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。 ODxCD%L
插入排序: wln"g,ct
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package org.rut.util.algorithm.support; :{ Lihe~\
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import org.rut.util.algorithm.SortUtil; x~E\zw
/** s]pNT1,
* @author treeroot /<k]mY cu
* @since 2006-2-2 nP0rg
* @version 1.0 y9~:[ jB
*/ 1 fTf+P
public class InsertSort implements SortUtil.Sort{ dN@C)5pm5`
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/* (non-Javadoc) Ry40:;MYN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5nXmaj
*/ $U"pdf
public void sort(int[] data) { U
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int temp;
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); C,B{7s0-
} P1&Irwb`
} Y o\%53w/
} -ZoAbp$
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} 2>g!+p Ox
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冒泡排序: l6N"{iXU
Fr#QM0--B
package org.rut.util.algorithm.support; 0*]ZC'pm
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import org.rut.util.algorithm.SortUtil; drJUfsxV
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/** fs2y$HN
* @author treeroot B.}j1Bb
* @since 2006-2-2 'VV"$`Fu"
* @version 1.0 4!A(7
s4t
*/ 7
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public class BubbleSort implements SortUtil.Sort{ 7 iQa)8,
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/* (non-Javadoc) g6@^n$Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QwLSL<.
*/ >6|Xvtf
public void sort(int[] data) { {6mFI1;q
int temp; {d%hkbN+{
for(int i=0;i for(int j=data.length-1;j>i;j--){ F#z1 sl'
if(data[j] SortUtil.swap(data,j,j-1); 91UC>]}H
} 2^)_XVX1
} ]Aj5 K
} L$?YbQo7
} d~y]7h |
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} /5~j"|
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Y ^5RM
选择排序: k)agbx
;".]W;I*O
package org.rut.util.algorithm.support; o97*3W]
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import org.rut.util.algorithm.SortUtil; LAuaowE\v
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/** 0NXaAf:2Z
* @author treeroot 54Vb[;`Kkb
* @since 2006-2-2 G#3$sz
* @version 1.0 +<3e@s&
*/ E0eZal],
public class SelectionSort implements SortUtil.Sort { !*}E
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/* )jMk~;'r
* (non-Javadoc) A s8IjGNs{
* x";4)u=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [pz1f!Wn
*/ \7Fp@ .S3
public void sort(int[] data) { 8< z
int temp; >~uKkQ_p
for (int i = 0; i < data.length; i++) { > (W\Eh{J
int lowIndex = i; wdRk+
for (int j = data.length - 1; j > i; j--) { _!k\~4U
if (data[j] < data[lowIndex]) { G4"n`89LK
lowIndex = j; 2lxA/.f
} uy([>8uu
} jtPHk*>^wu
SortUtil.swap(data,i,lowIndex); 1t7T\~+F
}
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} 4qyPjAG
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} {%z5^o1)
V QbKrnX
Shell排序: !~]'&9
,DCrhk
package org.rut.util.algorithm.support; +`TwBN,kp-
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import org.rut.util.algorithm.SortUtil; F#|mN0op
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/** xsg55`
* @author treeroot v#9Uy}NJ9
* @since 2006-2-2 ^Fwdi#g
* @version 1.0 {QIdeB[
*/ ":L d}~>
public class ShellSort implements SortUtil.Sort{ 3MoVIf1
t#7owY$^
/* (non-Javadoc) 1pTQMf a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p:Zhg{sF
*/ |L6 +e*
public void sort(int[] data) { HG)h,&nc-
for(int i=data.length/2;i>2;i/=2){ +P=I4-?eX
for(int j=0;j insertSort(data,j,i); U.J/ "}5`T
} @eRv`O"
} UeaHH]U
insertSort(data,0,1); a7e.Z9k!
} } BnPNc[I
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/** I(+%`{Wv
* @param data ^%/d]Zwb
* @param j z5t"o !
