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。 1v#%Ei$6`t
插入排序: x;w6na
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package org.rut.util.algorithm.support; B)$| vK=
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import org.rut.util.algorithm.SortUtil; >d@&2F TO
/** uMUBh 80,L
* @author treeroot 9X[kEl
* @since 2006-2-2 .GbX]?dN
* @version 1.0 GXcJ< v
*/ eJ,/:=QQ{
public class InsertSort implements SortUtil.Sort{ r=Gks=NX"
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/* (non-Javadoc) 0*VWzH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q$p%ZefZ
*/ ) g0%{dfJ
public void sort(int[] data) { Y$o<6[7
int temp; U] ~$g}!)
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); (DJ"WG
} FSP+?((
} C,wL0Yj[
} 0;hqIJcE:\
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} UMv.{iEj
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冒泡排序: Q_1:tW
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package org.rut.util.algorithm.support; +ndaLhj'
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import org.rut.util.algorithm.SortUtil; N1Ng^aY0
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/** LU
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* @author treeroot #r$cyV!k
* @since 2006-2-2 ks&*O!h
* @version 1.0 Ki4r<>\l{H
*/ Ac96
[
public class BubbleSort implements SortUtil.Sort{ )(A]Ln4
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/* (non-Javadoc) tI]Q%S,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RW|`nL
*/ l~1Oef#y
public void sort(int[] data) { &]g}u5J!=
int temp; -O1>|y2rU
for(int i=0;i for(int j=data.length-1;j>i;j--){ bNm#tmSt
if(data[j] SortUtil.swap(data,j,j-1); ICpAt~3[M
} jGJLSEe_
} .RE:;<|w
} 2^Eg9y'
} fA&k`L(y
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} FFl!\y*0z
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选择排序: s0\X ^
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package org.rut.util.algorithm.support; `V=N*hv`
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import org.rut.util.algorithm.SortUtil; 6q*9[<8
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/** "76]u)
* @author treeroot 2 X.r%&!1M
* @since 2006-2-2 oin$-i|Xp!
* @version 1.0 <x@}01~
*/ g~ZvA(`
public class SelectionSort implements SortUtil.Sort { 56}U8X
NYyh|X:m
/* ?*2CpM&l
* (non-Javadoc) &?W0mW(
* 6TYY
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b $'FvZbk
*/ M.Y~1c4f
public void sort(int[] data) {
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int temp; *Tas`WA
for (int i = 0; i < data.length; i++) { ={_C&57N1
int lowIndex = i; !\"EFVH
for (int j = data.length - 1; j > i; j--) { qUh2hz:
if (data[j] < data[lowIndex]) { ?@BTGUK"C
lowIndex = j; .Fs7z7?Y
} 2n3W=dF
} yaD~1"GA'O
SortUtil.swap(data,i,lowIndex); ,C
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} Ed"h16j?z
} fg
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5"^en# ?9
} lAi6sPG)0
j:<n+:HC
Shell排序: *Y,x|F
U(a#@K!H
package org.rut.util.algorithm.support; .+qQYDEw
M2d$4-<
import org.rut.util.algorithm.SortUtil; yQU_>_!n
FO=4:
/** t'?.8}?)I&
* @author treeroot PjZvQ\Z
* @since 2006-2-2 ?<V?wsp
* @version 1.0 b$4"i XSQ
*/ T3~k>"W
public class ShellSort implements SortUtil.Sort{ 11TL~xFh
~kQA7;`j$
/* (non-Javadoc) Cf TfL3(J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~KHVY)@P
*/ *$yR*}A
public void sort(int[] data) { 5pj22 s
for(int i=data.length/2;i>2;i/=2){ E'G4Y-
for(int j=0;j insertSort(data,j,i); N8k00*p65
} w0ht
} S)lkz'tdk
insertSort(data,0,1); #EO9UW5
} A$<.a'&T!
