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。 h}k/okG
插入排序: 9"=1 O
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package org.rut.util.algorithm.support; $X9`~Sv _
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import org.rut.util.algorithm.SortUtil; P@m_tA%
/** S<f]Y4A&
* @author treeroot |(Bc0sgw}
* @since 2006-2-2 3Vu_-.ID
* @version 1.0 $fhb-c3
*/ r{V=)h
public class InsertSort implements SortUtil.Sort{ K|q5s]4I
0.9%m7.m
/* (non-Javadoc) f8T6(cA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VuOZZ7y
*/ CBqeO@M
public void sort(int[] data) { ^ *{:;F@
int temp; 1gA9h-'w
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 't+
J7
} V6:S<A
} ,-11w7y\
} J 8z|ua
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} [f^:V:){
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冒泡排序: }, < dGmkx
@2LpI*]C
package org.rut.util.algorithm.support; s\)0f_I
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import org.rut.util.algorithm.SortUtil; 7wivu*0
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/** m5wfQ_}}ss
* @author treeroot y h
* @since 2006-2-2 (Q_J{[F
* @version 1.0 ;
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*/ K/Q%tr1W0
public class BubbleSort implements SortUtil.Sort{ UP18?uM
>tmv3_<=
/* (non-Javadoc) A)2eo<ij4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ej\Me
*/ _M;n.?H
public void sort(int[] data) { ;.O#|Z[
int temp; CNo'qlvF5N
for(int i=0;i for(int j=data.length-1;j>i;j--){ qT<OiIMj^
if(data[j] SortUtil.swap(data,j,j-1); B<99-7x3
} S2TyNZbQ
} x6i7x"
} <sALA~p|0
} 7Rba@ cs9
Xjy5Yj
} |6cz r
PQ u_]cXI
选择排序: eSqKXmH[m
+b =X~>vZ
package org.rut.util.algorithm.support; 3Kx&+
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import org.rut.util.algorithm.SortUtil; tJ"8"T#6Vr
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/** 5^,"Ve|
* @author treeroot /IO<TF(X
* @since 2006-2-2 \]j{
* @version 1.0 nY>UYSv
*/ GOKca%DT=
public class SelectionSort implements SortUtil.Sort { ,2|(UTv
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/* mMNT.a
* (non-Javadoc) XF6ed
* 'n>v}__&|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sjZ@}Vk3b
*/ c:J;Q){Xz
public void sort(int[] data) { ii3{HJ*C
int temp; T J!d7
for (int i = 0; i < data.length; i++) { A~@u#]]<n
int lowIndex = i; (~6D`g`B
for (int j = data.length - 1; j > i; j--) { ^$N}[1
if (data[j] < data[lowIndex]) { U,tl)(!@Q-
lowIndex = j; bAUruTn
} O`;e^PhN
} [Yq*DkW
SortUtil.swap(data,i,lowIndex); #OQT@uF!
} fEWXC|"
} KW&vX%i(.
Z[,A>tJ
} ?;bsg9
JO3x#1~;_
Shell排序: 33M10
1X{6
SHAC(3o/e
package org.rut.util.algorithm.support; LX!MDZz
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import org.rut.util.algorithm.SortUtil; 8l50@c4UF~
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/** Rv/=bY
* @author treeroot $:RP tG
* @since 2006-2-2 RT`jWWh*Lo
* @version 1.0 DjMhI_Yu
*/ ]c+HD*
public class ShellSort implements SortUtil.Sort{ Wx`|u
[T6MaP?
/* (non-Javadoc) 7m<;"e)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tO@n3"O
*/ Xi:y3 5q
public void sort(int[] data) { -4=\uvYh
for(int i=data.length/2;i>2;i/=2){ Dcep^8'
for(int j=0;j insertSort(data,j,i); U2DE zr
} ,S%DHT
} (6Y.|u]bq
insertSort(data,0,1); EOn[!
