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。 x^3K=l;N
插入排序: "=?JIQ
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package org.rut.util.algorithm.support; _u-tRHh|A
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import org.rut.util.algorithm.SortUtil; bjUe+#BL
/** ^N}{M$
* @author treeroot 2aivc,m{r
* @since 2006-2-2 &}gH!5L m
* @version 1.0 ]mBlXE:Z
*/ #)D$\0ag
public class InsertSort implements SortUtil.Sort{ BI2'NN\
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/* (non-Javadoc) Pd:tRY+t/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]I~BgE;C9
*/ 5'Mw{`
public void sort(int[] data) { U&kdR+dB
int temp; Mn\L55?E(
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); sC.cMZ e
} W[!bF'-10
} n\JSt}A
} ),;h
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} 5;{*mJ:F
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冒泡排序: !H^R_GC
sN[q.M?
package org.rut.util.algorithm.support; #I yM`YB0
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import org.rut.util.algorithm.SortUtil; I~
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/** .:['&; k
* @author treeroot eF8um$t9
* @since 2006-2-2 bB.nevb9p
* @version 1.0 =Oh/4TbW[
*/ Y$q--JA
public class BubbleSort implements SortUtil.Sort{ K<ldl.
0J )VEMC
/* (non-Javadoc) P`hg*"<V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $I@. <J*
*/ x@@k_'~t%
public void sort(int[] data) { e]jzFm~
int temp; BGB.SN#q+
for(int i=0;i for(int j=data.length-1;j>i;j--){ 9&c *%mm
if(data[j] SortUtil.swap(data,j,j-1); >GDN~'}^oz
} LrfyH"#!:
} 6mrfkYK
} )N
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} {7Ez7'SVV
ctC!b{S"@
} kZ_5R#xK
cRPy5['E
选择排序: JENq?$S
`Oi6o[a
package org.rut.util.algorithm.support; n@e|PWu
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import org.rut.util.algorithm.SortUtil; doe u`
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/** ;#D:S6 L
* @author treeroot %}~Ncn_r
* @since 2006-2-2 `_e 1LEH
* @version 1.0 $uNYus^vS
*/ }WkR-5N
public class SelectionSort implements SortUtil.Sort { T8QRO%t
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/* W{'tS{
* (non-Javadoc) !
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* !Ys.KDL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x: Tm4V{
*/ PsMCs|*
public void sort(int[] data) { .7zdA IKW
int temp; T;I>5aQ:q4
for (int i = 0; i < data.length; i++) { /?8rj3
int lowIndex = i; |
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for (int j = data.length - 1; j > i; j--) { qxwD4L`S
if (data[j] < data[lowIndex]) { *C(XGX\?-
lowIndex = j; FU~:9EEx
} 0jwex
} i%_nH"h
SortUtil.swap(data,i,lowIndex); n47v5.Wn
} b{d@:"
} t?kbN\,
n|iO)L\9aB
} ^RS`q+g
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Shell排序: ?G!DYUK
q:v&wb%
package org.rut.util.algorithm.support; of:xj$dQ_
E^jb#9\R
import org.rut.util.algorithm.SortUtil; [<{+tAdn)
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/** ~lLIq!!\
* @author treeroot ugt|'i
* @since 2006-2-2 G_x<2E"d
* @version 1.0 nz]+G2h
*/ 6ax|EMw
public class ShellSort implements SortUtil.Sort{ X}3o
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/* (non-Javadoc) |P]>[}mD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O}#h^AU-BS
*/ D@>^_cTO24
public void sort(int[] data) { B[O1^jdO
for(int i=data.length/2;i>2;i/=2){ Ik4U+'z6
for(int j=0;j insertSort(data,j,i); &<sDbNS
} j!P]xl0vOZ
} J;g+
insertSort(data,0,1); tcf>9YsOr
} t|aBe7t7
#4*~ 4/
/** vN%SN>=L<
* @param data (-(sBQ a+
* @param j #Hr>KQ5mJQ
* @param i C_=WL(
*/ =7mn=
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private void insertSort(int[] data, int start, int inc) { x-/ `c
int temp; /_P5UE(
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); >{^&;$G+*
} (TV ye4Z
} ,$96bF "#
} IPoNAi<b
QuJ)WaJkC
} O?9&6x
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快速排序: ZLJfSnB
4`
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package org.rut.util.algorithm.support; m. G}#/
1/YWDxo,
import org.rut.util.algorithm.SortUtil; bi bjFg
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/** Vx^+Z,y&QP
* @author treeroot E8~Bp-G)
* @since 2006-2-2 !$x9 s'D
* @version 1.0 39QAj&
*/ COa"zg
public class QuickSort implements SortUtil.Sort{ _kb
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/* (non-Javadoc) io$!z=W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r-+ .Ax4L"
