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。 {Aq2}sRl{
插入排序: 'KL!)}B$h
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package org.rut.util.algorithm.support; .$&_fUY
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import org.rut.util.algorithm.SortUtil; o}QtKf)W
/** Sy\ec{$+V]
* @author treeroot o&-c5X4
* @since 2006-2-2 =XAFW
* @version 1.0 Y243mq-
*/ L{)*evBL
public class InsertSort implements SortUtil.Sort{ R/5@*mv{
j\SvfZ0"
/* (non-Javadoc) \ct7~!qM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;F3#AO4(
*/ 2g'o5B\*
public void sort(int[] data) { Mzfuthq=@
int temp; )Pj8{.t4
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); x,LQA0
} zNg8Oq&
} 67,@*cK3?J
} GiF})e}
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} 0'{`"QD\IW
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冒泡排序: HDTdOG)
m{ya%F
package org.rut.util.algorithm.support; -_>g=a@&
!edgziuO
import org.rut.util.algorithm.SortUtil; DJm/:td
tG{?
/** x:Nd>Fb
* @author treeroot +.p$Yi`
* @since 2006-2-2 6BPZ2EQ
* @version 1.0 (ex^=fv
*/ GA8cA)]zOD
public class BubbleSort implements SortUtil.Sort{ Ul EP;
f%1Dn }6
/* (non-Javadoc) FyZ iiH4|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /G>reG,G
*/ j5cc"s
public void sort(int[] data) { [xVE0l*\
int temp; ;7F|g
for(int i=0;i for(int j=data.length-1;j>i;j--){ kOe~0xoT@u
if(data[j] SortUtil.swap(data,j,j-1); .QhH!#Y2D
} hVfiF
} bnWKfz5
} /@*J\0h(-
} O>![IH(L
rCmxv7"
a}
} @c8s<9I]
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选择排序: {mlJ E>~%
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package org.rut.util.algorithm.support; })l+-H"
=&-hU|ur
import org.rut.util.algorithm.SortUtil; [SW@ "C!
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/** (5"BKu1t
* @author treeroot &<u
pj b
* @since 2006-2-2 $j~oB:3n7
* @version 1.0 3x9O(;k
*/ zn4Yo
public class SelectionSort implements SortUtil.Sort { 10/N-=NG18
;5*)kX
/* D4"](RXH
* (non-Javadoc) P7Th94
* WAj26";M(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y %k`
*/ >e4
public void sort(int[] data) { v!;E1
int temp; Y=gj{]4
for (int i = 0; i < data.length; i++) { n},~2
int lowIndex = i; [xXml On!
for (int j = data.length - 1; j > i; j--) { 1m/=MET]
if (data[j] < data[lowIndex]) { by {G{M`X
lowIndex = j; |\/0S
} $E^#DjhRQ3
} t;DZ^Z"{
SortUtil.swap(data,i,lowIndex); ':7%@2Zo
} `TkIyGr
} mne^PSI:
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} u+]v.Mt
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Shell排序: 5k`[a93T
F_SkS?dB
package org.rut.util.algorithm.support; !Xwp;P=
tPS.r.0#^
import org.rut.util.algorithm.SortUtil; MwxfTH"wi
Q<L.!%vu}
/** ,EgIH%*g
* @author treeroot
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* @since 2006-2-2 O=1uF
* @version 1.0 's{-1aW
*/ ?=<vC
public class ShellSort implements SortUtil.Sort{ }P$48o VY
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/* (non-Javadoc) JlsRP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kWfNgu$xK
*/ eiZv|?^0
public void sort(int[] data) { `d=$9Pi
for(int i=data.length/2;i>2;i/=2){ Z`xz |:D+
for(int j=0;j insertSort(data,j,i); qYFol#=%
} 7"f$;CN?~
} %r5&CUE5?
