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。 wqF_hs(O
插入排序: >f:OU,"
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package org.rut.util.algorithm.support; CPLsSv5
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import org.rut.util.algorithm.SortUtil; vxk~(3]<)
/** C[[:/X(c
* @author treeroot 3a?dNwM@
* @since 2006-2-2 -uhg7N[3
* @version 1.0 v9GfudTZR
*/ om1D} irKT
public class InsertSort implements SortUtil.Sort{ 0[92&:c,
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/* (non-Javadoc) +-PFISa<r
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O6b.oS'-
*/ %TDY &@i=
public void sort(int[] data) { 9)S,c=z83
int temp; Vy+kq_9
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }_h2:^n
} ,h},jkY4
} \os"j
} 1v'|%B;O
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冒泡排序: xP5Z -eL
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package org.rut.util.algorithm.support; J8@7
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import org.rut.util.algorithm.SortUtil; %5Zhq>
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/** n=%D}W
* @author treeroot a9p6[qOcd
* @since 2006-2-2 l*|m(7s
* @version 1.0 :Y[?@/m4
*/ hEfFMi=a`
public class BubbleSort implements SortUtil.Sort{ ngl8) B
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/* (non-Javadoc) ^dRgYi"(A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wQrD(Dv(yA
*/ wiM-TFT~
public void sort(int[] data) { !UX7R\qu|
int temp; FK,Jk04on
for(int i=0;i for(int j=data.length-1;j>i;j--){ wbbr8WiU
if(data[j] SortUtil.swap(data,j,j-1); x}jiHV@=
} F=V_ACU
} pTE.,~-J^j
} B0ZLGB
} %VGQ{:
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} Wq/0 }W.
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选择排序: r95$( N
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package org.rut.util.algorithm.support; rE4qPzL
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import org.rut.util.algorithm.SortUtil; y9-}LET3j
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/** kg()C%#u
* @author treeroot |&\cr\T\r
* @since 2006-2-2 l1D"*J 2`
* @version 1.0 DTM
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*/ h 7*#;j
public class SelectionSort implements SortUtil.Sort { F1b~S;lm
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/* 'Q4V(.
* (non-Javadoc) rtk1 8U-
* j(`V&S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZN-5W|' O
*/ Yf[GpSej
public void sort(int[] data) { ~n9-
int temp; 1"
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for (int i = 0; i < data.length; i++) { zHt}`>y&
int lowIndex = i; 1/vcj~|)t
for (int j = data.length - 1; j > i; j--) { zK ir
if (data[j] < data[lowIndex]) {
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lowIndex = j; GFO(O
} #)28ESj
} : t6.J
SortUtil.swap(data,i,lowIndex); /rmm@
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} Xd@x(T~'X
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Shell排序: tC'@yX
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package org.rut.util.algorithm.support; MDh^ic5
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import org.rut.util.algorithm.SortUtil; '/K-i.8F
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/** m~l[Y
* @author treeroot x\!Uk!fM
* @since 2006-2-2 jBnvu@K "
* @version 1.0 x#&%lJT
*/ rw]*Nxgr
public class ShellSort implements SortUtil.Sort{ ]{E{ IW8
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/* (non-Javadoc) ^f bw0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <P)0Y u
*/ J3#
public void sort(int[] data) { , K[}Bz
for(int i=data.length/2;i>2;i/=2){ parc\]M
for(int j=0;j insertSort(data,j,i); AHtLkfr(r
} Q7@
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} qaN%&K9F8
insertSort(data,0,1); oB]
} U0t~H{-H
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/** >aV
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* @param data H:&|q+K=#
* @param j >XiTl;UU
* @param i ]aVFWzey
*/ mtu`m6Xix
private void insertSort(int[] data, int start, int inc) { V;t8v\
int temp; $l!+SLK
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); D_4UM#Tw
} dr8`;$;G*
} nolLeRE1
} ~i)IY1m"
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} jM DG
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快速排序: YQk<1./}I
SUQk0 (M
package org.rut.util.algorithm.support; >"q~9b
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import org.rut.util.algorithm.SortUtil; tZn=[X~Vw@
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/** }I;5yk,o
* @author treeroot ><Z`)}f
* @since 2006-2-2 ;p}X]e l}
* @version 1.0 0/Wo":R:
*/ LVX01ox$
public class QuickSort implements SortUtil.Sort{ p .^#mN
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/* (non-Javadoc) T2V#
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iSz?V$}?
