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。 j_Yp>=+[
插入排序: 720D V+o
R?]02Q
package org.rut.util.algorithm.support; `]%|f
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import org.rut.util.algorithm.SortUtil; wiiCd
/** ti#7(^j
* @author treeroot -\C!I
* @since 2006-2-2 i-6Z"b{
* @version 1.0 ~c\e'≻
*/ Qjb:WC7he
public class InsertSort implements SortUtil.Sort{ .0es3Rj
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/* (non-Javadoc) #'y#"cmQ.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4ecP*g
*/ NX}<*b/
public void sort(int[] data) { R6(oZph
int temp; 9g<7i
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =zz~kon9
} #"B\UN
} :8OZ#D_Hl
} M]J^N#
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} Ftr5k^!
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冒泡排序: V;v8=1t!
ml+; Rmvb
package org.rut.util.algorithm.support; #)nSr
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import org.rut.util.algorithm.SortUtil; s=;uc]9g
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/** n^g|Ja
* @author treeroot ynQ: >tw
* @since 2006-2-2 P09;ng67
* @version 1.0 B\XKw'
*/ x U4 +|d
public class BubbleSort implements SortUtil.Sort{ z*!%g[3I
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/* (non-Javadoc) *+#8mA(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,=[?yJy
*/ ax<?GjpM
public void sort(int[] data) { LA}Syt\F
int temp; 9@Jtaq>jf
for(int i=0;i for(int j=data.length-1;j>i;j--){ |EJD3&
if(data[j] SortUtil.swap(data,j,j-1); BW$"`T@c6~
} \hx1o\
} &__es{;P
} ^y<<>Y'I
} xjKR R?
GU( _
} sG92XJ
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选择排序: TOB]IrW
G6$kv2(k`@
package org.rut.util.algorithm.support; ;5659!;
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import org.rut.util.algorithm.SortUtil; gMzcTmbc8
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/** =\H!GT
* @author treeroot PoxK{Y
* @since 2006-2-2 ^rifRY-,yO
* @version 1.0 !:q/Ye3.
*/ ,X`)ct
public class SelectionSort implements SortUtil.Sort { sTn<#l6
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/* e,W%uH>X
* (non-Javadoc) hpO`]
* [PNT\ElT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~f$|HP}
*/ SAy=WV
public void sort(int[] data) { e&&53?
int temp; I|^;B8[
for (int i = 0; i < data.length; i++) { B><d9d
int lowIndex = i; iKX-myCz
for (int j = data.length - 1; j > i; j--) { wk5s)%V
if (data[j] < data[lowIndex]) { ^hZ0IM
lowIndex = j; W04@!_) <
} ahJ`$U4n
} n>BkTaI
SortUtil.swap(data,i,lowIndex); Uq^#r iq
} zh8nc%X{
} [YlKR'_
[XEkz#{
} onz?_SAW
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Shell排序: y1dDO2mA
n*[XR`r}
package org.rut.util.algorithm.support; wn/_}]T
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import org.rut.util.algorithm.SortUtil; >\KNM@'KI
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/** UQ?XqgUM
* @author treeroot 5Co
* @since 2006-2-2 F8jd'OR
* @version 1.0 -p]1=@A<}
*/ I|gB@|_~
public class ShellSort implements SortUtil.Sort{ &$`P,i 1)
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/* (non-Javadoc) vq(0OPj8r[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aX)I3^ar
*/ ,JAx
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public void sort(int[] data) { M2OIBH4!
for(int i=data.length/2;i>2;i/=2){ _>(^tCo
for(int j=0;j insertSort(data,j,i); <>y;.@}Q
} itBwCIj G
} ON=@O
insertSort(data,0,1); (^TF%(H
} 5:Z0Pt
g
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/** 1OCeN%4]Qk
* @param data I>]oS(GNT
* @param j [>8}J"
* @param i k/#&qC>]
*/ l;R%= P?'F
private void insertSort(int[] data, int start, int inc) { Z}mLLf E
int temp; #U!
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for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ObVGV
} CZud&
<
} \2N!:%k
} Ql/cN%^j$
v$7QIl_/7
} ,?8qpEG~#+
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快速排序: 7K,-01-:
_x%7@.TB
package org.rut.util.algorithm.support; y{ibO}s
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import org.rut.util.algorithm.SortUtil; [$0p+1
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/** -JMdE_h
* @author treeroot {XR6>]
* @since 2006-2-2 qE&v ;
* @version 1.0 YVQN&|-
*/ PRu 6xsyA
public class QuickSort implements SortUtil.Sort{ *scVJ
JD)(oK%C
/* (non-Javadoc) '\Giv!>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {> eXR?s/
*/ mn, =i
public void sort(int[] data) { 0b+Wc43}K
quickSort(data,0,data.length-1); Jj!vh{
} (G zb
private void quickSort(int[] data,int i,int j){ "6MVvpy"
int pivotIndex=(i+j)/2; "& ])lz[u
file://swap CR8/Ke
SortUtil.swap(data,pivotIndex,j); 1"zDin!A
MLw7}[
int k=partition(data,i-1,j,data[j]); 0
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SortUtil.swap(data,k,j); sGyeb5c
if((k-i)>1) quickSort(data,i,k-1); b LlKe50
if((j-k)>1) quickSort(data,k+1,j); G_;)a]v8)
2`7==?
