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。 7r4|>F
插入排序: 7; e$ sr
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package org.rut.util.algorithm.support; r1)@ 7Nt
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import org.rut.util.algorithm.SortUtil; GnzKDDH
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/** da/Tms`T
* @author treeroot chF@',9t
* @since 2006-2-2 gLL8-T[9
* @version 1.0 -x?I6>{
*/ $+$S}i=
public class InsertSort implements SortUtil.Sort{ t5Oeb<REz
O.% $oV
/* (non-Javadoc) :]hNw1e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #7}1W[y9}l
*/ y:R!E *.L'
public void sort(int[] data) { m=hUHA,p4
int temp; <)dHe:
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;mAlF>6]\
} uVn"'p-
} OmR)W'
} X5gI'u
j aEUz5
} ZcLW8L
e
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冒泡排序: 5v`[c+@F
0<";9qN)6
package org.rut.util.algorithm.support; v?=y9lEH@%
p&nPzZQL(
import org.rut.util.algorithm.SortUtil; 4Lb!Au|Y
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/** vk&6L%_~a
* @author treeroot ^I CSs]}1
* @since 2006-2-2 +'VSD`BR
* @version 1.0 -0>gq$/N=^
*/ +338z<'Z!
public class BubbleSort implements SortUtil.Sort{ 4{rqGC/
!F|#TETrt
/* (non-Javadoc) Sbp].3^j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W:gpcR]>
*/ CVy\']
public void sort(int[] data) { nde_%d$
int temp; .*Mp+Q}^
for(int i=0;i for(int j=data.length-1;j>i;j--){ ~stJO]) a
if(data[j] SortUtil.swap(data,j,j-1); $,)PO
Z
} IGQcQ/M
} Y*Ra!]62
} ls*bCe
} H6t'V%Ys
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} wJ%;\06
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选择排序: CVt:tV
n LD1j
package org.rut.util.algorithm.support; N r,Qu8
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import org.rut.util.algorithm.SortUtil; rijavZS6
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/** fFYfb4o
* @author treeroot "!w#E6gU
* @since 2006-2-2 $~+(si2
* @version 1.0 a-bj! Rs
*/ Pb`Uxv
public class SelectionSort implements SortUtil.Sort {
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X;&Iu{&=
/* <c77GimD?
* (non-Javadoc) QB.QG!@
* SYE+A`a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2t[P-on
*/ dtT:,&
public void sort(int[] data) { @y!oKF
int temp; Mm)yabP
for (int i = 0; i < data.length; i++) { j"F?^0aR,Q
int lowIndex = i; I?&/J4o:
for (int j = data.length - 1; j > i; j--) { 8v }B-cS
if (data[j] < data[lowIndex]) { 1p5n}|
lowIndex = j; 1)o6jGQ
} >'1[Bh
} T@%\?=P
SortUtil.swap(data,i,lowIndex); ?yc{@|
} bt{b%r
} Ls`[7w
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} 'CMbqLk#
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Shell排序: akA7))Q
SNJSRqWL/
package org.rut.util.algorithm.support; dM=45$\q
:;hz!6!
import org.rut.util.algorithm.SortUtil; 7,lnfCm H
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/** 5MCnGg@
* @author treeroot ve]hE}o/}
* @since 2006-2-2 dfP4SJqq
* @version 1.0 /rIyW?& f
*/ lQM&q
public class ShellSort implements SortUtil.Sort{ sg8[TFX@Z
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/* (non-Javadoc) hp1+9vEN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;
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*/ L</k+a?H!
public void sort(int[] data) { RY
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for(int i=data.length/2;i>2;i/=2){ {vq| 0t\-
for(int j=0;j insertSort(data,j,i); u*T(n s
l
} "g,`K s ];
} O
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insertSort(data,0,1); ]t0St~qUL)
} J%u,qF}h
VIHuo,
/** F[v:&fle
* @param data r3B}d*v
* @param j ]9N&I/-
* @param i Mbp7%^E"A
*/ #CV]S4/^
private void insertSort(int[] data, int start, int inc) { r~z'QG6v/
int temp; eaAGlEW6J
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); F8S>Ld
} \%|Xf[AX
} PjD9D.
