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。 E@
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插入排序: g?qKNY
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package org.rut.util.algorithm.support; KO]N%]:&~
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import org.rut.util.algorithm.SortUtil; i+M*J#'
/** s ?l%L!
* @author treeroot `hB1b["(
* @since 2006-2-2 |k-XBp
* @version 1.0 DpL8'Dib
*/ S-E++f9D~
public class InsertSort implements SortUtil.Sort{ \k&1*b?h
@Hr+/52B
/* (non-Javadoc) p4/$EPt)lY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &+nRIv S_`
*/ -4L!k'uR
public void sort(int[] data) { E;-qP)yU
int temp; T'rjh"C&|
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); lQt% Qx
} &y:CW>T$/X
} fCEz-TMW
} Z}cIA87U
c>Z*/>~
} C*wdtEGq
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冒泡排序: <]#o*_aFP
B/YcSEY;
package org.rut.util.algorithm.support; kG3!(?:
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import org.rut.util.algorithm.SortUtil; P%GkcV
*)PG-$6X&
/** ~'BUrX\
* @author treeroot lIDl1Z@Z
* @since 2006-2-2 lYQtv=q
* @version 1.0 /e 5\ 9
*/ Hcl"T1N*
public class BubbleSort implements SortUtil.Sort{ nu 7lh6o=
q,,j',8kq/
/* (non-Javadoc) c/$*%J<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _bQL[eXd
*/ utd:&q|}
public void sort(int[] data) { ^('cbl
int temp; 5^|"_Q#:
for(int i=0;i for(int j=data.length-1;j>i;j--){ p+D=}O
if(data[j] SortUtil.swap(data,j,j-1); i/:5jI|
} ?cBO6^
} "8t\MKt(
} ;tN4HiN
} oWrE2U;
Y2vj}9jK
} ("F)
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选择排序: 4Bo<4 4-,
A5+5J_)*
package org.rut.util.algorithm.support; ZV#$Z
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import org.rut.util.algorithm.SortUtil; KZ4zF
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/** ;r@!a!NLB
* @author treeroot
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* @since 2006-2-2 ioWJj.%
* @version 1.0 THr8o V5
*/ _y-B";Vmm
public class SelectionSort implements SortUtil.Sort { y;,y"W
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/* w#<^RKk
* (non-Javadoc) /THNP 8.
* Za9$Hh/X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'oCm.~;_
*/ yYB NH1
public void sort(int[] data) { )8bFGX7|
int temp; =1Ri]b
for (int i = 0; i < data.length; i++) { 7
{nl..`
int lowIndex = i; qdO[d|d
for (int j = data.length - 1; j > i; j--) { "kU>~~y,
if (data[j] < data[lowIndex]) { /bi6>GaC:E
lowIndex = j; \{:%v#ZZ
} ?'Oj=k"c7
} j;G[%gi6{
SortUtil.swap(data,i,lowIndex); iT[oKD0)
} yT&x`3f"i
} ^pN 5NwC5
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} ">4PePt.n
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Shell排序: PqVW'FYe
z'T=]-
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package org.rut.util.algorithm.support; wLpkUa
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import org.rut.util.algorithm.SortUtil; Rnzqw,q
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/** K]ca4Z
* @author treeroot .#sz|0
* @since 2006-2-2 ka!Bmv)
* @version 1.0 fEB195#@9
*/ zuk"
public class ShellSort implements SortUtil.Sort{ G5Je{N8W
amMjuyW
/* (non-Javadoc) (=`Z0)=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ix^gAot
*/ D DQs42[
public void sort(int[] data) { 0r0c|*[+4z
for(int i=data.length/2;i>2;i/=2){ |xp$OL"a
for(int j=0;j insertSort(data,j,i); qw|JJ
} .N/GfR`0/<
} F%9cS
:
insertSort(data,0,1); UOw~rK
} IhUW=1&J
"\4]X"3<+
/** C%0<1mp
* @param data XO 0>t{G
* @param j +mivqR~{{
* @param i $4DFgvy$
*/ "!xvpsy
private void insertSort(int[] data, int start, int inc) { r|l53I5
int temp; mPckf
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ZyHIMo|
} -T 2~W!
