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。 An2>]\L
插入排序: z?/_b
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package org.rut.util.algorithm.support; 3(YvqPp&
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import org.rut.util.algorithm.SortUtil; :!gNOR6Lh
/** CmEqo;Is
* @author treeroot tE*BZXBlm
* @since 2006-2-2 ||+~8z#+,
* @version 1.0 2mLZ4r>WE
*/ @K;b7@4y
public class InsertSort implements SortUtil.Sort{ `}X3f#eO&
5F kdGF
/* (non-Javadoc) F5)`FM^R
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x&B&lFmo8
*/ }#z1>y!#
public void sort(int[] data) { ?v^NimcZ
int temp; M/ S~"iD
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4o>y9
} Vl.,e1)6
} :Cq73:1\B
} NuZ2,<~9
Dfs^W{YA
} =VC18yA
I}f`iBG
冒泡排序: @SfQbM##%
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package org.rut.util.algorithm.support; 96WzgHPWo
xGs}hVlZiC
import org.rut.util.algorithm.SortUtil; <kB:`&X<\
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/** fCt|8,-H
* @author treeroot NcA
`E_3
* @since 2006-2-2 ljFq ;!I5
* @version 1.0 2z>-H595az
*/ ;"dX]":
public class BubbleSort implements SortUtil.Sort{ }*fBHzNN
'9\cIni0
/* (non-Javadoc) v9(5HY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \Vc[/Qp7Bb
*/ rr#nBhh8
public void sort(int[] data) { OG$n C
int temp; <rC%$tr
for(int i=0;i for(int j=data.length-1;j>i;j--){ U>tR :)
if(data[j] SortUtil.swap(data,j,j-1); $;v! ,>
} ?(ORk|)kU
} Zue3Z{31T
} OP/DWf
} JFv70rBe
$dfc@Fn^x
} T//xxH]w-
kn3w6]
选择排序: RELNWr
<4rnOQ:
package org.rut.util.algorithm.support; p)biOG
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import org.rut.util.algorithm.SortUtil; $dM_uSt
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/** Vh-8pFt
* @author treeroot HT<p=o'$Z
* @since 2006-2-2 x`E<]z*w}
* @version 1.0 mTe3%( LD
*/ "ESc^28
public class SelectionSort implements SortUtil.Sort { )KZMRAT-
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/* ]B>76?2W
* (non-Javadoc) !MoAga_
j
* t6Iy5)=zY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BU -;P
*/ bEcs(Mc~
public void sort(int[] data) { |[],z 8
int temp; t/ \S9
for (int i = 0; i < data.length; i++) { WI\a
int lowIndex = i; @$
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for (int j = data.length - 1; j > i; j--) { @=kgK[t
9
if (data[j] < data[lowIndex]) { ky2]%cw
lowIndex = j; ~'M<S=W
} 21TR_0g&<
} u
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SortUtil.swap(data,i,lowIndex); L{/%
"2>
} O Z
./suR)
} jNj;#C)
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} etX@z'H
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Shell排序: /&Q{B f
TcZ.5Oe6h#
package org.rut.util.algorithm.support; >pu4 G+M
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import org.rut.util.algorithm.SortUtil; T0 K!Msz
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/** ]I|(/+}M
* @author treeroot S]3CRJU3`
* @since 2006-2-2 ]bds~OY5 U
* @version 1.0 l"ms:v
*/ B[8bkFS>]
public class ShellSort implements SortUtil.Sort{ s{b\\$Rb
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/* (non-Javadoc) O9daeIF0#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GDSV:]hL
*/ 8"%Es
public void sort(int[] data) { Q6m8N
for(int i=data.length/2;i>2;i/=2){ q|*^{(tWs
for(int j=0;j insertSort(data,j,i); 3(e_2v
} NP;W=A F
} 0AHQ(+Ap
insertSort(data,0,1); tV!?Ol
} ^PEw#.WG
"Z&.m..gc
/** v,i|:;G
* @param data 4jXo5SkEJ
* @param j &
/8Tth86
* @param i gqS9 {K(f
*/ 0+SDFh
private void insertSort(int[] data, int start, int inc) { tWn
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int temp; a&>NuMDI
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); QIiy\E%
} h0<PQZJ
} ROFZ*@CH<
} xhP~]akHN7
"3^tVX%$\[
} 9FDu{4:
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快速排序: F! =l
r
+W4}&S
package org.rut.util.algorithm.support; OZ\6qMH3e
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import org.rut.util.algorithm.SortUtil; Mj;V.Y
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/** W6<oy
* @author treeroot F! !HwI
* @since 2006-2-2 >!Yuef
<P
* @version 1.0 Cd*h4Q]S
*/ UDEGQ^)Xz|
public class QuickSort implements SortUtil.Sort{ Y,s EM%
f$dPDbZQ
/* (non-Javadoc) Oc L7] b0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e|Ri
*/ m(8Tup|
public void sort(int[] data) { <>6j>w_|
quickSort(data,0,data.length-1); u1/>)_U
} b,Wm]N
private void quickSort(int[] data,int i,int j){ =zFROB\
int pivotIndex=(i+j)/2; AJ7w_'u=@
file://swap %)j&/QdzF&
SortUtil.swap(data,pivotIndex,j); v@$N,g
CyIlv0fd}
int k=partition(data,i-1,j,data[j]); FMdu30JV
SortUtil.swap(data,k,j); ! AwMD
if((k-i)>1) quickSort(data,i,k-1); uG\~Hxqw7O
if((j-k)>1) quickSort(data,k+1,j); ~
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y?OP- 27y
} \:;MFG'
/** irQ'Rm[
* @param data 6\8d6x>
* @param i ILm+o$o~
* @param j f=^xU
P
* @return 4<Vi`X7[F
*/ M
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private int partition(int[] data, int l, int r,int pivot) { cK'g2S
do{ !Ubm 586!
