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。 b5!\"v4c
插入排序: bx!uHL=
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package org.rut.util.algorithm.support; u_kcuN\Sq
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import org.rut.util.algorithm.SortUtil; kXjrc
/** }s*H|z
* @author treeroot VSm[80iR0
* @since 2006-2-2 01N]|F:
* @version 1.0 $? 'JePC
*/ '*4>&V.yX
public class InsertSort implements SortUtil.Sort{ Iw07P2
@B.;V=8wJ
/* (non-Javadoc) D8S?xK 7[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @.rVg XE=!
*/ ^oZz,q
public void sort(int[] data) { ~*R:UTBtw
int temp; s,5SWdb\v
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); (~59}lu~
} :S['hBMN
} ioIOyj
} Drn{ucIs
7!-3jU@m
} kzky{0yKk=
Fe: M'.
冒泡排序: 2X];zY
2/*F}w/
package org.rut.util.algorithm.support; |6qxRWT"
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JPpF`
import org.rut.util.algorithm.SortUtil; o0yyP,?yh
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/** 7z.(pg=
* @author treeroot O~p@87aq
* @since 2006-2-2 Z.Otci> J
* @version 1.0 {c
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*/ C]X:@^Hy
public class BubbleSort implements SortUtil.Sort{ "7w~0?}
.,-,@ZK
/* (non-Javadoc) ;q=0NtCS=4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^[UWG^d
*/ $q"/q*ys
public void sort(int[] data) { "ITC P<+
int temp; AD$$S.zoD<
for(int i=0;i for(int j=data.length-1;j>i;j--){ |3Fo4K%+
if(data[j] SortUtil.swap(data,j,j-1); 0n FEPMO
} VXE85
} \vH /bL
} qcNu9Ih
} Ou26QoT9XI
Gky
e
} &1=Je$,
k!&G; 6O-
选择排序: |igr3p5Fw
Z$UPLg3=;_
package org.rut.util.algorithm.support; bCV3h3<
TO(2n8'fdO
import org.rut.util.algorithm.SortUtil; ZsgJ6
Y
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/** S1Z~-i*w
* @author treeroot %i!=.7o.
* @since 2006-2-2 .Lwp`{F/
* @version 1.0 . J/x@
*/ |JUb 1|gi
public class SelectionSort implements SortUtil.Sort { :Dh\
j{U#g8
/* LnwI 7uvq
* (non-Javadoc) :,<G6"i
* sIM^e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &Zxo\[lP
*/ |b
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public void sort(int[] data) { 4qd =]i
int temp; )td?t.4
for (int i = 0; i < data.length; i++) { |UudP?E
int lowIndex = i; $0kuR!U.N
for (int j = data.length - 1; j > i; j--) { qdM=}lbc
if (data[j] < data[lowIndex]) { 5s5GBJ?
lowIndex = j; 5l(8{,NDt
} X0QY:?
} !!{!T;)l
SortUtil.swap(data,i,lowIndex); _f"HUKGN
} /~8<;N>,+
} %^`b)
QNN*/n
} n+sV$*wvS
wqB 5KxO
Shell排序: v$WH#;(\
P"Scs$NOU?
package org.rut.util.algorithm.support; TO,XN\{y
~PTqR2x
import org.rut.util.algorithm.SortUtil; gv6}GE
Zb \E!>V
/** vU4Gw4
* @author treeroot 0mb|JoE(
* @since 2006-2-2 zL^`r)H
* @version 1.0 Ky r3)1#J
*/ ~BUzyc%
public class ShellSort implements SortUtil.Sort{ 6~oo.6bA
W[$GB_A)
/* (non-Javadoc) =DL
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :
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*/ =7e|e6
public void sort(int[] data) { q7z;b A
for(int i=data.length/2;i>2;i/=2){ .wdWs tQ
for(int j=0;j insertSort(data,j,i); !nm[ZrSP
} I^u$H&
} !,SGKLs.m
insertSort(data,0,1); Q;V*M
} Fm{/&U^
71RG1,
/** Y:x,pPyl
* @param data X\=m
* @param j ]-rhc.Gk@1
* @param i ym]12PAU5
*/ EMTAl;P
private void insertSort(int[] data, int start, int inc) { MV(Sb:RZ
int temp; fwN'5ep
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); XEUy,>mR
} S-5|t]LV
} $ ]fautQlt
} F0D7+-9[
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} ?<*mIf:?
