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。 nE?:nJ|%E
插入排序: f,|;eF-Z
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package org.rut.util.algorithm.support; ,1cpV|mAr
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import org.rut.util.algorithm.SortUtil; _00}O+GLM4
/** [mNu m3e
* @author treeroot !vVW8hbp
* @since 2006-2-2 IWm@pfC+g
* @version 1.0 h~qv_)F_
*/ [ w-Tf&
public class InsertSort implements SortUtil.Sort{ k<Xb<U
0M)\([W9&
/* (non-Javadoc) dcTZL$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Yakrsi/jV}
*/ G$)tp^%]
public void sort(int[] data) { f="Zpl W
int temp; 65VTKlDD
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ueg%D+u
} Fe+(+ S
} W#kyD)(F
}
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} c6=XJvz
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冒泡排序: mey -Bn
f}KV4'n
package org.rut.util.algorithm.support; #;lEx'lKN
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import org.rut.util.algorithm.SortUtil; MtgY `p
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/** lp5'-Jo
* @author treeroot PR AP~P&^
* @since 2006-2-2 Os].
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* @version 1.0 44w
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*/ ;%i-:<ac
public class BubbleSort implements SortUtil.Sort{ 0LP0q9S:9
EP<{3fy
/* (non-Javadoc) ?B)e8i<[f
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )7-mALyW
*/ WP Gp(Xw
public void sort(int[] data) { E7.{SGH}
int temp; \d:Uq5d)0
for(int i=0;i for(int j=data.length-1;j>i;j--){ x_/l,4_
if(data[j] SortUtil.swap(data,j,j-1); BeD>y@ it
} L_+Fin
} R<hsG%BS(D
} X+ybgB4(
} cG 3tn&AXi
09 f;z
} MSp)Jc
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选择排序: %s5(''a.
blP8"(U
package org.rut.util.algorithm.support; NXz/1ut%
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import org.rut.util.algorithm.SortUtil; >{A)d<
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/** iCGHcN^3
* @author treeroot !Htl e %
* @since 2006-2-2 @Jlsx0i}}
* @version 1.0 _5b~3K/V
*/ n:?a=xY
public class SelectionSort implements SortUtil.Sort { E0aFHC[
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/* X4Uy3 TV>
* (non-Javadoc) _{}^]ZB
* ae2I,Qt%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e5lJ)_o
*/ Jvj* z6/a
public void sort(int[] data) { Cv&>:k0V
int temp; 9KT85t1#
for (int i = 0; i < data.length; i++) { :RYYjmG5;
int lowIndex = i; n$>_2v
for (int j = data.length - 1; j > i; j--) { vS:=%@c>ta
if (data[j] < data[lowIndex]) { R!\._m?\h
lowIndex = j; kFT*So`'
} zxd<Cq>d
} unnuSW#v=
SortUtil.swap(data,i,lowIndex); vDR>
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} p]toDy-}
} V1,~GpNx
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} nDLiER;U
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Shell排序: jH;L7
8u"C7} N_
package org.rut.util.algorithm.support; x
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import org.rut.util.algorithm.SortUtil; An,TunX
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/** bHTTxZ-%
* @author treeroot goD#2lg
* @since 2006-2-2 o?3C -A|
* @version 1.0 cA]PZ*]{BN
*/ 5twG2p8
public class ShellSort implements SortUtil.Sort{ dWo$5Bls<A
f,3K;S-he:
/* (non-Javadoc) 83'rQDo)G
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a",
8N"'
*/ | OZ>5
public void sort(int[] data) { k>E/)9%ep2
for(int i=data.length/2;i>2;i/=2){ P8ns @VV
for(int j=0;j insertSort(data,j,i); `V*$pHo
} JiXN"s^mcb
} =~dXP
insertSort(data,0,1); K8QEHc:
} g`"_+x'
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/** i^4i]+
* @param data wqX!7rD/g)
* @param j -.Z;n1'^
* @param i Oe k$f,J-
*/ `YBHBTG'o!