insertSort(data,0,1); Y2Mti-\
} Vgs( feGs
s,^?|Eo;0
/** O0xL;@rBe
* @param data SaEe7eHd
* @param j &7 }!U
* @param i OwP9=9};
*/ vd-`?/,||
private void insertSort(int[] data, int start, int inc) { NQ<~$+{
int temp; I}Z[F,}*J
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); *DX6m
} Y*``C):K%
} }>xgzhdT
} oll~|J^sg
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} v&(X&q
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快速排序:
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package org.rut.util.algorithm.support; 3V`K^X3
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import org.rut.util.algorithm.SortUtil; asR6,k
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/** OgrUP
* @author treeroot vjJ!d#8
* @since 2006-2-2 Cc]s94
* @version 1.0 #;H,`r
*/ `QR2!W70o3
public class QuickSort implements SortUtil.Sort{ N_L&!%s
n?pCMS|
/* (non-Javadoc) i{VjSWq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "zw?AC6
*/ G=3/PYp
public void sort(int[] data) { H/Goaf%
quickSort(data,0,data.length-1); ~GfcI:Zz&
} /,5`#Gte_
private void quickSort(int[] data,int i,int j){ >w9)c|
int pivotIndex=(i+j)/2; eEn_aX
file://swap VzpPopD,QW
SortUtil.swap(data,pivotIndex,j); V#!ypX]AB[
_\"P<+!
int k=partition(data,i-1,j,data[j]); #rV=!j||
SortUtil.swap(data,k,j); @DkPJla&
if((k-i)>1) quickSort(data,i,k-1); ok'0Byo
if((j-k)>1) quickSort(data,k+1,j); _OcgD<
}QncTw0
} fB"3R-H?O
/** S#+G?I3w
* @param data K4n1#]8i
* @param i 5];
8
* @param j ;k7` `
* @return 6kT
l(+
*/ ;lX:EU
private int partition(int[] data, int l, int r,int pivot) { D{.%Dr?
do{ z.Y7 u3K.8
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); HcHfwLin0
SortUtil.swap(data,l,r); $2>tfKhtA
} 2>fG}qYy$
while(l SortUtil.swap(data,l,r); wXZ.D}d
return l; yixW>W}
} lIzJO$8cM
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} A
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改进后的快速排序: #Opfc8pm'
FPMhHHM
package org.rut.util.algorithm.support; 4,s: G.g
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import org.rut.util.algorithm.SortUtil; ~c?yHpZx%
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/** /l+x&xYD
* @author treeroot 92Ar0j]
* @since 2006-2-2 M|d[iaM,
* @version 1.0
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*/ S;ulJ*qv
public class ImprovedQuickSort implements SortUtil.Sort { DGHX:Ft#
83i%3[L
private static int MAX_STACK_SIZE=4096; r.i.w0B(
private static int THRESHOLD=10; 4C01=,6ye
/* (non-Javadoc) pJa FPO..|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &%qD Som3
*/ e,~c~Db*
Q
public void sort(int[] data) { o,\%c"mC
int[] stack=new int[MAX_STACK_SIZE]; #yr19i ?
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int top=-1; ;S`N q%,
int pivot; mkE*.I0=
int pivotIndex,l,r; IH~H6US
5\=9&{WjND
stack[++top]=0; 7U.g4x|<
stack[++top]=data.length-1; N%r}0
0E\R\KO$>
while(top>0){ D<++6HN
int j=stack[top--]; Mh+'f 93
int i=stack[top--]; ~O1*]
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pivotIndex=(i+j)/2; 0BaL!^>
pivot=data[pivotIndex]; j{U-=[$'
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SortUtil.swap(data,pivotIndex,j); M5ZWcD.1
_hh|/4(
file://partition xo@N~
l=i-1; E=QL4*?
r=j; g=U?{<8.m
do{ X'?v8\mPK
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); &2xYG{Z
SortUtil.swap(data,l,r); /WHhwMc!