} Pf,lZU?f
?a]1$>r
/** OgOs9=cE{
* @param data q83!PI
* @param j Y)ig:m]#
* @param i (2l?~CaK
*/ @hG]Gs[,o
private void insertSort(int[] data, int start, int inc) { ;bMmJ>[l-
int temp; `{B<|W$=
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); b~u53
} Qp5YS
} \Wn0,%x2
} $Lc-}m9n
"Yy)&zKr
} "?f_U/+D<
.zQ'}H1.C
快速排序: 'k1vV
U'Mxf'q
package org.rut.util.algorithm.support; GX@=b6#-
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import org.rut.util.algorithm.SortUtil; 6$ \69
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/** 4*Y`Pn@
* @author treeroot 0%b!ARix
* @since 2006-2-2 [Q:C\f]
* @version 1.0 }%lk$g';
*/ 8IQqDEY^
public class QuickSort implements SortUtil.Sort{ j}F;Bfq!
^dP]3D1
@
/* (non-Javadoc) 8_h:_7e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G>?'b
*/ }
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public void sort(int[] data) { Pgh)+>ON
quickSort(data,0,data.length-1); /8Xd2-
} {@*l ,[,5-
private void quickSort(int[] data,int i,int j){ U3rpmml
int pivotIndex=(i+j)/2; ^a #
file://swap 032PR;]
SortUtil.swap(data,pivotIndex,j); 7c>{og6
$:!L38[7$
int k=partition(data,i-1,j,data[j]); 9X ^D(
SortUtil.swap(data,k,j); *{1]b_<
if((k-i)>1) quickSort(data,i,k-1); 71wtO
if((j-k)>1) quickSort(data,k+1,j); o7^u@*"F
f)9{D[InM^
} rpn&.#KS
/** 7Pp~)Kq=
* @param data K=Y{iHn
* @param i b8~7C4
* @param j 'j oE-{
* @return {+@M!
*/ /`H{n$
private int partition(int[] data, int l, int r,int pivot) { 34s>hm=0.
do{ d.:.f_|
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); a$2WL g,
SortUtil.swap(data,l,r); VcpN
PU6
} LP:U6 Z
while(l SortUtil.swap(data,l,r); Ew$-,KC[
return l; bG&vCH;}%
} c8}jO=/5+
nX\Q{R2
} A>Y!d9]ti
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改进后的快速排序: ^ygh[.e,
RAY.]:}jr
package org.rut.util.algorithm.support; =qy{8MsjA
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import org.rut.util.algorithm.SortUtil; =! P
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/** oaMh5FPy
* @author treeroot kXY p.IVA
* @since 2006-2-2 h$#zuqm
* @version 1.0 g'nN#O
*/ wfY]J0l
public class ImprovedQuickSort implements SortUtil.Sort { ,`.`}'
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private static int MAX_STACK_SIZE=4096; ^/_1y[j
private static int THRESHOLD=10; .In8!hjYy4
/* (non-Javadoc) <h[l)-86
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u(b Pdf@kz
*/ 5l,Q=V^@l
public void sort(int[] data) { yE>f.|(
int[] stack=new int[MAX_STACK_SIZE]; $,DX^I%!
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int top=-1; ,W:Bh$%
int pivot; K.I\E
int pivotIndex,l,r; hJasnY7
e,rCutA)
stack[++top]=0; QCVwslj,K
stack[++top]=data.length-1; ppXt8G3%x
w?Nx^)xX
while(top>0){ q@8j[15
int j=stack[top--]; Yt#e[CYnu
int i=stack[top--]; 81&5g'
r5(-c]E7
pivotIndex=(i+j)/2; +t`QHvxv
pivot=data[pivotIndex]; W
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1 6G/'Hb
SortUtil.swap(data,pivotIndex,j); 9<Kc9Z
lL]8~3b
file://partition &bw
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l=i-1; ?~fuMy B
r=j; hY^-kdQ>M
do{ {nyVC%@Y
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); s\#eD0|
SortUtil.swap(data,l,r); nd?R|._R
} (%^Bp\.02!