} ;1HzY\d%<
q6,z 1A"
} |h?2~D!+d
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快速排序: Fw S>V2R
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package org.rut.util.algorithm.support; M!46^q~-
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import org.rut.util.algorithm.SortUtil; N;`/>R4|I
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/** gYCr,-_i
* @author treeroot ?<`oKBn
* @since 2006-2-2 :h(`eC
* @version 1.0 )q66^%;S
*/ Cz)&R^
public class QuickSort implements SortUtil.Sort{ s+?2oPa
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/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XEnu0gr
*/ W=#AfPi$&
public void sort(int[] data) { }v's>Ae~p
quickSort(data,0,data.length-1); PY;tu#W!%
} Khb Ku0Z
private void quickSort(int[] data,int i,int j){ AhD C5ue=
int pivotIndex=(i+j)/2; dU#-;/}o
file://swap CLTkyS)C
SortUtil.swap(data,pivotIndex,j); q)mG6Su
d
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int k=partition(data,i-1,j,data[j]); Z\$M)e8n
SortUtil.swap(data,k,j); -V4%f{9T3
if((k-i)>1) quickSort(data,i,k-1); QgI[#d{
if((j-k)>1) quickSort(data,k+1,j); y^"@$
~nTj't2R
} kU+|QBA@
/** ruQt0q,W3%
* @param data pCDN9*0/
* @param i gW,hI>
* @param j x_/}R3d
* @return n1JtY75#,/
*/ j*5IRzK1%0
private int partition(int[] data, int l, int r,int pivot) { {l)$9!
do{ EJ>&\Iq
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); *f3S tX
SortUtil.swap(data,l,r); +J|H~`
} |{&M#qXe
while(l SortUtil.swap(data,l,r); )S
7+y6f&*
return l; +SR{FF
} S3:AitGJ
d=n@#|3
} Kv(R|d6Lp
n m<?oI*\
改进后的快速排序: ~ ;LzTL
s-_D,$ |
package org.rut.util.algorithm.support; =#/Kg_RKL
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import org.rut.util.algorithm.SortUtil; f4fBUZ^ A
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/** #R{>@]x`
* @author treeroot 3*&
Y'/!
* @since 2006-2-2 0:`|T jf_
* @version 1.0 >v %js!`f
*/ VJ=>2'I
public class ImprovedQuickSort implements SortUtil.Sort { Km;}xke6
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private static int MAX_STACK_SIZE=4096; +4.s4&f)
private static int THRESHOLD=10; #D4
/* (non-Javadoc) odSPl{. >d
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G0{Z@CvO'
*/ T#H^
}`
public void sort(int[] data) { !uQT4<g
int[] stack=new int[MAX_STACK_SIZE]; 1vxRhS&FY
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int top=-1; Lxwi"ndP
int pivot; |82q|@e
int pivotIndex,l,r; ly-(F2
W;'fAohr
stack[++top]=0; E?G'F3i
stack[++top]=data.length-1; {YgU23;q
iCPm7AU
while(top>0){ U\p`YZ
int j=stack[top--]; MzD1sWmK
int i=stack[top--]; a(|6)w-
Td'Mc-/
pivotIndex=(i+j)/2; RbX9PF"|+
pivot=data[pivotIndex]; )"S%'myj
l[Z o,4*
SortUtil.swap(data,pivotIndex,j); R(d<PlZ
*qwN9b/!
file://partition N#K)Z5J)b
l=i-1; cry1gnWG
r=j; &h0LWPl
do{ -;7xUNQ
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); "_q~S$i^
SortUtil.swap(data,l,r); F#gA2VCm
} l!f_ +lv
while(l SortUtil.swap(data,l,r); Qds<j{2
SortUtil.swap(data,l,j); rXi&8R[
"esuLQC
if((l-i)>THRESHOLD){ J5G<Y*q
stack[++top]=i; {+WBi(=W
stack[++top]=l-1; w6i2>nu_O
} pM?~AYWb
if((j-l)>THRESHOLD){ oI;ho6y)
stack[++top]=l+1; V
9Qt;]mQ
stack[++top]=j; E{<#h9=>
} t,?,T~#9
q<
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} (dq_,LI
file://new InsertSort().sort(data); =/Gd<qz3
insertSort(data); . vb##D
} -N*[f9EJB
/** B/wD~xC?x
* @param data
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*/ "pM>TMAE
private void insertSort(int[] data) { @."K"i'Bl
int temp; p6- //0qb
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); jA1S|gV
} xRWfZ3E#
} B&_:20^y~
} \^(#b,k#
}rJqMZ]w
} 6|EOB~|
BbX$R`f
归并排序: -9om,U`t
Tv|'6P
package org.rut.util.algorithm.support; MGF!ZZ\
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import org.rut.util.algorithm.SortUtil; lf(+]k30
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/** P'Y(f!%
* @author treeroot ^VYR}1Mw
* @since 2006-2-2 cIO/8D#zU
* @version 1.0 "Erphn
*/ NuO@Nr
public class MergeSort implements SortUtil.Sort{ DNmC
oc"p5Y3,Os
/* (non-Javadoc) Zna6-0o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~;HASHu
*/ Kh3i.gm7g
public void sort(int[] data) { {Vu=qNx
int[] temp=new int[data.length]; \;-Yz
mergeSort(data,temp,0,data.length-1); niS\0ZA
} YMw,C:a4
4m\Cc_:jO
private void mergeSort(int[] data,int[] temp,int l,int r){
@>z.chM;
int mid=(l+r)/2; F[coa5
if(l==r) return ; eYv^cbO@:
mergeSort(data,temp,l,mid); q,sO<1wAT\
mergeSort(data,temp,mid+1,r); D!* SA
for(int i=l;i<=r;i++){ CRo@+p10
temp=data; QO$18MBcc
} <@M5 C-hH
int i1=l; ^h_rE
|c
int i2=mid+1; KYTXf+ oh
for(int cur=l;cur<=r;cur++){ /[Nkk)8-
if(i1==mid+1) "I=Lbh-`
data[cur]=temp[i2++]; -d?<t}a
else if(i2>r) `&=%p|
data[cur]=temp[i1++]; D Z~036
else if(temp[i1] data[cur]=temp[i1++]; 9vi+[3s/=;
else _&HFKpHQ
data[cur]=temp[i2++]; vmgd
} s[4 qC
} F4=X(P_6
Ne9VRM
P
} c*owP
g#P]72TQ
改进后的归并排序: ."Pn[$'.