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快速排序: hja;d1yH
kPuI'EPK
package org.rut.util.algorithm.support; LH@xr\^
Z$X[x7e.
import org.rut.util.algorithm.SortUtil; x;w^&<hQ\
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/** ,Ky-3p>
* @author treeroot f%g^6[
* @since 2006-2-2 =V[ey
* @version 1.0 2 &(w\#'
*/ 8V08>M
public class QuickSort implements SortUtil.Sort{ }C'H@:/
nt5x[xa
/* (non-Javadoc) m|CB')
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Qf'%".*=~8
*/ <=yqV]JR
public void sort(int[] data) { &az
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quickSort(data,0,data.length-1); t_+Xt$Q7C
} ='\Di '*
private void quickSort(int[] data,int i,int j){ +L]$M)*0&
int pivotIndex=(i+j)/2; TV['"'D&i
file://swap cu@i;Hb@
SortUtil.swap(data,pivotIndex,j); b3vPGR
fOHgz,x=
int k=partition(data,i-1,j,data[j]); )-u0n],
SortUtil.swap(data,k,j); `pTCK9
if((k-i)>1) quickSort(data,i,k-1); gZg5On
if((j-k)>1) quickSort(data,k+1,j); iC.k8r+~
'g@Yra&09
} @[=K`n:n_
/** (b*PDhl`+
* @param data ,$,c<M
* @param i KJs/4oR;
* @param j `w;8xD(
* @return fPA5]a9
*/ 2VZdtz
private int partition(int[] data, int l, int r,int pivot) { 8M~^/Zc
do{ }~akVh`3
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); -".q=$f
SortUtil.swap(data,l,r); VJf|r#2
} Uc[@]
while(l SortUtil.swap(data,l,r); !EuqJjh
return l; 8NUVHcB6
} d41DcgG'j(
f~rq)2V:
}
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2C&G'@>
改进后的快速排序: q!y6K*
:|5\XV)>
package org.rut.util.algorithm.support; Rn4Bl8z'>
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import org.rut.util.algorithm.SortUtil; J?1U'/Wx2
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/** p!_3j^"{
* @author treeroot C-:lM1
* @since 2006-2-2 h;lg^zlTb
* @version 1.0 +%'!+r
l
*/ c?/R=/H
public class ImprovedQuickSort implements SortUtil.Sort { |n/qJIE6
!%lcn
O
private static int MAX_STACK_SIZE=4096; pVa9g)+z}
private static int THRESHOLD=10; ,SQ`, C
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/* (non-Javadoc) "gQ-{ W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]E:K8E
*/ }iE!(
l
public void sort(int[] data) { w{$X
:Z
int[] stack=new int[MAX_STACK_SIZE]; ';>A=m9(4%
Bokpvd-c7
int top=-1; ?B5934X
int pivot; <j<V{Wc
int pivotIndex,l,r; gAPD
y/wM
H[M(t^GM
stack[++top]=0;
#sRkKl|
stack[++top]=data.length-1; |RS(QU<QE
\Aa{]t
while(top>0){ OBm#E}
int j=stack[top--]; L#>^R
int i=stack[top--]; 4]P5k6nV
ToXgl4:kd
pivotIndex=(i+j)/2; !VoAN5#;
pivot=data[pivotIndex]; R2`-*PZ_
#=81`u
SortUtil.swap(data,pivotIndex,j); ]aDU* tk
?\.DG`Zxc
file://partition D00v"yp%%
l=i-1; K
K_
r=j; %0MvCm
do{ oj'a%mx
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); =mQdM]A)2
SortUtil.swap(data,l,r); )%6h9xyXt
} 1!P\x=Nn_
while(l SortUtil.swap(data,l,r); 7/># yR
SortUtil.swap(data,l,j); GX\6J]x=^2
jY|fP!?[
if((l-i)>THRESHOLD){ m5'nqy F
stack[++top]=i; .I#ss66h
stack[++top]=l-1; m(0c|-
} +~{Honj[
if((j-l)>THRESHOLD){ vWh]1G#'p[
stack[++top]=l+1; u6lcl}'
stack[++top]=j; 9!u&8#i
} gT&s &0_7
a^5.gfzA
} pG-9H3[f#
file://new InsertSort().sort(data); /T\'&s3D+
insertSort(data); J4l\
} vS1#ien#
/** ri?k}XnhX
* @param data H~ `JAplr
*/ ^lP;JT?
