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。 !r$?66q/
插入排序: BL6t>
#~%tdmGuL
package org.rut.util.algorithm.support; 4(Gs$QkSo|
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import org.rut.util.algorithm.SortUtil; 'F^nW_ryW
/** :ak D
* @author treeroot NJSzOL_
* @since 2006-2-2 sF^3KJ|
* @version 1.0 /~V.qisZ
*/ <@ D`16%&
public class InsertSort implements SortUtil.Sort{ 'm9f:iTr
LGZ5py=xb
/* (non-Javadoc) 6b4Kcl <i
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (nfra,'
*/ \9dSI
public void sort(int[] data) { +J30OT8
int temp; }2-<}m9}
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); O=
PFr"
} #+p30?r0y
} 0{g @j{Lbz
} I^sWf3'db
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} "&%:
9O
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冒泡排序: $8h^R#
}C.M4{a\
package org.rut.util.algorithm.support; W@v@|D@
4thLK8/c5g
import org.rut.util.algorithm.SortUtil; WJCEiH
$Z(fPKRN/
/** uhvmh
* @author treeroot bs$x%CR
* @since 2006-2-2 jC>l<d_
* @version 1.0 rXXIpQRi$S
*/ L{(\k$>'
public class BubbleSort implements SortUtil.Sort{ ^l;nBD#nJ
Z<6xQTx
/* (non-Javadoc) \^2%v~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mz@`*^7?
*/ cMOvM0f
public void sort(int[] data) { JCZ"#8M3
int temp; &x19]?D"+
for(int i=0;i for(int j=data.length-1;j>i;j--){ '{WYho!
if(data[j] SortUtil.swap(data,j,j-1); FU/yJy
} ",	
} Va,M9)F
} "H\'4'hg
} Bi2be$nV
b{qeu$G R
} =\.Oc+p4
R[ p. )F7
选择排序: D"_~Njf
I9P<!#q>
package org.rut.util.algorithm.support; 6r"uDV #0
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import org.rut.util.algorithm.SortUtil; {?m;DYv
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/** k .? aq
* @author treeroot x
\B!0"~
* @since 2006-2-2 z)"7qqA
* @version 1.0 dO.?S89L
*/ cY?<
W/
public class SelectionSort implements SortUtil.Sort { '(A)^K>+
T0n=nC}<
/* %\#s@8=2u
* (non-Javadoc) nB2AmS
* :UMg5eZ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Dgh|,LqUB
*/ )iadu
public void sort(int[] data) { ~8~B VwZ_
int temp; bHE'R!*
for (int i = 0; i < data.length; i++) { z52T"uW
int lowIndex = i; $+P9@Q$
for (int j = data.length - 1; j > i; j--) { R)?b\VK2$
if (data[j] < data[lowIndex]) { <cG .V|B
lowIndex = j; 9frP`4<)
} <e"O`*ZJ
} %||}WT-wv
SortUtil.swap(data,i,lowIndex); +;SQ}[
} o<P@:}K
} a*JM2^,HO
|,M&ks
} r*]0PQ{?
86O"w*9
Shell排序: x bF*4;^SI
;;'b;,/
package org.rut.util.algorithm.support; f%9EZ+OP
8>a/x ,
import org.rut.util.algorithm.SortUtil; {Pm^G^EP
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/** /9dV!u!;
* @author treeroot +4^XFPq~
* @since 2006-2-2 ZxkX\gl91
* @version 1.0 )}L*8 LV
*/ L(Q v78F
public class ShellSort implements SortUtil.Sort{ BX$t |t;!m
Y W_E,A>h
/* (non-Javadoc) p#~'xq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m&o}qzC'y
*/ X&DuX %x0
public void sort(int[] data) { VpSk.WY/ e
for(int i=data.length/2;i>2;i/=2){ ie+&@u
for(int j=0;j insertSort(data,j,i); *>%34m93
} Gxfw!aF~
} TN3, \qgV
insertSort(data,0,1); c.jq?Q k
} 8}h ^Frh
h-h U=I8
/** hKjvD.6]%
* @param data FV^CSaN[R
* @param j ;`g\T u
* @param i b1{~j]"$L
*/ Zy@35;r
private void insertSort(int[] data, int start, int inc) { %Q"zU9
int temp; 0?l|A1I%
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); _i~n!v
} ]YkF^Pf!v
} M`\c'|i/
} '"QC^Joz
{n%-^9b1{&
} |o~<Ti6]
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快速排序: :/ns/~5xa:
Ne*I$T 5
package org.rut.util.algorithm.support; xjOy3_Js
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import org.rut.util.algorithm.SortUtil; J]ivIQ
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/** DrbjqQL+.
