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。 7cUR.PI#Q
插入排序: s<Ex"+
o\@ A2r3
package org.rut.util.algorithm.support; agU%z:M{
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import org.rut.util.algorithm.SortUtil; n&0mz1rw
/** T.Pklty
* @author treeroot L9{mYA]q
* @since 2006-2-2 `qf\3JT\
* @version 1.0 nc3ltT,R
*/ -uv
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public class InsertSort implements SortUtil.Sort{ <}28=d
@tr&R==([
/* (non-Javadoc) $PatHY@h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'w` SBYQ5
*/ ~t{D5#LVHa
public void sort(int[] data) { 9{)Z5%Kz
int temp; c$,c`H(~
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6\,DnO
} 6[+\CS7Lt
} <CZI7]PM7
} 5T$}Oy1
saGRP}7?
} -TzI>Fz
hsTFAfa'
冒泡排序: }mKGuCoH>
hFsA_x+L;
package org.rut.util.algorithm.support; jzl?e[qPA
aUypt(dv
import org.rut.util.algorithm.SortUtil; .mvB99P{<
x[vpoB+c
/** g(-;_j!=
* @author treeroot Ci]'G>F@"
* @since 2006-2-2 2YL`3cgfb
* @version 1.0 Q3'fz 9v
*/ 0hrCG3k.91
public class BubbleSort implements SortUtil.Sort{ 0V<Aub[${
x r-;,W
/* (non-Javadoc) _7Xd|\Zc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z$9@j2
*/ t[]['Iosd
public void sort(int[] data) { "%{,T
int temp; Tg"'pO
for(int i=0;i for(int j=data.length-1;j>i;j--){ ]LEoOdDN"C
if(data[j] SortUtil.swap(data,j,j-1); 6uu^A9x
} ^y&q5p jj
} Q=d.y&4%
} FX%t
} ^~ Ekg:`
gW%pM{PW
} ! 9d_Gf-
+<S9E'gT3V
选择排序: Wc~3^;U
&?SX4c~?u
package org.rut.util.algorithm.support; J+{Ou rWt
8K|J:[7
import org.rut.util.algorithm.SortUtil; lbQ6
a
AI&qU/}
/** \bU`
* @author treeroot Qo'yS"g<9)
* @since 2006-2-2 ! G*&4V3Mg
* @version 1.0 f=t:[<
)
*/ >F/XZC
public class SelectionSort implements SortUtil.Sort { f"vk# 3
!cRfZ
/* 8{R&EijC
* (non-Javadoc) ?TIV2m^?
* w?kGi>7E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [dl+:P:zc
*/ F(d:t!
public void sort(int[] data) { PXV)NC
int temp; ETM2p1ru0
for (int i = 0; i < data.length; i++) { K@q&HV"'.
int lowIndex = i; j*tk(o}qG
for (int j = data.length - 1; j > i; j--) { bsB},pc
if (data[j] < data[lowIndex]) { _~tm7o+js
lowIndex = j; FXS^^p
P
} cb+l"FI7
} ^:m^E0(H
SortUtil.swap(data,i,lowIndex); RG&I\DTyt
} }-d)ms!
} EbCIIMbe"
K'x4l,rq
} fi=0{
dw~[9oh
Shell排序: ):3MYSqX
*~cqr
package org.rut.util.algorithm.support; v9u<F6
ERF,tLa!
import org.rut.util.algorithm.SortUtil; w'A tf
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/** E_~x==cb
* @author treeroot Yg/}ghF\
* @since 2006-2-2 q7|:^#{av
* @version 1.0 #;`Oj
*/ xZX`%f-
public class ShellSort implements SortUtil.Sort{ W$r^
@c Z\*,T
/* (non-Javadoc) fb23J|"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t\zbEN
*/ u+m4!`
public void sort(int[] data) { _l<mu? "
for(int i=data.length/2;i>2;i/=2){ y=w`w>%
for(int j=0;j insertSort(data,j,i); ?KCivf
} {J2#eiF
} Zb."*zL
insertSort(data,0,1); "#2pT H~
} @}(SR\~N]
_lXt8}:+
/** zDB"r
* @param data dXl]Pe|v
* @param j t)} \9^Uo
* @param i |=O1Hn
*/ RAV^D.