} pHg8(ru|
while(l SortUtil.swap(data,l,r); lf|^^2'*2<
SortUtil.swap(data,l,j); uhc0,V;S
Gzp)OHgJ
if((l-i)>THRESHOLD){ M\v4{\2l0
stack[++top]=i; y'@l,MN{
stack[++top]=l-1; *?K`T^LS
} (6h7 'r $
if((j-l)>THRESHOLD){ ,s)~Y
p?<
stack[++top]=l+1; bLV@Ts
stack[++top]=j; 4uftx1o
} 'E&K%/d
~-:CN(U
} &PgdCijGq;
file://new InsertSort().sort(data); v$tS2N2
insertSort(data); #[KwR\b{:+
} :X4\4B*~
/** :T{or-
* @param data 8dA/dMQ
*/ FwW%@Y
private void insertSort(int[] data) { \pzvoj7{
int temp; vq5I 2
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <M&]*|q>g%
} O4E2)N
} |@ldXuYb
} ]@8=e'V
"V^jAPDXb
} %[Ds-my2
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归并排序: &9ZIf#R
"mH^Owai
package org.rut.util.algorithm.support; ^@19cU?q
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import org.rut.util.algorithm.SortUtil; h{JVq72R
% qE#^ U
/** ?x[>g!r
* @author treeroot {a_L
/"7
* @since 2006-2-2 -{7N]q)}
* @version 1.0 ?Jr<gn^D
*/ /N^+a-.Qd
public class MergeSort implements SortUtil.Sort{ u?J(l)gd
CD tYj
/* (non-Javadoc) Q-au)R,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &qpA<F@7
*/ 3+$O#>
public void sort(int[] data) { ]Aluk|"`U
int[] temp=new int[data.length]; z::2O/ho
mergeSort(data,temp,0,data.length-1); C=b5[, UCB
} C {,d4KG
(i?^g &
private void mergeSort(int[] data,int[] temp,int l,int r){ 6h,'#|:d
int mid=(l+r)/2; f7W=x6Z4
if(l==r) return ; C`#N
Q*O
mergeSort(data,temp,l,mid); }GC{~
SZ4
mergeSort(data,temp,mid+1,r); aLq;a
for(int i=l;i<=r;i++){ \bsm#vY,
temp=data; ibAA:I,d
} d{trO;%#f
int i1=l; dog,vUu
int i2=mid+1; 7,4x7!
for(int cur=l;cur<=r;cur++){ &
vIKNGJ^
if(i1==mid+1) a,E;R$[!
data[cur]=temp[i2++]; Sh*P^i.]+
else if(i2>r) ^\6UTnS.
data[cur]=temp[i1++]; o{hKt?
else if(temp[i1] data[cur]=temp[i1++]; i:$g1
else ;8v5 qz
data[cur]=temp[i2++]; ( 0h]<7
} $+);!?^|:
} >@%!r
|S8pq4eKJ_
} C,]Ec2
GGuLxc?(
改进后的归并排序: z? aDOh
@gj5'
package org.rut.util.algorithm.support; Rta P+6'X
p~b$+8#+
import org.rut.util.algorithm.SortUtil; w '"7~uN
Mzd}9x$'J
/** :W&\})
* @author treeroot {h=Ai[|l4Q
* @since 2006-2-2 pZjFpd|
* @version 1.0 [~o3S$C&7
*/ Q4PXC$u
public class ImprovedMergeSort implements SortUtil.Sort { KJ~pY<a?