} _t$lcOT
} Hr
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?hxK/%)
} F='Xj@&O
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快速排序: hK:#+hg,
ooomi"u
package org.rut.util.algorithm.support; [&1iF1)4
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import org.rut.util.algorithm.SortUtil; \H,V 9!B
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/** Bh\
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* @author treeroot Z"l`e0{
* @since 2006-2-2 I h5/=_n
* @version 1.0 P=f<#l"v
*/ |}M~kJ)
public class QuickSort implements SortUtil.Sort{ 7J0 ^N7"o
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/* (non-Javadoc) 0\V\qAk
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g@$0FY{Q
*/ ^fA3<|
public void sort(int[] data) { }W - K
quickSort(data,0,data.length-1); {[l'S
} $.ymby
private void quickSort(int[] data,int i,int j){ +i: E
int pivotIndex=(i+j)/2; ;6DR.2}?>
file://swap D
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SortUtil.swap(data,pivotIndex,j); B$K7L'e+-
WpZy](,
int k=partition(data,i-1,j,data[j]); RA*_&Ll&!C
SortUtil.swap(data,k,j); 1h#w"4
if((k-i)>1) quickSort(data,i,k-1); N2[, aU
if((j-k)>1) quickSort(data,k+1,j); 0|],d?-h
Wwn5LlJ^
} u+%)JhIp
/** ;s}-X_O<
* @param data /V#MLPA
* @param i ~@b9
* @param j FiV^n6-F`
* @return B|$\/xO
*/ ,
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private int partition(int[] data, int l, int r,int pivot) { rC=p;BC@dD
do{ +~R.7NE%
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); "cnG/{($*
SortUtil.swap(data,l,r); ')5jllxv
} "wc`fg"3
while(l SortUtil.swap(data,l,r); J
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return l; &%_y6}xIw
} `^s]?
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} M]8eW
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改进后的快速排序: pAPQi|CN
0C9QAJa
package org.rut.util.algorithm.support; ^)eessZ
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import org.rut.util.algorithm.SortUtil; ;X9MA=b
p ] $
/** erAZG)
* @author treeroot EmBfiuX
* @since 2006-2-2 e>)}_b
* @version 1.0 ~'PS|
*/ 2Wc;hJ.1
public class ImprovedQuickSort implements SortUtil.Sort { Bv
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private static int MAX_STACK_SIZE=4096; D@YM}HXuj
private static int THRESHOLD=10; ];wohW%
/* (non-Javadoc) %n V@'3EI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U4mh!
*/ ' /@!"IXz
public void sort(int[] data) { b`;b}ug
int[] stack=new int[MAX_STACK_SIZE]; .DV#-tUh
{?h6*>-^Z
int top=-1; o^.s!C%j
int pivot; *{4{<O<4
int pivotIndex,l,r; wTJMq`sY_
\:f}X?:
stack[++top]=0; `[W)6OUCx}
stack[++top]=data.length-1; 8xGkh?%
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while(top>0){ 0,i+
int j=stack[top--]; ,R9f;BR
int i=stack[top--]; >f9]Nj
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pivotIndex=(i+j)/2; ^Qb!k/$3y
pivot=data[pivotIndex]; (x*2BEn|
#ui%=ja[:~
SortUtil.swap(data,pivotIndex,j); 4j=@}!TBt
daokiU+l2
file://partition a1Y _0
l=i-1; J~ gkGso
r=j; -<VF6k<
do{ V1+o3g{}
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); !nD[hI8P
SortUtil.swap(data,l,r); E(K$|k_>
} 3By>t!~Q
while(l SortUtil.swap(data,l,r); uS+b* :
SortUtil.swap(data,l,j); I7-PF?
K|' ]Hje\
if((l-i)>THRESHOLD){ g_U*_5doA
stack[++top]=i; qcoZ2VJ hh
stack[++top]=l-1; ki/Lf4
} b*%WAVt2T
if((j-l)>THRESHOLD){ ?9.? w-Q'
stack[++top]=l+1; V:$1o
stack[++top]=j; 7Bb@9M?i
} %L,,
3 mMdq*X5
} KHC(MdZ
file://new InsertSort().sort(data); !"qEB2r
insertSort(data); q\b9e&2Y
} G}OrpPP
/** !i lDR<
* @param data \VzQ1B>k
*/ X=7vUb,\gB
private void insertSort(int[] data) { ="*C&wB^
int temp;
TOP'Bmb
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @!tmUme1c
} $TUC?e9"h
} .
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} C]@B~X1H^
= ~R3*GN
} p5 PON0dS
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归并排序: /IR5[67
kUBHK"}K
package org.rut.util.algorithm.support; +Gs;3jC^
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import org.rut.util.algorithm.SortUtil; -CNv=vj 3
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/** )4O`%9=M&
* @author treeroot Y2~{q Y
* @since 2006-2-2 YXOD
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* @version 1.0 Z~:lfCK`
*/ `o- <,
public class MergeSort implements SortUtil.Sort{ v\T1,Z@N^
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/* (non-Javadoc) ZjID<5#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~|jy$*m4A
*/ {:+^[rerj
public void sort(int[] data) {
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int[] temp=new int[data.length]; bpCe&*\6K
mergeSort(data,temp,0,data.length-1); =I3U.^:
} u01^ABn
h(K4AiGE
private void mergeSort(int[] data,int[] temp,int l,int r){ >}tG^ )os
int mid=(l+r)/2; LxGh *7K-
if(l==r) return ; _Xe< JJvq
mergeSort(data,temp,l,mid); UYLI>XSd
mergeSort(data,temp,mid+1,r); gpl!Iz~5
for(int i=l;i<=r;i++){ f4^_FK&
temp=data; 5,fzB~$TX(
} q&x#S_!