private void insertSort(int[] data, int start, int inc) { '@bJlJB9>
int temp; H8&p<=
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); A;,Dg=FL/
} L?8^aG
} E tx`K5Tr]
} #1[z;Mk0
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B
} p;0 PxL=
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快速排序: fz3lR2~G
}%$OU = T
package org.rut.util.algorithm.support; _42Z={pZZq
F}D3,&9N
import org.rut.util.algorithm.SortUtil; .#0H{mk
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/** 9*\g`fWc}{
* @author treeroot 0oSQY[ht/
* @since 2006-2-2 p>q&&;fe
* @version 1.0 7(C x!Yb
*/ lm$;:Roj*
public class QuickSort implements SortUtil.Sort{ P`EgA
#-{N
Ws\
/* (non-Javadoc) [(ygisqt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H-,TS^W
*/ M\9F:.t=
public void sort(int[] data) { cvfUyp;P
quickSort(data,0,data.length-1); IE;\7r+h
} Qs l80~n_7
private void quickSort(int[] data,int i,int j){ |n`PESf_
int pivotIndex=(i+j)/2; Ux}W&K/?'
file://swap |gv{z"
SortUtil.swap(data,pivotIndex,j); Efx=T$%^&
90fs:.
int k=partition(data,i-1,j,data[j]); >F[GVmC
SortUtil.swap(data,k,j); 3+>OGwfQ
if((k-i)>1) quickSort(data,i,k-1); a8Uk[^5
if((j-k)>1) quickSort(data,k+1,j); uE`r /=4
{q,?<zBzu
} Qdu$Os
/** vd (?$
* @param data [jrqzB
* @param i T@P!L
* @param j 6{=_718l`
* @return vk'rA{x
*/ 8eJE>g1J
private int partition(int[] data, int l, int r,int pivot) { ,q#2:b<E
do{ l^W uS|G[
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ^=+e?F`:{
SortUtil.swap(data,l,r); YJ,*(A18
} (.?ZKL
while(l SortUtil.swap(data,l,r); ^m%52Tm
h
return l; G;s"h%Xw98
} NiA4JgM]v
:,
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} TQc@lR!
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改进后的快速排序: M'2r@NR8
g)R1ObpZ
package org.rut.util.algorithm.support; o=_c2m
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import org.rut.util.algorithm.SortUtil; 3vW4<:Lgy
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/** Kkv<"^H
* @author treeroot g^l RG3a
* @since 2006-2-2 Ur!~<4GO
* @version 1.0 eT[&L @l]b
*/ H0>yi[2f
public class ImprovedQuickSort implements SortUtil.Sort { f~ZEdq8
hw=GR_,
private static int MAX_STACK_SIZE=4096; 89HsPB1"t
private static int THRESHOLD=10; dv!r.
/* (non-Javadoc) ,j178EX
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?djQZ*
*/ opp!0:jS*
public void sort(int[] data) { pRi<cO
int[] stack=new int[MAX_STACK_SIZE]; C6jR=@42Q
zN!j%T.e
int top=-1; ?S tsH
int pivot; 6B6vP%H#
int pivotIndex,l,r; gXy-Mpzp
Ef@,hX
stack[++top]=0; Ck'aHe22'
stack[++top]=data.length-1; !SxG(*u
& mt)d
while(top>0){ pC(sS0J
int j=stack[top--]; y1pu R7
int i=stack[top--]; qP1FJ89H
Vn|1v4U!
