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。 *,.WI )@
插入排序: 2>80Qp!xO
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package org.rut.util.algorithm.support; 3R1v0
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import org.rut.util.algorithm.SortUtil; EtjN :p|$
/** 3Kc
* @author treeroot d/vF^v*o0X
* @since 2006-2-2 *.#d'~+
* @version 1.0 rK;F]ei
*/ -/*-e
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public class InsertSort implements SortUtil.Sort{ ]mYT!(}
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/* (non-Javadoc) ZW{pO:-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &x
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*/ _5 Zhv-7
public void sort(int[] data) { p}$VBl$'
int temp; BUqe~E|I
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~mP#V
} W-ErzX
} 5(R ./
} 1K.i>]}>
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} *~~ >?
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冒泡排序: o(Yj[:+m
T$RVz
package org.rut.util.algorithm.support; -$WU-7`
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import org.rut.util.algorithm.SortUtil; f'` QW@U
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/** B~K@o.%
* @author treeroot 1|_jV7`Mz
* @since 2006-2-2 jHBzZ!<
* @version 1.0 r8x<-u4
*/ x?v/|
public class BubbleSort implements SortUtil.Sort{ Z+!._uA
=:OS"qD3l
/* (non-Javadoc) s4uZ;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `1aEV#;
*/ @2ZE8O#I
public void sort(int[] data) { lArYlR}
int temp; FGY4 u4y
for(int i=0;i for(int j=data.length-1;j>i;j--){ = s^KZV
if(data[j] SortUtil.swap(data,j,j-1); =oz$uD}?
} tfW*(oU
} Loo48
} c `C
/U7j
} >|Ps23J#
7<;87t]]
} <RH2G
/qp)n">
选择排序: nA$zp
1;Bgt v$
package org.rut.util.algorithm.support; w9h`8pt
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import org.rut.util.algorithm.SortUtil; s|L}wtc
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/** ,U':=8
* @author treeroot 3~v'Ev
* @since 2006-2-2 Sxo9y0K8-
* @version 1.0 oRmz'F
*/ =g)|g+[H
public class SelectionSort implements SortUtil.Sort { y
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&!7{2E\7C
/* Plpt7Pa_
* (non-Javadoc) ig|ol*~
* M{M>$pt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !@j5 yYf
*/ w$%d"Jm#X
public void sort(int[] data) { g*]Gc%
int temp; 0RmQfD>
for (int i = 0; i < data.length; i++) { t:|knZq
int lowIndex = i; N0TEVDsk
for (int j = data.length - 1; j > i; j--) { #'s}=i}y"C
if (data[j] < data[lowIndex]) { mT enzIp
lowIndex = j; =To}yJ#
} gYb}<[O!
} :rr;9nMR[
SortUtil.swap(data,i,lowIndex); B^Z %38o
} V}de|=
} 1C)
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} 2rK%fV53b
6%'bo`S#
Shell排序: ]3UEju8$
!58j xh
package org.rut.util.algorithm.support; qRy<W
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import org.rut.util.algorithm.SortUtil; gG5@ KD6k
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/** s az<NT
* @author treeroot Tp7*T8
* @since 2006-2-2 8)n799<.
* @version 1.0 !e+ex"7
*/ w#ha ^4
public class ShellSort implements SortUtil.Sort{ o1I8l7
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/* (non-Javadoc) `yiw<9yp2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cbw@:+%J{
*/ aH@GhI^@
public void sort(int[] data) { :mOHR&2xR%
for(int i=data.length/2;i>2;i/=2){ ~%)ug3%e
for(int j=0;j insertSort(data,j,i); MBlhlMyI
} ME'hN->c
} GZt+(q
insertSort(data,0,1); \jlem <&
} E"8cB]`|8
H<6TN^
/** )<Cf,R
* @param data xz9xt
* @param j K7o!,['W
* @param i )L^GGy8w
*/ oUXi4lsSc
private void insertSort(int[] data, int start, int inc) { aE]/w1a
int temp; kTJz .
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); GJ1ap^k
} 7Q_AZR4
} ~o"VZp
} 0xv@l^B
!aylrJJ
} h?UUd\RU)
T&@xgj|!)
快速排序: WKjE^u
d5aG6/
package org.rut.util.algorithm.support; ){'Ef_/R
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import org.rut.util.algorithm.SortUtil; 0M[O(.x
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/** %5) 1^
* @author treeroot R1CoS6
* @since 2006-2-2 {& Pk$Q!
