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。 ndY1j5
插入排序: 5V($|3PI
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package org.rut.util.algorithm.support; 9W~3E^x
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import org.rut.util.algorithm.SortUtil; R\+O.vX
/** qU/,&C
* @author treeroot x9Qa.Jmj
* @since 2006-2-2 c/g"/ICs
* @version 1.0 UhX`BGpM{
*/ ` s}v6
public class InsertSort implements SortUtil.Sort{ R8uiLZd
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/* (non-Javadoc) /JOEnQ5X\!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u{@b_75Y
*/ -54
public void sort(int[] data) { fV`R7m.
int temp; S&rfMRP
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0aF&5Lk`y
} BWz7m9T
} IIW6;jS
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冒泡排序: X[XSf=
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package org.rut.util.algorithm.support; vT7ei"~&u
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import org.rut.util.algorithm.SortUtil; e?&4;
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/** [P*w$Hn
* @author treeroot h2Pvj37
* @since 2006-2-2 bN#)F
* @version 1.0 I'_.U]An
*/ cX64 X
public class BubbleSort implements SortUtil.Sort{ Ux2pqPb
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/* (non-Javadoc) d9hJEu!Lu
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F:.rb
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*/ DFKU?#R
public void sort(int[] data) { 0/d+26lR
int temp; 8[SiIuIV
for(int i=0;i for(int j=data.length-1;j>i;j--){ sO~:e?F
if(data[j] SortUtil.swap(data,j,j-1); oagxTFh8~
} K.?~@5%
} >|L,9lR_b
} i DV.L
} d/G`w{H}y
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} D!kv+<+
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选择排序: u+eA>{
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package org.rut.util.algorithm.support; wt4uzg8
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import org.rut.util.algorithm.SortUtil; ~d :Z|8
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/** N.OC _H&
* @author treeroot {dV#"+
* @since 2006-2-2 sw{,l"]<
* @version 1.0 8;YeEW5
*/ )&}\2NK6L
public class SelectionSort implements SortUtil.Sort { {yQeLION
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/* N!>Gg|@~
* (non-Javadoc) F23/|q{{
* ooY2"\o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Tx%6whd/'
*/ &K5wCNX1
public void sort(int[] data) { i.Iiwe0G
int temp; >;}np
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for (int i = 0; i < data.length; i++) { jA R@?X
int lowIndex = i; i|PQNhUe
for (int j = data.length - 1; j > i; j--) { AK\X{>$a!
if (data[j] < data[lowIndex]) { Hzs]\%"
lowIndex = j; |><hdBQXX<
} a<l(zJptG
} qt5CoxeJ
SortUtil.swap(data,i,lowIndex); /NCEZ@2BN,
} j?D=Ij"o
} [$)C(1zY
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} deSrs:.
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Shell排序: _sIhQ8$:
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; BX&bhWYGFX
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/** yC ZV:R;
* @author treeroot *(@(9]B~
* @since 2006-2-2 )Q\nR`k
* @version 1.0 kxt@t#
*/ zRPXmu{t
public class ShellSort implements SortUtil.Sort{ hW[/{2<@
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/* (non-Javadoc) ~Emeo&X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pASNiH698
*/ `#B|l+baq
public void sort(int[] data) { S(Md
for(int i=data.length/2;i>2;i/=2){ mh;<lW\K/Z
for(int j=0;j insertSort(data,j,i); %7 h_D
} (y%}].[bB
} b=v
insertSort(data,0,1); T{v(B["!$
} "1>I/CM
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/** ^l|{*oj2
* @param data |SC^H56+
* @param j VE5w!of
* @param i KCd}N
*/ 3a #2 }
private void insertSort(int[] data, int start, int inc) { rlr)n\R#
int temp; :&ir5xHS
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); =4cK9ac
} 4hdxqI!y2
} T!e]=
} )$K )`uqb
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} LcS\#p#s]
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快速排序: i:W.,w%8
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package org.rut.util.algorithm.support; c'n EbelE
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import org.rut.util.algorithm.SortUtil; n{JBC%^g
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/** asqbLtQ
* @author treeroot _4F(WC co
* @since 2006-2-2 wYy=Tl-N
* @version 1.0 *4#)or
*/ ,.[T]37
public class QuickSort implements SortUtil.Sort{ 8o43J;mA
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/* (non-Javadoc) s<VNW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -
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*/ ek!x:G$'
public void sort(int[] data) { 3Ob"R%Yo
quickSort(data,0,data.length-1); *YmR7g |k
} sFv68Ag+
private void quickSort(int[] data,int i,int j){ 9/3gF)I}
int pivotIndex=(i+j)/2; xtWQ.