* @param i Wp//SV
*/ A@n//AZM
private void insertSort(int[] data, int start, int inc) { CK1gzIg>
int temp; =T|m#*{.L
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); \_|r>vQ
} >>0c)uC|W
} .Yxf0y?uv
} ?yAjxoE~?
+'9eo%3O
} G4)X~.Fy
` MXGEJF
快速排序: I=}R
Z9
jR{Rd}QtQ
package org.rut.util.algorithm.support; 1lf]}V
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import org.rut.util.algorithm.SortUtil; ~)iQbLI
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/** yx/.4DW1Ua
* @author treeroot }G1hB#j
* @since 2006-2-2 3+iQct[
* @version 1.0 \m1jV>q
*/ 4GqE%n+ta~
public class QuickSort implements SortUtil.Sort{ f}+8m .g2
|&H(skF_
/* (non-Javadoc) kB;!EuL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;.b^A
*/ uzWz+atH
public void sort(int[] data) { "6o5x&H
quickSort(data,0,data.length-1); I07_o"3>qr
} !7aJfs2
private void quickSort(int[] data,int i,int j){ S$Fq1
int pivotIndex=(i+j)/2; w1
tg7^(@
file://swap KVCj06}j
SortUtil.swap(data,pivotIndex,j); Fx' E"d
2V =bE-
int k=partition(data,i-1,j,data[j]); g=x1}nm
SortUtil.swap(data,k,j); "\1QJ
if((k-i)>1) quickSort(data,i,k-1); P};GcV-
if((j-k)>1) quickSort(data,k+1,j); dE|luN~
,{u'7p
} =CjN=FM
/** (Y$48@x
* @param data (T Fo]c
* @param i M[,G#GO
* @param j $|r
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* @return <Z8^.t)|
*/ Blnc y
private int partition(int[] data, int l, int r,int pivot) { "N*i!h
do{ n0CS=
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); My JG2C#R
SortUtil.swap(data,l,r); OFcqouGE
} *IBCThj
while(l SortUtil.swap(data,l,r); c-hhA%@Wq
return l; (k&r^V/=
} %t<ba[9F
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} q X>\*@
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改进后的快速排序: cWNWgdk,`V
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package org.rut.util.algorithm.support; iHL`r1I!
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import org.rut.util.algorithm.SortUtil; O)Mf/P'
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/** -C<Ni
* @author treeroot WYNO6Xb#:
* @since 2006-2-2 Yl$Cj>FG
* @version 1.0 BbdJR]N/!h
*/ Jh)K0>R
public class ImprovedQuickSort implements SortUtil.Sort { h1 (MvEt
*.ZU" 5e
private static int MAX_STACK_SIZE=4096; O FCA~sR
private static int THRESHOLD=10; nlkQ'XGAI
/* (non-Javadoc) c/\$AJV.H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O9tgS@*Tv
*/ V9Gk``F<RZ
public void sort(int[] data) { ]~A<Q{
int[] stack=new int[MAX_STACK_SIZE]; |ZnRr
XTOZ]H*^
int top=-1; ' N?t=A
int pivot; `DPR >dd@
int pivotIndex,l,r; r0 6M.r
3!V$fl0
stack[++top]=0; 9?_ybO~Oq
stack[++top]=data.length-1; QP?Deltp
:&oUI&(o
while(top>0){ &G"r>,HU
int j=stack[top--]; \"u3x.!
