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。 tH|Q4C
插入排序: f8_UIdM7
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package org.rut.util.algorithm.support; @ke})0`5
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import org.rut.util.algorithm.SortUtil; "jN-Yd,z
/** `/j|Rb|eow
* @author treeroot `0WA!(W
* @since 2006-2-2 H2R^t{w
* @version 1.0 ] GPz>k
*/ DP'Dg /D
public class InsertSort implements SortUtil.Sort{ |>fS"u
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/* (non-Javadoc) `h{mj|~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bqwW9D(
*/ Mh/>qyS*2
public void sort(int[] data) { "Ohpb!J9
int temp; x]01j4HJ
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 48NXj\L[y
} 6!D
} oHFDg?Z`
} 58ZiCvqv
i}{Q\#=#
} -3%)nV
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冒泡排序: vrO$8* sy
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package org.rut.util.algorithm.support; {-]HYk
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import org.rut.util.algorithm.SortUtil; bFxJ|
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/** G y7x?
* @author treeroot Vwg|? sG_
* @since 2006-2-2 Lj* =*V
* @version 1.0 1,!\7@<CT
*/ yl+)I
public class BubbleSort implements SortUtil.Sort{ K[yJu 4
@X><lz
/* (non-Javadoc) 34M.xB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) csA.3|rv
*/ tnbs]6
public void sort(int[] data) { +dpj?
int temp; =WRU<`\
for(int i=0;i for(int j=data.length-1;j>i;j--){ 72.IhBNtT
if(data[j] SortUtil.swap(data,j,j-1); v7u}nx
} hg/&[/eodm
} e>9{36~jh
} !td.ks0
} _llaH
l'8TA~
} =QO[zke:
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选择排序: b'"%
;pK"N:|
package org.rut.util.algorithm.support; $5(%M8qmQ
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import org.rut.util.algorithm.SortUtil; 5!{g6=(
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t
/** *K)53QKlE
* @author treeroot 6]49kHgMhe
* @since 2006-2-2 eL4@%
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* @version 1.0 "T[jQr
*/ 69[k
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public class SelectionSort implements SortUtil.Sort { zszx@`/3
qfe%\krN{i
/* z`7C)p:
* (non-Javadoc) *fX)=?h56
* &b8D'XQu
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J%B?YO,
*/ zQfxw?~A
public void sort(int[] data) { yC$7XSr=
int temp; -T6%3>h
for (int i = 0; i < data.length; i++) { >{=RQgGy
int lowIndex = i; YAG3PWmD
for (int j = data.length - 1; j > i; j--) { ADUI@#vk
if (data[j] < data[lowIndex]) { ")buDU6_
lowIndex = j; <4bo7XH
} .]l2)OlLQ
} l@jJJ)Qyk
SortUtil.swap(data,i,lowIndex); .HJHJ.Js8X
} B\w`)c
} DQQjx>CK
IKpx~
} FeRuZww._J
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Shell排序: rqo<Xt`
$^ 3 f}IzA
package org.rut.util.algorithm.support; v> PHn69PU
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import org.rut.util.algorithm.SortUtil; bv];Gk*Z-
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/** }TLC b/+
* @author treeroot bcs(#
* @since 2006-2-2 ^:j:;\;
* @version 1.0 <p
.[E]a2_
*/ g5\B- 3{
public class ShellSort implements SortUtil.Sort{ \H12~=p`B
en":
/* (non-Javadoc) Lj,%pz J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @SB+u+mOS
*/ 4w[ta?&6B
public void sort(int[] data) { A+8b]t_k
for(int i=data.length/2;i>2;i/=2){ ~'mhC46d
for(int j=0;j insertSort(data,j,i); LvdMx]*SSr
} @h3)!#\N
} 'm:B(N@+
insertSort(data,0,1); |sAg@kM
} {`
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/** +y(h/NcQ
* @param data v[GHqZ
* @param j g/gLG:C
* @param i Rgu^>
~
*/ k]sT'}[n
private void insertSort(int[] data, int start, int inc) { zb$U'D_-f
int temp; gC- 0je
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); xn[di-LF
} Xs_y!l
} &[pwLYf7
} \)WjkhG<w#
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} X9wi:
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快速排序: _=#mmZkq
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package org.rut.util.algorithm.support; ;zODp+4@Q
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import org.rut.util.algorithm.SortUtil; w ?aLWySYT
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/** %4J?xhd
* @author treeroot UPF=X)!M
* @since 2006-2-2 O:)@J b2
* @version 1.0 6 H.Da]hk
*/ y
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public class QuickSort implements SortUtil.Sort{ 1uMdgrJRR
#u^d3
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/* (non-Javadoc) 39#>C~BOl
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _L>n!"E/
*/ X.qKG0i
public void sort(int[] data) { p10->BBg
quickSort(data,0,data.length-1); WkE;tC*
} l:HuG!
