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。 CaB@,L
插入排序: wX+KW0|>
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package org.rut.util.algorithm.support; >(He,o@M
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import org.rut.util.algorithm.SortUtil; @:w[(K[^b/
/** Qv
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* @author treeroot Lq#$q>!K
* @since 2006-2-2 )(V!& w6
* @version 1.0 d$5\{YLy
*/ jI!WE$dt
public class InsertSort implements SortUtil.Sort{ GUcGu5tw:
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/* (non-Javadoc) -izZ D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VMl)_M:'
*/ 6~ +/cY-V
public void sort(int[] data) { mO^)k
int temp; )-\[A<(
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); IA~wmOF
} tB#-}Gf
} I*4g ;1x
} fI }v}L^
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} |Ye%HpTTv
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冒泡排序: x.%x|6G*
+Z/aB*aVa^
package org.rut.util.algorithm.support; iM_Zn!|@\
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import org.rut.util.algorithm.SortUtil; mvXIh";
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/** Yq0j w&v
* @author treeroot Evt&N)l!^
* @since 2006-2-2 dkAY%z two
* @version 1.0 _i pY;
*/ r0:I
public class BubbleSort implements SortUtil.Sort{ u(C?\HaH
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/* (non-Javadoc) L4!T
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \9%RY]TK3
*/ ICm/9Onh&
public void sort(int[] data) { 4h$W4NJK
int temp; VWT\wAL
for(int i=0;i for(int j=data.length-1;j>i;j--){ ((
{4)5}
if(data[j] SortUtil.swap(data,j,j-1); XAb-K?)
} \[Q* d
} |m>{< :
} 0u=FlQ
}h
} ~9JLqN"
8omk4 ;
} v~KgCLo
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选择排序: dFzlcKFFD
w6G<&1iH
package org.rut.util.algorithm.support; Y N*"q'Yz_
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import org.rut.util.algorithm.SortUtil; vJfj1 f
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/** 2`nOYK
* @author treeroot *Ry{}|_8
* @since 2006-2-2 MB!$s_~o#L
* @version 1.0 7yFV.#K3O
*/ <69Uq8GI
public class SelectionSort implements SortUtil.Sort { H-'~c\)
v6*8CQ+
/* #9u2LK
* (non-Javadoc) CSNfLGA
* ? yek\X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [fl^1!3{
*/ 'bx$}w N
public void sort(int[] data) { pHv~^L%=
int temp;
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for (int i = 0; i < data.length; i++) { xq\A TON
int lowIndex = i; +lED6]+%
for (int j = data.length - 1; j > i; j--) { ';Ew-u
if (data[j] < data[lowIndex]) { \8iWcqJktN
lowIndex = j; $|n#L6k
} 9vw0box
} EjFK zx
SortUtil.swap(data,i,lowIndex); (^;Fyf/
} %2z]2@
} -Gn0TA2/C
Y=tx
kN
} ?h7(,39^>
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Shell排序: ]q<Zc>OC
?JI:>3e
package org.rut.util.algorithm.support; 6y}|IhX?z
2}8xY:|@(U
import org.rut.util.algorithm.SortUtil; Y=YIz>u
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/** k-XE|v
* @author treeroot a^QyYX}\qR
* @since 2006-2-2 7qT>wCVT
* @version 1.0 /4lm=ZE/
*/ 5V"g,]'Nd
public class ShellSort implements SortUtil.Sort{ ,+hH|$
r'~^BLT`#
/* (non-Javadoc) x9s1AzM{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OD`?BM
*/ )%D>U
public void sort(int[] data) { 76j5
for(int i=data.length/2;i>2;i/=2){ M->$'Zgh`
for(int j=0;j insertSort(data,j,i); o:8*WCiqrN
} N]iu
o.
} "JJEF2e@Z
insertSort(data,0,1); fBRU4q=^T
} [mJmT->
'I8K1Q=/
/** U-0A}@N
* @param data y1@*)|
r
* @param j ]F81N(@:F
* @param i ]> 36{k]&
*/ /n&Y6@W
private void insertSort(int[] data, int start, int inc) { ]31UA>/TI
int temp; TE!+G\@
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); `7mRUDz
} TEY n^/n~
} UoSzxL
} M)v4>Rw+
@#CZ7~Hn
} Yl#|+xYA5[
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快速排序: -=)Al^V4T
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package org.rut.util.algorithm.support; eG05}
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import org.rut.util.algorithm.SortUtil; 7Fd`MTo
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/** i`hr'}x
* @author treeroot pi|P&?yw
* @since 2006-2-2 eK)R=M@i
* @version 1.0 bxrT[]
*/ ^}PG*h|
public class QuickSort implements SortUtil.Sort{ Ub_!~tb}?
