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。 q4IjCu+
插入排序: BZ'y}Zu*
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package org.rut.util.algorithm.support; WLj_Zo*^x
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import org.rut.util.algorithm.SortUtil; LeRh(a`=$
/** lw/
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* @author treeroot 4*ty&s=5OJ
* @since 2006-2-2 'amex
* @version 1.0 {F{[!.
*/ @Ig,_i\UY:
public class InsertSort implements SortUtil.Sort{ &55uT;7] a
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/* (non-Javadoc) N;Gf,pE
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YM,D`c[pX
*/ !Z9ikn4A
public void sort(int[] data) { 1<Ztk;$A
int temp; []]LyWk
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); hzf}_1
} , K"2tb
} S)AE
} \)6?u_(u
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} KG./<"c
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冒泡排序: (}7o
a9Q<
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package org.rut.util.algorithm.support; 4j=@}!TBt
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import org.rut.util.algorithm.SortUtil; |H|eH~.yg&
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/** V[2<ha[n>
* @author treeroot 14)kKWG
* @since 2006-2-2 <pa];k(IQL
* @version 1.0 8aM%
9OU
*/ SUQ}^gn]
public class BubbleSort implements SortUtil.Sort{ 66y ,{t
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/* (non-Javadoc) !nD[hI8P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oCru 5F
*/ $@
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public void sort(int[] data) { (^OC%pc
int temp; 6T'43h. :
for(int i=0;i for(int j=data.length-1;j>i;j--){ 3By>t!~Q
if(data[j] SortUtil.swap(data,j,j-1); "9Fv!*<-W
} @0x.n\M_
} tGy%n[ \
} cqU/Y_%l'
} \=:g$_l
;U:o'9^9T
} zYl+BM-j,6
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选择排序: 1oVD Oo
uC$4TnoQx.
package org.rut.util.algorithm.support; {&AT}7
xN~<<PIZ
import org.rut.util.algorithm.SortUtil; b|pNc'u:Cn
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/** #JT%]!
* @author treeroot UqQZ
A0e
* @since 2006-2-2 (h(ZL9!
* @version 1.0 q|Tk+JH{5
*/ TbUkqABm
public class SelectionSort implements SortUtil.Sort { |D_n4#X7u
OsuSx^}
/* B 0fo[Ev
* (non-Javadoc) U},W/g-
* %li{VDb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K`mxb}
*/ !"qEB2r
public void sort(int[] data) { gM/_:+bT>P
int temp; BqJrL/(
for (int i = 0; i < data.length; i++) { zqEZ+|c=
int lowIndex = i; jI pcMN<
for (int j = data.length - 1; j > i; j--) { {>qrf:
if (data[j] < data[lowIndex]) { K^p"Z$$
lowIndex = j; !i lDR<
} \$++.%0
} _rWXcK3cjr
SortUtil.swap(data,i,lowIndex); tbt9V2U:"n
} 63\>MQcLy
} ,kuFTWB
HH7gT
} cyn]>1ZM
JSP8Lu"n
Shell排序: >L3p qK
&5CeRx7%
package org.rut.util.algorithm.support; @n y{.s+
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import org.rut.util.algorithm.SortUtil; '3,JL!
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/** 2yg'?tpj
* @author treeroot A=>6$L];'
* @since 2006-2-2 Y+PxV*"a
* @version 1.0 ?q8g<-?
*/ _-nN(
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public class ShellSort implements SortUtil.Sort{ |6G5
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/]UNN~(
/* (non-Javadoc) kUBHK"}K
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D.JVEKLkU
*/ _34YH 5
public void sort(int[] data) { _25]>D$
for(int i=data.length/2;i>2;i/=2){ 2QD
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for(int j=0;j insertSort(data,j,i); 8TM=AV
} M%LwC/h:,
} -&^( T
insertSort(data,0,1); Y\2>y"8>$x
} Fgq*3t
;(Va_
/** ",oUVl
* @param data gI$`d?[0{
* @param j RB@gSHOc?
* @param i YtKX\q^.