int i=stack[top--]; f;"6I
J|BZ{T}d
pivotIndex=(i+j)/2; 0piBK=tE/
pivot=data[pivotIndex]; P_w\d/3
hIr$^%
SortUtil.swap(data,pivotIndex,j); 6Q6l?!|W4
Iu -CXc
file://partition ]$vJK
l=i-1; <.h\%&'U
r=j; 3koXM_4_{)
do{ k9^Vw+$m
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); (cj3[qq
SortUtil.swap(data,l,r); DB>Y#2j4h
} 426)H_wx
while(l SortUtil.swap(data,l,r); 0kD8w j%
SortUtil.swap(data,l,j); ~BVK6
yeCR{{B/'
if((l-i)>THRESHOLD){ `>q|_w\e
stack[++top]=i; r12{XW?~
stack[++top]=l-1; 4#qjRmt
} Z-{!Z;T)z
if((j-l)>THRESHOLD){ 'ZHu=UT7_
stack[++top]=l+1; A!kNqJ2
stack[++top]=j; x\Y%/C[Kc
} J\%<.S>
$<UX/a\sH
} e<>Lr
file://new InsertSort().sort(data); sX&M+'h
insertSort(data); 4pF U` g=
} %}=$HwN)
/** {tE/Jv $
* @param data c#G]3vTdE
*/ .'SXRrn&:C
private void insertSort(int[] data) { T2wn!N?r
int temp; X*~NE\
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); F GOa!G
} L-d8bA
} 1>*]jj}
} /S;o2\
QD:0iD?
} 2`* %NJ
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归并排序: ISr~JQr
LIH>IpamN
package org.rut.util.algorithm.support; );h\0w>3
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import org.rut.util.algorithm.SortUtil; skcMGEB
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/** N,ik&NIWy
* @author treeroot H/V%DO
* @since 2006-2-2
F!>K8 q
* @version 1.0 P:k(=CzZ@J
*/ g]xZ^M+
public class MergeSort implements SortUtil.Sort{ fC3IxlG
[6S"iNiyKT
/* (non-Javadoc) L1Q QU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5?kA)!|UB
*/ 9L#B"lh
public void sort(int[] data) { \| >eG u
int[] temp=new int[data.length]; VP 4t~$"
mergeSort(data,temp,0,data.length-1); 7IJb$af:;
} -e(2?Xq9
i`]M2Q
private void mergeSort(int[] data,int[] temp,int l,int r){ `^J~^Z7Y-
int mid=(l+r)/2; z% /ww7H
if(l==r) return ; Vd<=
y
mergeSort(data,temp,l,mid); H[N&Wiq/|
mergeSort(data,temp,mid+1,r); <Awx:lw.
for(int i=l;i<=r;i++){ N2&aU?`e
temp=data; \>=YxB q
} 4_.k Q"'DH
int i1=l; G0s:Dum
int i2=mid+1; IPxfjBC+J
for(int cur=l;cur<=r;cur++){ ^/n[5@6H
if(i1==mid+1) ^YIOS]d>8#
data[cur]=temp[i2++]; Bhq(bV
else if(i2>r) ,t+ATaOF
data[cur]=temp[i1++]; peqFa._W
else if(temp[i1] data[cur]=temp[i1++]; pO+1?c43
else ^LU[{HZV
data[cur]=temp[i2++]; *VlYl"
} (Z"Xp{u
} :s'%IGy>:
Na~_=3+a
} Fcr@Un'
j=AJs<
改进后的归并排序: G>RYQ{O
\7j)^
package org.rut.util.algorithm.support; Awh"SUOh0
\~)573'
import org.rut.util.algorithm.SortUtil; Ez$5wY^J
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/** #wjBMR%
* @author treeroot Ys_YjlMIbl
* @since 2006-2-2 Gj ^bz'2
* @version 1.0 _uu:)%
*/ $Tur"_`I;
public class ImprovedMergeSort implements SortUtil.Sort { VDPN1+1*
*(scSC>
private static final int THRESHOLD = 10; v4zd
x)
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/* m5p~>]}fYF
* (non-Javadoc) ;Pa(nUE@
* OWjZ)f/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $"FdS,*qKl
*/ W^N"y&
public void sort(int[] data) {
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int[] temp=new int[data.length]; 1%@~J\qF
mergeSort(data,temp,0,data.length-1); LX fiSM{o
} JgB# EoF
l =yHx\
private void mergeSort(int[] data, int[] temp, int l, int r) { % KA/
int i, j, k; C#~MR+;
int mid = (l + r) / 2; (6BCFl:/Q<
if (l == r) g=C<E2'i*
return; Xu_<4
if ((mid - l) >= THRESHOLD) 6\3k0z
mergeSort(data, temp, l, mid); K*Jtyy}r
else QRlzGRueR&
insertSort(data, l, mid - l + 1); 2f!oA~|2
if ((r - mid) > THRESHOLD) lz (,;I'x
mergeSort(data, temp, mid + 1, r); re!8nuBsA
else DH
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insertSort(data, mid + 1, r - mid); >u)ZT
^JtHTLHL=
for (i = l; i <= mid; i++) { I{zE73
temp = data; 'u[o`31.