*/ z17x%jXy
public void sort(int[] data) { ^[SQw)*
quickSort(data,0,data.length-1); N4Z%8:"pj
} uf (`I
private void quickSort(int[] data,int i,int j){ 9BPucXK
int pivotIndex=(i+j)/2; #AzZ4<;7
file://swap 2#:h.8
SortUtil.swap(data,pivotIndex,j); 7W6tz\Y
$4y;F]
int k=partition(data,i-1,j,data[j]); ! 3O#'CV
SortUtil.swap(data,k,j); !52]'yub
if((k-i)>1) quickSort(data,i,k-1); R;gN^Yjk:
if((j-k)>1) quickSort(data,k+1,j); PG8|w[V1 "
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} 9GuG"^08
/** hGx)X64Mw
* @param data |>(;gr/5(
* @param i )Ab!R:4
* @param j $UAmUQg)}_
* @return CxC&+';
*/ |"vUC/R2&
private int partition(int[] data, int l, int r,int pivot) { #N?EPV$
do{ xZ }1dq8
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); vl8Ums} +
SortUtil.swap(data,l,r); SNB>
} yT<yy>J9l#
while(l SortUtil.swap(data,l,r); 18 pi3i[
return l; q/[)Z
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} QXnL(z
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} , [xDNl[Y|
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改进后的快速排序: ML!Zm[I9
K)c`G_%G
package org.rut.util.algorithm.support; mr]IxTv
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import org.rut.util.algorithm.SortUtil; <GI{`@5C
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/** }UK<tUO
* @author treeroot &y/
* @since 2006-2-2 lV/-jkR
* @version 1.0 6C>"H
*/ c8I :
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public class ImprovedQuickSort implements SortUtil.Sort { Nh7+Vl
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private static int MAX_STACK_SIZE=4096; R87-L*9B^0
private static int THRESHOLD=10; M/XxiF
/* (non-Javadoc) !j,LS$tPu
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #;?j]npg]
*/ YoV^Y&:9<
public void sort(int[] data) { y~CK&[H
int[] stack=new int[MAX_STACK_SIZE]; AOhfQ:E 4
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int top=-1; fGDR<t3yiQ
int pivot; sf\p>gb
int pivotIndex,l,r; 47b=>D8
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stack[++top]=0; *6oQW
stack[++top]=data.length-1; m0+X 109
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while(top>0){ SnsOuC5Ah
int j=stack[top--]; kYBy\
int i=stack[top--]; t(YrF,
j^
VAA\
pivotIndex=(i+j)/2; _zq"<Q c
pivot=data[pivotIndex]; u/3[6MIp
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SortUtil.swap(data,pivotIndex,j); 4vi P lO
dGU io?
file://partition AvF:$kG
l=i-1; M}|<#
i7u
r=j; L P?E
do{ QZ!;` ?(
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); :feU
SortUtil.swap(data,l,r); XLe8]y=
} <u2rb6
while(l SortUtil.swap(data,l,r); `wRQ-<Y
SortUtil.swap(data,l,j); ^a&-GhX;
#jAlmxN
if((l-i)>THRESHOLD){ #flOaRl.
stack[++top]=i; bkfwsYZx
stack[++top]=l-1; =~M%zdIXv
}
<WN?
if((j-l)>THRESHOLD){ bjvpYZC\5
stack[++top]=l+1; ^sz4-+>
stack[++top]=j; B]Vnu7
} ?}4 =A&][
*GxOiv7"4W
} ag Za+a
file://new InsertSort().sort(data); xxWrSl`fB
insertSort(data); /XtpGk_1)
} $e66j V
/** n#,<-Rb-
* @param data =SJwCT0;
*/ QJ2V&t"3
private void insertSort(int[] data) { j{00iA}
int temp; !;'#fxW[
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >*#clf;@p
} WqX#T
} zs!}P
} %Q9
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NV 6kj=r
} 8YNii-pl
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归并排序: tmM8YN|
6E~T$^Q}
package org.rut.util.algorithm.support; v0EF?$Wo
>05_#{up
import org.rut.util.algorithm.SortUtil; ^B[%|{cO
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/** qI-q%]l
* @author treeroot m/W0vPM1
* @since 2006-2-2 M>H4bU(
* @version 1.0 5fpBzn$
*/ xlQl1lOX
public class MergeSort implements SortUtil.Sort{ bo^d!/;
}1<_
/* (non-Javadoc) 2,.%]U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '\yp}r'u
*/ 0Y7b$~n'Y
public void sort(int[] data) { Xq"@Z
int[] temp=new int[data.length]; B^'Uh+Y
mergeSort(data,temp,0,data.length-1); 8SmtEV[b3
} HF@K$RPK
3,qq\gxB
private void mergeSort(int[] data,int[] temp,int l,int r){ ^zjQ(ca@"x
int mid=(l+r)/2; 0@;kD]Z
if(l==r) return ; ZZ 1s}TG
mergeSort(data,temp,l,mid); -&87nR(eW
mergeSort(data,temp,mid+1,r); VT.BHZ
for(int i=l;i<=r;i++){ ^<L;"jl%
temp=data; 1o5DQ'~n
} 6n9;t\'Gt
int i1=l; -P!_<\q\l
int i2=mid+1; d0(GE4+/
for(int cur=l;cur<=r;cur++){ 7bBOV(/s
if(i1==mid+1) q0Rd^c
data[cur]=temp[i2++]; -]=-IiC#
else if(i2>r) rN3i5.*/t
data[cur]=temp[i1++]; sD V*k4
else if(temp[i1] data[cur]=temp[i1++]; utk'joo
else Vg1!