*/ J*k=|+[
private void insertSort(int[] data, int start, int inc) { LA3,e (e
int temp; 745PCC'FK
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 0|k[Wha#
} ~H."{
} /R?uxhV
} yr DYw T
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} MH(g<4>*
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快速排序: _)\,6| #
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package org.rut.util.algorithm.support; /v<8x?=
b .@dUuKz-
import org.rut.util.algorithm.SortUtil; p{GDW_
LB0=V0|
/** Hc3/`.nt
* @author treeroot }e|]G,NZO
* @since 2006-2-2 bm|8Jbsb&
* @version 1.0 dRC+|^rSC
*/ x=+H@YO\
public class QuickSort implements SortUtil.Sort{ ?`iBp+iBv
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/* (non-Javadoc) -I<`!kH*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6n g9 o6
*/ wEqCuhZ
public void sort(int[] data) { Z0^do
quickSort(data,0,data.length-1); j(N9%/4u
} G(e?]{(
private void quickSort(int[] data,int i,int j){ QJ'C?hn
int pivotIndex=(i+j)/2; 1EB`6_>y
file://swap eGg#=l=
SortUtil.swap(data,pivotIndex,j); \6L=^q=
WR%iUO40
int k=partition(data,i-1,j,data[j]); b9jm=U
SortUtil.swap(data,k,j); =@ RVLml
if((k-i)>1) quickSort(data,i,k-1); Gd 9B
if((j-k)>1) quickSort(data,k+1,j); J(GLPC O$K
*O2j<3CHf
} Vh&KfYY
/** \v_(*
* @param data $Vh82Id^
* @param i kdq55zTc<6
* @param j 9wzYDKN}
* @return j/\XeG>
*/ =<icHt6s
private int partition(int[] data, int l, int r,int pivot) { N\$6R-L
do{ nXjUTSGa)
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); `MS=/x E
SortUtil.swap(data,l,r); HF:PF"|3
} $fO*229As
while(l SortUtil.swap(data,l,r); J.(_c'
r
return l; ,GlK_-6>
} f
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} 7085&\9
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改进后的快速排序: YXEZ&$e'
jXQ_7
package org.rut.util.algorithm.support; Q)/q h;Ru
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import org.rut.util.algorithm.SortUtil; ZVL0S{V-mh
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/** nEYJ?_55
* @author treeroot =W=%!A\g
* @since 2006-2-2 82<!b]^1
* @version 1.0 IYFA>*Es
*/ L
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public class ImprovedQuickSort implements SortUtil.Sort { $Z4p$o
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private static int MAX_STACK_SIZE=4096; @\a- =
private static int THRESHOLD=10; z&8#1'
/* (non-Javadoc) m,b<b91
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !ibp/:x
*/ ]cD!~nJ
public void sort(int[] data) { U+z&jdnhDR
int[] stack=new int[MAX_STACK_SIZE]; R!=XMV3$PH
r BL)ct
int top=-1; }z[se)s
int pivot; B.o&%5dG
int pivotIndex,l,r; F&Gb[Q&a8
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stack[++top]=0; z'm;H{xf
stack[++top]=data.length-1; nz(OHh!}u
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while(top>0){ n1ICW 9
int j=stack[top--]; )`)cB)s
int i=stack[top--]; 8447hb?W$
KLk37IY2\
pivotIndex=(i+j)/2; :2?du
pivot=data[pivotIndex]; GZ1>]HB>r^
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SortUtil.swap(data,pivotIndex,j); hE;
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file://partition +$%o#~
l=i-1; |qBo*OcO
r=j; f-Sb:O!V
do{ 7}Gy%SJ`
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); a^22H
SortUtil.swap(data,l,r); <X: 9y
} k,?k37%T]
while(l SortUtil.swap(data,l,r); )Z62xK2
SortUtil.swap(data,l,j); 76
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if((l-i)>THRESHOLD){ c9Cp!.#*E
stack[++top]=i; &0
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stack[++top]=l-1; `0L!F"W
} DV.m({?
if((j-l)>THRESHOLD){ +iXA|L9=
stack[++top]=l+1; 5yry$w$G)
stack[++top]=j; <+6)E@Y
} "G<^@v9
^P[-HA|
} p%}oo#%J
file://new InsertSort().sort(data); ZY83,:<
insertSort(data); *_ "j"{
} pvX\kX3}
/** 6,!]x>B
* @param data )msqt!Ev
*/ :5ji.g* 0
private void insertSort(int[] data) { r!;NH3 *
int temp; !a
/
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); O:1YG$uKa
} B"G;"X
} k'm!|
} HxkhlNB
spJB6n(
} #q%&,;4
c(o8uWn
归并排序: oM< 9]jK}
IkD\YPL;
package org.rut.util.algorithm.support; .7oz
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import org.rut.util.algorithm.SortUtil; o0AREZ+I
rt f}4.
/** 291v
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* @author treeroot <jxTI%'f59
* @since 2006-2-2 Up8#Nz
T
* @version 1.0 NKRNEq!