} GPkmf%FJ
/** PDJr<E?
* @param data E7t+E)=8
* @param i 7!@-*/|!S9
* @param j QLXN*c
* @return 4 !i$4
*/ HG^B#yX
private int partition(int[] data, int l, int r,int pivot) { .{ocV#{s
do{ jF ^~p9z
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); kpJ@M%46
SortUtil.swap(data,l,r); UtPLI al
} F_w
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while(l SortUtil.swap(data,l,r); x2OaPlG,&V
return l; N4^-`
} \|H!~) h$1
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} E@@5BEB ~
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改进后的快速排序: ',Y.v"']4
'8Q]C*Z
package org.rut.util.algorithm.support; xbdN0MAU
^T*? >%`
import org.rut.util.algorithm.SortUtil; ![`Ay4AZ@a
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/** rSZd!OQ
* @author treeroot Eo{"9j\
* @since 2006-2-2 3.|S
* @version 1.0 .<jr0,i
*/ }Mst jm
public class ImprovedQuickSort implements SortUtil.Sort { }#L^! \V}
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private static int MAX_STACK_SIZE=4096; iP
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private static int THRESHOLD=10; d74d/l1*{
/* (non-Javadoc) 8$")%_1]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9!6f-K
*/ j/R[<47
public void sort(int[] data) { zz+$=(T:M
int[] stack=new int[MAX_STACK_SIZE]; KC/=TSSXd.
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int top=-1; r[2ILe
int pivot; {_7i8c<s=
int pivotIndex,l,r; ?3nR
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stack[++top]=0; -8; 7Sp1
stack[++top]=data.length-1; bSiYHRH.e
K~c=M",mW
while(top>0){ O{QA
int j=stack[top--]; }=%oX}[
int i=stack[top--]; Wr<j!>J6Ki
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pivotIndex=(i+j)/2; #yI
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pivot=data[pivotIndex]; k9k XyX[
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SortUtil.swap(data,pivotIndex,j); SG6kud\b
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file://partition 2Z-ljD&
l=i-1; !Y$h"<M
r=j; LgKaPg$
do{ _Tf4WFu2
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); /M|262%
SortUtil.swap(data,l,r); UYk/v]ZA
} K?[q%W]%
while(l SortUtil.swap(data,l,r); /35R u}c
SortUtil.swap(data,l,j); 4i6q{BeHn
G}:w@}h/
if((l-i)>THRESHOLD){ p~SClaR3H
stack[++top]=i; wfNk=)^$
stack[++top]=l-1; RP~|PtLw_
} tmv&U;0Z
if((j-l)>THRESHOLD){ (pY 7J
stack[++top]=l+1; @Fluc,Il
stack[++top]=j; +
,%&e
} B|R@5mjm
=T-&j60
} |uX,5Q#6
file://new InsertSort().sort(data); !j:9`XD|
insertSort(data); FoNSM$x
} 2/?`J
/** mR&H9NG
* @param data *C5R}9O5
*/ ;1:Js0=;H
private void insertSort(int[] data) { <D:.(AUeO
int temp; ,VCyG:dw
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); W{5#@_pL
} 3?c3<`TW
} 5k`l$mW{
} %6t2ohO"
)Hpa}FGT
} Z)! qW?
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归并排序: xC{qV,
uehDIl0\[b
package org.rut.util.algorithm.support; ,5|&A
**$LR<L
import org.rut.util.algorithm.SortUtil; Gcdd3W`O
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/** 6HZ` .o:f
* @author treeroot *G{^|z
* @since 2006-2-2 8kU!8^mH
* @version 1.0 C"!gZ8*\!9
*/ M@`;JjtSA
public class MergeSort implements SortUtil.Sort{ pk^K:Xs}
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/* (non-Javadoc) T?x[C4wf+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8dO!