pivotIndex=(i+j)/2; +Xy*?5E;C
pivot=data[pivotIndex]; 2SG$LIV 9Y
J7+w4q~cB`
SortUtil.swap(data,pivotIndex,j); \/5RL@X}
|+}G|hx@9
file://partition S6D^3n
l=i-1; gl7|H&&xV
r=j; }]6f+
do{ f p[,C1U
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 3BQ!qO17^d
SortUtil.swap(data,l,r); Q5a)}6-5
} yI3kvh
while(l SortUtil.swap(data,l,r); BRv x[u
SortUtil.swap(data,l,j); T
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1^G{tlA-
if((l-i)>THRESHOLD){ ynwG\V
stack[++top]=i; rs;r
$
stack[++top]=l-1; P_Hv%g
} ig!7BxM)<h
if((j-l)>THRESHOLD){ )r tomp:X
stack[++top]=l+1; o:p
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stack[++top]=j; szmmu*F,U:
} GJA`l8`SQ
cg{AMeW
} S\#1 7.=
file://new InsertSort().sort(data); .iwZ*b{
insertSort(data); Jxl6a:
} r ?m6$
/** oBQm05x"
* @param data >BVoHt~;
*/ e' 9r"<>i
private void insertSort(int[] data) { }}
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int temp; rS8 w\`_
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~O6\6$3b5E
} nH-V{=**
} $XnPwOj
} >3.X?
tJ0NPI56yP
} r 2:2,5_
+^|iZbZKx
归并排序: aSutM
0<p{BL8
package org.rut.util.algorithm.support; R.9V,R5
j2 %^qL
import org.rut.util.algorithm.SortUtil; \cJa;WM>
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/** EHf\L
* @author treeroot `'S0*kMT
* @since 2006-2-2 *%5{'
* @version 1.0 2f~($}+*
*/ %;xOB^H^
public class MergeSort implements SortUtil.Sort{ ~@W*r5/
Kg\R+i@#<
/* (non-Javadoc) K }$&:nao
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3L5r*fa
*/ !ZXUPH
public void sort(int[] data) { pv)`%<
int[] temp=new int[data.length]; #I*QX%(H#
mergeSort(data,temp,0,data.length-1); ` uCI Xb
} {FO$yw=>
dt\jGD
private void mergeSort(int[] data,int[] temp,int l,int r){ rf&M!d}!
int mid=(l+r)/2; %3r:s`{
if(l==r) return ; KKe8
ly,
mergeSort(data,temp,l,mid); "tk-w{>
mergeSort(data,temp,mid+1,r); "Zv~QwC
for(int i=l;i<=r;i++){ $A_]:qI2
temp=data; <If35Z)~
} nw:-J1kWR
int i1=l; 7V7zGx+Z7
int i2=mid+1; rVnd0K
for(int cur=l;cur<=r;cur++){ "2ru 7Y"
if(i1==mid+1) oXsL9,
data[cur]=temp[i2++]; !^c@shLN4
else if(i2>r) b\7iY&.C|
data[cur]=temp[i1++]; $FTO
else if(temp[i1] data[cur]=temp[i1++]; m"eteA,"k_
else )RgGcHT@
data[cur]=temp[i2++]; tz NlJ~E
} cZ8.TsI~
} zmuMWT;
x Gk6n4Gg
} o+B:#@9?
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改进后的归并排序: !A3-0zN!
bPKOw<
package org.rut.util.algorithm.support; y]
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Io`P,l:
import org.rut.util.algorithm.SortUtil; PUJ2`iP1^3
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/** |KI UgI
* @author treeroot 4bVO9aUG{
* @since 2006-2-2 <6TT)t<h
* @version 1.0 0fXLcal
*/ ,8'>R@o
public class ImprovedMergeSort implements SortUtil.Sort { @D^^_1~
u^Ku;RQo
private static final int THRESHOLD = 10; U @v*0
PXoz*)tk
/* ?4H#G)F
* (non-Javadoc) Z6C=T;w
* VXBY8;+Yp
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pO Iq%0]
*/ eDI=nSo
public void sort(int[] data) { 8LkP)]4^sO
int[] temp=new int[data.length]; IA zZ1#/3
mergeSort(data,temp,0,data.length-1); W<ZK,kv
} ^ >x|z.