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/* (non-Javadoc) bh&Wy<Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _b)=ERBbCo
*/ N">4I)
public void sort(int[] data) { eGF+@)K1"
quickSort(data,0,data.length-1); T1YCld
} m2|%AD
private void quickSort(int[] data,int i,int j){ 6 J
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int pivotIndex=(i+j)/2; pSC\[%K
file://swap #FNSE*Y
SortUtil.swap(data,pivotIndex,j); o,D7$WzL
<jwQ&fm)/R
int k=partition(data,i-1,j,data[j]); "7X[@xX@
SortUtil.swap(data,k,j); {k"t`uo_
if((k-i)>1) quickSort(data,i,k-1); ah9P
C7[
if((j-k)>1) quickSort(data,k+1,j); uihU)]+@t/
7kDqgod^A
} f2f2&|7
/** (.Th?p%>7
* @param data vi1
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* @param i )oU%++cdo
* @param j Wq}Y|0c
* @return
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*/ 9z9\pXFQ
private int partition(int[] data, int l, int r,int pivot) { &Fg|52
do{ bMp[:dw`y
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); i]
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SortUtil.swap(data,l,r); P1u(0t
} :FN-.1C
while(l SortUtil.swap(data,l,r); ;.'\8!j
return l; `:>N.9'o
} yRyUOTK
]I<w;.z
} u"s@eN
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改进后的快速排序: gmW-#.
3[Xc:;+/
package org.rut.util.algorithm.support; 7]`l"=/z
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import org.rut.util.algorithm.SortUtil; uG){0%nX
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/** ~cL)0/j}
* @author treeroot 49iqrP'
* @since 2006-2-2 E3"j7y[S
* @version 1.0 ][TA7pDPV
*/ +
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public class ImprovedQuickSort implements SortUtil.Sort { vXLGdv::
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private static int MAX_STACK_SIZE=4096; kuI$VC
private static int THRESHOLD=10; JUpb*B_z
/* (non-Javadoc) pt_]&3\e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3o^~6A
*/ ~LF1$Cai
public void sort(int[] data) { rf=oH
}
int[] stack=new int[MAX_STACK_SIZE]; N eC]MW
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int top=-1; )zv"<>Q 6
int pivot; \TS.9 >\
int pivotIndex,l,r; k((kx:
0 H0U%x8
stack[++top]=0; i*jnC>
stack[++top]=data.length-1; Min{&?a
I1 +A$<Fa
while(top>0){ 9'Cu9nR
int j=stack[top--]; &\iMIJ-
int i=stack[top--]; C1w6[f1+
,~G:>q$ad
pivotIndex=(i+j)/2; Q>g-xe 1
pivot=data[pivotIndex]; <0btwsv}
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SortUtil.swap(data,pivotIndex,j); .$U=ngj\t
Sah!|9
file://partition m}32ovpw
l=i-1; G{u(pC^
r=j; !IC@^kkh{
do{ $[U:Dk}
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Uo0[ZsFD
SortUtil.swap(data,l,r); =:=s
} sUk&NM%>
while(l SortUtil.swap(data,l,r); =J0r,dR
SortUtil.swap(data,l,j); 2=
)V"lR\
J 7HOSFwXn
if((l-i)>THRESHOLD){ RHu4cK!5
stack[++top]=i; RH^;M-'
stack[++top]=l-1; WiqkC#N
} -?L3"rxAP
if((j-l)>THRESHOLD){ #:E^($v
stack[++top]=l+1; x }.&?m
stack[++top]=j; Ch'e'EmI
} Zfc{}ius
T?KM}<$(O
} },%,v2}
file://new InsertSort().sort(data); V( =3K"j
insertSort(data); R,+"^:}
} 'NN3XyD
/** xzb{g,c
* @param data T!1Np'12zF
*/
W2]%QN=m$
private void insertSort(int[] data) { r"W<1Hu
int temp; )&[Zw{6P
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wpf
} `,s0^?_
} Mi<}q@]e
} V;(Rg=5
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} H><!
C
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归并排序: 5 J
7XVe>
BYZllwxwTE
package org.rut.util.algorithm.support; @N6KZn|R
nnuJY$O;M
import org.rut.util.algorithm.SortUtil; |k<5yj4?
