0 WSi`)@.XO
*/ J(JsfU4
public class InsertSort implements SortUtil.Sort{ G3'>KMa.
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/* (non-Javadoc) ^e:C{]S=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 59!yz'feF
*/ t~ruP',~\
public void sort(int[] data) { $}V<Um
int temp; y=g9 wO
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Z"#eN(v.N
} l9KLP
} }IO<Dq=[
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冒泡排序: "X0"=1R~
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package org.rut.util.algorithm.support; Hy^Em
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import org.rut.util.algorithm.SortUtil; QEKSbxL\W
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/** BLZ#vJR
* @author treeroot 6r!
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* @since 2006-2-2 4
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* @version 1.0 }P(RGKQZ"
*/ :xJ]#
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public class BubbleSort implements SortUtil.Sort{ qX{"R.d
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/* (non-Javadoc) (XA=d
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R,R[.2Vi
*/ Cw42bO
public void sort(int[] data) { 7K.&zn
int temp; J!5BH2bg
for(int i=0;i for(int j=data.length-1;j>i;j--){ %|E'cdvkX
if(data[j] SortUtil.swap(data,j,j-1); _Z?{&k
} `q|&;wP.
} mAMi-9
} **_`AM~
} JLUG=x(dA
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} ?3X!
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选择排序: pYZ6-s
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package org.rut.util.algorithm.support; Atl`J.;G
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import org.rut.util.algorithm.SortUtil; !`=ms1%U
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/** KiW4>@tY
* @author treeroot #:C;VAAp
* @since 2006-2-2 ASmMj;>UM
* @version 1.0 F x,08
*/ ~f=~tN)hZ
public class SelectionSort implements SortUtil.Sort { !<r+h,C
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/* ah<1&UG,
* (non-Javadoc)
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* T'\B17
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !OWPwBm;
*/ 'F%4[3a$\n
public void sort(int[] data) {
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int temp; vvA=:J4/i)
for (int i = 0; i < data.length; i++) { (t&]u7Atr
int lowIndex = i; 06DT2
for (int j = data.length - 1; j > i; j--) { }
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if (data[j] < data[lowIndex]) { ].F7.
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lowIndex = j; @_"B0$,-i
} :#D?b.=
} Vp8t8X1`
SortUtil.swap(data,i,lowIndex); s2f95<B
} J)1:jieQ
} ~^d. zIN!
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Shell排序: m|q?gX9R
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package org.rut.util.algorithm.support; n8<o*f&&9>
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import org.rut.util.algorithm.SortUtil; n\d`Fk
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/** [MSLVTR
* @author treeroot 'J^ M`/
* @since 2006-2-2 bwh7.lDAl
* @version 1.0 s ^NO(
*/ pR_cI]{=SA
public class ShellSort implements SortUtil.Sort{ FTM(y CN
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/* (non-Javadoc) dw
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f[,9WkC
*/ %Q]u_0P*
public void sort(int[] data) { lfjY45=
for(int i=data.length/2;i>2;i/=2){ yXU-@~
for(int j=0;j insertSort(data,j,i); y,qP$5xiq
} bqugo
} s2Gi4fY?
insertSort(data,0,1); Y.I-hl1<r
} zJ{?'kp
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/** {\-rZb==F2
* @param data !NWz
* @param j B;9"=0
* @param i )"?6Es SF
*/ qz7:jq3N-{
private void insertSort(int[] data, int start, int inc) { JFaxxW
int temp; cBf9-k
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ;t!n%SnK9!
} w0QN5?