./vZe_o)j$
private void mergeSort(int[] data, int[] temp, int l, int r) { AFvgbn8Qh
int i, j, k; 4LcX<BU9
int mid = (l + r) / 2; RprKm'b8x`
if (l == r) /'2O.d0}.
return; ) /vhclkb
if ((mid - l) >= THRESHOLD) Dn9w@KO
mergeSort(data, temp, l, mid); ocbB&
else DhLqhME53
insertSort(data, l, mid - l + 1); sAn0bX
if ((r - mid) > THRESHOLD) w>fdQ!RdP
mergeSort(data, temp, mid + 1, r); ^$>XW\yCs
else ~[o4a '
insertSort(data, mid + 1, r - mid); Qp,DL@mp>8
`N//A}9
for (i = l; i <= mid; i++) { cLa]D[H
temp = data; pL=d% m.W
} mMx ;yZ
for (j = 1; j <= r - mid; j++) { !rDdd%Z
temp[r - j + 1] = data[j + mid]; w.\w1:d
} O`GsS{$sS
int a = temp[l]; r~-.nb"P
int b = temp[r]; {#P`^g
for (i = l, j = r, k = l; k <= r; k++) { x&Vm!,%:1
if (a < b) { hVT~~n`Rj
data[k] = temp[i++]; )5j;KI%t
a = temp; V3;.{0k
} else { ]?1Y
e8>Y<
data[k] = temp[j--]; Snly UP~P
b = temp[j]; \@3Qi8u//
} 9Ya<My
} 1 2++RkL#
} up3O|lj4
V-I(WzR9y
/** XfE?C:v
* @param data 1be %G [*
* @param l {CG_P,FO
* @param i 3nZ9m
*/ jCAC
`
private void insertSort(int[] data, int start, int len) { 4(neKr5\#
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); =p^He!
} jr7C}B-Fb^
} 87%*+n:?*
} YIt& >
} Md6]R-l@
8[CB>-9
堆排序: |{*}|
,mS/h~-5n
package org.rut.util.algorithm.support; X{n- N5*
(`>voi<^
import org.rut.util.algorithm.SortUtil; UX3BeUi.)
b*;"q9u5
/** ^,F;M`[
* @author treeroot b `2|I {
* @since 2006-2-2 ;4M><OS!
* @version 1.0 a07@C
*/ tkQH\5
public class HeapSort implements SortUtil.Sort{ =~Ynz7 /x
)#a[-.OI
/* (non-Javadoc) JXG"M#{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &zQ2M#{82
*/ <Llp\XcZ
public void sort(int[] data) { (Rk_-9_E.
MaxHeap h=new MaxHeap(); +')f6P;t>=
h.init(data); F/m^?{==~*
for(int i=0;i h.remove(); -LDCBc"
System.arraycopy(h.queue,1,data,0,data.length); *#%9Rp2|
} +X`V|E,no
I)q,kP@yY
private static class MaxHeap{ _LAS~x7,
HkV1sT
void init(int[] data){ IX: 25CEI2
this.queue=new int[data.length+1]; w{~+EolK
for(int i=0;i queue[++size]=data; ms($9 Lv/
fixUp(size); ~^u16z,
} Wk:hFHs3
} E_F5(xSA
}R3=fbe,\
private int size=0; nJRS.xs
mS#zraJn5
private int[] queue; ccCzu6
%N;!+
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public int get() { Tmh(=
TB'
return queue[1]; /vY_Y3k#
} !3mA0-!+
I -Xlx<
public void remove() { 6:U$w7P0
e
SortUtil.swap(queue,1,size--); =ji1S}e~p
fixDown(1); AC
O)Dt(Y
} GV)<Q^9
file://fixdown A^ _a3$,0
private void fixDown(int k) { OA:%lC!