private void insertSort(int[] data, int start, int inc) { `#j;\
int temp; PBwKR D[I
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); xP'"!d4^i
} G?:5L0g
} >k~3W> D
} )S@TYzdAN
SK,UW6h
} ,twm)%caU
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快速排序: K#yCZ2
zWF[cf>'
package org.rut.util.algorithm.support; d#I; e
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import org.rut.util.algorithm.SortUtil; S;nlC
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/** C33RXt$X
* @author treeroot ZM57(D
* @since 2006-2-2 0!1cHB/c
* @version 1.0 ;PMy9H
*/ N_VWA.JHt
public class QuickSort implements SortUtil.Sort{ @4]dv> Z
#/hXcF
/* (non-Javadoc) IBh?vh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )hfI,9I~
*/ B+ZhQW
public void sort(int[] data) { 0qN+W&H
quickSort(data,0,data.length-1); rp!{QG
} |W|RX3D
private void quickSort(int[] data,int i,int j){ D}nRH@<`
int pivotIndex=(i+j)/2; 9t&m\J
>8;
file://swap Z.U8d(
SortUtil.swap(data,pivotIndex,j); ;W@
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int k=partition(data,i-1,j,data[j]); A$::|2~
SortUtil.swap(data,k,j); h$ $i@IO0
if((k-i)>1) quickSort(data,i,k-1); >WY\P4)k
if((j-k)>1) quickSort(data,k+1,j); z3yAb"1Hg
,T+.xB;Q@
} Q\2~^w1V
/** (:7Z-V2(
* @param data 3lefB
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* @param i vUJQ<D
* @param j [-3x *?Ju
* @return }#` -mRaU
*/ g+KuK`\N%
private int partition(int[] data, int l, int r,int pivot) { WiF6*]oI
do{ |'Ksy{lA
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); nh/%0=S
SortUtil.swap(data,l,r); _%PEv{H0.
} 7qhX`$
while(l SortUtil.swap(data,l,r); l3YS_WBSn
return l; -JXCO<~k
} 9Pdol!
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} Q::_i"?c
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改进后的快速排序: h09fU5l
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package org.rut.util.algorithm.support; CVGQ<,KVW
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import org.rut.util.algorithm.SortUtil; aq.Lnbi/X
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/** 2U'Vq
* @author treeroot E~c>LF_]Q
* @since 2006-2-2
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* @version 1.0 DG
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*/ *|3G"B{w6
public class ImprovedQuickSort implements SortUtil.Sort { Q;2n
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private static int MAX_STACK_SIZE=4096; G@1T!`
private static int THRESHOLD=10; |SwW*C
/* (non-Javadoc) %xP'*EaM?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H>|*D~RdT
*/ R9^RG-x
public void sort(int[] data) { `:fh$V5J>
int[] stack=new int[MAX_STACK_SIZE]; N=TDywRI
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int top=-1; (L!#2Jy
int pivot; *#sY-G d
int pivotIndex,l,r; )'axJ
7\EY&KI"0
stack[++top]=0; ifcC
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stack[++top]=data.length-1; m4'x>Z
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while(top>0){ >~rytg] f
int j=stack[top--]; YiTVy/
int i=stack[top--]; 5>S)+p
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pivotIndex=(i+j)/2; ECLQqjB
pivot=data[pivotIndex]; JnXVI!+JDL
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SortUtil.swap(data,pivotIndex,j); 'EkuCL
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file://partition 1p
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l=i-1; "uG@gV
r=j; qnTW?c9Z5
do{ lVo}DFZ
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); {4HcecT
SortUtil.swap(data,l,r); DkeFDzQ5
} :o}LJc)|
while(l SortUtil.swap(data,l,r); I+']av8e
SortUtil.swap(data,l,j); tZ_D.syBAc
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if((l-i)>THRESHOLD){ 7uxUqM
stack[++top]=i; @wx
stack[++top]=l-1; Q<fDtf}
} 05Y4=7,!
if((j-l)>THRESHOLD){ &4jc3_UKV
stack[++top]=l+1; !ZzDSQ;
stack[++top]=j; K7}]pk,AG
} ) 0|X];sD
.dTXC'
} H{VJS Jc{
file://new InsertSort().sort(data); )]3_o!o
insertSort(data); ,p9>/)l
} R}HNi(%"
/** dNT<![X\
* @param data G"nGaFT~
*/ 9?4:},FRmE
private void insertSort(int[] data) { ,w$:=;i
int temp; 2rG$.cGN"
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); X.J$
5b
} I|vfxf
} N7mYE
} hmr 2(f%U
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} NRDXWscb
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归并排序: o ^Ro 54i
,HtXD~N
package org.rut.util.algorithm.support; 3D2i32Y@!