while(l SortUtil.swap(data,l,r); Lf} @v
SortUtil.swap(data,l,j); -4!i(^w[m/
?Rg8u
if((l-i)>THRESHOLD){ B}A7Usm
stack[++top]=i; Bvy(vc=UDW
stack[++top]=l-1; q" %;),@
} "i3Q)$"S
if((j-l)>THRESHOLD){ p@x1B
&Z
stack[++top]=l+1; hp6%zUR
stack[++top]=j; wU =@,K
} 2 bQC2
{S;/+X,
} }iF"&b0n"
file://new InsertSort().sort(data); vJE>H4qPmD
insertSort(data); JJe?Zu\
} %U$PcHOo
/** 2gC.Z:}
* @param data tE>hj:p
*/ 5Zdxn>
private void insertSort(int[] data) { h=Xr J
int temp; 2~BId&]
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3cztMi
} ?]bZ6|;2
} I%q&4L7pj
} 7
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?a]uyw,
} !`-/E']/
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归并排序: hc4W|Ofj
ND|!U#wMNV
package org.rut.util.algorithm.support; ZZXQCP6]
<O#/-r>2
import org.rut.util.algorithm.SortUtil; 1]lm0bfs
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/** .5PcprE/
* @author treeroot ixFuqPij
* @since 2006-2-2 &%/kPF~<
* @version 1.0 ;v? !Pml2k
*/ Y)=89s&t
public class MergeSort implements SortUtil.Sort{ E'J| p7
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/* (non-Javadoc) aykNH>#Po
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m+J3t@$
*/ 8>sToNRNe
public void sort(int[] data) { BEv>?T
0
int[] temp=new int[data.length]; oU.LYz_
mergeSort(data,temp,0,data.length-1); !Xbr7:UPN1
} C$1}c[
k^IC"pUc
private void mergeSort(int[] data,int[] temp,int l,int r){ Jm+hDZrW
int mid=(l+r)/2; ,&\uuD&.@
if(l==r) return ; Yy"05V.
mergeSort(data,temp,l,mid); ^|(w)Sy
mergeSort(data,temp,mid+1,r); liUrw7,
for(int i=l;i<=r;i++){ [foZO&+!
temp=data; =O)dHY}
} !PzlrH)M=p
int i1=l; u!X$M?D4
int i2=mid+1; 4?AggqW
for(int cur=l;cur<=r;cur++){ [ Yzh(a8
if(i1==mid+1) coxMsDs
data[cur]=temp[i2++]; #.(6.Li
else if(i2>r) J=gerdIk
data[cur]=temp[i1++]; lF\oEMd*
else if(temp[i1] data[cur]=temp[i1++]; h>6'M
else d2x|PpmH
data[cur]=temp[i2++]; &.Jp,Xt)
} dfDz/sD*
} [kyF |3k~
CjtXU=}A
} /8GgEW9Q~G
IR+dGqIjZb
改进后的归并排序: >!OD[9
>HUU`= SC
package org.rut.util.algorithm.support; \I@=EF- &
5Z 7 <X2
import org.rut.util.algorithm.SortUtil; N%A[}Y0;MW
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/** :/BU-SFK^
* @author treeroot .]qj];m
* @since 2006-2-2 $f-f0t'
* @version 1.0 B?nQUIb:
*/ }'mBqn
public class ImprovedMergeSort implements SortUtil.Sort { A3p@hQl
-$E_L:M
private static final int THRESHOLD = 10; 8}\Lt
/.<T^p@\&
/* z\,g %u41
* (non-Javadoc) 1}C|Javkn
* /3!KfG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u6AReL'f
*/ IRemF@
public void sort(int[] data) { <|NP!eMsw8
int[] temp=new int[data.length]; 4eym$UWw
mergeSort(data,temp,0,data.length-1); ;[]{O5TB
} BpL,<r,
/#z5bo
private void mergeSort(int[] data, int[] temp, int l, int r) { G SXe=?