file://swap &}:'YK*X
SortUtil.swap(data,pivotIndex,j); SV#$Cf g
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int k=partition(data,i-1,j,data[j]); d_s=5+Yj
SortUtil.swap(data,k,j); X!Ag7^E
if((k-i)>1) quickSort(data,i,k-1); P{j2'gg3
if((j-k)>1) quickSort(data,k+1,j); #DK@&Gv
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} R:c$f(aKv%
/** G"P@AOw
* @param data ssaEAm:
* @param i AjBwj5K
* @param j |#9Nu9ak
* @return -xs@rV`
*/ <QbD ; (%
private int partition(int[] data, int l, int r,int pivot) { Kn-cwz5
do{ "ee:Z_Sz
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ybLl[K(D=
SortUtil.swap(data,l,r); 2F*spu
} 278:5yC
while(l SortUtil.swap(data,l,r); kN (*.Q|VZ
return l; o2M+=O@
} Wno{&I63
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} 'J\nvNm
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改进后的快速排序: j}9][Fm1*
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package org.rut.util.algorithm.support; ]}7FTMGbY
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import org.rut.util.algorithm.SortUtil; JSz;>
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/** B(tLV9B3Q
* @author treeroot 2ZTz{|y
* @since 2006-2-2 ;75m 9yGo
* @version 1.0 MLD1%* &0
*/ JX4uH>6
public class ImprovedQuickSort implements SortUtil.Sort { +/xmxh$ $
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private static int MAX_STACK_SIZE=4096; "^M/iv(
private static int THRESHOLD=10; :
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/* (non-Javadoc) aumWU{j=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }%e"A4v
*/ \S#Mc
public void sort(int[] data) { &1nZ%J9
int[] stack=new int[MAX_STACK_SIZE]; D{'>G@nLQ
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int top=-1; akR+QZ,)
int pivot; ,Dh+-}
int pivotIndex,l,r; C8ss6+k&
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stack[++top]=0; $D;/b+a
stack[++top]=data.length-1; n^}M*#
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while(top>0){ 2rxZN\gyL
int j=stack[top--]; T''PzY!Qf
int i=stack[top--]; 4pU|BL\j
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pivotIndex=(i+j)/2; m@(8-_
pivot=data[pivotIndex]; .`w[A
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SortUtil.swap(data,pivotIndex,j); &Bn>
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file://partition =;tDYuFc!
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r=j; qH1k
do{ R1,.H92
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); cXcrb4IKD
SortUtil.swap(data,l,r); Cd Bsd
} p~v
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while(l SortUtil.swap(data,l,r); o<1a]M|
SortUtil.swap(data,l,j); 7E0L-E=.