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import org.rut.util.algorithm.SortUtil; YzeNr*
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/** U\x$@J
* @author treeroot 6QG"~>v7'(
* @since 2006-2-2 WADAp\&
* @version 1.0 ){$*<#&H
*/ !]t5(g_
public class MergeSort implements SortUtil.Sort{ `xF^9;5mi
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/* (non-Javadoc) X}_Gk5q*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y [%<s/
*/
} @4by<
public void sort(int[] data) { TWSx9ii!M:
int[] temp=new int[data.length]; JbLHW26pl
mergeSort(data,temp,0,data.length-1); i.0.oy>
} ['Y"6[1
}5]7lGR
private void mergeSort(int[] data,int[] temp,int l,int r){ 9oTtH7%
int mid=(l+r)/2; 7)dCdO
if(l==r) return ; b;IzK'
mergeSort(data,temp,l,mid); J)._&O$
mergeSort(data,temp,mid+1,r); 0Q!/A5z
for(int i=l;i<=r;i++){ uXo?
temp=data; x<\5Jrqt
} Df.eb|[{
int i1=l; OZ6:u^OS]
int i2=mid+1; xt1Ug~5
for(int cur=l;cur<=r;cur++){ .njk^,N
if(i1==mid+1) FG)(,?q
data[cur]=temp[i2++]; |}isSCt
else if(i2>r) 0N`N
data[cur]=temp[i1++]; }}u16x}*n
else if(temp[i1] data[cur]=temp[i1++]; k\KI#.>
else T$*#q('1"}
data[cur]=temp[i2++]; A&D<}y/%
} Czb:nyRj
} ^"] ]rZ)
#&K? N
} Ox9M![fC
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改进后的归并排序: e3,@prr
n<e1=L
package org.rut.util.algorithm.support; mKuY=#R P
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import org.rut.util.algorithm.SortUtil; dheobD
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/** *>E_lWW.
* @author treeroot aW_Pv~
* @since 2006-2-2 z>z9xG'
* @version 1.0 xq&r|el
*/ [,sm]/Xlc
public class ImprovedMergeSort implements SortUtil.Sort { jr/IU=u*v
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private static final int THRESHOLD = 10; wWQt
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/*
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* (non-Javadoc) zx7A}rs3oX
* PwU<RKAE
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X8y :=k,E
*/ m2[]`Ir^@
public void sort(int[] data) { qyzH*#d=Cf
int[] temp=new int[data.length]; PFjh]/=
mergeSort(data,temp,0,data.length-1); sq{=TB{
} WOi+y
lP*p7Y '
private void mergeSort(int[] data, int[] temp, int l, int r) { &Gs/#2XQ
int i, j, k; ~rlPS#]o
int mid = (l + r) / 2; wizLA0W
if (l == r) S/dj])g
return; yM('!iG*/
if ((mid - l) >= THRESHOLD) lJdrrR)wg
mergeSort(data, temp, l, mid); ai"N;1/1O|
else 8Y [4JXUK
insertSort(data, l, mid - l + 1); v^aI+p6
if ((r - mid) > THRESHOLD) 9XmbHS[0V
mergeSort(data, temp, mid + 1, r); '&/~Sh$%
else |_ OoD9,M
insertSort(data, mid + 1, r - mid); %LBf'iA
}kSP p
for (i = l; i <= mid; i++) { UJ><B"
temp = data; o:`^1
} `=%G&_3_<
for (j = 1; j <= r - mid; j++) { PLq]\y
temp[r - j + 1] = data[j + mid]; {01^xn.
} M[P1hFuna
int a = temp[l]; .rQcg.8/B
int b = temp[r]; N?IdaVLj
for (i = l, j = r, k = l; k <= r; k++) { }Z)YK}_1
if (a < b) { Q w)U
data[k] = temp[i++]; w5=<}1`St
a = temp; 1d OB|
} else { !X`cNd)0Xo
data[k] = temp[j--]; mc4|@p*
b = temp[j]; 39A|6>-?
} lib}dk
} ET(/h/r
} cZ3A~dTOR
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/** ;
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* @param data .E;}.X
* @param l Ld
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* @param i `4wy
*!]