*/ 5{{u #W%=
public class MergeSort implements SortUtil.Sort{ gzeG5p
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/* (non-Javadoc) GR/
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 90Q}9T\
*/ hEDj"`Px
public void sort(int[] data) { 7Ij'!@no
int[] temp=new int[data.length]; pZXva9bE
mergeSort(data,temp,0,data.length-1); qPWYY
} #\fApRL
iMF:~H-Yq#
private void mergeSort(int[] data,int[] temp,int l,int r){ z55P~p
int mid=(l+r)/2; H1+G:TM
if(l==r) return ; sq*sb dE
mergeSort(data,temp,l,mid); kFeuKSa^d
mergeSort(data,temp,mid+1,r); hMdsR,Iq
for(int i=l;i<=r;i++){ OD{Rh(Id
temp=data; h" j{B
} A07FjT5w8
int i1=l; 9"&HxyOfX
int i2=mid+1; z[l17+v
for(int cur=l;cur<=r;cur++){ ;+cZS=
if(i1==mid+1) w
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data[cur]=temp[i2++]; kZfO`BVL
else if(i2>r) <wa}A!fu
data[cur]=temp[i1++]; iB{O"l@w
else if(temp[i1] data[cur]=temp[i1++]; i,,U D
else nXXyX[c4e
data[cur]=temp[i2++]; Y*J,9
} ,myl9s
} EFhe``
=Bl#CE)X
} H~fZA)W 4Y
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改进后的归并排序: }]kzj0m
F?3a22Zg#
package org.rut.util.algorithm.support; 7h,SX]4Q
jf@#&%AC9
import org.rut.util.algorithm.SortUtil; FK0nQ{uB"
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/** YaDr6)
* @author treeroot Sky!ZN'I
* @since 2006-2-2 os"o0?
* @version 1.0 L=?Yc*vg
*/ }m(u oT~
public class ImprovedMergeSort implements SortUtil.Sort { &*r YY\I
t\S}eoc
private static final int THRESHOLD = 10; QXniWJJ
[.;VCk)0x
/* ~}(}:#>T
* (non-Javadoc) M{Wla7
* ?=-18@:.ss
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Od)]FvO
*/ )Yy`$`
public void sort(int[] data) { ?tSFM:9PU
int[] temp=new int[data.length]; 5'Y @c
mergeSort(data,temp,0,data.length-1); }qRYXjS
} bR(rZu5
5e6 f)[}
private void mergeSort(int[] data, int[] temp, int l, int r) { skf7Si0z
int i, j, k; &dH/V-te
int mid = (l + r) / 2; y>UM~E
if (l == r) _}8O15B|
return; PH^AT<U:T
if ((mid - l) >= THRESHOLD) !D!Q]M5oU
mergeSort(data, temp, l, mid); eE '\h
else +m^ gj:yL
insertSort(data, l, mid - l + 1); QQj)"XJ29
if ((r - mid) > THRESHOLD) ?v\A&d
mergeSort(data, temp, mid + 1, r);
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else amK"Z<V F
insertSort(data, mid + 1, r - mid); TkM8GK-3
cR*D)'/tl
for (i = l; i <= mid; i++) { ~K 5eO-
temp = data; X3P~z8_
} 1.6yi];6
for (j = 1; j <= r - mid; j++) { WnyEdYA
temp[r - j + 1] = data[j + mid]; [2"a~o\
} 7o-umZ}8
int a = temp[l]; p HXslmrD
int b = temp[r]; BRLrD/8Le
for (i = l, j = r, k = l; k <= r; k++) { cQ} ,q+GR~
if (a < b) { kl,I.2-
data[k] = temp[i++]; 9LI#&\lba
a = temp; |7LhE+E
} else { .Ks%ar
data[k] = temp[j--]; L'iENZI$
b = temp[j]; tURjIt,I
} j'R{llZW
} kI<;rP1S|
} n6Je5fE
i 3?=up!
/** N =FX3Z
* @param data <b.?G
* @param l 9~/k25P
* @param i >hHjDYjbf
*/ O/Ub{=g
private void insertSort(int[] data, int start, int len) { G:7HL5u
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ry)g<OA
} >4
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} N_Q)AXr)
} WhQK3hnm
} ^cs:S-s
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vCF
堆排序: @ qy
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SaceIV%(
package org.rut.util.algorithm.support; 1zqIB")s>
+m8CN(c
import org.rut.util.algorithm.SortUtil; E!nEB(FD
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/** jeXP|;#Una
* @author treeroot C,r[H5G#
* @since 2006-2-2 a|?&
* @version 1.0 ,<Zu4bww
*/ ,j E'd'$
public class HeapSort implements SortUtil.Sort{ #}Y$+FtO
HqC
1Dkw
/* (non-Javadoc) s\O4D*8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -!V+>.Oh
*/ Hz~?"ts@;
public void sort(int[] data) { :59fb"^$
MaxHeap h=new MaxHeap(); cetHpU,
h.init(data); UVa:~c$U4
for(int i=0;i h.remove(); H2[VZ&Pg
System.arraycopy(h.queue,1,data,0,data.length); 7~&
} r*_z<^d
!8YZ;l
private static class MaxHeap{ k@:M#?(F
Bu_/yKW
void init(int[] data){ y.vYT{^
this.queue=new int[data.length+1]; ^F\RM4|,
for(int i=0;i queue[++size]=data; b* (~8JxZ
fixUp(size); nYy%=B|>
} f4[fXP;A
} @N+ }cej
NN>E1d=
private int size=0; rG[iEY
m-T@Og
private int[] queue; >2vUFq`H
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public int get() { r:N =?X`N
return queue[1]; LL% Aw)Q`
} 1'Sr0
oEd3
?|,dHqh{nM
public void remove() { (dvsGYT|.
