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。 >l]Xz*HE
插入排序: -]L6=
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package org.rut.util.algorithm.support; [\'%?BH(^
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import org.rut.util.algorithm.SortUtil; bG 7O
/** 2-&k^Gl!:
* @author treeroot 8N!b>??
* @since 2006-2-2 H0:E(}@
* @version 1.0 o#;b
*/ FI[A[*fi
public class InsertSort implements SortUtil.Sort{ 6TYY
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/* (non-Javadoc) .nB0 h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'ZT^PV\
*/ bmJ5MF]_fG
public void sort(int[] data) { KmMzH`t}`
int temp; 6{x(.=
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Ed"h16j?z
} 1cxrH+N
} zepm!JR1
} QU4h8}$
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} ;P;-}u
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冒泡排序: uPhK3nCGo
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package org.rut.util.algorithm.support; $RYa6"`
}
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import org.rut.util.algorithm.SortUtil; ~KHVY)@P
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/** <L`KzaA
* @author treeroot AB=daie
* @since 2006-2-2 #EO9UW5
* @version 1.0 prYs
$j
*/ 3wOZ4<B
public class BubbleSort implements SortUtil.Sort{ l9}3XI.=
@GkILFN
/* (non-Javadoc) _hN\10ydY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c0PIc^R(@
*/ 0C1pt5K
public void sort(int[] data) { @$lG@I,[
int temp; >XK
PTC5H
for(int i=0;i for(int j=data.length-1;j>i;j--){ IT(lF
if(data[j] SortUtil.swap(data,j,j-1); Q
7
} >{N9kWY
} *-MM<|Qt
} O]lSWEe
} q
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7{e% u#
} s@9vY\5[9
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选择排序: |k+8<\
*i]=f6G
package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; DBPRGQ
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/** #z&&M"*a|
* @author treeroot `4(e
* @since 2006-2-2 ZYI{i?Te#
* @version 1.0 E5)b
*/ 0*rQ3Z
public class SelectionSort implements SortUtil.Sort { bvS(@
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/* {. 2k6_1[
* (non-Javadoc) xgpi-l
* l;JA8o\x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bLe<G
*/ #cnq(S=.
public void sort(int[] data) { XM1WfjE\
int temp; 'SCidN(n
for (int i = 0; i < data.length; i++) { ]vgB4~4#LP
int lowIndex = i; nN*w~f"
for (int j = data.length - 1; j > i; j--) { Fz1_w$^
if (data[j] < data[lowIndex]) { 9{-EJ)
lowIndex = j; &0NFb^8+
} o=21|z
} h(M#f7'~&
SortUtil.swap(data,i,lowIndex); OlAs'TE^
} U 'R)x";=
} KHgBo}6
>}!mQ pAO
} 0o+6Q8q
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Shell排序: )Z(TCJ~~!
<z]cyXv/
package org.rut.util.algorithm.support; }RmU%IYc
x*?x=^I{
import org.rut.util.algorithm.SortUtil; 30XR
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/** 1jy9lP=
* @author treeroot lmfi
* @since 2006-2-2 <(-3_s6-
* @version 1.0 AT9q3
*/ c8L~S/t
public class ShellSort implements SortUtil.Sort{ ]T;EdK-
R,F[XI+=N
/* (non-Javadoc) LXEfPLS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /RHo1
*/ 7qj9&bEy
public void sort(int[] data) { kMtwiB|7j
for(int i=data.length/2;i>2;i/=2){ UVw~8o9s
for(int j=0;j insertSort(data,j,i); }RHn)}+
} ,!dh2xNH^
} |P -8HlOr
insertSort(data,0,1); RA G3o-
} ZCB_
bzX\IrJpOZ
/** po$ /7
* @param data dl~%MWAVb
* @param j AgFVv5
* @param i $% 1vW=d
*/ G8r``{C!