Ks3YrKk;p
package org.rut.util.algorithm.support; -wUT@a
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import org.rut.util.algorithm.SortUtil; *=md!^x`
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/** ~p+
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* @author treeroot ~&,S xQT
* @since 2006-2-2 oJV dFE
* @version 1.0 s|WcJV
*/ "wVisL2+.
public class ImprovedMergeSort implements SortUtil.Sort { >]B_+r0m^
a"cw%L
private static final int THRESHOLD = 10; VVF9X(^rQ
#x;d+Q@
/* jz3f{~
* (non-Javadoc) 2n"-~'3\
* XcbEh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Nt
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*/ #- L <
public void sort(int[] data) { UN<$F yb
int[] temp=new int[data.length]; p*jH5h cy
mergeSort(data,temp,0,data.length-1); {#=o4~u%;H
} ,A#gF_8
]'<}kJtN.
private void mergeSort(int[] data, int[] temp, int l, int r) { CT\rx>[J.6
int i, j, k; =g%<xCp
int mid = (l + r) / 2; x[&)\[t
if (l == r) \"I418T K
return; 1Uah IePf
if ((mid - l) >= THRESHOLD) K6F05h 5S
mergeSort(data, temp, l, mid); D3tcwjXoW_
else nBd(pOe
insertSort(data, l, mid - l + 1); B<|Vm.D
if ((r - mid) > THRESHOLD) ZP:+ '\&J
mergeSort(data, temp, mid + 1, r); X~*/ ~f
else >N0L
insertSort(data, mid + 1, r - mid); ?>R(;B|ER
f DXTedrG/
for (i = l; i <= mid; i++) { 1vh[sKv9%
temp = data; "-HWw?rx/
} jlyuu
for (j = 1; j <= r - mid; j++) { u3cl7~- yW
temp[r - j + 1] = data[j + mid]; uowdzJ7
} x=W5e
^0?
int a = temp[l]; 1Si$Q
int b = temp[r]; ;+3@S`2r
for (i = l, j = r, k = l; k <= r; k++) { /*6[Itm_h
if (a < b) { L8pKVr
data[k] = temp[i++]; ASSe;+yp
a = temp; X=jD^"-
} else { ;wHyX)&X$
data[k] = temp[j--]; ey:%Zy
[~
b = temp[j]; ##"
Hui
} h5n@SE>G
} 8NWuhRRrw
} .8|"@
qP9`p4c8i
/** b$/7rVH!
* @param data y?iW^>|?L=
* @param l !@h)3f]`1G
* @param i q:wz!~(>
*/ (AG((eV
private void insertSort(int[] data, int start, int len) { &jrc]
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 7a4Z~r27/
} 8qUNh#
} D4{<~/oBv
} LmKY$~5P
} 2H1?f|0>
B;<zA' 1
堆排序: a 4?c~bs
UD&pL'{s
package org.rut.util.algorithm.support; ;6=*E '
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import org.rut.util.algorithm.SortUtil; 5^{2g^jH6
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/** .;dI&0Z
* @author treeroot /i"1e:cK
* @since 2006-2-2 1_mqPMm
* @version 1.0 8%Ak
*/ )'/xNR
public class HeapSort implements SortUtil.Sort{ (Kw%fJT
{P ==6/<2o
/* (non-Javadoc) 2\"T&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =Nz;R2{@
*/ S:cd'68D
public void sort(int[] data) { V|2[>\Cv
MaxHeap h=new MaxHeap(); (ul_bA+
h.init(data); 0<Rq
for(int i=0;i h.remove(); #,SPV&
System.arraycopy(h.queue,1,data,0,data.length); ka$la;e3
} 1/=6s5vS}
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0
private static class MaxHeap{ @f#6Nu
k4JTc2b
void init(int[] data){ ^HWa owy=
this.queue=new int[data.length+1]; .p78
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for(int i=0;i queue[++size]=data; Hr(%y&0
fixUp(size); Dyj>dh-
} +@+*sVb
} );xTl6Y9
AZ.