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); g, d_
SortUtil.swap(data,l,r); kGD_w
} rxyv+@~Nc
while(l SortUtil.swap(data,l,r); (p2`ofj
return l; :u4|6?
} AA5G`LiT
Um+_S@h
} DZ|*hQU>K
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改进后的快速排序: w*`:v$
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package org.rut.util.algorithm.support; |2do8z
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import org.rut.util.algorithm.SortUtil; ZeV@ X
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/** ZN8j})lE
* @author treeroot # `=Zc7gf
* @since 2006-2-2 =2&\<Q_Fi
* @version 1.0 NQqw|3
*/ %"`p&aE:
public class ImprovedQuickSort implements SortUtil.Sort { jt}Re,
xJ3C^b%H
private static int MAX_STACK_SIZE=4096; FQ>$Ps*a[
private static int THRESHOLD=10; ]ogifnwv
/* (non-Javadoc) $5pCfW8>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZO/e!yju
*/ r(r(&NU
public void sort(int[] data) { 7 z
int[] stack=new int[MAX_STACK_SIZE]; 8C{&i5kj\E
UPH#~D!
int top=-1; .,u>WIUxj
int pivot; OQumAj
int pivotIndex,l,r; eu5te0{G
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stack[++top]=0; rf0Z5.
stack[++top]=data.length-1; <)ZQRE@
|5vcT,A
while(top>0){ <ww D*t
int j=stack[top--]; c+l1l0BA
int i=stack[top--]; ZuGSR GX'
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pivotIndex=(i+j)/2; EA~xxKq
pivot=data[pivotIndex]; d[t0K]
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SortUtil.swap(data,pivotIndex,j); Q# hRnM
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file://partition !` 1h *}
l=i-1; e=9/3?El
r=j; i\CA6I
do{ 7RT{RE
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); wm@j(h4
SortUtil.swap(data,l,r); Onx6Fy]L
} 3#t9pI4
while(l SortUtil.swap(data,l,r); $$ND]qM$M
SortUtil.swap(data,l,j); #ksDU
$^Xxn.B9
if((l-i)>THRESHOLD){ ~) ;4O8~.
stack[++top]=i; ~DD
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stack[++top]=l-1; "]"0d[d
} kZF]BPh.
if((j-l)>THRESHOLD){ \oPe"k=
stack[++top]=l+1; _4>DuklH,
stack[++top]=j; w"0$cL3
} br=e+]C Y)
!sX$?P%U
} jnqp"
Ult>
file://new InsertSort().sort(data); LGL;3EI
insertSort(data); +c_AAMe
} (GRW(Zd4
/** ~k34#j:J65
* @param data IGTO|sT"
*/ zh) &6'S\
private void insertSort(int[] data) { A'w+Lc.2
int temp; "c[> >t
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4(\1z6?D
} :Ak^M~6a5
} D#<y
pJR
} L9/'zhiZBx
%ZoJu
} n@`3O'S
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归并排序: <l1/lm<#
`:lcN0n
package org.rut.util.algorithm.support; 7Q/H+)
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import org.rut.util.algorithm.SortUtil; k$v7@|Aw
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/** 2- L-=0
* @author treeroot #:" ]-u^
* @since 2006-2-2 q-t%spkl
* @version 1.0 eSoX|2g
*/ _j+,'\B
public class MergeSort implements SortUtil.Sort{ *{?2M6Z
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/* (non-Javadoc) HVvm3qu4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <uIPv
Zsx
*/ v
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public void sort(int[] data) { Fe[6Y<x+:
int[] temp=new int[data.length]; sA6Hk B.