int i1=l; W u{nC
int i2=mid+1; Qc/J"<Lx
for(int cur=l;cur<=r;cur++){ ?Cl"jcQ*
if(i1==mid+1) 4H'&5
data[cur]=temp[i2++]; z<XS"4l?W
else if(i2>r) wN.Jyb
data[cur]=temp[i1++]; _JB3+0@
else if(temp[i1] data[cur]=temp[i1++]; \}c50}#0
else ~)(Dm+vZ
data[cur]=temp[i2++]; A>S2BL#=
} .w"O/6."
} 7qp|Msf},
.v!e=i}.
} XS@6jbLE
jR:Fih-}
改进后的归并排序: *2hzReM
u{^Kyo#v
package org.rut.util.algorithm.support; J>&GP#7}
o$;x[US
import org.rut.util.algorithm.SortUtil; 7?@v}%w
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/** 0}!lN{m?
* @author treeroot Er`PYE
J
* @since 2006-2-2 nz+KA\iW
* @version 1.0 R8)"M(u=l
*/ HF:PF"|3
public class ImprovedMergeSort implements SortUtil.Sort { bv0 %{u&
^TGHWCK!t
private static final int THRESHOLD = 10; 1lM0pl6M
J %t1T]y~
/* XhiC'.B_
* (non-Javadoc) u ""=9>0
* ZVL0S{V-mh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AseY.0
*/ "lt[)3*
public void sort(int[] data) { y{<7OTA)
int[] temp=new int[data.length]; kaLRI|hC
mergeSort(data,temp,0,data.length-1); lHU$A;
} &}ow-u9c3
Nx"?'-3Hm
private void mergeSort(int[] data, int[] temp, int l, int r) { X"]ZV]7(]s
int i, j, k; 622).N4
int mid = (l + r) / 2; [F$3mzx
if (l == r) e0P1FD<@
return; &2DW
if ((mid - l) >= THRESHOLD) *!/9?M{p
mergeSort(data, temp, l, mid); 2= _.K(
else %k~=iDk@
insertSort(data, l, mid - l + 1); wFD.3!
if ((r - mid) > THRESHOLD) B.o&%5dG
mergeSort(data, temp, mid + 1, r); GUxhCoxb
else sYL+;(#t
insertSort(data, mid + 1, r - mid); PSE![whK
bF.Aj8ZQ
for (i = l; i <= mid; i++) { $FoNEr&q
temp = data; \Z$*8z=
} eP)RP6ON{
for (j = 1; j <= r - mid; j++) { ZO,]h9?4
temp[r - j + 1] = data[j + mid]; B0:O]Ax6.^
} *\/UT
int a = temp[l]; cG<?AR?wDT
int b = temp[r]; pd|s7
for (i = l, j = r, k = l; k <= r; k++) { `7LdF,OdE
if (a < b) { hE;
data[k] = temp[i++]; bvoR?D\-"
a = temp; SF6n06UZu
} else { mVxS[Gq
data[k] = temp[j--]; m4EkL
b = temp[j]; (b(iL\B$D=
} |Bjb
} uwbj`lpf
} i}!CY@sW
nPKj%g3h
/** OlP#|x*
* @param data ]!/1qF
* @param l `0L!F"W
* @param i yEH30zSt
*/ EfOJ%Xr[,l
private void insertSort(int[] data, int start, int len) { %l>^q`p
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 8NLk`/
} noacnQ_I$
} !Ed';yfz\(
} >Zr`9$i
} v8LKv`I's
~($h9*\
堆排序: c[4Z_5B
]86U-`p
package org.rut.util.algorithm.support; "]sr4Jg=
Pd>hd0!.%
import org.rut.util.algorithm.SortUtil; n84*[d}t
$} ~:x_[
/** <jxTI%'f59
* @author treeroot 4B) prQ3
* @since 2006-2-2 =>4,/g3
* @version 1.0 ,<%],-Lt[
*/ 90Q}9T\
public class HeapSort implements SortUtil.Sort{ (}'0K?