private void insertSort(int[] data) { +f"q^R IU
int temp; xro%AM
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }1}L&M@
} iU1yJ=
} /9o
gg
} hziPHuK9,
vvwQ/iJO4Q
} \\d!z-NOk?
"+sl(A3`U
归并排序: A(84cmq!q
`ttqgv\
package org.rut.util.algorithm.support; {Yc#XP
QMQ\y8E
import org.rut.util.algorithm.SortUtil; ^NB\[ &
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/** - xE%`X
* @author treeroot 7mBH#Q)
* @since 2006-2-2 g=)OcTd#
* @version 1.0 ZT
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*/ b uOpHQn
public class MergeSort implements SortUtil.Sort{ *Ud=x^JxO
Ucqn3&
/* (non-Javadoc) dVKctt'C
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tE(_Cg
*/ sgfci{~
public void sort(int[] data) { 9h/JW_
int[] temp=new int[data.length]; 30fqD1_{
mergeSort(data,temp,0,data.length-1); Bid+,,
} F[5sFkM7
:v
Do{My^1
private void mergeSort(int[] data,int[] temp,int l,int r){ dc=}c/6x
int mid=(l+r)/2; x;@wtd*QB
if(l==r) return ; !l|fzS8g
mergeSort(data,temp,l,mid); 0=erf62=
mergeSort(data,temp,mid+1,r); A8T75?lL(
for(int i=l;i<=r;i++){ MY w3+B+Jj
temp=data; +zL|j/q ?
} duq(K9S
int i1=l; |)[I$]L
int i2=mid+1; S(ky:
for(int cur=l;cur<=r;cur++){ kb~;s-$O`s
if(i1==mid+1) >[r ,X$]
data[cur]=temp[i2++]; n1
else if(i2>r) Usl963A#'F
data[cur]=temp[i1++]; CwdeW.A"j
else if(temp[i1] data[cur]=temp[i1++]; h#~\-j9>
else Qk[YF
data[cur]=temp[i2++]; 08MY=PC~R
} (,XbxDfM
} VBq|j"o0"
g5@P
} ={G0p=~+,p
e$l*s/"0t
改进后的归并排序: 8$~^-_>n/
&G$K.q
package org.rut.util.algorithm.support; Wo2W/{
@aC9O9|~
import org.rut.util.algorithm.SortUtil; |E?,hTRe5
ZGsI\3S
/** y"T(Unvc
* @author treeroot KJYcP72P
* @since 2006-2-2 HaA2y
* @version 1.0 t$EL3U/(
*/ +aZcA#%
public class ImprovedMergeSort implements SortUtil.Sort { p?V@P6h
W!o|0u!D
private static final int THRESHOLD = 10; 3k# h!Z
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/* Msst:}QY
* (non-Javadoc) ]S+KH
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* Y_=
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *b,4qMr
*/ h1Nd1h@-
public void sort(int[] data) { 60--6n
int[] temp=new int[data.length]; yN{TcX
mergeSort(data,temp,0,data.length-1); Csf!I@}Z
} _~.S~;o!b
]Ei*I}
private void mergeSort(int[] data, int[] temp, int l, int r) { m"f3hd4D_q
int i, j, k; 3,y zRb
int mid = (l + r) / 2; tRVz4fk[G
if (l == r) lnQY_~s
return;
IBYSI0
if ((mid - l) >= THRESHOLD) $nqVE{ksV
mergeSort(data, temp, l, mid); YLv5[pV
else VM}7 ~
insertSort(data, l, mid - l + 1); @
D.MpM}~
if ((r - mid) > THRESHOLD) L/xTW
mergeSort(data, temp, mid + 1, r); *X\J[$!