private void insertSort(int[] data, int start, int inc) { q{t*34R
int temp; ~ECD`N<YF
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 1jc,
Y.mP
} >B2:kY F
} ?Rj ~f{%g
} |1b_3?e
X LL/4 )
} 9'{}!-(xR
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快速排序: _cc#Qlw 7
tI7:5Cm
package org.rut.util.algorithm.support; #m[|2R
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import org.rut.util.algorithm.SortUtil; co9 .wB@
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/** w9o^s5n
* @author treeroot L+'Fs
* @since 2006-2-2 xA9:*>+>
* @version 1.0 DqX{'jj
*/ RTv
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public class QuickSort implements SortUtil.Sort{ Fd#m<"
7{I h_.#
/* (non-Javadoc) :dLAs@z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T'LIrf
*/ $ZNu+tn
Y
public void sort(int[] data) { t
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quickSort(data,0,data.length-1); cCa|YW^j
} *&d<yJM`b
private void quickSort(int[] data,int i,int j){
2'5 ]~
int pivotIndex=(i+j)/2; bks/`rIA
file://swap M?[h0{^K
SortUtil.swap(data,pivotIndex,j); +3&zN(
5cEcTJL[C
int k=partition(data,i-1,j,data[j]); ({NAMc*
SortUtil.swap(data,k,j); CYKr\DA
if((k-i)>1) quickSort(data,i,k-1); I(9R~q
if((j-k)>1) quickSort(data,k+1,j); z^GDJddG
;\[(- )f!=
} 1*dRK6
/** #vzEu
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* @param data 6<' 21
* @param i 2e|N@j
&
* @param j V=lfl1Ev0J
* @return P0$e~=Q^4
*/ fPrLM'
private int partition(int[] data, int l, int r,int pivot) { )x]3Zq
do{ tOOchu?=
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); HmZ{L +"
SortUtil.swap(data,l,r); y2+p1
} =b[_@zq]
while(l SortUtil.swap(data,l,r); 2CzaL,je[
return l; 1]}#)-
} efD)S92
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} iR\Hv'|
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改进后的快速排序: 4<x'ocKlD
b9"jtRTdz
package org.rut.util.algorithm.support; ?]rPRV
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import org.rut.util.algorithm.SortUtil; <&!v1yR
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/** !sRngXCXk?
* @author treeroot Q0\0f
* @since 2006-2-2 @&"Pci+-|
* @version 1.0 (708H_
*/ dVQ-k
public class ImprovedQuickSort implements SortUtil.Sort { S=xA[%5
C_ \q?>
private static int MAX_STACK_SIZE=4096; $46{<4.
private static int THRESHOLD=10; VqE~c
/* (non-Javadoc) < Z|Ep1W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a,o_`s<
*/ Sggq3l$Qc
public void sort(int[] data) { xP=/N!,#
int[] stack=new int[MAX_STACK_SIZE]; U#n#7G6fRp
e;GU
T:
int top=-1; Q`#4W3-,
int pivot; )XfzLF7
int pivotIndex,l,r; NjE</Empb%
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A[
stack[++top]=0; ^ZM0c>ev=l
stack[++top]=data.length-1; 63!rUB!
;Efcw[<
while(top>0){ `]v[5E
int j=stack[top--]; t |W)
int i=stack[top--]; f1PN|
v_S4hz6w\
pivotIndex=(i+j)/2; < pTTo
pivot=data[pivotIndex]; _al|'obomy
l/y]nw
SortUtil.swap(data,pivotIndex,j); 81%8{yn!$"
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file://partition N4K8
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l=i-1; H +bdsk
r=j; q@hp.(V
do{ dV?5Q_}
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); |KY EK|
SortUtil.swap(data,l,r); { m8+Wju}
} \uG`|Dn
while(l SortUtil.swap(data,l,r); a4gi,pz$]
SortUtil.swap(data,l,j); 7*w VI+
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if((l-i)>THRESHOLD){ fWGOP~0
stack[++top]=i; 6+K_ Z\
stack[++top]=l-1; !}M,
} *FR$vLGn
if((j-l)>THRESHOLD){ Q6C-4ja
stack[++top]=l+1; w>xV
stack[++top]=j; 'rb'7=z5
} rSP_:}
f DgD@YC D
} iO1nwl !#
file://new InsertSort().sort(data); Ap\AP{S4
insertSort(data); fR-C0"c
} $mA5@O~C5\
/** !.5),2
* @param data \
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*/ IO.<q,pP!_
private void insertSort(int[] data) { -m 5}#P89
int temp; @LD6:gy
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); e yw'7
} ^a9 oKI9n
} ]"fsW 9s
} O';ew)tI
Ek.&Sf$cd'
} u3tZ[Y2 c
}b["Jk\2
归并排序: HO|-@yOF^
cm>E[SHr
package org.rut.util.algorithm.support; ZX`J8lZP
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import org.rut.util.algorithm.SortUtil; @fn6<3
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/** 6a}r( yP
* @author treeroot GSVdb/+
* @since 2006-2-2 vrl[BPI
* @version 1.0 Vj^dD9:
*/ ^Ip3A
public class MergeSort implements SortUtil.Sort{ uf) Oy7FQ
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/* (non-Javadoc) Db03Nk>#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =LH}YUmd
*/ ?p8Qx\%*
public void sort(int[] data) { ?KN:r E
int[] temp=new int[data.length]; e 3@x*XI
mergeSort(data,temp,0,data.length-1); Q2'eQ0W{o
} H"YL
k
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private void mergeSort(int[] data,int[] temp,int l,int r){ 9k2,3It
int mid=(l+r)/2; hFb
fNB3
if(l==r) return ; jq oPLbxT
mergeSort(data,temp,l,mid); nX
x=1*X
mergeSort(data,temp,mid+1,r); a>Re^GT+z
for(int i=l;i<=r;i++){ bejGfc
temp=data; Kr3];(w{
} 6&!l'[hU
int i1=l; P1d,8~;
int i2=mid+1; LDX*<(
for(int cur=l;cur<=r;cur++){ pzEABA
if(i1==mid+1) el@XK}<dr
data[cur]=temp[i2++]; @W9H9PWv&
else if(i2>r) lCFU1 GHH
data[cur]=temp[i1++]; KRk~w]
else if(temp[i1] data[cur]=temp[i1++]; IRB& j%LA
else lBiovT
data[cur]=temp[i2++]; kEAhTh&g*
} wu^q`!ml
} EzP#Mnz^
zzf7S%1I
} 'Oy5e@G+?