} ?i~/gjp
for (j = 1; j <= r - mid; j++) { f4S@lyYF
temp[r - j + 1] = data[j + mid]; uC(S`Q[Bg
} 2]9<%-=S
int a = temp[l]; *?D2gaCta
int b = temp[r]; 5uo(z,WLR
for (i = l, j = r, k = l; k <= r; k++) { y.:-
if (a < b) { h!K2F~i{P
data[k] = temp[i++]; AfN
a = temp; ]7t\%_
} else { qm=F6*@}
data[k] = temp[j--]; -^H5z+"^
b = temp[j]; z8|9WZ:
} f*vk1dS:*3
}
_CJr6Evs
} A9UaLSe
{H;|G0tR
/** /JeqoM"x
* @param data -Y=c g;
* @param l 9!HMQ
* @param i +Nbk\%
*/ 0^.4eX:E_
private void insertSort(int[] data, int start, int len) { zXPJ;^Xxa
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 'lsq3!d.
} $a*Q).^
} ^Pg
YP
} pt%~,M _
} 7]xz8t
sq(Ar(L<
堆排序: >?W;>EUH
_K}_h\e.
package org.rut.util.algorithm.support; OO\biYh o
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import org.rut.util.algorithm.SortUtil; RrU~"P1C
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/** K'5sn|)
* @author treeroot @VC9gdO/
* @since 2006-2-2 B%rr}Ro1e
* @version 1.0 8pL>wL
&C
*/ hW!@$Ph
public class HeapSort implements SortUtil.Sort{ @z$pPo0fW
&Wv`AoV
/* (non-Javadoc) 4R*<WdT(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kYA'PW/[)
*/ YNgR1:l
public void sort(int[] data) { _
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MaxHeap h=new MaxHeap(); `k{ ff
h.init(data); @t;O"q'|
for(int i=0;i h.remove(); {uwk[f{z
System.arraycopy(h.queue,1,data,0,data.length); J'&B:PZObB
} t`8e#n 9
=O3I[
private static class MaxHeap{ ^I'Lw
AYPf)K;%
void init(int[] data){ 'tV"^KQHI
this.queue=new int[data.length+1]; $-fj rQ
for(int i=0;i queue[++size]=data; M~z(a3@[V
fixUp(size); 4-d99|mv
} ,LW(mdIe(
} HzG~I8o(d
DNm7z[t{
private int size=0; Yn$>QS 4
iUxDEt[t*
private int[] queue; lN)Y
VO @
4A6
public int get() { C:s^s
return queue[1]; Wp7@
} :@QK}qFP
anz9lGG#
public void remove() {
M\y~0uZ
SortUtil.swap(queue,1,size--); *fQ?A|l!x
fixDown(1); a_ 9 |xI
} 3lLW'g&=
file://fixdown GLaZN4`
private void fixDown(int k) { \~z?PA.$
int j; %2Xus9;k#
while ((j = k << 1) <= size) { 0gv3v@QO
if (j < size %26amp;%26amp; queue[j] j++; c#\ah}]Vo
if (queue[k]>queue[j]) file://不用交换 M!&_qj&N,
break; eN<>#:`
SortUtil.swap(queue,j,k); XQ0#0<
k = j; kwDh|K
} 'B:Z=0{>N
} r&%gjqt
private void fixUp(int k) { teq^xTUF[
while (k > 1) { _XY`UZ
int j = k >> 1; 0$xK
if (queue[j]>queue[k]) 5T$9'5V7
break; xUiWiOihr6
SortUtil.swap(queue,j,k); #sz]PZ\
