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。 bL18G(5
插入排序: !FJ_\UST0
"Yf?33UNZ
package org.rut.util.algorithm.support; aW#_"Y}v'
h*?/[XY
import org.rut.util.algorithm.SortUtil; t^@4n&Dg
/** 0Kenyn4 ?
* @author treeroot &\s>PvnquX
* @since 2006-2-2 "Kt[jV;6
* @version 1.0 8??%H7~
*/ qGc>+!y
public class InsertSort implements SortUtil.Sort{ MA5BTq<&
7(bE;(4
/* (non-Javadoc) 3Ho<4_I,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t!}?nw%$
*/ Y4n;[nHQ(
public void sort(int[] data) { .%N*g[J
int temp; ppo\cy;
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); OX/}j_8E^(
} OPwO`pN
} Oz_|pu
} 3ZU<u;
&y=~:1&f
} "M5&&\uT
Og3bV_,"
冒泡排序: (_O_zu8_
9:jZ3U
package org.rut.util.algorithm.support; mbRN W
Ok2>%e
import org.rut.util.algorithm.SortUtil; >QM$
NIf@
wXxk+DV@
/** ~",,&>#[K
* @author treeroot )t$|'c}
* @since 2006-2-2 dsJHhsu6
* @version 1.0 k!6wVJ|_Y
*/ ^YG.eT6iG
public class BubbleSort implements SortUtil.Sort{ Ws(#ThA
3Q"4-pd
/* (non-Javadoc) S[W|=(f9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1ssEJ;#s
*/ r)SwV!b
public void sort(int[] data) { /R44x\nhr
int temp; L(!mm
for(int i=0;i for(int j=data.length-1;j>i;j--){ Dx<CO1%z-
if(data[j] SortUtil.swap(data,j,j-1); 27Ve $Q8]v
} /IN/SZx
} sd~T
} =!%+ sem
} ,:QDl
Qv@Z#
} |%~sU,Y\(
.5x+FHu7
选择排序: /N&)r wc
Z[{ :
`
package org.rut.util.algorithm.support;
1RF?
dv
-dn\*n5
import org.rut.util.algorithm.SortUtil; h .Iscr^~
=a.avOZ
/** ^J=l] l
* @author treeroot cQMb+ Q2Yw
* @since 2006-2-2 ard<T}|N
* @version 1.0 \kGi5G]
*/ @n##.th
public class SelectionSort implements SortUtil.Sort { Mo2b"A;}|
s) vHLf4 T
/* 6M`N| %
* (non-Javadoc) Q+\?gU]
* 8Dq;QH}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0FV?By
*/ LGm>x
public void sort(int[] data) { \VX~'pkrd/
int temp; &m6x*i-5\f
for (int i = 0; i < data.length; i++) { 75V?K
int lowIndex = i; >9.xFiq<
for (int j = data.length - 1; j > i; j--) { fscAG\>8
if (data[j] < data[lowIndex]) { ~D)!zQkD
lowIndex = j; $3Ct@}=n
} I(dMiL
} bNG;`VZ%
SortUtil.swap(data,i,lowIndex); %?3\gFvBo
} cR1dGNcp/@
} yw%5W=<
JL4\%
} Ppzd.=E
+89s+4Jn
Shell排序: bt,^-gt@
&ns !\!