private void quickSort(int[] data,int i,int j){ e+U o-CO
int pivotIndex=(i+j)/2; jT',+
file://swap /8T{bJ5
SortUtil.swap(data,pivotIndex,j); jL&F7itP
Sq>UMfl&
int k=partition(data,i-1,j,data[j]); 6yqp<D0SP)
SortUtil.swap(data,k,j); 'z/hj>B<
if((k-i)>1) quickSort(data,i,k-1); ;p8xL)mUP
if((j-k)>1) quickSort(data,k+1,j); .rHO7c,P~
>{Djx
} >E3OYa?G
/** *6DKUCA/
* @param data J%'|IwA
* @param i t[Q\T0E
* @param j AsOI`@FV
* @return ~7g6o^A>
*/ SrIynO
private int partition(int[] data, int l, int r,int pivot) { SbY i|V,H
do{ ;7}*Xr|
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Q>$v~v?9
SortUtil.swap(data,l,r); b._pG(o1
} e6Y0G,K
while(l SortUtil.swap(data,l,r); Tec6]
:
return l; ?fGY,<c
} c9V'Z d#
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} %Ok.XBS)
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改进后的快速排序: b.(^CYYQ
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package org.rut.util.algorithm.support; =zdRoXBY[b
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import org.rut.util.algorithm.SortUtil; kmwFw>#
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/** Wp $\>
* @author treeroot *&s_u)b
* @since 2006-2-2 FsjblB3?E
* @version 1.0 R4?/7
*/ ja2LXM
public class ImprovedQuickSort implements SortUtil.Sort { .vg;K@{
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private static int MAX_STACK_SIZE=4096; <>cajQ@
private static int THRESHOLD=10; G6FknYj
/* (non-Javadoc) DwPl,@T_i\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qmhHHFjQ
*/ I~,*Rgv/Z
public void sort(int[] data) { =x>KA*O1
int[] stack=new int[MAX_STACK_SIZE]; MFrVGEQBRL
L,$9)`j
int top=-1; 4?`7XJ0a
int pivot; X(~NpL R
int pivotIndex,l,r; _F3 :j9^
G9;WO*
stack[++top]=0; kN)P-![
stack[++top]=data.length-1; 8Pq|jK "
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while(top>0){ Onao'sjY
int j=stack[top--]; +m_quQ/ys
int i=stack[top--]; $|AxQQ%f
eG.?s;J0
pivotIndex=(i+j)/2; pV_2JXM~@
pivot=data[pivotIndex]; *5^h>Vk/
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SortUtil.swap(data,pivotIndex,j); *`[LsG]ZF
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file://partition 5^qI6
U
l=i-1; WE\V<MGS/
r=j; c(fwl`y!x
do{ %j
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); R b'"09)$
SortUtil.swap(data,l,r); b@Fa|>"_
} wNn6".S
while(l SortUtil.swap(data,l,r); wml`3$"cf
SortUtil.swap(data,l,j); EyhQjsaT
-70Ut
4B
if((l-i)>THRESHOLD){ .M04n\
stack[++top]=i; >Tw|SK+3
stack[++top]=l-1; |X>:"?4t
} 5bk5EE`
if((j-l)>THRESHOLD){ x@yF|8
stack[++top]=l+1; =73wngw
stack[++top]=j; yA~W|q(/V
} dbw`E"g
Y:O%xtGi
} {=TD^>?
file://new InsertSort().sort(data); "~tEmMz
insertSort(data); %%*t{0!H+
} l&zd7BM9(
/** a4?:suX$
* @param data P:=3;d{v
*/ ,{$:Q}`
private void insertSort(int[] data) { 7P=j2;7 v
int temp; ."dmL=
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); p\Jz<dkN1
} RDZl@ps8
} koFY7;_<?
} k@^)>J^
LbnR=B!
} ;L|%H/SH
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归并排序: ^$VOC>>9
WL<Cj_N_{H
package org.rut.util.algorithm.support; :WE(1!P@
QHOem=B
import org.rut.util.algorithm.SortUtil; C;_10Rb2ut
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/** 7tJPjp4l
* @author treeroot ^J?I-LG
* @since 2006-2-2 bUt?VR}P(
* @version 1.0 DJhi>!xJ
*/ $Ad 5hkz
public class MergeSort implements SortUtil.Sort{ 3eD#[jkAI;
rk `x81
/* (non-Javadoc) +h"RXwlBM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |dK_^~;o
*/ UW!!!