mergeSort(data,temp,0,data.length-1); ?e-rwaW
} SsX$l<t*
_,^f,WO~
private void mergeSort(int[] data,int[] temp,int l,int r){ F-@yH
int mid=(l+r)/2; xLIyh7$t
if(l==r) return ; u|23M,
mergeSort(data,temp,l,mid); 8!v|`Ky
mergeSort(data,temp,mid+1,r); `x=kb;
for(int i=l;i<=r;i++){ DQhHU1
temp=data; ,;6%s>Cvd(
} fp||<B
int i1=l; 3wN4kltt
int i2=mid+1; CH+%q+I
for(int cur=l;cur<=r;cur++){ hak#Iz0[C
if(i1==mid+1) g{DOQA
data[cur]=temp[i2++];
=pe O%
else if(i2>r) 6iQqOAG
data[cur]=temp[i1++]; Yaq0mef0
else if(temp[i1] data[cur]=temp[i1++]; _x5-!gK
else 2^s@n3t
data[cur]=temp[i2++]; qb nlD\
} 2;]tIt d1
} vasw@Uto)
toF6 Z
} 'NWvQR<X
BfCib]V9C
改进后的归并排序: =SJ[)|
|QzJHP @
package org.rut.util.algorithm.support; ,=!s;+lu{
ZHen:
import org.rut.util.algorithm.SortUtil; zX=%BL?
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/** .aZB?MW
* @author treeroot y~_x
* @since 2006-2-2 Iy5W/QK6
* @version 1.0 ~i^,Z&X:
*/ J'cE@(US
public class ImprovedMergeSort implements SortUtil.Sort { a
w~a/T:
M-Nn \h$,
private static final int THRESHOLD = 10; >VjtKSN
f].z.
/* PmId #2f
* (non-Javadoc) a[^dK-
* F`Vp
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0wBr_b!
*/ ;Xidv9c
public void sort(int[] data) { d{!zJ+n
int[] temp=new int[data.length]; J!rZskd
mergeSort(data,temp,0,data.length-1); -'W:P'BG
} P)TeF1~T
~R|fdD/%
private void mergeSort(int[] data, int[] temp, int l, int r) { AF{o=@
int i, j, k; ,^xsdqpe
int mid = (l + r) / 2; P\c0Q;){h"
if (l == r) (I`<;
return; hy"p8j7_
if ((mid - l) >= THRESHOLD) x2i`$iNhmP
mergeSort(data, temp, l, mid); Fo"'[`
else 0A~f
^
insertSort(data, l, mid - l + 1); YS"76FJ
if ((r - mid) > THRESHOLD) /?j^Qu
mergeSort(data, temp, mid + 1, r); 8HO)",+I
else zJ0'KHF}o
insertSort(data, mid + 1, r - mid); 8/34{2048
nDC5/xB
for (i = l; i <= mid; i++) { qmnCa&C9
temp = data; S4O:?^28
} >|T?87
for (j = 1; j <= r - mid; j++) { =7P; /EV
temp[r - j + 1] = data[j + mid]; /=OSGIJzm
} b!37:V\#}
int a = temp[l]; X>jwjRK
$
int b = temp[r]; q33!X!br
for (i = l, j = r, k = l; k <= r; k++) { 6a`_i
if (a < b) { kLY9#p=X
data[k] = temp[i++]; \t&6$"n(B6
a = temp; I|[aa$G
} else { ?yz}
data[k] = temp[j--]; NOmSLIgt7
b = temp[j]; j1toV$)P
} 1/qiE{NW
} [laX~(ND{
} .yj=*N.
48%a${Nvvj
/** Ah2XwFg?
* @param data @p2dXJeR<
* @param l =09j1:''<d
* @param i e;}5~dSi
*/ .Lu=16
private void insertSort(int[] data, int start, int len) { [76m gj!K
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); f{Y|FjPp=E
} cl7+DAE
} zck |jhJ6
} f<'&_*7,|t
} N<Q}4%^c
4_I,wG@
堆排序: VF==F_l
LRd,7P
package org.rut.util.algorithm.support; dl$l5z\
kAk,:a;P
import org.rut.util.algorithm.SortUtil; GrQAho
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/** t_VHw'~"
* @author treeroot 2Nl("e^kJr
* @since 2006-2-2 yb**|[By
* @version 1.0
3x9C]
*/ TuCOoz@d
public class HeapSort implements SortUtil.Sort{ R;V(D3
5BCaE)J
/* (non-Javadoc) 'Jl.fN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s3kEux^
*/ gZ!(&u
public void sort(int[] data) { LA@}{hU
MaxHeap h=new MaxHeap(); x}>tX
h.init(data); 8"*$e
I5
for(int i=0;i h.remove(); K
:q-[\G
System.arraycopy(h.queue,1,data,0,data.length); S@"=,Xj M
} K;xW/7?