<>Im$N ai
private static final int THRESHOLD = 10; ,rdM{ r
G~]BC#nB_
/* $d=lDN
* (non-Javadoc) zW _'sC
* 5 9vGLN!L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;@
e|}Gk
*/ 0#7dm9
public void sort(int[] data) { ex1ecPpN
int[] temp=new int[data.length]; L }mhMxOTi
mergeSort(data,temp,0,data.length-1); x9e
9$ww}
} vK C>t95
ivq4/Y]-X
private void mergeSort(int[] data, int[] temp, int l, int r) { %'HUC>ChN
int i, j, k; @RP|?Xc{?
int mid = (l + r) / 2; J\*d4I<(Rt
if (l == r) |H4'*NP"
return; }VGiT~2$
if ((mid - l) >= THRESHOLD) R[c_L=
mergeSort(data, temp, l, mid); ;gyE5n-{
else %([c4el>\F
insertSort(data, l, mid - l + 1); |(<L!6
if ((r - mid) > THRESHOLD) WToAT;d2h
mergeSort(data, temp, mid + 1, r); ]*|K8&jxl
else ||4Dtg
K
insertSort(data, mid + 1, r - mid); j$^]WRt
5ZVTI,4K
for (i = l; i <= mid; i++) { k.ZfjX"
temp = data; -{h[W bf
} C0%%@
2+
for (j = 1; j <= r - mid; j++) { ?2TH("hV$
temp[r - j + 1] = data[j + mid]; Z7^}G=*
} #O
WSy'Qnt
int a = temp[l]; [;I8 ZVE
int b = temp[r]; [oj"Tn(
for (i = l, j = r, k = l; k <= r; k++) { SXEiyy[7v
if (a < b) { ht|r+v-
data[k] = temp[i++]; >`:+d'Jv0
a = temp; 66*o2D\Q*G
} else { {E/TC%
data[k] = temp[j--]; kXr%73s
b = temp[j]; GpL#,q Yc
} E@FenCF
} Xd6y7s
} 0 *\=Q$Yy
@2gMtf?<
/** K5SO($
* @param data YSgF'qq\
* @param l )VT/kIq-U
* @param i l+6(|"md
*/ 0pFHE>
private void insertSort(int[] data, int start, int len) { +mQSlEo
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); pQNFH)=nw
} o__q)"^~-
} L
~w=O!
} 6{'6_4;Fv(
} ^|C|=q~:
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堆排序: &[kgrRF@HU
,k!a3"4+TJ
package org.rut.util.algorithm.support; o3=kF
u$#7W>R
import org.rut.util.algorithm.SortUtil; 1RA$hW@}
)^TQedF
/** +QX>:z
* @author treeroot y~7lug
* @since 2006-2-2 TpgBS4q
* @version 1.0 &pm{7nH
*/ ` qTY
public class HeapSort implements SortUtil.Sort{ >9`ep7
iC]lO
/* (non-Javadoc) w>uZ$/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >{a,]q*
*/ p( *3U[1
public void sort(int[] data) { Q8?D}h
MaxHeap h=new MaxHeap();
y6}):|
h.init(data); SK52.xXJ
for(int i=0;i h.remove(); 4Z}{hc\J
System.arraycopy(h.queue,1,data,0,data.length); F/sBr7I
} lIg2iun[n
#Uh 5tc
private static class MaxHeap{ "ux]kfoT
AvZ) 1(
void init(int[] data){ Wg^cj:&`u
this.queue=new int[data.length+1]; )/"7$2Aoy
for(int i=0;i queue[++size]=data; p'~5[JR:
fixUp(size); 31& .Lnq
} u9w&q^0dqG
} Kdu\`c-lB
,rQ)TT
private int size=0; x-&v|w '
2p>SB/
private int[] queue; Y)}%SP>,
Yj6p19
public int get() { "Q{~Bj~
return queue[1]; 4/?}xD|?