u+`<
data[cur]=temp[i2++]; _ PC}`Y'&
} =Rnx!E
} Al?LO;$Pa?
s^nPSY!
} ni @Mqb
CV<@Rgoa
改进后的归并排序: 6*@\Qsp615
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package org.rut.util.algorithm.support; mG,%f"b0
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import org.rut.util.algorithm.SortUtil; w3j51v` 0'
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/** pPztUz/.
* @author treeroot `_L=~F8
* @since 2006-2-2 6 isz
* @version 1.0 ~r`~I"ZK7^
*/ f@roRn8p?
public class ImprovedMergeSort implements SortUtil.Sort { XxT7YCi
Bsm>^zZ`YU
private static final int THRESHOLD = 10; $)OUOv
h'8w<n+%)
/* 7Gb(&'n
* (non-Javadoc) s(yV E
* 5gpqN)|)[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /$OX'L&b
*/ Kgi| 7w
public void sort(int[] data) { @ucN|r}=R
int[] temp=new int[data.length]; bI^zwK,@4
mergeSort(data,temp,0,data.length-1); ?Z}n0E `
} j\w>}Pc
:P$I;YY=A
private void mergeSort(int[] data, int[] temp, int l, int r) { 5H_%inWM
int i, j, k; 'TPRGX~&
int mid = (l + r) / 2; ?L|Jc_E
if (l == r) +cAN4
return; kqYvd]ss
if ((mid - l) >= THRESHOLD) , WF)GS|7V
mergeSort(data, temp, l, mid); _#c^z;!
else 4uip!@$K
insertSort(data, l, mid - l + 1); &JoMrcEZ
if ((r - mid) > THRESHOLD) 5BKmp-m
mergeSort(data, temp, mid + 1, r); y%T5"p$,
else {b@rQCre7
insertSort(data, mid + 1, r - mid); amI$0
&lYKi3}x
for (i = l; i <= mid; i++) { Ov{fO
temp = data; bTzVmqGY
} 1m-"v:fT5D
for (j = 1; j <= r - mid; j++) { lu@#)
temp[r - j + 1] = data[j + mid]; H~~I6D{8
} Ty]/F+{
int a = temp[l]; C~M~2@Iori
int b = temp[r]; ?i4}[q
for (i = l, j = r, k = l; k <= r; k++) { 06bl$%
if (a < b) { +4emkDTdR
data[k] = temp[i++]; U4#[>*
a = temp; x>Ah4ad
} else { \K 01F
data[k] = temp[j--]; g
j`"|
b = temp[j]; dG{`Jk
} pk'@!|g%=
} w $7J)ngA9
} ?U0iHg{
x q93>Hs
/** 6l#1E#]|
* @param data fSp(}'m2L
* @param l 3mn0
* @param i JWG7QH
*/ pt8X.f,iA
private void insertSort(int[] data, int start, int len) { zx\N^R;Jq
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); :>lica_
} v>Il#
} |dNtM ^
} ZNPzQ:I@
} x_Ki5~w5
:=04_5 z
堆排序: 8eP2B281
xJ9_#$ngeM
package org.rut.util.algorithm.support; Ms?V1
RVfRGc^lK
import org.rut.util.algorithm.SortUtil; S[UHx}.
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/** &)Z8Qu
* @author treeroot yz-IZt(
* @since 2006-2-2 sZ-]yr\E"
* @version 1.0 =S@$"_&
*/ kP%W:4l0
public class HeapSort implements SortUtil.Sort{ ua:.97~Ym
G*BM'^0+
/* (non-Javadoc) ~nb%w?vv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6__@?XzJ
*/ qce#
public void sort(int[] data) { 8 Oeg"d
MaxHeap h=new MaxHeap(); TMG:fg&E~
h.init(data); C5Q|3d
for(int i=0;i h.remove(); #I@]8U#,":
System.arraycopy(h.queue,1,data,0,data.length); ( ~pcPGUG
} ]^gD@].