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/** kPYQcOK8
* @author treeroot RY9Ur
* @since 2006-2-2 <ahcE1h
* @version 1.0 ZW ZKy JQ
*/ ^)1!TewCY
public class MergeSort implements SortUtil.Sort{ h{CMPJjD
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/* (non-Javadoc) bJB*w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {W%/?d9m
*/ y<^hM6S?Z
public void sort(int[] data) { i)[~]D.EH8
int[] temp=new int[data.length]; S~\u]j^%y
mergeSort(data,temp,0,data.length-1); QuBaG<
} zvKypx
z<u@::
private void mergeSort(int[] data,int[] temp,int l,int r){ v;:. k,E0
int mid=(l+r)/2; tRXR/;3O
if(l==r) return ; 2l}3L
mergeSort(data,temp,l,mid); p;rT#R&6>
mergeSort(data,temp,mid+1,r); WZf}1.Mh*
for(int i=l;i<=r;i++){ yG:Pg MrB
temp=data; 4p]hY!7
} Jm3iYR+,
int i1=l; y2@8?
int i2=mid+1; Ombvp;
for(int cur=l;cur<=r;cur++){ h"(HDn q
if(i1==mid+1) }O8#4-E_Ji
data[cur]=temp[i2++]; Os)}kkja
else if(i2>r) D1~3 3;
data[cur]=temp[i1++]; a*?,wmzl
else if(temp[i1] data[cur]=temp[i1++]; =aRE
else t**o<p#)f
data[cur]=temp[i2++]; 3k* U/*
} FQw@@
} !;.nL-NQ
xmwH~UWp
} IfpFsq:
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改进后的归并排序: ?OdJt
"kkZK=}Nv
package org.rut.util.algorithm.support; qW t 9Tr
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import org.rut.util.algorithm.SortUtil; Jc, {n*
so }Kb3 n
/** QW6\~l 4
* @author treeroot 6Ej@;]^^-
* @since 2006-2-2 xyRZ
v]K1
* @version 1.0 Z{
b($po
*/ ?iaD;:'qE
public class ImprovedMergeSort implements SortUtil.Sort { S1W(]%0/
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private static final int THRESHOLD = 10; v`9n'+h-c6
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/* r?wE ;gH
* (non-Javadoc) -,}ppTG
* 'E~[I"0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5Y(f7,JX
*/ NTL`9b
public void sort(int[] data) { (ZHEPN
int[] temp=new int[data.length]; ?o.Q
mergeSort(data,temp,0,data.length-1); qy:
} ~U_,z)<`)c
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private void mergeSort(int[] data, int[] temp, int l, int r) { 3qBZzM
O*
int i, j, k; @M ]7',2"
int mid = (l + r) / 2; yf7$m_$C'
if (l == r) O;~dao
return; Pdw[#X<[`
if ((mid - l) >= THRESHOLD) 9Sk?tl
mergeSort(data, temp, l, mid); -<.b3M h
else Mwd(?o
insertSort(data, l, mid - l + 1); o;2QZ"v
if ((r - mid) > THRESHOLD) "+:~#&r
mergeSort(data, temp, mid + 1, r); 5b-: e? |
else K(B|o6[
insertSort(data, mid + 1, r - mid); gv,8Wo
[G[|auKF
for (i = l; i <= mid; i++) { XhxCOpO
temp = data; RE}$(T=
} ({#M*=&"
for (j = 1; j <= r - mid; j++) { H}B%OFI \+
temp[r - j + 1] = data[j + mid]; [_?dp aTt
} q/HwcX+[b
int a = temp[l]; mo-
Y %
int b = temp[r]; iLD:}yK
for (i = l, j = r, k = l; k <= r; k++) { &ZUV=q%g9n
if (a < b) { &
!I$
data[k] = temp[i++]; 298@&_
a = temp; uGMmS9v$ J
} else { BV01&.<|
data[k] = temp[j--]; QL_9a,R'r
b = temp[j]; ',P E25Z
} &?gvW//L2
} 7;;HP`vY
} {@w!kl~8
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/** _}(ej&'f
* @param data E/_I$<,_y
* @param l I?!7]S n$
* @param i k(.6K[b
*/ dCkk5&2n
private void insertSort(int[] data, int start, int len) { PhOtSml0
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); y,QJy=?
} :gJ?3LwTf
} I@<\DltPi
} Z&E!m
} .#[==
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堆排序: }L.&@P<
Vy7o}z`
package org.rut.util.algorithm.support; `gFE/i18
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import org.rut.util.algorithm.SortUtil; I?_YL*
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/** nVt,= ?_ U
* @author treeroot U4*Q;A#
* @since 2006-2-2 ^*=.Vuqy
* @version 1.0 T,D(Xh
*/ A\v(!yg
public class HeapSort implements SortUtil.Sort{ ^<VJ8jk<
jA}b=c
/* (non-Javadoc) o6[aP[~F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |kXx9vGq@
*/ c/Ykk7T9--
public void sort(int[] data) { 2)zAX"#/
MaxHeap h=new MaxHeap(); C>:'@o
Z
h.init(data); b,Vg3BS
for(int i=0;i h.remove(); }[gk9uM_7
System.arraycopy(h.queue,1,data,0,data.length); ecRY,MN
} #{BHH;J+
QwSYjR:K
private static class MaxHeap{ jJK`+J,i}X
Q'B2!9=LB
void init(int[] data){ %P2l@}?a
this.queue=new int[data.length+1]; =
olmBXn/
for(int i=0;i queue[++size]=data; yxx'g+D*
fixUp(size); GF=rGn@,)`
} B3V;
} HDY2<Hzc
EDf"1b{PX
private int size=0; 9_
'M'k$G@Z
private int[] queue; Gjh8>(
<X b B;
public int get() { mhDC1lXF
return queue[1]; i=^!?