public void sort(int[] data) { lf&g *%?1
int[] temp=new int[data.length]; ]h,XRD K
mergeSort(data,temp,0,data.length-1); +v/_R{ M
} 9 u{#S}c`
~!\n
private void mergeSort(int[] data,int[] temp,int l,int r){ U]O7RH
int mid=(l+r)/2; r/SV.`
k
if(l==r) return ; |oa9 g2
mergeSort(data,temp,l,mid); IWX%6*Zz
mergeSort(data,temp,mid+1,r); !ce5pA
for(int i=l;i<=r;i++){ ZdfIe~Oni
temp=data; lIz"mk
} pno]Bld'z
int i1=l; jU/0a=h9
int i2=mid+1; Zj%l (OVq
for(int cur=l;cur<=r;cur++){ r!'\$(m E
if(i1==mid+1) WOiw 0
data[cur]=temp[i2++]; $3k5hDA0e
else if(i2>r) "*a^_tsT?i
data[cur]=temp[i1++]; /2 ')u|
else if(temp[i1] data[cur]=temp[i1++]; gq!|0
else 1d,;e:=j
data[cur]=temp[i2++];
hT]\*},
} X0O@,
} zQ&`|kS
a~jM^b;VN
}
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改进后的归并排序: 1)U%p
n]jZ2{g+
package org.rut.util.algorithm.support; >d%;+2
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import org.rut.util.algorithm.SortUtil; ;b-Y$<
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/** QE1DTU
* @author treeroot #**vIwX-Q
* @since 2006-2-2 2Ck'A0d
* @version 1.0 bd_&=VLTC
*/ 0j@gC0xu)|
public class ImprovedMergeSort implements SortUtil.Sort { <KlG#7M>
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private static final int THRESHOLD = 10; CvS}U%
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/* )OpB\k
* (non-Javadoc) d ]R&mp|'
* wGr5V!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
!*5vXN
*/ &==X.2XW
public void sort(int[] data) { hE@s~~JYd
int[] temp=new int[data.length]; $)8b)Tb
mergeSort(data,temp,0,data.length-1); gTa6%GM>
} =^#^Mq)
6qp2C]9=
private void mergeSort(int[] data, int[] temp, int l, int r) { VPBlU
int i, j, k; qVjl8%)
int mid = (l + r) / 2; uY{V^c#mv
if (l == r) ziPE(B
return; J0K25w
if ((mid - l) >= THRESHOLD) v0v%+F#>@
mergeSort(data, temp, l, mid); H=,0p
else w_4/::K*
insertSort(data, l, mid - l + 1); g:V8"'
if ((r - mid) > THRESHOLD) ]rU$0)VN
mergeSort(data, temp, mid + 1, r); [Vzp D 4
else tn>z%6;&Z
insertSort(data, mid + 1, r - mid); !(QDhnx}9c
#[=%+ *Q
for (i = l; i <= mid; i++) { D;
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temp = data; h' #C$i
} FyY<Vx'yQ
for (j = 1; j <= r - mid; j++) { M`{~AIqd(
temp[r - j + 1] = data[j + mid]; m$6u K0
} F6,[!.wl
int a = temp[l]; ) bRj'*
int b = temp[r]; )4u6{-|A
for (i = l, j = r, k = l; k <= r; k++) { AT$eTZ]M
if (a < b) { Cp {
j+Ia
data[k] = temp[i++]; Ky(=O1Ufu
a = temp; 4K{<R!2I
} else { 1HPYW7jk@"
data[k] = temp[j--]; <e)5$Aj
b = temp[j]; <?h`
} yCC.j%@
} >AFX}N#
} :56f
Ut|G.%1Vd%
/** -SO`wL NV
* @param data ]m&cVy&
* @param l k?[|8H~2C
* @param i "eRf3Q7w:
*/ *|97 g*G(
private void insertSort(int[] data, int start, int len) { fjGYp
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 3"9'MDKH
} 9'tOF
} =gG_ %]``R
} ;G
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} b3$aPwv
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堆排序: kta`[%KmIZ
,AX7~;hpq
package org.rut.util.algorithm.support; I" AgRa
7NG^I6WP-
import org.rut.util.algorithm.SortUtil; 0qND 2_
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/** q].n1w[
* @author treeroot &tKr
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* @since 2006-2-2 WcE{1&PXx
* @version 1.0 ?<7o\Xk#{
*/ KB3zQJY
public class HeapSort implements SortUtil.Sort{ 0H<&*U_V
%(72+B70R
/* (non-Javadoc) 1lAx"VL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "'M>%m u
*/ /d<"{\o
public void sort(int[] data) { r@j$$Pk`
MaxHeap h=new MaxHeap(); d`M]>EDXp
h.init(data); $]H^?
for(int i=0;i h.remove(); Hjho!np
System.arraycopy(h.queue,1,data,0,data.length); y}TiN!M
} {i}z|'!
e@B+\1
private static class MaxHeap{ \=kre+g
c(:qid
void init(int[] data){ +1`Zu$|
this.queue=new int[data.length+1]; @%8Xa7+
for(int i=0;i queue[++size]=data; o'9K8q\1
fixUp(size); aN\psg
} yW3X<
} X[F<sxw
XI>|"*-l
private int size=0; aq a%B
T!GX^nn*O
private int[] queue; 1O<Gg<<,e
f{]eb1
public int get() { 0H|U9
return queue[1]; ve#*qz Y
} lP9XqQ(
iymOq9
public void remove() { JjH#,@'.