* @version 1.0 #ZFedK0vv
*/ ]I
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public class QuickSort implements SortUtil.Sort{ 4.>rd6BAN-
I.V?O}
/* (non-Javadoc) k5 s8s@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?<_yW#x6
*/ *RPdU.
public void sort(int[] data) { -)='htiU
quickSort(data,0,data.length-1); Io8h 8N-
} 4$HU=]b6Tf
private void quickSort(int[] data,int i,int j){ UJhmhI
int pivotIndex=(i+j)/2; ED0Vlw+1
file://swap f=$w,^)M
SortUtil.swap(data,pivotIndex,j); v$H=~m
>%x N?%
int k=partition(data,i-1,j,data[j]); fMGL1VN
SortUtil.swap(data,k,j); /&PRw<}>_o
if((k-i)>1) quickSort(data,i,k-1); EL--?<g
if((j-k)>1) quickSort(data,k+1,j); ]f%yeD
LYYz =gvZl
} =IbDGw(
/** (Nzup3j
* @param data b#h}g>l
* @param i ~Bw)rf,
* @param j xK7xAO
* @return 4F WL\;6
*/ 701mf1a
private int partition(int[] data, int l, int r,int pivot) { m{dXN=
do{ 6a_MA*XK
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); UaW,#P
SortUtil.swap(data,l,r); ?vnO@Bb/a
} 8XS_I{}?
while(l SortUtil.swap(data,l,r); HUP~
return l; ef
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} {>x6SVF
he/WqCZg
} &?(<6v7
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改进后的快速排序: 4Lg!54P8
eootHK
package org.rut.util.algorithm.support; ]$4DhB
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import org.rut.util.algorithm.SortUtil; #pe#(xoI
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/** 6"OwrJB
* @author treeroot ]npsclvJ
* @since 2006-2-2 .dbZ;`s
* @version 1.0 %S'gDCwq
*/ 0@O:C::
public class ImprovedQuickSort implements SortUtil.Sort { >g {w,
( o(, ;
private static int MAX_STACK_SIZE=4096; }jfOs(Q]
private static int THRESHOLD=10; ,sa%u Fm
/* (non-Javadoc) -[h2fqu1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?.A~O-w
*/ HITw{RPrW
public void sort(int[] data) { !Dc|g~km\
int[] stack=new int[MAX_STACK_SIZE]; V:YN!
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int top=-1; RWX?B
int pivot; QsO%m
int pivotIndex,l,r; \/wbk`2
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stack[++top]=0; Q+i
stack[++top]=data.length-1; CXAW>VdK_
uPbGQ :%}
while(top>0){ ls;!Og9
int j=stack[top--]; 5]c\{G
int i=stack[top--]; B IW?/^
y Tb OBl
pivotIndex=(i+j)/2; lR<1x
pivot=data[pivotIndex]; [|5gw3y
\H^A@f
SortUtil.swap(data,pivotIndex,j); X&bz%I>v
nq/SGo[c
file://partition iNlY\67sW
l=i-1; ?"+g6II
r=j; cZb5h 9
do{ >.xgo6
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); $;J:kd;<
SortUtil.swap(data,l,r); '5f6
M^}|2
} 7o99@K,
while(l SortUtil.swap(data,l,r); :l;SG=scx
SortUtil.swap(data,l,j); w3<%wN>tE
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if((l-i)>THRESHOLD){ ?q*,,+'0
stack[++top]=i; PLV-De
stack[++top]=l-1; ]ChGi[B~9
} ]%Db %A
if((j-l)>THRESHOLD){ :`Z'vRj
stack[++top]=l+1; m9Pzy^g1
stack[++top]=j; ,f[`C-\Q%
} 3*v&6/K
C"gH>G
} gP13n!7
file://new InsertSort().sort(data); '(6
^O=
insertSort(data); >V,i7v*?
} Z=I+_p_G
/** jYxmU8
* @param data qQ{i2D%)?f
*/ +YX*.dW
private void insertSort(int[] data) { xY=%+o.?*
int temp; LQo>wl
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); xQ]^wT.Q
} #~JR_oQE!
} <@](uWu
} n>o0PtGxC
5bZjW~d
} e,X{.NS
yu.N> [=
归并排序: ~%D=\iE
K^yZfpa8
package org.rut.util.algorithm.support; @p\te7(P%
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import org.rut.util.algorithm.SortUtil; +lNAog
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/** -Uo"!o>x|
* @author treeroot ;+Sc Vz
* @since 2006-2-2 NDo>"in
* @version 1.0 qt.Y6s:r_
*/ .wPu
#*
public class MergeSort implements SortUtil.Sort{ |bM?Q$>~
Cvgk67C=$
/* (non-Javadoc) .B? J@,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9^zA(
*/ oScKL#Hu
public void sort(int[] data) { tB<2mjg
int[] temp=new int[data.length]; v-MrurQ4
mergeSort(data,temp,0,data.length-1); T!ik"YZ@i
} 'VQ
mK#
0{k*SCN#
private void mergeSort(int[] data,int[] temp,int l,int r){ 4f-I,)qCBk
int mid=(l+r)/2; bkSI1m3
if(l==r) return ; W*!u_]K>
mergeSort(data,temp,l,mid); >>I~v)a>w
mergeSort(data,temp,mid+1,r); \)/dFo\l
for(int i=l;i<=r;i++){ BK[ YX)
temp=data; 9C"d7--
} lDf:~
int i1=l; IV]2#;OO?
int i2=mid+1; %I^y@2A4`
for(int cur=l;cur<=r;cur++){ |K11Woii
if(i1==mid+1) Y )](jU%o
data[cur]=temp[i2++]; =K`]$Og}8
else if(i2>r) FJC}xEMcN
data[cur]=temp[i1++]; ?,AWXiif
else if(temp[i1] data[cur]=temp[i1++]; &`}8Jz=S
else T/YvCbo
data[cur]=temp[i2++]; 2`V[Nb
} `U6bI`l
} .8~zgpK
PpWn+''M
} ,enU`}9V*
=AVr<kP
改进后的归并排序: XT<{J8
0z
cq,8^o&
package org.rut.util.algorithm.support; <ZwmXD.VD
Rct=vDU
import org.rut.util.algorithm.SortUtil; 8(kP=
G8hq;W4@]/
/** c)Ep<W<r1
* @author treeroot wx*)7Y*
* @since 2006-2-2 d~za%2{
* @version 1.0 Yd>ej1<
*/ a]%>7yr4
public class ImprovedMergeSort implements SortUtil.Sort { enw7?| (
3w!,@=.q
private static final int THRESHOLD = 10;
B Sc5@;
8^U+P%
/* 863PVce",}
* (non-Javadoc) =zXA0%
* I7@g,~s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kM o7mkV
*/ 3B6"T;_
public void sort(int[] data) { laX67Vjv
int[] temp=new int[data.length]; )m4O7'2G
mergeSort(data,temp,0,data.length-1); |h{#r7H0
} 9+"\7MHw
YjTA+1}
private void mergeSort(int[] data, int[] temp, int l, int r) { kE*OjywN
int i, j, k; MET"s.v
int mid = (l + r) / 2; "U6:z M
if (l == r) go[(N6hN
return; X{-[
E^X
if ((mid - l) >= THRESHOLD) qR>"r"Fq
mergeSort(data, temp, l, mid); D8r=Vf
else ??g `c=R!V
insertSort(data, l, mid - l + 1); hrZ=8SrW
if ((r - mid) > THRESHOLD) se, 0Rvkt
mergeSort(data, temp, mid + 1, r); 7$/%c{o
else Kulh:d:w
insertSort(data, mid + 1, r - mid); HyX:4f|]'
rZSX fgfr
for (i = l; i <= mid; i++) { -)dS`hM
temp = data; Ua](o H
} H6! <y-
for (j = 1; j <= r - mid; j++) { A"W}l)+X
temp[r - j + 1] = data[j + mid]; 7$HN5T\!
} xZpGSlA
int a = temp[l]; W%.ou\GN^t
int b = temp[r]; p#6V|5~8
for (i = l, j = r, k = l; k <= r; k++) { Ad'b{C%
if (a < b) { du0]LiHV
data[k] = temp[i++]; tM&;b?bJ[
a = temp; o;\c$|TNU
} else { U2@Mxw
data[k] = temp[j--]; DD(K@M
b = temp[j]; @*}?4wU^k
} WG\gf\= I
} F>!gwmn~
} Mq[|w2.
<6L=% \X{*
/** 1;$8=j2
* @param data $,v[<T`
* @param l !(L\X'jH
* @param i ulzQ[?OMl
*/ (RtjD`e}
private void insertSort(int[] data, int start, int len) { `x'vF#
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); sKU?"|G81G
} LG6k
KG
} ( 8}'JvSu
} +CF"Bm8@
} -'jPue2\
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堆排序: .o!z:[IPY
FA#?+kd
package org.rut.util.algorithm.support; ! !9l@
V`;$Ua;y
import org.rut.util.algorithm.SortUtil; MlBw=Nr
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/** tq^d1b(j4
* @author treeroot <GthJr>1D
* @since 2006-2-2 u^{6U(%
* @version 1.0 (b}}'
*/ =Lyo]8>,X
public class HeapSort implements SortUtil.Sort{ Nr(3!-
/Wqx@#
/* (non-Javadoc) jj&4Sv#>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1G6MO
*/ |>2IgTh1a
public void sort(int[] data) { zLa3Q\T
MaxHeap h=new MaxHeap(); buv*qPO
h.init(data); ^twJNm{99
for(int i=0;i h.remove(); ".=LzjE<gv
System.arraycopy(h.queue,1,data,0,data.length); 5W29oz}-S
} S5$sB{\R
D#?jddr-
private static class MaxHeap{ ju= +!nGUa
>.]'N:5
void init(int[] data){ QV@NA@;XZ
this.queue=new int[data.length+1]; djxM/"xo
for(int i=0;i queue[++size]=data; |0jmOcZF
fixUp(size); !^/Mn
} ZX
Sl+k.
} p>c` GDU
8!c#XMHV
private int size=0; ,%a7sk<5k
hDf|9}/UQd
private int[] queue; ;C+g)BW
nHB=*Mj DV
public int get() { ;N FTdP
return queue[1]; =b* Is,R/
} .M$}.v
Z_F}Y2-w9
public void remove() { ~SW_jiKM
SortUtil.swap(queue,1,size--); }}VB#
fixDown(1); jD
eNCJ
} %%w/;o!c
file://fixdown S_B $-H|
private void fixDown(int k) { tKik)ei
int j; `S{Blv
while ((j = k << 1) <= size) { R1%2]?
if (j < size %26amp;%26amp; queue[j] j++; 22<T.c
if (queue[k]>queue[j]) file://不用交换 u?>]C6$
break; vFL\O
SortUtil.swap(queue,j,k); 27NhYDo
k = j; >,JA=s
} bxS+ R\
} D3>;X= 1
private void fixUp(int k) { D<m+M@u
while (k > 1) { D =Pv:)*]
int j = k >> 1; a V4p0s6ZZ
if (queue[j]>queue[k]) u*<G20~A
break; K^_Mt!%
SortUtil.swap(queue,j,k); P2+Z^J`Y>
k = j; h]#wwJF
} 7fOk]Yl[
} tv+H4/
N~%F/`Z<+
} ~alC5|wCUQ
':v@Pr|
} MR/8
$6c8<!B_
SortUtil: Z{|U!tn
H9^DlIv('
package org.rut.util.algorithm; ;'B\l@U\
~$zodrS9
import org.rut.util.algorithm.support.BubbleSort; Uv-xP(X
import org.rut.util.algorithm.support.HeapSort; p$5+^x'(
import org.rut.util.algorithm.support.ImprovedMergeSort; c
4<~?L
import org.rut.util.algorithm.support.ImprovedQuickSort; K`9ph"(Z
import org.rut.util.algorithm.support.InsertSort; :PrQ]ss@C5
import org.rut.util.algorithm.support.MergeSort; !U@?Va~Zn
import org.rut.util.algorithm.support.QuickSort; E,#J\)'z
import org.rut.util.algorithm.support.SelectionSort; `+!GoXI
import org.rut.util.algorithm.support.ShellSort; M=}vDw]Q
}wJDHgt]-p
/** )7e[o8O_6
* @author treeroot `z=I}6){
* @since 2006-2-2 \?bp^BrI
* @version 1.0 0$n0fu
*/ rSYzrVc
public class SortUtil { ?\QEK
public final static int INSERT = 1; ~ "]6
public final static int BUBBLE = 2; 8%UI<I,
public final static int SELECTION = 3; 2[\I{<2/9
public final static int SHELL = 4; 7DU"QeLeb
public final static int QUICK = 5; 3zO'=gwJ
public final static int IMPROVED_QUICK = 6; 0aMw
public final static int MERGE = 7; +M+ht
public final static int IMPROVED_MERGE = 8; axl!zu*
public final static int HEAP = 9; BVx: JiA
M~/%V NX
public static void sort(int[] data) { 0Wf,SYx`s
sort(data, IMPROVED_QUICK); V01-n{~G
} K#=)]qIk
private static String[] name={ HS|X//]
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" N{]|!#
}; 4JTFdbx
D3LW49
private static Sort[] impl=new Sort[]{ %5=XszS
new InsertSort(), DcN s`2
new BubbleSort(), G_wzUk=L
new SelectionSort(), V}#2pP
new ShellSort(), H4HWr6
new QuickSort(), fz`+j
-u
new ImprovedQuickSort(), "tgaFtC=w
new MergeSort(), |M?yCo
new ImprovedMergeSort(), =H_|007C
new HeapSort() [TPr
}; (ia(y(=C
{]\QUXH
public static String toString(int algorithm){ =TDK$Ek
return name[algorithm-1]; BfLh%XC
} qY24Y
>Xq:?}-m2
public static void sort(int[] data, int algorithm) { +"!,rZ7,A
impl[algorithm-1].sort(data); _5^p+
} V`KXfY
=OIxG}*
public static interface Sort { Ix,`lFbH
public void sort(int[] data); N#')Qz:P
} Go}C{(4T
I$4GM
public static void swap(int[] data, int i, int j) { _LV;q! /j
int temp = data; =Tf
uwhV
data = data[j]; af]&3(33
data[j] = temp; *`:zSnu
} iPMI$
} eKlh }v