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if((l-i)>THRESHOLD){ i^<P@ |q
stack[++top]=i; *:r6E
stack[++top]=l-1; ?WVp,vP
} YJ6y]r
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if((j-l)>THRESHOLD){ v3zd>fDnRp
stack[++top]=l+1; i sK_t*
stack[++top]=j; $!?tJ@{
} F+!w[}0
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} F,hiKq*
file://new InsertSort().sort(data); Pn?,56SD=
insertSort(data); #\P\(+0K
} ]TE(:]o7V
/** DJWm7 t
* @param data [quT&E
*/ w(,K
private void insertSort(int[] data) { 9`a1xnL
int temp; Q4H(JD1f)
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); h4iz(*
} Y5dt/8Jo
} \`kH2`
} y3Z\ Y[
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} H\>0jr`
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归并排序: f\vy5''
N?3BzI%?
package org.rut.util.algorithm.support; {/2
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import org.rut.util.algorithm.SortUtil; 3;'RF#VL
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/** |Bhj L,
* @author treeroot <tn6=IV
* @since 2006-2-2 n7p,{KSQ
* @version 1.0 xgQ&'&7l
*/ "q]r{0
public class MergeSort implements SortUtil.Sort{ g;eoH
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/* (non-Javadoc) T!YfCw.HZ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ls ,;ozU
*/ V"u .u
public void sort(int[] data) { q(s&2|
int[] temp=new int[data.length]; W }
mergeSort(data,temp,0,data.length-1); -L6V)aK&
} Q13>z%Rge
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private void mergeSort(int[] data,int[] temp,int l,int r){ 0K:3?Ik
int mid=(l+r)/2; JU`5K}H<
if(l==r) return ; zqlgJn
mergeSort(data,temp,l,mid); zf.&E3Sn
mergeSort(data,temp,mid+1,r); +d289"
for(int i=l;i<=r;i++){ ,&ld:v?~
temp=data; rk)h_zN
} -VafN
int i1=l; y3Q2d7G
int i2=mid+1; n1Fp$9%
for(int cur=l;cur<=r;cur++){ mhi^zHpa
if(i1==mid+1) 6!A+$"
data[cur]=temp[i2++]; -oMp@2\e
else if(i2>r) *t_JR
data[cur]=temp[i1++]; gCP f1z
else if(temp[i1] data[cur]=temp[i1++]; ZQN%!2
else N#&/d nV
data[cur]=temp[i2++]; zy\R>4i'#Q
} "eH.<&
} P>wTp)
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} LEJn
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改进后的归并排序: 8h$f6 JE
j1i<.,0g
package org.rut.util.algorithm.support; &Ndq^!e
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import org.rut.util.algorithm.SortUtil; kNC]q,ljt5
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/** {Q/_I@m].
* @author treeroot ( SiwO.TZ
* @since 2006-2-2 4<<T#oW.:G
* @version 1.0 ;vp[J&=
*/ q'CtfmI`r=
public class ImprovedMergeSort implements SortUtil.Sort { yr[HuwU
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private static final int THRESHOLD = 10; %Q. |qyq
) mh,F#"L
/* Nu4PY@m]C
* (non-Javadoc) Kq&JvY^
* t_NnQ4)=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?>T (
*/ 17) `CM$<[
public void sort(int[] data) { P0O=veCf
int[] temp=new int[data.length]; 9^2l<4^Z
mergeSort(data,temp,0,data.length-1); ]MaD7q>+R
} .3:s4=(f
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private void mergeSort(int[] data, int[] temp, int l, int r) { ~`!{5:v
int i, j, k; }:xj%?ki
int mid = (l + r) / 2; 8i Xt8XY3
if (l == r) $e/[!3CASP
return; kx6-8j3gD7
if ((mid - l) >= THRESHOLD) `\M}~
mergeSort(data, temp, l, mid); aC,?FWm
else cM;,n X %/
insertSort(data, l, mid - l + 1); CMviR<.
if ((r - mid) > THRESHOLD)
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mergeSort(data, temp, mid + 1, r); bc%N !d
else 353*D%8
insertSort(data, mid + 1, r - mid); WX}pBmU
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for (i = l; i <= mid; i++) { Ek,$XH
temp = data; nv}z%.rRUj
} +H6cZ,
for (j = 1; j <= r - mid; j++) { $I4:g.gKpG
temp[r - j + 1] = data[j + mid]; Og/@w&