package org.rut.util.algorithm.support; #D$vH
*|RQ
)
import org.rut.util.algorithm.SortUtil; Xp=Y<`dX
w`vJE!4B
/** iTt"Ik'
* @author treeroot wR?M2*ri
* @since 2006-2-2 oOhm`7iy
* @version 1.0 e4V4%Qw
*/ {P_~_5o_
public class ShellSort implements SortUtil.Sort{ >69+e+|I
$Wy7z^t
/* (non-Javadoc) an 3"y6.8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @83h/Wcxd
*/ xP.B,1\X
public void sort(int[] data) { ,x?H]a)
for(int i=data.length/2;i>2;i/=2){ {g2cm'hD
for(int j=0;j insertSort(data,j,i); IPU'M*|Q
} .-;K$'YG
} 6}.B2f9
insertSort(data,0,1); FKd5]am
} L)'JkX J
u:pdY'`"#
/** " -4V48ci
* @param data 66?!"w
* @param j mAFqA
* @param i l[O!_bH
*/ 2roPZj
private void insertSort(int[] data, int start, int inc) { x+vNA J
int temp; qwu++9BM
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); FX"%
} /LM*nN$%
} w0Fi~:b
} :z^ps0
eB78z@
} p;:tzH\l
BciwS_Qx
快速排序: ~4[2{M.0>@
.9Bimhc6K
package org.rut.util.algorithm.support; 0\g;^Zpi
&J_|P43
import org.rut.util.algorithm.SortUtil; L`YnrDZK
y6'Fi(2yw
/** lnW/T --
* @author treeroot #lQbMuR
* @since 2006-2-2 PG9won5_
* @version 1.0 bCk_ZA
*/ |H5){ 2V>K
public class QuickSort implements SortUtil.Sort{ Qp<?[C}'W
4x=rew>Ew
/* (non-Javadoc) {o7ibw=E)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~)D2U:"^xm
*/ r_]wa
public void sort(int[] data) { ]y$D@/L@
quickSort(data,0,data.length-1); bK; -X cm
} g?UG6mFbE
private void quickSort(int[] data,int i,int j){ US'X9=b_
int pivotIndex=(i+j)/2; -:m;ePK
file://swap m:/@DZ
SortUtil.swap(data,pivotIndex,j); 8[,,Kr)-
#O^H?3Q3
int k=partition(data,i-1,j,data[j]); N7%Jy?-+
SortUtil.swap(data,k,j); h|dVVCsN
if((k-i)>1) quickSort(data,i,k-1); <(?ahO5
if((j-k)>1) quickSort(data,k+1,j); P$2J`b[H$
JrseU6N
} C;wN>HE
/** K8{j oh
* @param data QY-P!JD
* @param i Kom$i<O?48
* @param j d7^:z%Eb|
* @return w@.E}%bwq
*/ 29u"\f a
private int partition(int[] data, int l, int r,int pivot) { 5bv(J
T
do{ 17H_>a\`
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); kJ>l,AD/
SortUtil.swap(data,l,r); )& %X
AW{
} :cG_aOkid
while(l SortUtil.swap(data,l,r); nWbe=z&y8[
return l; R8Lp8!F'
} VGM8&J{o'
(E&}SI~
} @8|- C
}Nl-3I.S^
改进后的快速排序: gx4`pH;B\
v(FO8*5DZ
package org.rut.util.algorithm.support; 0+;.T1?
JE9|;A
import org.rut.util.algorithm.SortUtil; hBz~FB];&
xRP#}i:m
/** 9X@y*;w<t
* @author treeroot /^DDU!=(<
* @since 2006-2-2 D^04b<O<x
* @version 1.0 {_ww1'|A
*/ EHcqj;@m
public class ImprovedQuickSort implements SortUtil.Sort { X;v/$=-mz
=:1f
0QF
private static int MAX_STACK_SIZE=4096; 3kdTteyy+
private static int THRESHOLD=10; @&S4j]rq
/* (non-Javadoc) r=s,Ath
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *r?g&Vw$m
*/ 4NQS'*%D
public void sort(int[] data) { X/];*='Q
int[] stack=new int[MAX_STACK_SIZE]; my[)/'
niFX8%<hP
int top=-1; UALwr>+VJ
int pivot; WA8Qt\Q
int pivotIndex,l,r; 6WgGewn
jkFS=eonK
stack[++top]=0; >wdR4!x!?
stack[++top]=data.length-1; `{N0+n
ZJ 8~f
while(top>0){ W.-[ceM
int j=stack[top--]; ;q6:*H/
int i=stack[top--]; K:V_,[gO
}v;@1[.B
pivotIndex=(i+j)/2; nDkyo>t.