} &Fjilx'k
~uadivli
public void remove() { S7{.liHf
SortUtil.swap(queue,1,size--); % VpBB
fixDown(1); nM-SDVFM
} DWQQ615i
file://fixdown D^55:\4(
private void fixDown(int k) { W"(`n4hi3
int j; pm~;:#z7
while ((j = k << 1) <= size) { N+qLxk
if (j < size %26amp;%26amp; queue[j] j++; Aq%^>YAp
if (queue[k]>queue[j]) file://不用交换 @T1+b"TC
break; Z&jb,eh2
SortUtil.swap(queue,j,k); ?VQLY=?
k = j; /;6@M=6u
} 0WE1}.J<
} ?7)(qnbe"
private void fixUp(int k) { 2Fg t)`{!
while (k > 1) { Wx$q:$h@q
int j = k >> 1; FJ8@b
if (queue[j]>queue[k]) BK9x`Oo 2
break; '<< ~wt
SortUtil.swap(queue,j,k); 2,V+?'^j
k = j; PMhhPw]
} 1D p@n
} _G #"B{7
'h>5&=r
} lc7a@qnw
bDBO+qA
} zL`uiZl
'QojSq
SortUtil: (0#F]""\e
=4<S8Cp
package org.rut.util.algorithm; X|E+K
;c
Co+(
import org.rut.util.algorithm.support.BubbleSort; aroVyUs3j
import org.rut.util.algorithm.support.HeapSort; YQV?S
import org.rut.util.algorithm.support.ImprovedMergeSort; W^.-C
import org.rut.util.algorithm.support.ImprovedQuickSort; ^7bf8 ^`
import org.rut.util.algorithm.support.InsertSort; )nHE$gVM
s
import org.rut.util.algorithm.support.MergeSort; Wk#h,p3
import org.rut.util.algorithm.support.QuickSort; E8_Le
import org.rut.util.algorithm.support.SelectionSort; R{uJczu
import org.rut.util.algorithm.support.ShellSort; ttFY
_F~S
q%k(M[
/** a`b zFu{
* @author treeroot RE
$3| z
* @since 2006-2-2 |W*@}D
* @version 1.0 D`:d'ow~KQ
*/ uO@3vY',n
public class SortUtil { D&l,SD
public final static int INSERT = 1; UlNfI}#X
public final static int BUBBLE = 2; 7k=F6k0)
public final static int SELECTION = 3; B$TChc3B
public final static int SHELL = 4; @ Rx6 >52>
public final static int QUICK = 5; |4S?>e
public final static int IMPROVED_QUICK = 6; !Nl.Vb
public final static int MERGE = 7; M*|VLOo=v
public final static int IMPROVED_MERGE = 8; }"?nU4q;S
public final static int HEAP = 9; )w2K&Zr0
J4v0O="
public static void sort(int[] data) { ct}%Mdg
sort(data, IMPROVED_QUICK); qJ+52U|z
} W.`Xm(y
private static String[] name={ Zfy~mv$
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" zf3:<CRX5
}; yvd
`nV
T3 9C lH
private static Sort[] impl=new Sort[]{ y(nsyA
new InsertSort(), VP%i1|XZJ
new BubbleSort(), poQdI?ed,
new SelectionSort(), z {pC7e5
new ShellSort(), /X^3=-{8
new QuickSort(), yw.~trF&%
new ImprovedQuickSort(), g6VD_
new MergeSort(), ?QMclzh*-
new ImprovedMergeSort(), }#OqU#
q|
new HeapSort() o"#TZB+k
}; ;EJPrDHTk
inPE/Ux
public static String toString(int algorithm){ wD6!#t k
return name[algorithm-1]; P}hY{y'
} UOWIiu
:'y{dbKp"
public static void sort(int[] data, int algorithm) { <r<Dmn|\a
impl[algorithm-1].sort(data); j!x<QNNX
} FE+7X=y
J0Hm)*
public static interface Sort { VX;zZ`BJ
public void sort(int[] data); )
\-96 xd
} B6ed,($&
g=xv+e
public static void swap(int[] data, int i, int j) { au~]
int temp = data; 9p2>`L
data = data[j]; 6Lg!Lodu
data[j] = temp; Any Zi'
} ]l=O%Ev
} F_nZvv[H?