* @author treeroot =N01!?{
* @since 2006-2-2 ~!~VC)a*
* @version 1.0 A$ %5l
*/ mH*42XC*
public class QuickSort implements SortUtil.Sort{ b,5H|$nLu
#{7=
/* (non-Javadoc) vIG8m@-!&;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Pgf$GXE
*/ f2[z)j7
public void sort(int[] data) { OTd=(dwh
quickSort(data,0,data.length-1); |s|>46E
} !Jb?rSJ.h
private void quickSort(int[] data,int i,int j){ 4?M=?K0
int pivotIndex=(i+j)/2; O;
EI&
file://swap 94I8~Jj4
SortUtil.swap(data,pivotIndex,j); @]tFRV
F0:Fv;
int k=partition(data,i-1,j,data[j]); '[JrP<~^o
SortUtil.swap(data,k,j); "[@-p
if((k-i)>1) quickSort(data,i,k-1); 7;KmJ}$
if((j-k)>1) quickSort(data,k+1,j); |Z6rP-
T
:CsYj1
} $f>Mz|j
/** W-=~Afy
* @param data ^te9f%>$l
* @param i m}6GVQ'Q
* @param j rS/Q
* @return Zb-TCS+3l
*/ &9PzBc
private int partition(int[] data, int l, int r,int pivot) { xuO5|{h
do{ N-jFA8n
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); TJ7on.;
SortUtil.swap(data,l,r); lE08UEk1i
} }txHuq1Q.
while(l SortUtil.swap(data,l,r); K"eR6_k
return l; $;7?w-.
} aGNt?)8WPZ
*r p@`W5
} wQb")3dw
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改进后的快速排序: g]iWD;61
/fA:Fnv
package org.rut.util.algorithm.support; 8gJ"7,}-'
/MsXw/],
import org.rut.util.algorithm.SortUtil; ~^"
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/** ?v#t{e0eQ
* @author treeroot MR%M[SK1
* @since 2006-2-2 Rb<aCX
* @version 1.0 3s\2 9gq
*/ hnL"f[p@gC
public class ImprovedQuickSort implements SortUtil.Sort { s!Y>\3rMW
e{O mW
private static int MAX_STACK_SIZE=4096; 82Nh;5Tr
private static int THRESHOLD=10; r$;DA<<|<c
/* (non-Javadoc) .qy._C2(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w |>:mQnU
*/ ?A(=%c|,g
public void sort(int[] data) { )HS|pS:
int[] stack=new int[MAX_STACK_SIZE]; ?)Z~H,Q(z
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int top=-1; {~16j"
int pivot;
}CaL:kY8
int pivotIndex,l,r; #93;V'b]
N_$ X4.7p
stack[++top]=0; CY)Wuv ^
stack[++top]=data.length-1; ~t<BZu
!fwLC"QC
while(top>0){ ex $d~
int j=stack[top--]; &xr?yd
int i=stack[top--]; )Be}Ev#)Zx
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pivotIndex=(i+j)/2; 8_U*_I7(
pivot=data[pivotIndex]; dSsMa3X[n
zi2hi9A
SortUtil.swap(data,pivotIndex,j); #$K\:V+ 4
P`[6IS#\S
file://partition #1z}~1-
l=i-1; S#!PDg
r=j; j !&g:{ e
do{ +;`Cm.Iu
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); /QHvwaW[
SortUtil.swap(data,l,r); o&rejj#
} }pPxN@X
while(l SortUtil.swap(data,l,r); Kx*;!3-V$
SortUtil.swap(data,l,j); W=mh*G3y
W3{k{~
if((l-i)>THRESHOLD){ yXc/Nl%
stack[++top]=i; T$GhE
stack[++top]=l-1; r4Pm
i
} 3?Bq((
if((j-l)>THRESHOLD){ vwZ2kk!|i
stack[++top]=l+1; n1DD+@
stack[++top]=j; e_g7E+6
} *M/3 1qI
FlD
!?