pivot=data[pivotIndex]; %QVX1\>]
-G(z!ed
SortUtil.swap(data,pivotIndex,j); +su>0'a
giyKEnP
file://partition ul?'kuYk
l=i-1; 8QE0J$d5
r=j; l-XiQ#-{
do{ {uL<$;#i
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); :7e2O!zH_
SortUtil.swap(data,l,r); ;B^G<
} 7cK#fh"hvg
while(l SortUtil.swap(data,l,r); ]N:SB
SortUtil.swap(data,l,j); &%>l9~F'~
37v!:xF!
if((l-i)>THRESHOLD){ gJ+MoAM"
stack[++top]=i; AVOzx00U
stack[++top]=l-1; Ii?<Lz
} & *B@qQ
if((j-l)>THRESHOLD){ AGx]srl
stack[++top]=l+1; a"b9h{h@
stack[++top]=j; 9<.FwV>
} F6}Pwz[c
DFwkd/3"
} F8Rd#^9PD
file://new InsertSort().sort(data); )V!9&
insertSort(data); X'TQtI
} /wljbb/s
/** ?>1AT==wI
* @param data 7;5?2)+=6
*/ T6Z 2 #
private void insertSort(int[] data) { a^~T-;_V
int temp; ES;7_ .q
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "e69aAA,
} q+19EJ(
} [~W"$sT
} Zuo7MR
{<\nl#}5S
} R^1sbmwk
[0lCb"
归并排序: 'D1
T"}
-=&r}/&
package org.rut.util.algorithm.support; 2wlrei
!Z
YMks4
import org.rut.util.algorithm.SortUtil; f#ID:Ap3
=V5<>5"M?
/** U8c0N<j
* @author treeroot _.' j'j%
* @since 2006-2-2 ?uc=(J+6
* @version 1.0 hvtg_w6K
*/ 6|V713\
public class MergeSort implements SortUtil.Sort{ <?yAIhgN*
3=o3VGZP
/* (non-Javadoc) Y1rU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -n?|,cO
*/ qx18A
public void sort(int[] data) { 8+k\0fmy
int[] temp=new int[data.length]; !l?Go<^*L
mergeSort(data,temp,0,data.length-1); Op" \i
} 54_CewL1P]
=W.b7 6_
private void mergeSort(int[] data,int[] temp,int l,int r){ fZ`b~ZBwIj
int mid=(l+r)/2; xlp^XT6#
if(l==r) return ; @N7X(@O
mergeSort(data,temp,l,mid); Tsxl4ZK
mergeSort(data,temp,mid+1,r); S`8
h]vX
for(int i=l;i<=r;i++){ |P$tLOrG
temp=data; lE78Yl]
} UA!-YTh
int i1=l; :UoZ`O~
int i2=mid+1; vDV`!JU
for(int cur=l;cur<=r;cur++){ }N]|zCEj
if(i1==mid+1) R3TdQ6j
data[cur]=temp[i2++]; 7Y&W^]UZ0t
else if(i2>r) Y#{ L}
data[cur]=temp[i1++]; T\:Vu{|
else if(temp[i1] data[cur]=temp[i1++]; rZLTai}`>
else |_&vW\
data[cur]=temp[i2++]; v,bes[Ik
} [M 65T@v
} ^Y8?iC<+
b6RuYwHWV0
} {VE\}zKF
#Q.A)5_
改进后的归并排序: "EQ`Q=8
-8-
package org.rut.util.algorithm.support; x~j>Lvw L
^ b{0|:
import org.rut.util.algorithm.SortUtil; Jt\?,~,
&p8b4y_
/** -M2c8P:.b
* @author treeroot <.HX_z3l
* @since 2006-2-2 m=j xTZK
* @version 1.0 z4!TK ps
*/ ?x7zYE,6
public class ImprovedMergeSort implements SortUtil.Sort { @]uvpI!h
gXZC%S
private static final int THRESHOLD = 10; dT4?8:
W=|sy-N{2
/* *IG} /O.VT
* (non-Javadoc) X!ZUR^
* qa)X\0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )cJ9YKKy
*/ zlco?Rt
public void sort(int[] data) { NYA,
int[] temp=new int[data.length]; ~2@+#1[g8z
mergeSort(data,temp,0,data.length-1); LX[<Wh_X(
} @;_xFL;{g
pUutI|mt/
private void mergeSort(int[] data, int[] temp, int l, int r) { g
VX
int i, j, k; bCHJLtDQ
int mid = (l + r) / 2; m/Ou$
if (l == r) cK%Sty'8+
return; .|^L\L(!