int j; jENr>$$
while ((j = k << 1) <= size) { O8|5KpXd@
if (j < size %26amp;%26amp; queue[j] j++; KZ!3j_pKy
if (queue[k]>queue[j]) file://不用交换 nd;fy$<J\
break; d!KsNkk
SortUtil.swap(queue,j,k); 1Z[/KJ
k = j; +(xeT+J
} vA$o~?a]/
} 7'wS\/e4a
private void fixUp(int k) { Qr1e@ =B
while (k > 1) { L,d
LE-L
int j = k >> 1; TI9UXa:V\
if (queue[j]>queue[k]) w ;daC(:
break; $^&ig
SortUtil.swap(queue,j,k); TF2>4 p
k = j; kc7lc|'z
} mzQ`N}]T:
} b}T6v
zkTp`>9R
} |IunpZV
Ngb(F84H?
} v+jsC`m
KXV[OF&J
SortUtil: AtR?J"3E
<I}2k
package org.rut.util.algorithm; t}v2$<!I
b{fQ|QD{^E
import org.rut.util.algorithm.support.BubbleSort; @fuM)B1"
import org.rut.util.algorithm.support.HeapSort;
)>D+x5o]
import org.rut.util.algorithm.support.ImprovedMergeSort; g}p;\o
import org.rut.util.algorithm.support.ImprovedQuickSort; V\V)<BARe
import org.rut.util.algorithm.support.InsertSort; \4"S7.% |
import org.rut.util.algorithm.support.MergeSort; `@i5i((
import org.rut.util.algorithm.support.QuickSort; BmHwu{n'
import org.rut.util.algorithm.support.SelectionSort; 9%*wb`&
import org.rut.util.algorithm.support.ShellSort; ~gz^Cdh
Bl9jkq
]
/** `mye}L2I
* @author treeroot xEuN
* @since 2006-2-2 x8;`i$
* @version 1.0 9N%JP+<89
*/ 0Z|FZGRP
public class SortUtil { \5Vde%!$Z
public final static int INSERT = 1; [m+iQVk'
public final static int BUBBLE = 2; IrMl:+t\
public final static int SELECTION = 3; x{NX8lN
public final static int SHELL = 4; nC {K$
public final static int QUICK = 5; l!#m&'16"
public final static int IMPROVED_QUICK = 6; aA-
public final static int MERGE = 7; GE|+fYVM-$
public final static int IMPROVED_MERGE = 8; m]*Bx%-1c
public final static int HEAP = 9; fw oQ'&
3]-_q"Co4f
public static void sort(int[] data) { <o2r~E0r3
sort(data, IMPROVED_QUICK); <8UYhGK
} jlFk@:y4
private static String[] name={ 10#oG{9
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 3D9!M-
}; Z ,^9Z
iR$<$P5
private static Sort[] impl=new Sort[]{ >:=|L%]s;\
new InsertSort(), :b[`
v
new BubbleSort(), `>DP,D)w(
new SelectionSort(), *&AfR8x_z
new ShellSort(), s] /tYJYl
new QuickSort(), 1Y_w5dU
new ImprovedQuickSort(), ]]}tdn _
new MergeSort(), I8OD$`~*U6
new ImprovedMergeSort(), +!f=jg06
new HeapSort() H"2uxhdLK3
}; OL7_'2_z.
5 ,0d
public static String toString(int algorithm){ E&yD8=vw
return name[algorithm-1]; tweY'x.{
} 6io , uh!
$4jell
public static void sort(int[] data, int algorithm) { 1B*WfP~
impl[algorithm-1].sort(data); K.gEj*@
} w@2Vts
J==SZ v
public static interface Sort { !~_zm*CqbZ
public void sort(int[] data); = sAn,ri
} `ovtHl3Q
K!D
o8|
public static void swap(int[] data, int i, int j) { B*!WrB:s
int temp = data; H7i$xWs
data = data[j]; z}SND9-"
data[j] = temp; Qy#)Gxp
} `"vZ);i<
} wix5B@