i
} J )DFH~p
74p=uQ
public void remove() { 5SNa~
kC&
SortUtil.swap(queue,1,size--); "A]Xe[oS
fixDown(1); %qYiE!%&
} t3//
U#
file://fixdown tvlrUp
private void fixDown(int k) { (rfR:[JkC2
int j; p?v. 42R:z
while ((j = k << 1) <= size) { _P{f+HxU
if (j < size %26amp;%26amp; queue[j] j++; [ <,i}z
if (queue[k]>queue[j]) file://不用交换 CVy\']
break; nde_%d$
SortUtil.swap(queue,j,k); W Y]
k = j; +\_c*'K>
} 6B=: P3Y
} !5}u \
private void fixUp(int k) { P\lEfsuR
while (k > 1) { N a$eeM
int j = k >> 1; !JGe
.U5
if (queue[j]>queue[k]) b?kY`LC
break; 00-cT9C3
SortUtil.swap(queue,j,k); psFY=^69o
k = j; }83a^E9L
} "-T[D9(A
} G=ly .
=G,wR'M
} !K[UJQs\
qbsmB8rh
} y<5RV>"Vg
$~+(si2
SortUtil: a-bj! Rs
Pb`Uxv
package org.rut.util.algorithm; NZoNsNu*C.
6D&{+;
import org.rut.util.algorithm.support.BubbleSort; /f}!G
import org.rut.util.algorithm.support.HeapSort; je`Ysbe n
import org.rut.util.algorithm.support.ImprovedMergeSort; JJZu%9~[
import org.rut.util.algorithm.support.ImprovedQuickSort; >2t.7UhDI
import org.rut.util.algorithm.support.InsertSort; d2a*xDkv
import org.rut.util.algorithm.support.MergeSort; YLsOA`5X
import org.rut.util.algorithm.support.QuickSort; 2if7|o$=
import org.rut.util.algorithm.support.SelectionSort; MfA@)v
import org.rut.util.algorithm.support.ShellSort; /Bw
<?:
q)j_QbW)
/** TKe\Bi
* @author treeroot D>fg
* @since 2006-2-2 [p+-]V
* @version 1.0 C==yl"w
*/ v8} vk]b
public class SortUtil { .sCj3sX*
public final static int INSERT = 1; VtN1 [}
public final static int BUBBLE = 2; \'Q rJ ?D
public final static int SELECTION = 3; CBr(a'3{Z
public final static int SHELL = 4; 3%[;nhbA7
public final static int QUICK = 5; g2;lEW
public final static int IMPROVED_QUICK = 6; ;p+[R+ )
public final static int MERGE = 7; [eO^C
public final static int IMPROVED_MERGE = 8; :;hz!6!
public final static int HEAP = 9; 7,lnfCm H
AxtmG\o>
public static void sort(int[] data) { X`6"^
xme
sort(data, IMPROVED_QUICK); 7 'q *(v
} QdrZi.qKH
private static String[] name={ smUSR4VK
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" /rIyW?& f
}; lQM&q
w7@TM%nS
private static Sort[] impl=new Sort[]{ 85T"(HhT
new InsertSort(), yT~rql
new BubbleSort(), OUk"aAo
new SelectionSort(), -3K01p
new ShellSort(), \(A A|;
new QuickSort(), (Z0_e&=*
new ImprovedQuickSort(), ^B)f!HtU
new MergeSort(), 'eo/"~/*w
new ImprovedMergeSort(), ;,}Dh/&E
new HeapSort() Z%Fc
-KVt
}; 5%%e$o+
3_ly"\I\
public static String toString(int algorithm){ _a#k3r
return name[algorithm-1]; ,v%'2[}
} @y'0_Y0-B
u4h0s1iI
public static void sort(int[] data, int algorithm) { ^)y8X.iO
impl[algorithm-1].sort(data); Yb=77(QV
} 3=Q:{
=%B5TBG
public static interface Sort { 6_s(Kx>j
public void sort(int[] data); Nq%ir8hE
} eaC%&k
#;yxn.</
public static void swap(int[] data, int i, int j) { `*l aUn
int temp = data; H$+@O-
data = data[j]; <D[0mi0
data[j] = temp; ]OtnekkK$
} {Q}F.0Q
} L>h|1ZK