if ((mid - l) >= THRESHOLD) 1v)ur\>R
mergeSort(data, temp, l, mid); [`Seh $
else M>nplHq
insertSort(data, l, mid - l + 1); tGDsZ;3Yr
if ((r - mid) > THRESHOLD) LG0+A}E=C
mergeSort(data, temp, mid + 1, r); a'u:1C^\
else C ?JcCD2
insertSort(data, mid + 1, r - mid); XZde}zUWn
\B/+.\
for (i = l; i <= mid; i++) { lqh+yX%*
temp = data; *`&4<>=n
} 7TD%vhbiwi
for (j = 1; j <= r - mid; j++) { z2*>5c%
temp[r - j + 1] = data[j + mid]; :l~Wt7R
} eLWD?-v%
int a = temp[l]; }G}2Y (
int b = temp[r]; |(G^3+5Uwm
for (i = l, j = r, k = l; k <= r; k++) { HJWk%t<
if (a < b) { .Y|5i^i9{
data[k] = temp[i++];
=z`#n}v
a = temp; M:K5r7Q!yv
} else { mj:X'BVA
data[k] = temp[j--]; @ px2/x
b = temp[j]; 1ml>
} *;@V5[^3I?
} +NWhvs
} '0|0rwx
z/Z
0cM#
/** }TE4)vXs
* @param data #~QkS_
* @param l xc{$=>'G
* @param i m%au* 0p
*/ "=8= G
private void insertSort(int[] data, int start, int len) { uflRW+-2
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Mtxn@m{i;"
} }8tD|t[
} a^/j&9
}
j`tBki:
} ZyAm:yO
jyB^a;-
堆排序: C]H'z
o+Cd\D69S
package org.rut.util.algorithm.support; "g}m xPe
x[L/d"Wf
import org.rut.util.algorithm.SortUtil; >F7v'-*{
vU|=" #
/** |hGi8
* @author treeroot kD1[6cJ!=.
* @since 2006-2-2 4'EC(NR7N
* @version 1.0 qcpAjjK
*/ N;N,5rxV
public class HeapSort implements SortUtil.Sort{ Eci,];S7
+'aG&^k4
/* (non-Javadoc) (b!`klQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <;) qyP
*/ )/uu~9SFd
public void sort(int[] data) { v:.`~h/b
MaxHeap h=new MaxHeap(); MYI*0o;
h.init(data); j!m42
for(int i=0;i h.remove(); >Vp#
System.arraycopy(h.queue,1,data,0,data.length); oY Y?`<N#
} e:2e5gz
+7%}SV 2)
private static class MaxHeap{ 4l)Q
|a!y%R=
void init(int[] data){ \ct7~!qM
this.queue=new int[data.length+1]; ;F3#AO4(
for(int i=0;i queue[++size]=data; .] gY{_|x
fixUp(size); En&`m
} |, ws 3
} yex4A)n9"'
R8"qDj
private int size=0; H!6nIS9yxt
V'n4iM
private int[] queue; ZP*(ZU@j=Z
PO1|l-v<Yq
public int get() { )o51QgPy
return queue[1]; #21t8
} 3/d`s0O
$K-od3h4=
public void remove() { r*I u6
SortUtil.swap(queue,1,size--); @xu/&pbI
fixDown(1); *21foBfqh
} b&iJui"7k
file://fixdown \9FWH}|
private void fixDown(int k) { Y\cQ"9
int j; 8y$c\Eu(mF
while ((j = k << 1) <= size) { xNLvK:@0p
if (j < size %26amp;%26amp; queue[j] j++; IgxZ_2hO
if (queue[k]>queue[j]) file://不用交换 y&F0IJ|`@M
break; bi=IIVlH
SortUtil.swap(queue,j,k); ??MF8uv
k = j; >o45vB4o
} 2p6`@8*34
}
4|yZA*Q^
private void fixUp(int k) { @20~R/vh
while (k > 1) { E