*/ &7`^i.fh)
public void sort(int[] data) { YpH&<$x:
int[] temp=new int[data.length]; S'4(0j
mergeSort(data,temp,0,data.length-1); A Y*e@nk\
} UaWl6 Y&Vu
XiL~TCkx4
private void mergeSort(int[] data,int[] temp,int l,int r){ |2RC# ]/-Y
int mid=(l+r)/2; j7jCm:
if(l==r) return ; ;%<,IdhN
mergeSort(data,temp,l,mid); 6kNrYom
mergeSort(data,temp,mid+1,r); =<{np
for(int i=l;i<=r;i++){ )+[ gd/<C.
temp=data; P0W*C6&71|
} iH/6M
int i1=l; jzDuE{
int i2=mid+1; d Vj_8>
for(int cur=l;cur<=r;cur++){ ;nodjbr,j
if(i1==mid+1) tKuVQH~D
data[cur]=temp[i2++]; ToJ$A`_!`
else if(i2>r) z.kvX+7'
data[cur]=temp[i1++]; (BTVD,G
else if(temp[i1] data[cur]=temp[i1++]; Y&S24aql
else #:[t^}
data[cur]=temp[i2++]; [<%H>S1
} bmfI~8
} '
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} v hpNpgz
Kla'lCZ
改进后的归并排序: VHCK2}ps
~io szX
package org.rut.util.algorithm.support; |C!ox hu<
^G4Py<s
import org.rut.util.algorithm.SortUtil; .!f$
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/** MUTj-1 H6)
* @author treeroot iPd[l{85Z
* @since 2006-2-2 BQ=PW|[
* @version 1.0 g;2?F[8Th
*/ *M:B\D
public class ImprovedMergeSort implements SortUtil.Sort { n/Sw P
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P* lQRA
private static final int THRESHOLD = 10; %kS(LlL+6
)(ImLbM)
/* 6^eV"&+@
* (non-Javadoc) 77\]B
* I aGq]z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LIcM3_.
*/ [R=yF ~-
public void sort(int[] data) { 3~uW I%I`
int[] temp=new int[data.length]; GT0Of~?f
mergeSort(data,temp,0,data.length-1); ldiD2
Q
} Fs9I7~L3
syaPpM
Q-
private void mergeSort(int[] data, int[] temp, int l, int r) { nm6h%}xND<
int i, j, k; ~]nSSD)\
int mid = (l + r) / 2; f"%{%M$K
if (l == r) +y&Tf#.V/A
return; ]ooIrY8
if ((mid - l) >= THRESHOLD) )}"wesNo".
mergeSort(data, temp, l, mid); nQ5n-A&["
else R)QC)U
insertSort(data, l, mid - l + 1); .(^ ,z&
if ((r - mid) > THRESHOLD) f33 l$pOp
mergeSort(data, temp, mid + 1, r); ] lrWgm
else ] Hzt b
insertSort(data, mid + 1, r - mid); 2/"u5
IIn"=g=9
for (i = l; i <= mid; i++) { G/7cK\^u
temp = data; IOqwCD[
} xx#zN0I>-y
for (j = 1; j <= r - mid; j++) { `< xn8h9p
temp[r - j + 1] = data[j + mid]; "|q qUKJZ
} orWbU
UC
int a = temp[l]; ;[M}MFc/`
int b = temp[r]; 7Rd'm'l)
for (i = l, j = r, k = l; k <= r; k++) { {bJ`~b9e
if (a < b) { 4nh>'v%pD
data[k] = temp[i++]; W g02 A\
a = temp; OmIg<v0\;
} else { ;c4gv,q@
data[k] = temp[j--]; *Zt#U#
b = temp[j]; uVJDne,R
}
TU:7Df
} FVaQEMZ^
} P:k>aHnW
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/** C|}iCB
* @param data -"=U?>(
* @param l `f*Q$Ulqx
* @param i #a'Ex=%rM
*/ mi,E-
private void insertSort(int[] data, int start, int len) { P<M?Qd1.
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); $W!!wN=B
} kBD>-5Sn_T
} ihIVUu-M
} \=:~ki=@B
} )qo {c1X
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堆排序: __|+w<]
.QZaGw=,z
package org.rut.util.algorithm.support; _qw?@478
#xX5,r0
import org.rut.util.algorithm.SortUtil; B0dQ@Hq*
hc>HQrd
/** <{V(.=11
* @author treeroot Mxyb5h
* @since 2006-2-2 glM$R &/
* @version 1.0 7UVzp v
*/ SYCEQ5
-
public class HeapSort implements SortUtil.Sort{ _B/dWA,P
>z%&xgOa
/* (non-Javadoc) f!I[>&n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) psg)*'r
*/ >8WP0Qx/
public void sort(int[] data) { ST:A<Da"
MaxHeap h=new MaxHeap(); IC1NKn<k
h.init(data); @~!wDDS
for(int i=0;i h.remove(); 8FKXSqhVM
System.arraycopy(h.queue,1,data,0,data.length); 5=v}W:^v.