SortUtil.swap(queue,1,size--); {u/G!{N$
fixDown(1); Z @:5vo
} u!iBAr5
file://fixdown M!KHBr
private void fixDown(int k) { 8UAbTqB-
int j; ulc m
while ((j = k << 1) <= size) { X<6Ro
es2
if (j < size %26amp;%26amp; queue[j] j++; co
<ATx
if (queue[k]>queue[j]) file://不用交换 OI=LuWGQE1
break; 7.-g=Rcz
SortUtil.swap(queue,j,k); ZjlFr(
k = j; cy0
%tsB|
} \ow3_^Bk
} u9d4zR
private void fixUp(int k) { bo;;\>k
while (k > 1) { Cd>GY
int j = k >> 1; x2 s%qZ#
if (queue[j]>queue[k]) 1-HL#y*7$
break; }]8n3&*
SortUtil.swap(queue,j,k); 2!6+>nvO
k = j; 0zSRk]i.f
} )kMA_\$,
} gnAM}
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} *6Ojv-
G|5
bp'qrcFuiL
} (WW*yv.J
[# X:!xcl
SortUtil: XDtr{r6z
d+
LEi^
package org.rut.util.algorithm; 3'
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.d\<}\zZ7J
import org.rut.util.algorithm.support.BubbleSort; GrwoV~
import org.rut.util.algorithm.support.HeapSort; ul{u^ j
import org.rut.util.algorithm.support.ImprovedMergeSort; 6]GEn=t
import org.rut.util.algorithm.support.ImprovedQuickSort; r6B\yH2
import org.rut.util.algorithm.support.InsertSort; fB\+.eN
import org.rut.util.algorithm.support.MergeSort; AnB]f~Yjl
import org.rut.util.algorithm.support.QuickSort; Qv3g
4iJ
import org.rut.util.algorithm.support.SelectionSort; R.(cGZS
import org.rut.util.algorithm.support.ShellSort; *b{C`[
=V
q>$[<TsE&}
/** I'23$IzPA
* @author treeroot n@3(bl5{
* @since 2006-2-2 XIv{jzgF
* @version 1.0 XM0;cF
*/ n?@3+wG
public class SortUtil { c"vF i~Db
public final static int INSERT = 1; 3f 1@<7*
public final static int BUBBLE = 2; &VY(W{\eY
public final static int SELECTION = 3; (-V=&F_
public final static int SHELL = 4; oiG@_YtR
public final static int QUICK = 5; ~:65e 8K
public final static int IMPROVED_QUICK = 6; ?J;*
public final static int MERGE = 7; oD5VE
public final static int IMPROVED_MERGE = 8; os\"(*dix
public final static int HEAP = 9; c0lVt)pr/
c|f)k:Q
public static void sort(int[] data) { D$sG1*@s-
sort(data, IMPROVED_QUICK); k+(UpO=/*
} R]oi&"H@r)
private static String[] name={ 9.bMA<X
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" (h"Yw
}; v-*CE[
+y+-~;5iv
private static Sort[] impl=new Sort[]{ {gSR49!Q
new InsertSort(), IIN"'7Z^R
new BubbleSort(), M6ol/.G[
new SelectionSort(), *`}4]OGv.
new ShellSort(), {{FA"NW
new QuickSort(), 5kwDmJy
new ImprovedQuickSort(), S-FoyID\H
new MergeSort(), won(HK\1p
new ImprovedMergeSort(), Ov
vM)?^#
new HeapSort() !PCw-&
}; =~Ac=j!q
?K<m.+4b*y
public static String toString(int algorithm){ tDuQ+|~M
return name[algorithm-1]; P,S$qD*4
} =y3gnb6
w|6;Pf~1y)
public static void sort(int[] data, int algorithm) { jGB2`^&d
impl[algorithm-1].sort(data); 9]Q\Pr\Ub$
} G$ l>By
O*af`J{
public static interface Sort { #
;,b4O7@
public void sort(int[] data); _IAvFJI
} S9sFC!s1g
R5QSf+/T4
public static void swap(int[] data, int i, int j) { 2<$C6J0HM
int temp = data; 5t$ZEp-
data = data[j]; }2sc|K^
data[j] = temp; 8aCa(Xu(H
} y{Wtm7fnA
} #S[:Q.0 ;