int i, j, k; ISI\<qx
int mid = (l + r) / 2; 8'Z#sM^E
if (l == r) " r!O9X6
return; !e?GS"L~
if ((mid - l) >= THRESHOLD) O!}TZfC
mergeSort(data, temp, l, mid); (bxSN@hp2
else L\Uf+d:&}G
insertSort(data, l, mid - l + 1); =h?WT*
if ((r - mid) > THRESHOLD) y]B?{m``6
mergeSort(data, temp, mid + 1, r); 7u!i)<pn
else ){|Bh3XV
insertSort(data, mid + 1, r - mid); *.0}3
1MH[-=[Q
for (i = l; i <= mid; i++) { .v36xX K(
temp = data; _uuxTNN0x*
} \ %Er%yv)
for (j = 1; j <= r - mid; j++) { (c ?OcwTH
temp[r - j + 1] = data[j + mid]; \f6SA{vR|
} %vvA'WG
int a = temp[l]; I
@TR|
int b = temp[r]; JzJS?ZF
for (i = l, j = r, k = l; k <= r; k++) { QAigbSn]
if (a < b) { b-8{bP]n
data[k] = temp[i++]; _ji"##K
a = temp; n*6Oa/JG7
} else { cv(9v =](
data[k] = temp[j--]; EELS-qA
b = temp[j]; ,y}?Z8?63
} 7q<2k_3<
} &13qlc6
} @vdBA hXk
'c3P3`o,;
/** UI}v{05]
* @param data xJtblZ1sr
* @param l Z,%^BAJ
* @param i 6]yYiz2Xn
*/ l2"{uCcA
private void insertSort(int[] data, int start, int len) { 96UL](l(`
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1);
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} >4>!zZ
} ld8 E!t[
} S>isWte
} !63p?Q=
7U>Xi'?
堆排序: tLXwszR0r
#T1py@b0zA
package org.rut.util.algorithm.support; QFMR~6 ?
F!*u}8/_!
import org.rut.util.algorithm.SortUtil; duCxYhh|
j+He8w-4
/** pj:s+7"t
* @author treeroot ?.d6!vA
* @since 2006-2-2 \ s^a4l2
* @version 1.0 q(sEN!^L`
*/ =e2|:Ba!
public class HeapSort implements SortUtil.Sort{ sdF;H[
T8( \:v
/* (non-Javadoc) (3Hz=k_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R57>z`;
*/ @> n7
public void sort(int[] data) { kR2kV"-l
MaxHeap h=new MaxHeap(); "]\sw"zO?
h.init(data); D#}t)$"
for(int i=0;i h.remove(); n qSjP5
System.arraycopy(h.queue,1,data,0,data.length); ME"B1Se\
} n1+1/
?.tnaE
private static class MaxHeap{ F!DDlYUz.
LT7C>b
void init(int[] data){ -FRMal4Pg0
this.queue=new int[data.length+1]; |[apLQ6
for(int i=0;i queue[++size]=data; h"Qp e'D}
fixUp(size); &[u%ZL
} )Qe<XJH!
} 77D>;90>?
jFbj)!;
private int size=0; ;}v#hKC~
{~J'J $hn8
private int[] queue; w<=?%+n
d:C|laZHn
public int get() { 1t&LNIc|^
return queue[1]; a6\0XVU
} N 4Kj)E@
2d),*Cvf
public void remove() { nn[OC=cDN
SortUtil.swap(queue,1,size--); jeb]3i=pw
fixDown(1); ]-ad\PI$
} c>I(6$
file://fixdown %d-|C.