} RS)tO0
$~VRza 8Q
private static class MaxHeap{ K
1 a\b"
lij.N)E
void init(int[] data){ 5ni~Q 9b
this.queue=new int[data.length+1]; T
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for(int i=0;i queue[++size]=data; b{L/4bu
fixUp(size); r:f[mk"-"A
} S-
pV_Ff
} K/i*w<aPb7
`6lr4Kk @R
private int size=0; V^3L3|k
r'^Hg/Jzt
private int[] queue; G,o6292hj
E"qRw_
~t
public int get() { &cxRD
return queue[1]; QPx_-
} Pv_Jm
9N@W\DT
public void remove() { ,z;cbsV-{
SortUtil.swap(queue,1,size--); &O9 |#YUq
fixDown(1); H`1{_
} W+UfGk}A
file://fixdown 0ZZZoPo
private void fixDown(int k) { %E#s\B,w
int j; _ba>19csq%
while ((j = k << 1) <= size) { LhOa{1SY
if (j < size %26amp;%26amp; queue[j] j++; M+U9R@
if (queue[k]>queue[j]) file://不用交换 [@J/eWB
break; X-6de>=
SortUtil.swap(queue,j,k); $c0h.t
k = j; e+~\+:[?
} '*5i)^
} xF;kTBRi
private void fixUp(int k) { gp>3I!bo[K
while (k > 1) { C-Q28lD}f
int j = k >> 1; , w{e
if (queue[j]>queue[k]) _I@9HC 4
break; (gP)%
SortUtil.swap(queue,j,k); c~z82iXNO
k = j; OGK}EI
} llcb~
} NW]Lj>0Y
AL9chYP}/
} )c8rz[i
s}w{:Hk,x8
} 1S{D6#bE
oI
}VV6vO
SortUtil: T|nDTezr
"I3@m%qv
package org.rut.util.algorithm; OLyf8&AU@
rDm~h~u5
import org.rut.util.algorithm.support.BubbleSort; 3{'Ne}5%I
import org.rut.util.algorithm.support.HeapSort; X{5vXT\/y
import org.rut.util.algorithm.support.ImprovedMergeSort; '(U-(wTC'/
import org.rut.util.algorithm.support.ImprovedQuickSort; |iak z|])
import org.rut.util.algorithm.support.InsertSort; Ag 9vU7
import org.rut.util.algorithm.support.MergeSort; 7j@Hs[
*
import org.rut.util.algorithm.support.QuickSort; t|g4m[kr
import org.rut.util.algorithm.support.SelectionSort; f(/lLgI(
import org.rut.util.algorithm.support.ShellSort; 6 Q%jA7
8IlunJ
/** Gr*r=s
* @author treeroot 6wBx;y
|
* @since 2006-2-2 BmbyH{4
* @version 1.0 cqQ#p2<%
*/ o_XflzC
public class SortUtil { .c8g:WB<
public final static int INSERT = 1; k.uH~S _
public final static int BUBBLE = 2; SF7\<'4\N
public final static int SELECTION = 3; 3O,+=?VK
public final static int SHELL = 4; my(2;IJ#{
public final static int QUICK = 5; Ro\8ZXUQa
public final static int IMPROVED_QUICK = 6; {m4b(t`xw
public final static int MERGE = 7; |]jb& M
public final static int IMPROVED_MERGE = 8; ZInpMp
public final static int HEAP = 9; cS5Pl
,]|#[ 8
public static void sort(int[] data) { j'Gt&\4
sort(data, IMPROVED_QUICK); |,S+@"0#
} a!a-b~#cx
private static String[] name={ T-.%
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Bal$+S
}; GzhYY"iif#
kjIAep0rT
private static Sort[] impl=new Sort[]{ ^yW L,$
new InsertSort(), r(:5kC8K
new BubbleSort(), wo4;n9@I
new SelectionSort(), A
9( x
new ShellSort(), 3x`|
new QuickSort(), "un]Gc
new ImprovedQuickSort(), umjt]Gu[
new MergeSort(), }q_<_lQ
new ImprovedMergeSort(), ]] !VK
new HeapSort() ). <-X^@
}; qraSRK5
gH$ Mr
public static String toString(int algorithm){ _GV:HOBi
return name[algorithm-1]; zNs55e.rx
} xcd#&
S=MEG+Ad
public static void sort(int[] data, int algorithm) { ?:vv50
impl[algorithm-1].sort(data); RiDJ> 6S
} .CL[_;}
QA<
Rhv,
public static interface Sort { Z/W:97M
public void sort(int[] data); x3hB5p$q
} .!Oo|m`V@
nL5cK:
public static void swap(int[] data, int i, int j) {
CuFSeRe
int temp = data; U bXh,QEG*
data = data[j]; {&cJDqz5=
data[j] = temp; pV9IHs}
} &q3"g*q
} FEW14U'O