} e&[gde(
} xe^*\6Y
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} \)'nxFKqV
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快速排序: Z09FW>"u
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package org.rut.util.algorithm.support; jvx9b([<sG
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import org.rut.util.algorithm.SortUtil; 216+ tX5Z
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/** 4 -)'a} O
* @author treeroot T1zft#1~
* @since 2006-2-2 Ta #vD_QP
* @version 1.0 u#5/s 8
*/ FFXDt"i2
public class QuickSort implements SortUtil.Sort{ SNP.n))
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/* (non-Javadoc) h&4ufx6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kN uDoo]z
*/ x4v@Kk/
public void sort(int[] data) { w+VeT @
quickSort(data,0,data.length-1); 8+vZ9!7
} ?]gZg[
private void quickSort(int[] data,int i,int j){ @C)O[&Sk
int pivotIndex=(i+j)/2; lhg3
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SortUtil.swap(data,pivotIndex,j); E_&Hje|J_[
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int k=partition(data,i-1,j,data[j]); 9fD4xkRS
SortUtil.swap(data,k,j); )/k0*:OMyO
if((k-i)>1) quickSort(data,i,k-1); 0z?b5D;
if((j-k)>1) quickSort(data,k+1,j); QFoZv+|
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} XfA3Ez,}
/** E/cA6*E[.<
* @param data 70_T;K6
* @param i CCKg,v
* @param j G%)?jg@EA
* @return >Bp%~8f
*/ GypZ!)1
private int partition(int[] data, int l, int r,int pivot) { 8xhXS1
do{ GZT}aMMSJ
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); PpMZ-f@
SortUtil.swap(data,l,r); '|^LNAx
} dJ\6m!Mp
while(l SortUtil.swap(data,l,r); g!n1]- 1
return l; ,oe
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} -Hzn7L
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改进后的快速排序: qG"|,bA
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package org.rut.util.algorithm.support; }@yvw*c
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import org.rut.util.algorithm.SortUtil; Hxr2Q]c?u
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/** }yqRz6=YB
* @author treeroot Bc}<B:q%b
* @since 2006-2-2 `7jm
* @version 1.0 Fk D
*/ mOwgk7s[J
public class ImprovedQuickSort implements SortUtil.Sort { :NU-C!eT
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private static int MAX_STACK_SIZE=4096; Qo
private static int THRESHOLD=10; rh2pVDS
/* (non-Javadoc) FW7+!A&F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ff>Y<7CQ
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*/ pH#&B_S6z=
public void sort(int[] data) { hM
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int[] stack=new int[MAX_STACK_SIZE]; :b>Z|7g ?
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int top=-1; n? "ti
int pivot; .G+}Kn9!
int pivotIndex,l,r; ~l!(I-'?g
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stack[++top]=0; x6HebIR+
stack[++top]=data.length-1; nzy =0Ox[
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while(top>0){ QxnP+U~N
int j=stack[top--]; 3DK^S2\zBm
int i=stack[top--]; o!mfd}nG
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pivotIndex=(i+j)/2; 8DTk<5mW~
pivot=data[pivotIndex]; 1W~-C B>
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SortUtil.swap(data,pivotIndex,j); 0!=e1_
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file://partition f[7'kv5S
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r=j;
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do{ !N$4.slr<p
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); =D5@PHpv(
SortUtil.swap(data,l,r); p@i U}SUaE
} X2@mQ&n
while(l SortUtil.swap(data,l,r); w GZ(bKyO
SortUtil.swap(data,l,j); =\4w" /Y
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if((l-i)>THRESHOLD){ 7~\Dzcfk"P
stack[++top]=i; NOyLZa'
stack[++top]=l-1; zq!2);,
} $Fz/&;KX!
if((j-l)>THRESHOLD){ !Go(8`>
stack[++top]=l+1; VK`_Qc#B
stack[++top]=j; W3UK[_qK
} CW\o>yh
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} =@pm-rI|-
file://new InsertSort().sort(data); 2DQ'h}BI
insertSort(data); yE9JMi0
} 6(9Ta'ywZ
/** 1@)]+* F*z
* @param data gbpm::
*/ k6JB%m\E
private void insertSort(int[] data) { 8e\a_R*(|
int temp; i`&