v>I<|
改进后的归并排序: =J.EH|
9t}xXk
package org.rut.util.algorithm.support; Jr?!Mh-
zz3 r<?#5
import org.rut.util.algorithm.SortUtil; Qp 69Sk@H{
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/** 3/tJDb5
* @author treeroot GN%<"I.
* @since 2006-2-2 8nu> gA
* @version 1.0 $h]NXC6J
*/ ((9YG
public class ImprovedMergeSort implements SortUtil.Sort { syMm`/*/G-
$B ?? Ip?P
private static final int THRESHOLD = 10; C38XQLC
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/* 5ZUy:
* (non-Javadoc) y*|L:!
* FG _,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P8]ORQ6ZF
*/ 9TW8o}k`
public void sort(int[] data) { E@]sq A
int[] temp=new int[data.length]; mrReast
mergeSort(data,temp,0,data.length-1); w=$'Lt!
} %xh?!s|G(
VK$zq5D
private void mergeSort(int[] data, int[] temp, int l, int r) { _M&{^d
int i, j, k; P09,P
int mid = (l + r) / 2; .SBc5KX
if (l == r) F%y{%
C7l
return; F b2p(.
if ((mid - l) >= THRESHOLD) 8iOO1I?+
mergeSort(data, temp, l, mid); J2=*-O:
else [^Q&suy
insertSort(data, l, mid - l + 1); 5d(qtFH1
if ((r - mid) > THRESHOLD) PgTDjEo
mergeSort(data, temp, mid + 1, r); T#Fn:6_=
else ,=x
RoXYB}
insertSort(data, mid + 1, r - mid); [Q=4P*G}X
.c|9..Cq=
for (i = l; i <= mid; i++) { a6P!Wzb
temp = data; 2$
} q:W q8
for (j = 1; j <= r - mid; j++) { }oV3EIH
temp[r - j + 1] = data[j + mid]; WySNL#>a
} a/QIJ*0
int a = temp[l]; mUiOD$rO
int b = temp[r]; (A2U~j?Ry}
for (i = l, j = r, k = l; k <= r; k++) { F],TG&>5
if (a < b) { htQ;m)>J:
data[k] = temp[i++]; .$UTH@;7
a = temp; 0}6QO
} else { aQxe)
data[k] = temp[j--]; 4Sqvhz
b = temp[j]; QaIi.*tic
} Z0{f
} Ls lM$
} PVZEB
:l4^iSf
/** )Kxs@F
* @param data *>G^!e.u
* @param l !B0v<+;P8
* @param i {`tHJ|8
*/ bGhhh/n
private void insertSort(int[] data, int start, int len) { G,+xT}@wu
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); s z;=mMr/Z
} A&D2T
} L,f^mX0<
} }<E sS
} ?Ozk^#H[
o]dK^[/*
堆排序: |:~("rA+v
[O.LUR;
package org.rut.util.algorithm.support; hgF21Oj9
8[vl3C
import org.rut.util.algorithm.SortUtil; { +i; e]c
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/** [3 Wsc`Q
* @author treeroot $0S.@wUG
* @since 2006-2-2 &z7N\n
* @version 1.0 \Sz4Gr0g3Z
*/ E|KLK4]
public class HeapSort implements SortUtil.Sort{ `HE>%=]b
|:!EHFr
/* (non-Javadoc) u40b?
n.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l|4xKBCV]
*/ gEcnn.(S
public void sort(int[] data) { .Y=Z!Q
MaxHeap h=new MaxHeap(); okd
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h.init(data); >FK)p
for(int i=0;i h.remove(); BaNU}@
System.arraycopy(h.queue,1,data,0,data.length); yHa:?u6
} k1~nd=p
oyi7YRvwd
private static class MaxHeap{ C*Y
:w
CDwFVR'_Af
void init(int[] data){ j]cXLY
this.queue=new int[data.length+1]; >"PqQO
for(int i=0;i queue[++size]=data; ?=pZmvQg
fixUp(size); 0jip::x
} 3Vb=6-|
} a:(: :m
`\WcF7
private int size=0; wfU&{7yt
dA_V:HP
private int[] queue; b7>,-O
[~Z'xY
y
public int get() { 7Y_fF1-wY
return queue[1]; YI? C-,
} =: v><
1OfSq1G>v$
public void remove() { *'AS^2'
SortUtil.swap(queue,1,size--); ZmYSi$B
fixDown(1); /w}B07.