private void fixDown(int k) { L'(ei7Z
int j; Cngi5._Lb
while ((j = k << 1) <= size) { PkM]jbLe8
if (j < size %26amp;%26amp; queue[j] j++; ^pgVU&-~]/
if (queue[k]>queue[j]) file://不用交换 n~ w.\939@
break; v@m2c_,
SortUtil.swap(queue,j,k); Rq`B'G9|c
k = j; P1cI]rriW
} u!4i+7}
} z~8`xn,
private void fixUp(int k) { JZ=ahSi
while (k > 1) { gY!+x=cx0
int j = k >> 1; P){b"`f
if (queue[j]>queue[k]) $?x;?wS0V
break; :g&9v_}&K{
SortUtil.swap(queue,j,k); s{g^K#BoFi
k = j; R( 2,1f=d
} vwF#;jj\
} ,xcm:;&
KHnq%#
} tqok.h
^w|D^F=o
} SZ$~zT;c
K=Q<G:+&V
SortUtil: dgbqMu"
-hy`Np
package org.rut.util.algorithm; %=w@c
o2'^MxKb T
import org.rut.util.algorithm.support.BubbleSort; {"rYlN7,
import org.rut.util.algorithm.support.HeapSort; {&u`d.Lk2p
import org.rut.util.algorithm.support.ImprovedMergeSort; 2!@ER i
import org.rut.util.algorithm.support.ImprovedQuickSort; 79HKfG2+KB
import org.rut.util.algorithm.support.InsertSort; ZMp5d4y5
import org.rut.util.algorithm.support.MergeSort; g>gVO@"b2
import org.rut.util.algorithm.support.QuickSort; py-5 :g}d
import org.rut.util.algorithm.support.SelectionSort; n1Ic[cM}
import org.rut.util.algorithm.support.ShellSort; #_(t46
C!,|Wi2&
/** )By#({O
* @author treeroot M\m6|P
* @since 2006-2-2 ,a6Oi=+>/U
* @version 1.0 ][D/=-
*/ V^S` d8?
public class SortUtil { G q&[T:
public final static int INSERT = 1; |$^a"Yd`9
public final static int BUBBLE = 2; BYuoeN!
public final static int SELECTION = 3; ^RIDC/B=V6
public final static int SHELL = 4; s?Wkh`b
public final static int QUICK = 5; rjaG{ i
public final static int IMPROVED_QUICK = 6; OYYk[r
public final static int MERGE = 7; au+6ookT
public final static int IMPROVED_MERGE = 8; a ]b%v9
public final static int HEAP = 9; "gIjU~'A
$bo,m2)
public static void sort(int[] data) { \I-bZ|^
sort(data, IMPROVED_QUICK); n0
q$/Y.
} PR+L6DT_
private static String[] name={ zWA~0l.2
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" l|jb}9(J
}; i3dV2^O
cXDG(.!n7B
private static Sort[] impl=new Sort[]{ ]ykMh
new InsertSort(), =w,cdU*
new BubbleSort(), KtMD?
new SelectionSort(), V#Pz`D
new ShellSort(), d,V] j-
new QuickSort(), RCC~#bb
new ImprovedQuickSort(), bnZ`Wc*5b
new MergeSort(), b<E0|VW
new ImprovedMergeSort(), C@F3iwTtp
new HeapSort() EJByYk
}; M[:},?ah0
[&MhAzF
public static String toString(int algorithm){ -dO9y=?t
return name[algorithm-1]; .9uw@Eq
} >Y)FoHa+/
i
w(4!,4~
public static void sort(int[] data, int algorithm) { - ]Mbe2;
impl[algorithm-1].sort(data); nW"ml$
} sry`EkS
Om,M8!E
public static interface Sort { w~|z0;hC
public void sort(int[] data); * .P3fVlZ
} (X|`|Y
S(NUuu}S
public static void swap(int[] data, int i, int j) { VT:m!<^
int temp = data; b&g`AnYT
data = data[j]; kN8?.V%Utw
data[j] = temp; x7!YA>
} m&I5~kD
} q% pjY