`a]
/e
/* (non-Javadoc) ibEQ5 2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |Kb-oM&^#
*/ kYx|`-PA<r
public void sort(int[] data) { [ $B
MaxHeap h=new MaxHeap(); h T4fKc7P
h.init(data); 1SQ&mH/
for(int i=0;i h.remove(); E:#VS~
System.arraycopy(h.queue,1,data,0,data.length); 7GpSWM6
} 68d(6?OgW
iB{O"l@w
private static class MaxHeap{ =xg pr*
wuI+$?
void init(int[] data){ uS3J^=>@(a
this.queue=new int[data.length+1]; H~fZA)W 4Y
for(int i=0;i queue[++size]=data; ?NJ\l5'
fixUp(size); T~_+\w
} *joM[ML` 6
} %*zgN[/w
n hS=t8H
private int size=0; [/6IEt3}B
d-lC|5U%
private int[] queue; .pK_j~}P
cW%F%:b
public int get() { J1hc :I<;
return queue[1]; #X`j#"Ov2(
} x%5n& B
nTyKZ(#u
public void remove() { P'R!"
#
SortUtil.swap(queue,1,size--); ^dld\t:tV7
fixDown(1); ]&jXD=a"
} vA*!82
file://fixdown d?.ewsC
private void fixDown(int k) { /V^Gn;
int j; Quqts(Q) +
while ((j = k << 1) <= size) { !D!Q]M5oU
if (j < size %26amp;%26amp; queue[j] j++; !SMIb(~[z
if (queue[k]>queue[j]) file://不用交换
T32C=7
break; W^Wr
SortUtil.swap(queue,j,k); cR*D)'/tl
k = j; P|Dw+lQj
} IXDj;~GF
} 7o-umZ}8
private void fixUp(int k) { *0^!%Y'/4
while (k > 1) { >,yE;zuw
int j = k >> 1; 9LI#&\lba
if (queue[j]>queue[k]) N7v7b<6
break; m0DD|7}+
SortUtil.swap(queue,j,k); Z%E;*R2+:>
k = j; mmE\=i~
} G~5EAeG
} ~oWCTj-
;'~U5Po8
} l 8qCg/ew
5|z>_f.^pS
} N_Q)AXr)
Z?ZiK1) K
SortUtil: 4jbqV
T a8;
package org.rut.util.algorithm; <&^P1x<x
094~ s
import org.rut.util.algorithm.support.BubbleSort; +GqK$B(x7
import org.rut.util.algorithm.support.HeapSort; a|?&
import org.rut.util.algorithm.support.ImprovedMergeSort; W6%\Zwav?)
import org.rut.util.algorithm.support.ImprovedQuickSort; o
b;]
import org.rut.util.algorithm.support.InsertSort; oM\b>*
import org.rut.util.algorithm.support.MergeSort; N1/)Fk-z
import org.rut.util.algorithm.support.QuickSort; v<CZ.-r\j
import org.rut.util.algorithm.support.SelectionSort; ?&A)%6` ~
import org.rut.util.algorithm.support.ShellSort; gCfAy=-,V
tQ~vLPi$
/** Sp/t[\,'
* @author treeroot }.*"ezaZw
* @since 2006-2-2 M~/7thP{
* @version 1.0 sT8(f=^)8F
*/ [.:SV|AF#
public class SortUtil { 0>{&8:
public final static int INSERT = 1; 9lXjB_wG>
public final static int BUBBLE = 2; B\^myg4
public final static int SELECTION = 3; )bqSM&SO
public final static int SHELL = 4; <KY \sb9
public final static int QUICK = 5; {o>51fXc)
public final static int IMPROVED_QUICK = 6; D/U=zDpiB
public final static int MERGE = 7; 3T1t !q4/5
public final static int IMPROVED_MERGE = 8; x;N@_FZ7KY
public final static int HEAP = 9; a9LK}xc={
''D\E6c\
public static void sort(int[] data) { [7Fx#o=da
sort(data, IMPROVED_QUICK); ;[nomxu|?
} SfTTB'9
private static String[] name={ k]>1@t
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap"
]F'o
}; ?58,Ja
/FJ.W<hw
private static Sort[] impl=new Sort[]{ 1Jm'9iy3
new InsertSort(), v[l={am{/
new BubbleSort(), 7=3'PfS
new SelectionSort(), ^+J3E4
new ShellSort(), WNnB
s
new QuickSort(), sOVbz2\yb
new ImprovedQuickSort(), WMi$ATq
new MergeSort(), o|en"?4
new ImprovedMergeSort(), ioW&0?,Ym
new HeapSort() 1`& Yg(
}; h/goV
h4,g pV>t
public static String toString(int algorithm){ KT3n-Y-,
return name[algorithm-1]; ?zpN09e
} V|\dnVQ'-%
`*Ju0)g1
public static void sort(int[] data, int algorithm) { 5mqwNAv
impl[algorithm-1].sort(data); U0m 5Rc
} %|izt/B
9 $&$Fe
public static interface Sort { fW3awR{
public void sort(int[] data); "/kTEp
} ,&F4|{
'kb|!
public static void swap(int[] data, int i, int j) { xJ rKH
int temp = data; EEJ OJ<
data = data[j]; +tCNJ<S@l$
data[j] = temp; h_y;NB(w
} }7HR<%<7
} i-FsA