} Wh(V?!^@5
file://new InsertSort().sort(data); 2<fG= I8
insertSort(data); ?b2"~A
} -nN }8&l
/** s4;SA
* @param data q3T'rw%Eh
*/ ?5'UrqYSW
private void insertSort(int[] data) { <bXfjj6YJ@
int temp; [wOz<<
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); " b3-'/&
} e_=TkG1E6
} |?A:[C#X
} L7\V^f%yCm
lldNIL6B%
} Gk:tT1
P^[eTR*?
归并排序: wtM1gYl^
h'lqj0
package org.rut.util.algorithm.support; R*0]*\C z
59Lc-JJ
import org.rut.util.algorithm.SortUtil; 8=!uQQ
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/** mHe[
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* @author treeroot Ls<^z@I
* @since 2006-2-2 A |u-VXQ
* @version 1.0 }fO+b5U
*/ +~(SeTY
public class MergeSort implements SortUtil.Sort{ n
f.H0i;
jQBL8<
/* (non-Javadoc) n)|{tb^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )_n=it$
*/ \)$:
public void sort(int[] data) { y>^FKN/
int[] temp=new int[data.length]; 3c%_RI.
mergeSort(data,temp,0,data.length-1); 'VgEf:BS
} ff&jR71E
&&% oazR=
private void mergeSort(int[] data,int[] temp,int l,int r){ &NKb},~
int mid=(l+r)/2; mUj_V#v
if(l==r) return ; j)ME%17
mergeSort(data,temp,l,mid); }1
,\*)5
mergeSort(data,temp,mid+1,r); n&l(aRoyx
for(int i=l;i<=r;i++){ qCkC 2Fy(
temp=data; EDT9O
} (/7b8)g
int i1=l; !He_f-eZ
int i2=mid+1; [*C%u_h
for(int cur=l;cur<=r;cur++){ |yl,7m/B-G
if(i1==mid+1) VBUrtx:
data[cur]=temp[i2++]; nz|6CP
else if(i2>r) |\2>n!
data[cur]=temp[i1++]; FI,K 0sO/|
else if(temp[i1] data[cur]=temp[i1++]; %oB0@&!mS
else "1$X5?%
data[cur]=temp[i2++]; !RP0W
} ,wf:Fr
} IR:GoD+
[tT_ z<e`
} AJ+\Qs(0
I
cASzSjYX
改进后的归并排序: Mw3$QRM
Xdi<V_!BC-
package org.rut.util.algorithm.support; 9wlp
AK
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import org.rut.util.algorithm.SortUtil; eC"k-a8j+
",l6-<s
/** iX o(
* @author treeroot Llkh
kq_
* @since 2006-2-2 3-btaG'P
* @version 1.0 _aYhW{wW
*/ :zX^H9'E<(
public class ImprovedMergeSort implements SortUtil.Sort { tnAj3wc
ul3~!9F5F
private static final int THRESHOLD = 10; ,4S[<(T"
vf zC2
/* =igTY1|af
* (non-Javadoc) [;yKbw!C
* #]dq^B~~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d5NE:%K
*/ DXG`% <ZMn
public void sort(int[] data) { dG7d}0Ou'
int[] temp=new int[data.length]; X1d{7H8A2
mergeSort(data,temp,0,data.length-1); wK0x\V6dJ
} Td,d9M
?%`Ph ?BZl
private void mergeSort(int[] data, int[] temp, int l, int r) { >;XtJJS
int i, j, k; :8(jhs
int mid = (l + r) / 2; Rz&`L8Bz
if (l == r) >-\^ )z
return; J90:c@O"w
if ((mid - l) >= THRESHOLD) k;jl3GV
mergeSort(data, temp, l, mid); CcW3o"=4
else *=O]^|]2
insertSort(data, l, mid - l + 1); L*dGo,oN
if ((r - mid) > THRESHOLD) =xDxX#3
mergeSort(data, temp, mid + 1, r); g0"xG}d
else `*[\b9>
insertSort(data, mid + 1, r - mid); DLP@?]BBOA
z6 }p4
for (i = l; i <= mid; i++) { 2*^=)5Gj-h
temp = data; |JR`" nF`
} V,rR*a&p
for (j = 1; j <= r - mid; j++) { x&^Xgi?