} @?^LxqAWA
file://fixdown 1b
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private void fixDown(int k) { iA^+/Lt
int j; jU3;jm.)
while ((j = k << 1) <= size) { :<WQ;q
if (j < size %26amp;%26amp; queue[j] j++; GP7)m
if (queue[k]>queue[j]) file://不用交换 JPoK\-9NT
break; nDoiG#N0
SortUtil.swap(queue,j,k); JtrDZ;^@
k = j; TJ%]{%F
} #)h
~.D{
} n.)[MC}
private void fixUp(int k) { &xiDG=I#
while (k > 1) { f2w=ln
int j = k >> 1; +=B}R
if (queue[j]>queue[k]) 9,EaN{GM
break; w?$u! X
SortUtil.swap(queue,j,k); SJ WP8+
k = j; ah!O&ECh
} afP&+ 5t@O
} h,WY2Hr
&8_#hne_
} 0@FM^ejA#
Oih2UrF
} uZiY<(X
sG1]A:_<C
SortUtil: cLyuCaH>c
*_).UAP.
package org.rut.util.algorithm; b[[6X
}fZ=T4r
import org.rut.util.algorithm.support.BubbleSort; &fd4IO/O
import org.rut.util.algorithm.support.HeapSort; :@@A
import org.rut.util.algorithm.support.ImprovedMergeSort; D>7_P7]y
import org.rut.util.algorithm.support.ImprovedQuickSort; ?"8A^
^
import org.rut.util.algorithm.support.InsertSort; }jY[| >z
import org.rut.util.algorithm.support.MergeSort; R$;&O.
5M
import org.rut.util.algorithm.support.QuickSort; k'I_,Z<,
import org.rut.util.algorithm.support.SelectionSort; 4wj|
import org.rut.util.algorithm.support.ShellSort; 0iZ9a/v
ks#Z~6+3
/** C8W`Oly:]
* @author treeroot ~j&:)a'^
* @since 2006-2-2 `)C`_g3Ew
* @version 1.0 =Wy`X0h
*/ wAOVH].
public class SortUtil { 3
cW"VrFy9
public final static int INSERT = 1; C94UF7al
public final static int BUBBLE = 2; 'iISbOM
public final static int SELECTION = 3; B{o\RNU
public final static int SHELL = 4; 4d._Hd='
public final static int QUICK = 5; ~B*\k^t`
public final static int IMPROVED_QUICK = 6; M7<#=pX&
public final static int MERGE = 7; n`T[eb~
public final static int IMPROVED_MERGE = 8; +j: Ld(
public final static int HEAP = 9;
T!xy^n]}
:9
iOuu
public static void sort(int[] data) { kq.h\[
sort(data, IMPROVED_QUICK); O9=H
[b
} Vv)E41
private static String[] name={ x(zZqOed
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Nl<,rD+KSD
}; !@Vp Bl
Qp{-!*
private static Sort[] impl=new Sort[]{ 3pv1L~ ZI
new InsertSort(), MirBJL
new BubbleSort(), 0#/
6P&6
new SelectionSort(), 9c %Tv
new ShellSort(), <IDzv'
new QuickSort(), <.(/#=2
new ImprovedQuickSort(), Y9L6W+=T
new MergeSort(), ZpctsCz]
new ImprovedMergeSort(), X|1YGZJ
new HeapSort() 5_C#_=E
}; 7c]Ai
(<JDD]J
public static String toString(int algorithm){ RZh)0S>J
return name[algorithm-1]; {bW3%iU
} "EhO )lR
v!h-h&p O7
public static void sort(int[] data, int algorithm) { fO(S+}
impl[algorithm-1].sort(data); AX RNV
} \\Tp40m+
Rs[]i;
public static interface Sort { g2<S4
public void sort(int[] data); K/+C6Y?
} [gp:nxyfQm
-f gKSJ7
public static void swap(int[] data, int i, int j) { }/0dfes
int temp = data; c!^}!32j)
data = data[j]; Fh$&puF2
data[j] = temp; J\D3fh97-
} VDY1F_Fk
} g9Gy3zk=