else :6jh*,OHZl
insertSort(data, mid + 1, r - mid); ,B1~6y\b
?bGk%jjHXM
for (i = l; i <= mid; i++) { h|%a}])G)
temp = data; zGtv(gwk
} !rTkH4!_
for (j = 1; j <= r - mid; j++) { })umg8s
temp[r - j + 1] = data[j + mid]; ]{ir^[A6
} Cs'<;|r(
int a = temp[l]; vw6DHN)k
int b = temp[r]; \rM5@
Vf
for (i = l, j = r, k = l; k <= r; k++) { ows3%
if (a < b) { +}x\|O
data[k] = temp[i++]; O39f
a = temp; |ngv{g
} else { i\dd
data[k] = temp[j--]; ']U<R=5T$
b = temp[j]; yrG=2{I
} S*V!t=
} q,T4-
E
} DCKH^J
N(`XqeC*
/** Pos(`ys;
* @param data h9kwyhd"
* @param l \49s;\I]
* @param i "sYZ3
*/ 3QDz9KwCAw
private void insertSort(int[] data, int start, int len) { ?$.JgG%Z+g
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 6,~]2H'zq
} y' RQ_Gi
} >';UF;\5]Q
} 9`tSg!YOh
} |#ZMZmo{
[Om,Q<
堆排序: e=`=7H4P
^{a_:r"
package org.rut.util.algorithm.support; e.WKf,e"X
uxlrJ1~M
import org.rut.util.algorithm.SortUtil; v}TFM
{gb` %J
/** %5!K?,z%
* @author treeroot <72q^w
* @since 2006-2-2 NA+7ey6
* @version 1.0 yX.; x 0
*/ HcM/
public class HeapSort implements SortUtil.Sort{ 5'/ff=
Y)2#\ F
/* (non-Javadoc) (qzBy \\p
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '7
t:.88
*/ 2
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public void sort(int[] data) { q!{>Nlk
MaxHeap h=new MaxHeap(); nh+Hwj#(x
h.init(data); oSLm?Lu
for(int i=0;i h.remove(); uyvjo)T
System.arraycopy(h.queue,1,data,0,data.length); o(yyj'=(
} Id=V\'$o
0ax;Q[z2
private static class MaxHeap{ @H$Sv
PR7B
Cxm
void init(int[] data){ sh*/wM
this.queue=new int[data.length+1]; kS4YxtvB
for(int i=0;i queue[++size]=data; 40G'3HOp
fixUp(size); zEt!Pug
} W'6sY@0m
} F+!9T
aU*}.{<!
private int size=0; }/QtIY#I
Vwb_$Yi+]
private int[] queue; FuC\qF
xdh%mG:?