temp[r - j + 1] = data[j + mid]; +'SL5d*
} 8G3 Z,8P4(
int a = temp[l]; 1) K<x
int b = temp[r]; ," 5HJA4
for (i = l, j = r, k = l; k <= r; k++) { T[^&ZS]s
if (a < b) { 4CchE15
data[k] = temp[i++]; RhKDQGdd
a = temp; GApvRR+Z
} else { [TQYu:e
data[k] = temp[j--]; [T4{K&
b = temp[j]; lwfM>%%N
} 8\9W:D@"x
} kP}l"CN4
} Y'jgp Vt
|=v,^uo
/** wl%ysM|x
* @param data m'
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* @param l %
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/m.$
* @param i y`8U0TE3R
*/ Ym"^Ds}
private void insertSort(int[] data, int start, int len) { I$S*elveG
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Du
+_dr^4
} Xs|d#WbX
} @`+\vmfD
} J zFR9DEt
} *~4<CP+"0
~8UMwpl-
堆排序: Ek_&E7
)MSCyPp5
package org.rut.util.algorithm.support; A$7K5
J"<
h#@`
import org.rut.util.algorithm.SortUtil; cAGM|%
bf=\ED ^
/** hrD2-S
* @author treeroot Xjxa
2D
* @since 2006-2-2 !]}C!dXd
* @version 1.0 j@#RfVx
*/ +w(6#R8u5
public class HeapSort implements SortUtil.Sort{ -hfkF+=U'
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/* (non-Javadoc) T%9t8?I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -dF (_ %C
*/ B5+Q%)52
public void sort(int[] data) { K@DFu5
MaxHeap h=new MaxHeap(); |OAiHSW"V
h.init(data); &hI!0DixX
for(int i=0;i h.remove(); ~|, "w90
System.arraycopy(h.queue,1,data,0,data.length); 6Ad UlPM
} x5xMr.vm
Pzd!"Gl9
private static class MaxHeap{ A' uaR?