j>+0xx
private int size=0; F{eI[A
VP }To
private int[] queue; A ?[Wfq|
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public int get() { LKM;T-
return queue[1]; K*tomy
} xE6hE'rh.O
p%+'iDb
public void remove() { T?*f}J
SortUtil.swap(queue,1,size--); 5~RR
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fixDown(1); gAK"ShOhG=
} fjqd16{Q
file://fixdown O]?PC^GGY
private void fixDown(int k) { XrGP]k6.^
int j; 2zkOs:
while ((j = k << 1) <= size) { \|
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if (j < size %26amp;%26amp; queue[j] j++; D0X!j,Kc
if (queue[k]>queue[j]) file://不用交换 cJ'OqV F
break; )D7/[zb^
SortUtil.swap(queue,j,k); @lCyH(c%
k = j; %vRCs]
} 9bUFxSH
} +6(\7?
private void fixUp(int k) { 4mm>6w8NT
while (k > 1) { ufocj1IU
int j = k >> 1; 4V'HPD>=V
if (queue[j]>queue[k]) be
HEAQ
break; Z)<lPg!YAR
SortUtil.swap(queue,j,k); &[5pR60
k = j; O&@CT] )8
} ,3Aiz|v-
} scy_
CWSc #E
} UYhxgPGsj
B|r'
} -7VQ{nC
2CV? cm
SortUtil: ^MvBW6#1
e_IRF+>
package org.rut.util.algorithm; ZQ_AqzT3D
mpd?F'V
import org.rut.util.algorithm.support.BubbleSort; /1b7f'
import org.rut.util.algorithm.support.HeapSort; 2u(G:cR
import org.rut.util.algorithm.support.ImprovedMergeSort; gvFCsVv<{
import org.rut.util.algorithm.support.ImprovedQuickSort; 7Q?^wx
import org.rut.util.algorithm.support.InsertSort; Yb%#\.M/y
import org.rut.util.algorithm.support.MergeSort; vU9:`@beu
import org.rut.util.algorithm.support.QuickSort; L fZF
import org.rut.util.algorithm.support.SelectionSort; ;]W@W1)$
import org.rut.util.algorithm.support.ShellSort; /])P{"v$^
]&X}C{v)G
/** mTL JajE/
* @author treeroot ]$I}r=
Em
* @since 2006-2-2 ur[^/lxx0
* @version 1.0 kG`&Z9P
*/ L.: 8qY
public class SortUtil { ipS:)4QFxJ
public final static int INSERT = 1; -[[(Zx
public final static int BUBBLE = 2; zxeT{AFPr?
public final static int SELECTION = 3; m"wP]OQH*+
public final static int SHELL = 4; ^p3W}D
public final static int QUICK = 5; ]#vi/6\J
public final static int IMPROVED_QUICK = 6; sEi9<$~R@0
public final static int MERGE = 7; b8glZb*$
public final static int IMPROVED_MERGE = 8; gKtgW&PYm
public final static int HEAP = 9; =X7_!vSv
$ByP 9=|
public static void sort(int[] data) { a`>H69(bU
sort(data, IMPROVED_QUICK); "6Z(0 iu:{
} I8uFMP
private static String[] name={ kq@~QI?9
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" /dHIm`. Z
}; }
g%v<'K
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private static Sort[] impl=new Sort[]{ TQ=HFs
~
new InsertSort(), 0B:
v0R
new BubbleSort(), KtHkLYOCG
new SelectionSort(), ]`M2Kwp
new ShellSort(), ygQe'S{!S\
new QuickSort(), ;RYIc0%
new ImprovedQuickSort(), DKF
'*
new MergeSort(), 5<YL^m{/L
new ImprovedMergeSort(), tTWEhHQ`
new HeapSort() 'UM *7
}; "<LWz&e^^
Zpz3?VM(
public static String toString(int algorithm){ ilAhw4A
return name[algorithm-1]; d0;?GQYn:
} V)P8w#,
>T-4!ZvS\j
public static void sort(int[] data, int algorithm) { =nqHVRA
impl[algorithm-1].sort(data); uaZHM@D
} 5]n\E?V'L
[v`kqL~
public static interface Sort { :aH5=@[!y
public void sort(int[] data); ?$l|];m)-
} tHK>w%|\R
"F[7b!>R
public static void swap(int[] data, int i, int j) { _<=h#lH
int temp = data; lnRL^ }
data = data[j]; Sb(OG 6
data[j] = temp; h}kJ,n
} -gUp/#l1
} %Aqf=R_^