*/ 'aoHNZfxw
public void sort(int[] data) { qf2;yRc&
quickSort(data,0,data.length-1); q[w.[]
} .^J7^Ky,
private void quickSort(int[] data,int i,int j){ d5ivtK?
int pivotIndex=(i+j)/2; yAt,XG3
file://swap \.7O0Q{
SortUtil.swap(data,pivotIndex,j); zxt&oT0Q
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int k=partition(data,i-1,j,data[j]); <M4Qc12jP
SortUtil.swap(data,k,j); KoPhPH
if((k-i)>1) quickSort(data,i,k-1); (}C%g{8
if((j-k)>1) quickSort(data,k+1,j); v<qiu>sbz}
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} EL[N%M3
/** 9O/l{
* @param data M;i4ss,}!
* @param i z
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* @param j #FfUkV
* @return :6Q`! in
*/ 4vk^=
private int partition(int[] data, int l, int r,int pivot) { cPgz?,hE
do{ 0Tm"Zh?B|
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ja2PmPv
SortUtil.swap(data,l,r); TdAHw
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} -UM5&R+o
while(l SortUtil.swap(data,l,r); !Y3
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return l; K{)YnY_E;
} 4l~0LdYXKm
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} zkt+"P{az[
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改进后的快速排序: faVR %
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package org.rut.util.algorithm.support; A%G
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import org.rut.util.algorithm.SortUtil; 1JU1XQi
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/** /{~cUB,Um
* @author treeroot S}rW=hO
* @since 2006-2-2 ?kvkdHEO_
* @version 1.0 ?OU+)kgzh
*/ u$Za hN!
public class ImprovedQuickSort implements SortUtil.Sort { D*oJz3[
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private static int MAX_STACK_SIZE=4096; /_rg*y*
private static int THRESHOLD=10; jR^>xp;
/* (non-Javadoc) AF
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >qSaF
*/ /!*gH1s
public void sort(int[] data) { p?X`f#
int[] stack=new int[MAX_STACK_SIZE]; I+Q`i:\,q
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int top=-1; IJ%S[>
int pivot;
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int pivotIndex,l,r; *Iu
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stack[++top]=0; # Z*nc0C
stack[++top]=data.length-1; a?IL6$z
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while(top>0){ Xj\SJ*
int j=stack[top--]; o'3t(dyyH
int i=stack[top--]; Xja l6e)[
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pivotIndex=(i+j)/2; >o\[?QvP
pivot=data[pivotIndex]; |xTf:@hgHf
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SortUtil.swap(data,pivotIndex,j); \@kY2,I V
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file://partition p1=sDsLL
l=i-1; Ah2%LXdHA
r=j; 1f 0"z1
do{ T#1>pED
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ] Qp0|45=
SortUtil.swap(data,l,r); G;+hc%3y
} -L/5Nbup
while(l SortUtil.swap(data,l,r); MK]S205{
SortUtil.swap(data,l,j); }{^i*T5rl
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if((l-i)>THRESHOLD){ 1R/=as,R
stack[++top]=i; 4ifWNL^)
stack[++top]=l-1; t-\S/N
} K/ q:aMq
if((j-l)>THRESHOLD){ /hue]ZaQq
stack[++top]=l+1; *R*Tmo"
stack[++top]=j; t/,k{5lX
} Cm;WQuv@
#;
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} rs@,<DV)u
file://new InsertSort().sort(data); =;{vfjj
insertSort(data); .Lrdw3(
} V*U7-{ *a
/** $cev,OW6]
* @param data @|&P#wd.u
*/ ku*|?uF
private void insertSort(int[] data) { C!SB5G>OH
int temp; bID 'r}55
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 47"ERfP
} vm+EzmO,!
} BCya5!uy
} ?K7m:Dx
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} %D z|p]49!
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归并排序: XcA4EBRj
E'LkoyI
package org.rut.util.algorithm.support; AA}M"8~2
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import org.rut.util.algorithm.SortUtil; \Z^K=K(|
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/** {M]m cRB(
* @author treeroot l\5}\9yS
* @since 2006-2-2 8zz-jkR
* @version 1.0 0Bn$C,-
*/ EkV v
public class MergeSort implements SortUtil.Sort{ nX>k}&^L
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/* (non-Javadoc) LiJ;A*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) io:?JnQSA
*/ Gq;0j:?CC
public void sort(int[] data) { T7n;Bf
int[] temp=new int[data.length]; K/Axojo
mergeSort(data,temp,0,data.length-1); G7C9FV bR
} +v&+8S`+
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private void mergeSort(int[] data,int[] temp,int l,int r){ SZc6=^$
int mid=(l+r)/2; n$}c+1
if(l==r) return ; A]BD2
mergeSort(data,temp,l,mid); NF0} eom
mergeSort(data,temp,mid+1,r); 2P9h x5PiV
for(int i=l;i<=r;i++){ <