/=l!F'
void init(int[] data){ l&e{GHz
this.queue=new int[data.length+1]; O(-6Zqk8Q
for(int i=0;i queue[++size]=data; ^8bc<c:P
fixUp(size); jj;TS%
} 3!cenyE
} "x.iD,>k
jTNt!2 :B
private int size=0; 6 <`e]PT
%Jd!x{a`>A
private int[] queue; Avyer/{
K$GQc"
public int get() { a%a0/!U[
return queue[1]; >dgq2ok!u
} zsd<0^
p\{
7&HcrkP]
public void remove() { v5e*R8/
SortUtil.swap(queue,1,size--); G\5Bdo1g
fixDown(1); of7p~{3H
} ? p[Rv
file://fixdown S76MY&Vx23
private void fixDown(int k) { "".a(ZGg
int j; pZ[|Q 2(
while ((j = k << 1) <= size) { 8 l= EL7
if (j < size %26amp;%26amp; queue[j] j++; yn@wce
if (queue[k]>queue[j]) file://不用交换 @`nG&U
break; %dr*dA'
SortUtil.swap(queue,j,k); })kx#_o]'d
k = j; 1ljcbD)T;
} _-#o[>2[
} x $[_ Hix
private void fixUp(int k) { ;.xKVH/@
while (k > 1) { {*g{9`
int j = k >> 1; F4"bMN
if (queue[j]>queue[k]) P_mP ^L
break; `-cw[@uD
SortUtil.swap(queue,j,k); x[)]u8^A
k = j; 9An\uH)mL
} U6wy^!_X9
} UUbO\_&y
t>LSP$
} ~#VDJ[Z
9vW]HOK
} [ g:cG
y4 ]5z/
SortUtil: z<^LY]
pmurG
package org.rut.util.algorithm; =+?OsH
v
hMvJNI6O
import org.rut.util.algorithm.support.BubbleSort; k EAF1RP:
import org.rut.util.algorithm.support.HeapSort; n"}*C|(k
import org.rut.util.algorithm.support.ImprovedMergeSort; bUM4^m
import org.rut.util.algorithm.support.ImprovedQuickSort; 5 A5t
import org.rut.util.algorithm.support.InsertSort; @e\
@EW
import org.rut.util.algorithm.support.MergeSort; _\,lv
\u
import org.rut.util.algorithm.support.QuickSort; P*%P"g
import org.rut.util.algorithm.support.SelectionSort; <tsexsw
import org.rut.util.algorithm.support.ShellSort; i|,}y`C#
H"Hl~ ~U
/** =TzJgx
* @author treeroot {(asy}a9K
* @since 2006-2-2 #j+cl'
* @version 1.0 .!lLj1?p
*/ ,!,M'<?"
public class SortUtil { =oiz@Q @H
public final static int INSERT = 1; y0?HZ Xq
public final static int BUBBLE = 2; r58<A'#
public final static int SELECTION = 3; 3 m-g-
public final static int SHELL = 4; {%P2.:
public final static int QUICK = 5; 9AQ,@xP|
public final static int IMPROVED_QUICK = 6; U H+#Nel+!
public final static int MERGE = 7; x;} 25A|
public final static int IMPROVED_MERGE = 8; UQYHR+
public final static int HEAP = 9; *V+,X
xC0y2+)|
public static void sort(int[] data) { R- ,L"Vv
sort(data, IMPROVED_QUICK); ei=u$S.
} <}c7E3Uc
private static String[] name={ vpdPW %B
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" :f_oN3F p
}; #uC}IX2n
FzCXA=m
private static Sort[] impl=new Sort[]{ P\{s C6E
new InsertSort(), ^'Rs`e
new BubbleSort(), 9jx>&MnWs
new SelectionSort(), 9&C8c\Y
new ShellSort(), z?kE((Ey
new QuickSort(), $nIE;idk
new ImprovedQuickSort(), )"{}L.gC6
new MergeSort(), }vgM$o
new ImprovedMergeSort(), s[/d}S@ >
new HeapSort() pzQc UG
}; E[zq<&P@
saQo]6#
public static String toString(int algorithm){ &t_TLV 8T
return name[algorithm-1]; =`N 0
} eAjR(\f>
63$`KG3
public static void sort(int[] data, int algorithm) { lZ2gCZ
impl[algorithm-1].sort(data); 55] MRv
} u WdKG({][
cG@Wo8+
public static interface Sort { kJNg>SN*@#
public void sort(int[] data); ni )G
} tux`-F
"A~D(1K
public static void swap(int[] data, int i, int j) { 8ql<7RTM!
int temp = data; 4OO^%`=)M'
data = data[j]; {9j0k`A
data[j] = temp; x5;D'Y t"|
} Q?([#
} R*k;4*1u