0k1yA
int j = k >> 1; 7E4Xvg+c
if (queue[j]>queue[k]) HW,2x} [
break; vH`m
W`=
SortUtil.swap(queue,j,k); o>G^)aRa
k = j; *Y!c6eA
} 9bE/7v
} }iu(-{Z
97XGJ1HI
} Td|x~mZv:
P. V #
} qjc8 $#zXS
qYi<GI*|@
SortUtil: gr&Rkuyfv
<;T$?J9
package org.rut.util.algorithm; {\87]xJ
Hf^Tok^6@]
import org.rut.util.algorithm.support.BubbleSort; z'9Mg]&>
import org.rut.util.algorithm.support.HeapSort; cag9f?w@V
import org.rut.util.algorithm.support.ImprovedMergeSort; 0nX.%2p#Je
import org.rut.util.algorithm.support.ImprovedQuickSort; fD>0
import org.rut.util.algorithm.support.InsertSort; _mi(:s(
import org.rut.util.algorithm.support.MergeSort; 1Vden.H*CI
import org.rut.util.algorithm.support.QuickSort; *CnrzrKtQ
import org.rut.util.algorithm.support.SelectionSort; ohy?l
import org.rut.util.algorithm.support.ShellSort; jT6zpi~]E
9S_N*wC.
/** J &<uP)<
* @author treeroot
4h zS
* @since 2006-2-2 o{QU?H5h
* @version 1.0 Ku
W$
*/ `/1Zy}cD
public class SortUtil { ^KK9T5H
public final static int INSERT = 1; 8N58w)%7`
public final static int BUBBLE = 2; xUG:x4Gz+
public final static int SELECTION = 3; 4h[S`;D0Vf
public final static int SHELL = 4; 9Ytd E*,k
public final static int QUICK = 5; K% Gbl#
public final static int IMPROVED_QUICK = 6; m4@f&6x
public final static int MERGE = 7; x:Nd>Fb
public final static int IMPROVED_MERGE = 8; :2n(WXFFI
public final static int HEAP = 9; 1.5lJ:[G
_tGR:E
public static void sort(int[] data) { e 1k\:]6
sort(data, IMPROVED_QUICK); cuw3}4m%
} OR\-%JX/5
private static String[] name={ 0lvX,78G ;
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" VB?mr13}G
}; +]!`>
qZ39TTQ*p
private static Sort[] impl=new Sort[]{ JMT?+/Q bu
new InsertSort(), kOe~0xoT@u
new BubbleSort(), .W>8bg'u9
new SelectionSort(), 7%(|)3"V
new ShellSort(), B-OuBS,fwC
new QuickSort(), T21SuM
new ImprovedQuickSort(), kZlRS^6
new MergeSort(), u D.E>.B
new ImprovedMergeSort(), MKuy?mri~
new HeapSort() GW(-'V/
}; Q)l]TgvSe
^z[-pTY
public static String toString(int algorithm){ LX
%8a^?;
return name[algorithm-1]; xYMNyj~
} JMMsOA_]
J{Z-4y
public static void sort(int[] data, int algorithm) { zn |=Q$81
impl[algorithm-1].sort(data); C+WHg-l
} ; md{T'
9u 'hCi(
public static interface Sort { 3,K*r"=
public void sort(int[] data); F7(~v2|
} lRn6Zh
v!;E1
public static void swap(int[] data, int i, int j) { t `4^cd5V
int temp = data; d E@R7yU@
data = data[j]; `;^% t
data[j] = temp; VesO/xG<
} o3;u*f0rWn
} X-Sso9/q.