k = j; 9atjK4+o
} g{g`YvLu^
} + AcKB82
QQ^Gd8nQ
} G8^0^@o
K;<NBnH
} ShL1'Z}^{
3iu!6lC
SortUtil: m%e^&N#%6r
A0cM(w{7_
package org.rut.util.algorithm; ffmG~$Yh_
XPHQAo[(s
import org.rut.util.algorithm.support.BubbleSort; @!z$Sp=
import org.rut.util.algorithm.support.HeapSort; +8LM~voB
import org.rut.util.algorithm.support.ImprovedMergeSort; Nk lz_]
import org.rut.util.algorithm.support.ImprovedQuickSort; #d}0}7ue
import org.rut.util.algorithm.support.InsertSort; nwa\Lrh
import org.rut.util.algorithm.support.MergeSort; c[(yU#@
import org.rut.util.algorithm.support.QuickSort; &ui:DZAxj|
import org.rut.util.algorithm.support.SelectionSort; MxM](ew~7
import org.rut.util.algorithm.support.ShellSort; 8yHq7=
:[y]p7;{f
/** :`:xP
* @author treeroot #5'c\\?Q
* @since 2006-2-2 ,bB( 24LD
* @version 1.0 (\Rwf}gyR
*/ *0=fT}&!
public class SortUtil { >]>0KQfO
public final static int INSERT = 1; *hv=~A
$q
public final static int BUBBLE = 2; 2-B6IPeI
public final static int SELECTION = 3; Oq #o1>
public final static int SHELL = 4; 5Z*
b(R
public final static int QUICK = 5; jK3giT
public final static int IMPROVED_QUICK = 6; Qy4X#wgD
public final static int MERGE = 7; Wr]O
public final static int IMPROVED_MERGE = 8; Na\3.:]z
public final static int HEAP = 9; X}3P1.n:
_L$)2sl1R
public static void sort(int[] data) { 2~vo+ng
sort(data, IMPROVED_QUICK); eeZIa`.sX
} i?ZA x4D
private static String[] name={ 6{5q@9F
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" W\HLal
}; ^$e0t;W=
+2-
qlU
private static Sort[] impl=new Sort[]{ v2IEJ
new InsertSort(), ?g5iok {
new BubbleSort(), V]r hr
new SelectionSort(), P;j&kuW|zL
new ShellSort(), pNP_f:A|
new QuickSort(), EY
So=
new ImprovedQuickSort(), r])Z9bbi
new MergeSort(), 3 t/ R 2M
new ImprovedMergeSort(), x:p}w[WM
new HeapSort() DYc.to-
}; OWqrD@
NPS.6qY
public static String toString(int algorithm){ iOl%-Y
return name[algorithm-1]; D)y{{g*Lnm
} g8KY`MBnC&
>J.Qm0TY(
public static void sort(int[] data, int algorithm) { Dh2#$[/@1
impl[algorithm-1].sort(data); nHnk#SAAu
} Y=9qJ`q
hXNH"0VCV
public static interface Sort { itw{;j
public void sort(int[] data); `Uv)Sf{
} ;8BA~,4l
]\7lbLv
public static void swap(int[] data, int i, int j) { #hpIyy%n
int temp = data; `N$!s7M
data = data[j]; z*RSMfRW
data[j] = temp; AfN&n= d K
} :VJV 5f{
} 8[oYZrg