public int get() { \027>~u
{
return queue[1]; JCci*F#r
} MzH'<`;BP
MlR]+]
public void remove() { W;?e @}
SortUtil.swap(queue,1,size--); OZEbs 7
fixDown(1); intl?&wC
} xlH3t&i7
file://fixdown :!JQ<kV
private void fixDown(int k) { mbns%%GJU
int j; 3vdFO: j
while ((j = k << 1) <= size) { 4v`G/w
if (j < size %26amp;%26amp; queue[j] j++; CSY-{
if (queue[k]>queue[j]) file://不用交换 R6TT1Ka3c
break; 7^syu;DT9Y
SortUtil.swap(queue,j,k); t N4-<6
k = j; "R"{xOQl
} @w;$M]o1
} Oh%p1$H
private void fixUp(int k) { b!r%4Ah
while (k > 1) { qkqtPbQ 7
int j = k >> 1; c
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if (queue[j]>queue[k]) `g<0FQA
break; frc9
SortUtil.swap(queue,j,k); v3{%U1>}v
k = j; \VWgF)_
} \/b[V3<"
} F"1tPWn
N 1ydL
} gq@8Z
AWn
;*0nPhBw0>
} 2.vmZaKP
CY.4 >,
SortUtil: 1Vc~Sa
_mJhY0Oc
package org.rut.util.algorithm; 6s'n
r7'0
YRMe<upo
import org.rut.util.algorithm.support.BubbleSort; jib pZ)
import org.rut.util.algorithm.support.HeapSort; &xZSM,
import org.rut.util.algorithm.support.ImprovedMergeSort; `z$P,^g`
import org.rut.util.algorithm.support.ImprovedQuickSort; UyFC\vQ
import org.rut.util.algorithm.support.InsertSort; 4sW'pH
import org.rut.util.algorithm.support.MergeSort; u%lUi2P2E
import org.rut.util.algorithm.support.QuickSort; kP'm$+1or
import org.rut.util.algorithm.support.SelectionSort; p:W{c/tV
import org.rut.util.algorithm.support.ShellSort; 5nTcd@lX
":q+"*fy
/** *Ms&WYN-
* @author treeroot I;n<)
>
* @since 2006-2-2 5{#s<%b.
* @version 1.0 =iH9=}aBFC
*/ o1"N{Eu
public class SortUtil { ZH*h1?\X
public final static int INSERT = 1; 62MQ+H
public final static int BUBBLE = 2; ={f8s,m)P,
public final static int SELECTION = 3; |3 Iug
public final static int SHELL = 4; [4aw*M1z}.
public final static int QUICK = 5; ]0BX5Z'
public final static int IMPROVED_QUICK = 6; ooBBg@
public final static int MERGE = 7; S^D7}
public final static int IMPROVED_MERGE = 8; *?$M=tH
public final static int HEAP = 9; n`@dk_%yI
&SNH1b#>E
public static void sort(int[] data) { sT "q]
sort(data, IMPROVED_QUICK); i+pQ 7wx
} c&,q`_t
private static String[] name={ oz]&=>$1I
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" \
\Tz'>[\
}; D[}^G5
t&NpC;>v
private static Sort[] impl=new Sort[]{ UR9\g(
new InsertSort(), ,7k-LAA
new BubbleSort(), ALcPbr
new SelectionSort(), z"mpwmv5
new ShellSort(), Go^TTL
new QuickSort(), ><>%;HZ
new ImprovedQuickSort(), h&n1}W+
new MergeSort(), s~bi#U;dF
new ImprovedMergeSort(), ~I9o* cq
new HeapSort() "RM\<)IF
}; 7=5eLc^
T\(k=0RM
public static String toString(int algorithm){ ,I ][
return name[algorithm-1]; >]&Ow9-
} La3rX
k{=dV
public static void sort(int[] data, int algorithm) { +S[3HX7H
impl[algorithm-1].sort(data); Z[ &d2'
} 0w0{@\9
$zU%?[J
public static interface Sort { $d!Vx m
public void sort(int[] data); H5 &._
} co1aG,>"q
rZcSG(d`53
public static void swap(int[] data, int i, int j) { tbiM>qxB
int temp = data; mQR9Pn}H
data = data[j]; }S3 oX$
data[j] = temp; F#M(#!)Y"
} RgL>0s
} +
d 3