SortUtil.swap(queue,1,size--); w8veh[%3n
fixDown(1); H#/ #yVw
} @G'&7-(h*
file://fixdown t"# .I?S0
private void fixDown(int k) { <9f;\+zA
int j; [Ey[A|g
while ((j = k << 1) <= size) { a9LK}xc={
if (j < size %26amp;%26amp; queue[j] j++; }Br=eaY
if (queue[k]>queue[j]) file://不用交换 hSkI]%
break; /Uxp5 b h
SortUtil.swap(queue,j,k); y0}3s)lKv
k = j; fhwJ
} D@W[Nd5MJ
} M$J{clr
private void fixUp(int k) { +>b m~6
while (k > 1) { /6fa
7;
int j = k >> 1; X%X`o%AqC
if (queue[j]>queue[k]) =:fN
break; U~3uu&/r
SortUtil.swap(queue,j,k); 1PGY/c
k = j; 5z/*/F=X
} ,i]X^z5!
} mM#[XKOC<
6&9}M Oc
} [d dKC)tA
uy'I#^Bt
} ;r8<
Ed
OKo)p`BX
SortUtil: QH>e_
#!.26RM:P
package org.rut.util.algorithm; RKi11z
DjLSl,Z
import org.rut.util.algorithm.support.BubbleSort; xVnk]:c
import org.rut.util.algorithm.support.HeapSort; )t#>fnN
import org.rut.util.algorithm.support.ImprovedMergeSort; ]`+J!G,
import org.rut.util.algorithm.support.ImprovedQuickSort; U3t$h
import org.rut.util.algorithm.support.InsertSort; ] S0tK
import org.rut.util.algorithm.support.MergeSort; ioW&0?,Ym
import org.rut.util.algorithm.support.QuickSort; Z:(Zy
import org.rut.util.algorithm.support.SelectionSort; ]nIH0k3y
import org.rut.util.algorithm.support.ShellSort; ;9Sb/
^QG;:.3v
/** h4,g pV>t
* @author treeroot MA`.&MA.
* @since 2006-2-2 ~7 w"$H8
* @version 1.0 kO3N.t@n
*/ x&
a<u@[wa
public class SortUtil { M7`iAa.}
public final static int INSERT = 1; B0+r
public final static int BUBBLE = 2; Z>l%:;H
public final static int SELECTION = 3; C<B+! 16
public final static int SHELL = 4; PKjM1wqaG@
public final static int QUICK = 5; H@uDP
public final static int IMPROVED_QUICK = 6; -prc+G,qyp
public final static int MERGE = 7; j+eto'
public final static int IMPROVED_MERGE = 8; GbB:K2
public final static int HEAP = 9; zNo>V8B(
1CmjEAv%/
public static void sort(int[] data) { R3bHX%T
sort(data, IMPROVED_QUICK); H13kNhV9
} (O!Q[WLS
private static String[] name={ dje}CbZ
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" \+#>XDD
}; (5/>arDn
xJ rKH
private static Sort[] impl=new Sort[]{ CT0 ~
new InsertSort(), ^yFtL(x,
new BubbleSort(), Ze.\<^-t
new SelectionSort(), aj`_*T"A
new ShellSort(), z)_h"y?H{%
new QuickSort(), /^pPT6
new ImprovedQuickSort(), A.5`+
new MergeSort(), i-FsA
new ImprovedMergeSort(), Vh}F#~BrI
new HeapSort() H&*KpOL
}; qP5'&!s&!
BG9.h!
public static String toString(int algorithm){ h0z>dLA#2
return name[algorithm-1]; JwNB)e
D
} WV&grG|
V48o+ O
public static void sort(int[] data, int algorithm) { PRi1 `%d
impl[algorithm-1].sort(data); #I9hKS{
} gp(: o$
;&} rO.0
public static interface Sort { ^Q9!DF m
public void sort(int[] data); Sg+0w7:2
} b[Qe} `W
^rh{
public static void swap(int[] data, int i, int j) { [XbNZ6
int temp = data; %8c2d
data = data[j]; M"\j7(
data[j] = temp; f=--$o0U~
} lL;SP&
} J/xbMMb