*/ 0-p
%.}GE
private void insertSort(int[] data, int start, int len) { 5t|$Yt[
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); LI>Bl
} <?%49
} 5b->pc
} -@Z9h)G|
} {4*5Z[
udPLWrPF\
堆排序: {LT2^gy=
f# -\*
package org.rut.util.algorithm.support; B<ZCuVWH:
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import org.rut.util.algorithm.SortUtil; %~P3t=r
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/** pZ]&M@Ijp
* @author treeroot <)
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* @since 2006-2-2 5=V 29
* @version 1.0 SNf~%B?`L
*/ &yI>A1
public class HeapSort implements SortUtil.Sort{ Oj8D+sC{
+_jM$?:F}
/* (non-Javadoc) 3Xy~ap>Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5sSAH
*/ O&sU Pv
public void sort(int[] data) { ^!$=(jh.
MaxHeap h=new MaxHeap(); n`!6EaD
h.init(data); 8mt#S
for(int i=0;i h.remove(); %S^:5#9
System.arraycopy(h.queue,1,data,0,data.length); AC!yc(^<
} _#we1m
-s\R2_(
private static class MaxHeap{ uQKo2B0
QcX&q%*0
void init(int[] data){ wbI1~/
this.queue=new int[data.length+1]; AmJdZs|/
for(int i=0;i queue[++size]=data; J+wnrGoK
fixUp(size); `l %,4qR
} {REGoe=W%
} >h.HW
rr>6;
private int size=0; K5z<n0X ~
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private int[] queue; @'y8* _
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public int get() { j%}9tM6[
return queue[1]; M"-.D;sa1
} f1XM_
OGO\u#
public void remove() { 3QF[@8EH{
SortUtil.swap(queue,1,size--); +G+1B6S
fixDown(1); 2*]
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} m -0EcA/
file://fixdown G-,0mo
private void fixDown(int k) { wk'&n^_br
int j; d.
ZfK
while ((j = k << 1) <= size) { L-zU%`1{M
if (j < size %26amp;%26amp; queue[j] j++; 7Sh1QDYZ
if (queue[k]>queue[j]) file://不用交换 tKds|0,j|
break; CWJN{
SortUtil.swap(queue,j,k); dp4vybJ
k = j; ~_IQ:]k
} '8FHn~F
} .v-2A);I
private void fixUp(int k) { ?y__ Vrw
while (k > 1) { tI5*0
int j = k >> 1; Mb45UG#2
if (queue[j]>queue[k]) LBmXy8'T`
break; {s8g;yU5
SortUtil.swap(queue,j,k); SLp nVD:'1
k = j; D(WV
k
} 3{$ >-d
} NiQ Y3Nj
[
$"
} #K iqV6E
L+eK)Q
} @ZrNV*&<
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SortUtil: tu/4
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package org.rut.util.algorithm; +}Mm5^6*
*SpE
XO
import org.rut.util.algorithm.support.BubbleSort; B\qy:nr j
import org.rut.util.algorithm.support.HeapSort; >/NegJh'F}
import org.rut.util.algorithm.support.ImprovedMergeSort; .~TI%
import org.rut.util.algorithm.support.ImprovedQuickSort; KC%&or
import org.rut.util.algorithm.support.InsertSort; CrG!8}
import org.rut.util.algorithm.support.MergeSort; J25/Iy*byG
import org.rut.util.algorithm.support.QuickSort; *pAB dP+
import org.rut.util.algorithm.support.SelectionSort; Z`|\%D%
import org.rut.util.algorithm.support.ShellSort; InRcIQT
^(@]5$^Z
/** s6#e?5J
* @author treeroot px(~ZZB"
* @since 2006-2-2 Lr(JnS
* @version 1.0 ="PFCxi
*/ XqwP<5Z
public class SortUtil { .F[5{XV
public final static int INSERT = 1; t:v>W8N53
public final static int BUBBLE = 2; 2izBB,# "
public final static int SELECTION = 3; M@p<L
VP
public final static int SHELL = 4; ?6L8#"=
public final static int QUICK = 5; 9e}%2,
public final static int IMPROVED_QUICK = 6; 7|"$YV'DM
public final static int MERGE = 7; JbMp /
public final static int IMPROVED_MERGE = 8; 8Qj1%Ri:U
public final static int HEAP = 9; 9[DlJ@T}
Dtyw]|L\H
public static void sort(int[] data) { 8i<]$
sort(data, IMPROVED_QUICK); c?aOX/C'
} 3JqGLR`z3
private static String[] name={ &