sBu"$"]
private static class MaxHeap{ hA\8&pI;
yRi/YR#
void init(int[] data){ # nYGKZ
this.queue=new int[data.length+1]; YV940A-n
for(int i=0;i queue[++size]=data; K+$c,1wb
fixUp(size); {4m"S7O
} a&ByV!%%+_
} 2nieI*[
fY"28#
private int size=0; EhUy7b,1_
RK3/!C`
private int[] queue; X5/{Mx`8Oz
coFg69\^
public int get() { O`0$pn
return queue[1]; x[^A9
} r;T/
QF;<%QF:
public void remove() { /[IQ:':^
SortUtil.swap(queue,1,size--); l{a&Zy)
fixDown(1); \mu9ikZ<
} ,]{NZ9
file://fixdown EXFxiw
private void fixDown(int k) { rYS D-Kq
int j; *f#4S_ws`
while ((j = k << 1) <= size) { "AK3t'
jF*
if (j < size %26amp;%26amp; queue[j] j++; jrl6):x
if (queue[k]>queue[j]) file://不用交换 |O9=C`G_
break; O({_x@
SortUtil.swap(queue,j,k); jgo@~,5R
k = j; #rr-4$w+
} `pMI[pLZe
} 2*L/c-
private void fixUp(int k) { fBOPd=
while (k > 1) { ge oN4
int j = k >> 1; 6qJB"_.
if (queue[j]>queue[k]) 66 Xt=US
break; |\(/dXXP
SortUtil.swap(queue,j,k); %UJ4wm
k = j; )x7hhEk=^
} *vO'Z &
} oX4uRc7wR
GKtQ>39B
} 5#o,]tP
(*x"6)`
} k0IU~y%
`~]ReJ!X%
SortUtil: fx-*')
oCYD@S>h
package org.rut.util.algorithm; /nP=E
6;pREM+
import org.rut.util.algorithm.support.BubbleSort; v+sbRuo8
import org.rut.util.algorithm.support.HeapSort; iP%=Wo.
import org.rut.util.algorithm.support.ImprovedMergeSort; )\;r
V';
import org.rut.util.algorithm.support.ImprovedQuickSort; [E~TYk;
import org.rut.util.algorithm.support.InsertSort; E}=,"i
import org.rut.util.algorithm.support.MergeSort; 8 vw]u_e
import org.rut.util.algorithm.support.QuickSort; Xt84 Evo
import org.rut.util.algorithm.support.SelectionSort; 4"{wga~%/
import org.rut.util.algorithm.support.ShellSort; .Cus t
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/** X8x>oV;8
* @author treeroot 7$=@q|$
* @since 2006-2-2 +3>4 ?,^g
* @version 1.0 xH[yIfHkG@
*/ fdG.=7`
public class SortUtil { 6I#DlAU@v
public final static int INSERT = 1; $IT9@}*{
public final static int BUBBLE = 2; `C?OAR44
public final static int SELECTION = 3; z0[ZO1Fo(
public final static int SHELL = 4; >2
qP
public final static int QUICK = 5; RWo B7{G
public final static int IMPROVED_QUICK = 6; B-|Zo_7
public final static int MERGE = 7; \Agg6tYr
public final static int IMPROVED_MERGE = 8; \W^+vuD8
public final static int HEAP = 9; N=wy)+
y}HC\A77uD
public static void sort(int[] data) { KgWT&^t
sort(data, IMPROVED_QUICK); p ri{vveN@
} =3C)sz}
private static String[] name={ Zwns|23n
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" r![JPhei
}; K>6k@okO
s*~o%emw
private static Sort[] impl=new Sort[]{ DZ.trtK
new InsertSort(),
0QqzS
new BubbleSort(), HjS^
nYl
new SelectionSort(), kG$8E
new ShellSort(), ONiI:Z>%
new QuickSort(), z44~5J]
new ImprovedQuickSort(), SYPMoE!U:
new MergeSort(), 3&fFIab9
new ImprovedMergeSort(), /*^|5>-`i1
new HeapSort() Z;\"pP:
}; 6ya87H'e@
<@2# VG
public static String toString(int algorithm){ "@w%TcA
return name[algorithm-1]; E}9ldM=]s
} ](:FW '-
c| ( ?
public static void sort(int[] data, int algorithm) { ~9{;VKgK
impl[algorithm-1].sort(data); >1G*ya)
} p30&JJ!~"
/t)c fFM
public static interface Sort { ~"2@A
F
public void sort(int[] data); ~!9Px j*
}
r;X0B
.{a2z*o
public static void swap(int[] data, int i, int j) { {WeXURp&nF
int temp = data; UH-uU~
data = data[j]; {FY[|:Cp
data[j] = temp; t`ceVS
} "ak9LZQ9z
} 5qkuKF