}M/w 0U0o
private static class MaxHeap{ w0~iGr}P
k`js~/Xv
void init(int[] data){ 0[D5]mcv
this.queue=new int[data.length+1]; ;JFE7\-mC
for(int i=0;i queue[++size]=data; NpD}7t<EF
fixUp(size); GT%V,OJ
} MvY0?!v
} U=XaI%ZM)
*D<S \6=
private int size=0; LF%1)x
!N,Z3p>Q
private int[] queue; 5 LX3.
z$G?J+?J
public int get() { p%IR4f
return queue[1]; >^:g[6Sj
} nAF@47Wo
v\-"NHl
public void remove() { sNvT0
SortUtil.swap(queue,1,size--); O(
he
fixDown(1); ~B(]0:
} d5A!kU _.
file://fixdown Z;S*fS-_
private void fixDown(int k) { Z/wh?K3y
int j; Dr`\
while ((j = k << 1) <= size) { &t%CuU]/@
if (j < size %26amp;%26amp; queue[j] j++; B<1*p,z
if (queue[k]>queue[j]) file://不用交换 `1EBnL_1
break; ~J<bwF
SortUtil.swap(queue,j,k); O%o#CBf0
k = j; NG'VlT
} ErESk"2t
} EFql
g9bK
private void fixUp(int k) { ?xQlX%&`6
while (k > 1) { d?N"NqaN
int j = k >> 1; kTiQO2H
if (queue[j]>queue[k]) @hzQk~Gdi
break;
`4}!+fXQ
SortUtil.swap(queue,j,k); 'VJMi5Y(-
k = j; HC{|D>x.
} ]Jnf.3
} YGWb!|Z$
T]^F%D%
} ?qO,=ms>-
YfMe69/0I
} hQL9 Zl~
puqLXDjA/
SortUtil: :VN<,1s9p^
Od&M^;BQ
package org.rut.util.algorithm; $+Pv
fQ
a
m<R!(
import org.rut.util.algorithm.support.BubbleSort; =~=/ d q
import org.rut.util.algorithm.support.HeapSort; $elrX-(vL
import org.rut.util.algorithm.support.ImprovedMergeSort; R8'yQ#FVy
import org.rut.util.algorithm.support.ImprovedQuickSort; {Y/|7Cl0
import org.rut.util.algorithm.support.InsertSort; eU%5CVH.v
import org.rut.util.algorithm.support.MergeSort; n[4Nu`E9
import org.rut.util.algorithm.support.QuickSort; CPVKz
import org.rut.util.algorithm.support.SelectionSort; VdeK~#k
import org.rut.util.algorithm.support.ShellSort; $#RD3#=?u
j%p~.kW5
/** rG\m]C3 E
* @author treeroot CzvlZDo
* @since 2006-2-2 m/eGnv;!
* @version 1.0 On'3K+(_
*/ s=%HT fw
public class SortUtil { Vj2GK"$v
public final static int INSERT = 1; r`;C9#jZ
public final static int BUBBLE = 2; Z$ftG7;P0
public final static int SELECTION = 3; g~B@=R
public final static int SHELL = 4; +W;B8^imG
public final static int QUICK = 5; vhL&az
public final static int IMPROVED_QUICK = 6; ^F" *;8$
public final static int MERGE = 7; G0Wd"AV+
public final static int IMPROVED_MERGE = 8; zl:
u@!'
public final static int HEAP = 9; izC>-
LpmspIPvf
public static void sort(int[] data) { 9d{W/t?NH
sort(data, IMPROVED_QUICK); =k$d8g
ez
} 7_K(xmK
private static String[] name={ tjd"05"@:
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" vj^UF(X
}; ZH0f32K
N!h>fE`
private static Sort[] impl=new Sort[]{ N"T8
Pt
new InsertSort(), Q?"[zX1
new BubbleSort(), u^]yz&9V
new SelectionSort(), p +T&9
new ShellSort(), D~?kvyJ
new QuickSort(), %I.{umU
new ImprovedQuickSort(), mefmoZ
new MergeSort(), i;xg[e8.
new ImprovedMergeSort(), Nl_;l
new HeapSort() j}VOr >xz
}; ^m+W
,gOQIS56
public static String toString(int algorithm){ ;etQ
return name[algorithm-1]; ttsB'|ps
} 8uT6Q C f
_yoG<qI
public static void sort(int[] data, int algorithm) { BphF+'CM
impl[algorithm-1].sort(data); I"!gzI`Sd
} OeAPBhTmFj
z9+94<J
public static interface Sort { /y!Vs`PZ!
public void sort(int[] data); >bZ#
} OK)0no=OAK
b?Jm)
public static void swap(int[] data, int i, int j) { YpKai3 B
int temp = data; <+$S{Z.
data = data[j]; A;|DQR()
data[j] = temp; u!-eP7;7
} P\AH9#XL
} c:6w >: