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。 ]3d5kf
插入排序: gp-rTdN
a *qc
package org.rut.util.algorithm.support; 87rHW@\](
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import org.rut.util.algorithm.SortUtil; 2XrYm"6w
/** zKQXmyO
* @author treeroot c@lH
* @since 2006-2-2 [Uw3.CVh
* @version 1.0 Mo]
*/ d5'4RYfkQ
public class InsertSort implements SortUtil.Sort{ !=?Q>mz
}tbZ[:T{K
/* (non-Javadoc) |u.3Tp|3W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QG
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*/ g2 tM!IRQ
public void sort(int[] data) { ;FnS=Z
int temp; WfYC`e7q
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )D"2Q:
} v[~Q
} ?I7%ueFY
} B<jVo%og
R) J/z
} }LryRcrD-n
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冒泡排序: U98e=57N
9-EdT4=r,
package org.rut.util.algorithm.support; V1\Rj0#G
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import org.rut.util.algorithm.SortUtil; O5ZR{f&
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/** Q+dLWFI
* @author treeroot AdWP
* @since 2006-2-2 Is>~ P*2Y=
* @version 1.0 U,V+qnS
*/ ;rC< C
public class BubbleSort implements SortUtil.Sort{ $spk.j
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/* (non-Javadoc) uE'Kk8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RP%FMb}nt
*/ LUEZqIf
public void sort(int[] data) { [{6fyd;
int temp; vOU9[n
N[
for(int i=0;i for(int j=data.length-1;j>i;j--){ :_pn|
if(data[j] SortUtil.swap(data,j,j-1); Q@/Z~xw"'I
} 8>[o.xV
} >n jX=r.
} y>] Yq-
}
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} v8>bR|n5
AL*M`m_
选择排序: u_6x{",5I
Jm,tN/o*
package org.rut.util.algorithm.support; &e99P{\D
!rff/0/x"
import org.rut.util.algorithm.SortUtil; _z53r+A
j7b 4wH\#
/** Xn%O .yM6
* @author treeroot "X\6tl7a|
* @since 2006-2-2 H4uHCkj
* @version 1.0 ZC3;QKw>
*/ 0HDL;XY6
public class SelectionSort implements SortUtil.Sort { 3+H[S#e:Z
@j=rSS
/* n"f:6|<
* (non-Javadoc) j>#ywh*A
* 9S8V`aC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TnJNs
*/ C;']FmK]
public void sort(int[] data) { VTK +aI
int temp; /#!1
for (int i = 0; i < data.length; i++) { *@g>~q{`
int lowIndex = i; Gq{ );fq
for (int j = data.length - 1; j > i; j--) { l]S% k&
if (data[j] < data[lowIndex]) {
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lowIndex = j; HH|N~pBJB
} 5?8jj
} o`{^ptu1q
SortUtil.swap(data,i,lowIndex); \12y,fOJ
} v>sjS3
} U P*5M
?P(U/DS8
} U2jlDx4yg
nRcy`A%
Shell排序: 5QZ}KNJ|t~
d t^Hd]+^\
package org.rut.util.algorithm.support; f s2}a
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import org.rut.util.algorithm.SortUtil; r>J%Eu/O
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/** nT=XWM
* @author treeroot ~xf uq{L;
* @since 2006-2-2 KU;J2Kt
* @version 1.0 [H{2<!
*/ C9n*?Mk:
public class ShellSort implements SortUtil.Sort{ TsY
nsLQY
YB376/
/* (non-Javadoc) oT"7O5v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DUb8 HgcV}
*/ co{i~['u
public void sort(int[] data) { op61-:q/
for(int i=data.length/2;i>2;i/=2){ 6yd?xeD
for(int j=0;j insertSort(data,j,i); vPD%5AJN
} HEm XB=
} Wcki=ac\v!
insertSort(data,0,1); Ys8D|HIk
} ;:'A Bfs
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/** a"phwCc"%
* @param data Z5,"KhB]
* @param j JdX!#\O
* @param i t!o=-k
*/ Q$A;Fk}-
private void insertSort(int[] data, int start, int inc) { .7> g8
int temp; k\A4sj
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); jfpbD
/
} E6#")2C~
} lfqsoIn;
}
/~pB_l
C;oO=R3r
} e(vnnv?R{
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快速排序: CgKFI
*kt%.wPJ
package org.rut.util.algorithm.support; fr8hT(,s)
n,Q^M$mS0
import org.rut.util.algorithm.SortUtil; O}X@QG2_
VN]j*$5
/** o_cAelI[!
* @author treeroot eOJ_L]y-
* @since 2006-2-2 `bW0Va
N
* @version 1.0 )|KZGr
*/ R*VEeLx
public class QuickSort implements SortUtil.Sort{ (>`S{L
C>s
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/* (non-Javadoc) LXm@h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /l;_ xs
*/ )u]1j@Id
public void sort(int[] data) { #=#bv`
quickSort(data,0,data.length-1); C^*}*hYk$
} -+kTw06_C
private void quickSort(int[] data,int i,int j){ @-.Tgpe@a
int pivotIndex=(i+j)/2; ;R^=($ X
file://swap _g6H&no[
SortUtil.swap(data,pivotIndex,j); k]S`A,~
.5iXOS0
G
int k=partition(data,i-1,j,data[j]); yH]w(z5Z
SortUtil.swap(data,k,j); 8r48+_y3u
if((k-i)>1) quickSort(data,i,k-1); s"(F({J
if((j-k)>1) quickSort(data,k+1,j); J/\^3rCB
,AG k4]
} T 2Gscey
/** pXK-,7-
* @param data (} Y|^uM,
* @param i spTIhZ
* @param j 6&,9=(:J&R
* @return ~>rnq7j
*/ ;ApldoMi
private int partition(int[] data, int l, int r,int pivot) { % E8s>D
do{ V@\A<q%jTs
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot);
e%^PVi
SortUtil.swap(data,l,r); Pl&x6\zL
} dl+:u}9M$
while(l SortUtil.swap(data,l,r); 6nW]Q^N}
return l; a6hDw'8!
} B0,C!??5
%[BOe4[
} /m h #o
GW0e=Y=LR
改进后的快速排序: A4Tjfc,rx9
pI}6AAs}Z
package org.rut.util.algorithm.support; OK%d1M^8j
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import org.rut.util.algorithm.SortUtil; e]D TK*W~
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/** TCK<IZKLqK
* @author treeroot .ViOf){U\
* @since 2006-2-2 n(j5dN>]
* @version 1.0 /,JL \b
*/ (~]0)J
public class ImprovedQuickSort implements SortUtil.Sort { {r_x\VC=p
@%I-15Jz
private static int MAX_STACK_SIZE=4096; j0A9;AP;;C
private static int THRESHOLD=10; CMU\DO
/* (non-Javadoc) j "e]Ui
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JF(&+\i<p
*/ #=czqZw
public void sort(int[] data) { -"d&Ow7o
int[] stack=new int[MAX_STACK_SIZE]; -x+K#T0Z
d ZxrIWx
int top=-1; MR.c?P?0Q
int pivot; f#
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int pivotIndex,l,r; Ummoph7_@
Y
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stack[++top]=0; :F?L,I,K
stack[++top]=data.length-1; @}hdMVi
I?KGb:]|
while(top>0){ Q,nXc
int j=stack[top--]; +]0/:\(B
int i=stack[top--]; FTcXjWBPF9
2I0Zr;\f
pivotIndex=(i+j)/2; @c;:D`\p1C
pivot=data[pivotIndex]; R&MetQ~-{
im"3n=
SortUtil.swap(data,pivotIndex,j); } /aqh ;W
077 wk
file://partition ~)
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l=i-1; 7t|011<
r=j; sEcg;LFp
do{ pZ&?uo67_
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Df=Xbf>jt9
SortUtil.swap(data,l,r); HA3d9`
} ~jMfm~
while(l SortUtil.swap(data,l,r); E/3<8cV
SortUtil.swap(data,l,j); u*8x.UE8C0
/`b`ai8`8
if((l-i)>THRESHOLD){ C ,[q#D4
stack[++top]=i; sdXZsQw
stack[++top]=l-1; FXFyF*w2
} 1_5]3+r_U-
if((j-l)>THRESHOLD){ b}Wm-]|+
stack[++top]=l+1; hus k\
stack[++top]=j; q82yh&
} H1hADn
Z1R{'@Y0Z
} aa/_:V@$~
file://new InsertSort().sort(data); ,W5!=\Gg(
insertSort(data); 2\9OT>
} KvtJtql;
/** '?qI_LP?
* @param data i`7:^v;
*/ 7>xfQ
private void insertSort(int[] data) { }/M`G]wT#
int temp; ?Y_!Fr3V
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :KBy(}V
} %)P)Xb
} <L:}u!
} mEq>{l:
3(=QY)
} MbyV_A`r_
zC>zkFT>H
归并排序: m" c6^)U
HKG8X="
package org.rut.util.algorithm.support; zQx6r
.
.[S\&uRv
import org.rut.util.algorithm.SortUtil; I$JyAj
_E4_k%8y
/** a`8svo;VUO
* @author treeroot (\CH;c-@
* @since 2006-2-2 F tay8m@f
* @version 1.0 koy0A/\%
*/ -5<G^AS
public class MergeSort implements SortUtil.Sort{ ?T_bjALW
+"JQ5~7
/* (non-Javadoc) RwDXOdgu
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MsjC4(Xla.
*/ YAYwrKt
public void sort(int[] data) {
c->?'h23)
int[] temp=new int[data.length]; {h~<!sEX
mergeSort(data,temp,0,data.length-1); Y&1Yc)*O
} QHw{@*
bipA{VU
private void mergeSort(int[] data,int[] temp,int l,int r){ t9[%o=N~lD
int mid=(l+r)/2; YL9Tsw
if(l==r) return ; XrN]}S$N
mergeSort(data,temp,l,mid); X{;5jnpG
mergeSort(data,temp,mid+1,r); CzG/=#IU
for(int i=l;i<=r;i++){ (]sk3
A
temp=data; R/kfbV-b
} m";?B1%x
int i1=l; 'Jl3%axR
int i2=mid+1; 15"[MX A
for(int cur=l;cur<=r;cur++){ D<(VP{,G
if(i1==mid+1) JJu}Ed_
data[cur]=temp[i2++]; Vl0Y'@{
else if(i2>r) e)A{
{wD/
data[cur]=temp[i1++]; !&5B&w{u~!
else if(temp[i1] data[cur]=temp[i1++]; Jb]22]
else Wo<kKkx2
data[cur]=temp[i2++]; :0(:}V3 z\
} CC XOxd
} 1'SpJL1u~
)C%S`d<%,
} g/`z.?
K#a_7/!v/
改进后的归并排序: rwY{QBSf
Z]=9=S|
.4
package org.rut.util.algorithm.support; ,<<HkEMS
&|c] U/_w
import org.rut.util.algorithm.SortUtil; RbJbVFz8C
q]OgT4ly
/** 8t1,_,2'
* @author treeroot 9~yp=JOV@
* @since 2006-2-2 a\Dw*h?b~
* @version 1.0 I_On0@%T5b
*/ bh UghHT
public class ImprovedMergeSort implements SortUtil.Sort { Rmh u"N/q
<k7q9"\4
private static final int THRESHOLD = 10; J|N>}di
HOlMj!.
/* 4nGr?%>
* (non-Javadoc) 8|-064i>
* 95oh}c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <O9.GHV1v
*/ w"A%@<V3Ec
public void sort(int[] data) { k~pbXA*u
int[] temp=new int[data.length]; Nj`Miv o
mergeSort(data,temp,0,data.length-1); o&Sv2"2
} `&>CK`%Xu
m'5rzZP
private void mergeSort(int[] data, int[] temp, int l, int r) { <R8!fc{`
int i, j, k; x<h-F
int mid = (l + r) / 2; O%rt7qV"g2
if (l == r) Tg/rV5@ka
return; 07A2@dx
if ((mid - l) >= THRESHOLD) l5,}yTUta
mergeSort(data, temp, l, mid); bb"x^DtT
else L+TM3*a*
insertSort(data, l, mid - l + 1); zq4)Uab*
if ((r - mid) > THRESHOLD) znu[i&\=
mergeSort(data, temp, mid + 1, r); i`" L?3T
else yMBFw:/o
insertSort(data, mid + 1, r - mid); WkK.ON^
I>45xVA
for (i = l; i <= mid; i++) { 'tun;Y
temp = data; 8u bb~ B;
} dJUI.!hv;
for (j = 1; j <= r - mid; j++) { )}5f'TK
temp[r - j + 1] = data[j + mid]; O
-N>
X
} =-8y=
int a = temp[l]; )GF>]|CG
int b = temp[r]; Dp"
xO<PE2
for (i = l, j = r, k = l; k <= r; k++) { eHHqm^1z
if (a < b) { (vr
v-4
data[k] = temp[i++]; 6;hZHe 'W
a = temp; %XK<[BF
} else { \%/zf
data[k] = temp[j--]; 6'QlC+E
b = temp[j]; j[\aGS7u
} s14; \
} XyE%<]
} qjVhBu7A
iV8O<en&i
/** <[<]+r&*
* @param data pPtw(5bH
* @param l +*P;Vb6 D
* @param i yB,{:kq7D
*/ :gacP?
private void insertSort(int[] data, int start, int len) { /2AeJH\-
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Q>[GD(8k
} %2`geN<
} wNhtw'E8
} zHW}A
`Rz
} ,.PmH.zjmR
?ZlN$h^
堆排序: CAV
Q[r5y
*"K7<S[
package org.rut.util.algorithm.support; 'Z ,T,zW
g;PZ$|%&s>
import org.rut.util.algorithm.SortUtil; BSbi.@@tp
T1c.ER}17
/** jq"iLgEMO
* @author treeroot 6qp'
_?
* @since 2006-2-2 NlV,]
$L1T
* @version 1.0 F~${L+^
*/ !ie'}|c
public class HeapSort implements SortUtil.Sort{ $09PZBF,i
/J` ZO$
/* (non-Javadoc) 8lcB.M
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '*,P33h9<!
*/ -p2 =?a
public void sort(int[] data) { f+j-M|A
MaxHeap h=new MaxHeap(); (DrDWD4_
h.init(data); ~q05xy8
for(int i=0;i h.remove(); /E0/)@pDq
System.arraycopy(h.queue,1,data,0,data.length); )#_:5^1
} qLh[BR
(L7@ez
private static class MaxHeap{ T|FF&|Pk
E]IPag8C
void init(int[] data){ CPS1b
this.queue=new int[data.length+1]; t+`>zux5(T
for(int i=0;i queue[++size]=data; r>gU*bs(
fixUp(size); (jB_uMuS
} -Rz%<`
} biw2f~V
g_F-PT>($
private int size=0; +axpIjI'
VUE6M\&z>
private int[] queue; q'~F6$kv5
p{k^)5CR/
public int get() { 3 h~U)mg
return queue[1]; 4c/.#?
} (S4[,Sx6E
CEr*VsvjsU
public void remove() { gm}[`GMU
SortUtil.swap(queue,1,size--); yQM<(;\O
fixDown(1); Da8{==
} ~*,e &I
file://fixdown 1#2B1&
private void fixDown(int k) { M~k2Y$}R
int j; 4ZN&Yf`
while ((j = k << 1) <= size) { js<}>wD7<
if (j < size %26amp;%26amp; queue[j] j++; Msea kF
if (queue[k]>queue[j]) file://不用交换 G'qGsKf\
break; ;]+p>p-#
SortUtil.swap(queue,j,k); V]I+>Zn| 7
k = j; ??tNMr5{[
} _pS!sY~d
} 7y2-8eL
private void fixUp(int k) { L-v-KO6
while (k > 1) { K4>nBvZ?v
int j = k >> 1; >4N=P0=
if (queue[j]>queue[k]) (fJ.o-LQ
break; +rA:/!b)Y
SortUtil.swap(queue,j,k); 6V@?/B
k = j; ?}g#Mc
} )]~;Ac^x
} ~GZpAPg*
2%F!aeX
} N)H
_4L
ek3,ss3
} ^w*$qzESy
Zc Y* TGx
SortUtil: 21\t2<"
!O-9W=NJ
package org.rut.util.algorithm; Skn2-8;10
7,![oY[
import org.rut.util.algorithm.support.BubbleSort; ahJu+y
import org.rut.util.algorithm.support.HeapSort; !W ,pjW%Y
import org.rut.util.algorithm.support.ImprovedMergeSort; |zaYIVE[
import org.rut.util.algorithm.support.ImprovedQuickSort; e//q`?ys
import org.rut.util.algorithm.support.InsertSort; E:C-k^/[Y
import org.rut.util.algorithm.support.MergeSort; )Ap0" ?q
import org.rut.util.algorithm.support.QuickSort; sF=8E8qa
import org.rut.util.algorithm.support.SelectionSort; D+:} D*_&
import org.rut.util.algorithm.support.ShellSort;
t/HUG#W{
%ymM#5A
/** j%y)%4F8
* @author treeroot yA#-}Y|]b
* @since 2006-2-2 >
l@o\
* @version 1.0 wK[Xm'QTPJ
*/ xf?6_=
public class SortUtil { t:h~p-&QB
public final static int INSERT = 1; B1C"F-2d
public final static int BUBBLE = 2; $sX X6K),
public final static int SELECTION = 3; 82bOiN15
public final static int SHELL = 4; `mfN3Q*[c
public final static int QUICK = 5; c8
xZT
public final static int IMPROVED_QUICK = 6; d].(x)|st
public final static int MERGE = 7; Gap\~Z@L
public final static int IMPROVED_MERGE = 8; ' Oe}Ja
public final static int HEAP = 9; "ccP,#Y
~dO&e=6Hk
public static void sort(int[] data) { z2GT9
sort(data, IMPROVED_QUICK); u3>Dvl@
} s{]2~Z^2od
private static String[] name={ a#qC.,$A
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" edW:(19}
}; Z}
8m]I
0f<$S$~h
private static Sort[] impl=new Sort[]{ ee=d*)
new InsertSort(), <&$:$_ah
new BubbleSort(), a &89K
new SelectionSort(), &74*CO9B9
new ShellSort(), qU) pBA
new QuickSort(), Q]u*Oels
new ImprovedQuickSort(), #ir~v>J||
new MergeSort(), jcT
new ImprovedMergeSort(), CAPPOh
new HeapSort() @9wug!,
}; ;1&7v
Gpauy=4f
public static String toString(int algorithm){ %HNe"7gk
return name[algorithm-1]; 6_w;dnVA
} FLI0C
q ["T6
public static void sort(int[] data, int algorithm) { ~/B[;#
impl[algorithm-1].sort(data); {U,q!<@mq
} 5l&9BS&
4X5Tyv(Dp
public static interface Sort { EZ.|6oug\
public void sort(int[] data); Yc*Ex-s
} @%5$x]^
NzP5s&,C69
public static void swap(int[] data, int i, int j) { 9mT;>mE
int temp = data; =[$zR>o*%
data = data[j]; *:*Kdt`'G
data[j] = temp; o y'GAc/
} pd[?TyVK;
} kdX]Afyj