@AGn{q
/** Lilr0|U+
* @param data l%[EXZ
* @param j ?6yjy<D)$e
* @param i z,Medw6[
*/ Xp >7iX!:
private void insertSort(int[] data, int start, int inc) { u&`XB|~
int temp; >CrA;\l
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); <<@bl@9'
} 0>C T=(A
} n.T&}ZPz\v
} ,#Iu
7di
cimp/n"
} %{ABaeb]
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快速排序: jNTjSX
/~}}"zx&
package org.rut.util.algorithm.support; iEd\6EZ
1HXjN~XF
import org.rut.util.algorithm.SortUtil; DAS/43\
J]v%q,"
/** aIJt0;
* @author treeroot }x@2]juJ
* @since 2006-2-2 u6T+Cg
* @version 1.0 18~>ZR
*/ QOjqQfmM;
public class QuickSort implements SortUtil.Sort{ qLw{?sH}J/
#i@;J]x(
/* (non-Javadoc) Id'X*U7Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) " 7!;KHc
*/ 5Y.vJz
public void sort(int[] data) { V@Rrn <l
quickSort(data,0,data.length-1); E^QlJ8
} #OIcLEn%
private void quickSort(int[] data,int i,int j){ aEM %R<e
int pivotIndex=(i+j)/2; s8-<m,*
file://swap _(Sa4Vb=Q6
SortUtil.swap(data,pivotIndex,j); W{%TlN
)\_:{ c
int k=partition(data,i-1,j,data[j]); f%Ns[S~ r
SortUtil.swap(data,k,j); _jJPbKz
if((k-i)>1) quickSort(data,i,k-1); 3|WWo1
if((j-k)>1) quickSort(data,k+1,j); 74H)|Dkx
%70~M_
} L%BNz3:Dt
/** TatpXN\
* @param data >SML"+>
* @param i TcIcS]w%
* @param j =4[v3Qx
* @return \n{qsf:
*/ {. 2k6_1[
private int partition(int[] data, int l, int r,int pivot) { vI2^tX9
do{ j/>$,
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); $>GgB`
SortUtil.swap(data,l,r); p;._HJ(
} _9JhL:cY
while(l SortUtil.swap(data,l,r); q<\,
return l; 6I1,:nLL<
} )=5ng-
3{ LP?w:@
} lLp^Gt^}w(
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改进后的快速排序: ;u;# g
qR(\5}
package org.rut.util.algorithm.support; (IC]?n}
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j
import org.rut.util.algorithm.SortUtil; k *Q<3@S
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/** BnCbon)
* @author treeroot .C&ktU4
* @since 2006-2-2 ?0)&U
* @version 1.0 F">Qpgt
*/ eln&]d;
public class ImprovedQuickSort implements SortUtil.Sort { q8s0AN'@t'
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private static int MAX_STACK_SIZE=4096; IqC]! H0
private static int THRESHOLD=10; }D7I3]2>
/* (non-Javadoc) b+@JY2dvj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Gs9:6
*/ odPL{XFj
public void sort(int[] data) { %K\?E98M
int[] stack=new int[MAX_STACK_SIZE]; R(2tlZ
> ?6&c
int top=-1; !OBEM1~
1
int pivot; q0$
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int pivotIndex,l,r; ,17hGKM
>+]_5qc
stack[++top]=0; kBYNf =
stack[++top]=data.length-1; Hj:r[/
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while(top>0){ O) WCW<p
int j=stack[top--]; XLAN Np%E
int i=stack[top--]; I3,= 0z
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pivotIndex=(i+j)/2; Sg6"WV{<
pivot=data[pivotIndex]; V#cqRE3XNi
x/;bu W-
SortUtil.swap(data,pivotIndex,j); ]T;EdK-
{)
Q@c)'
file://partition R,F[XI+=N
l=i-1; q>mE<
(-M
r=j;
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do{ KcK>%%
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); qxFB%KqU
SortUtil.swap(data,l,r); eU<]o<
\Qo
} O+?<h{"
while(l SortUtil.swap(data,l,r); o3I Tr';
SortUtil.swap(data,l,j); fRtUvC-#H
pcT:]d[1)
if((l-i)>THRESHOLD){ 'h^0HE\~p
stack[++top]=i; MxGu>r
stack[++top]=l-1; }z\_;\7
} 9T|IvQK8
if((j-l)>THRESHOLD){ RA G3o-
stack[++top]=l+1; qQ"Fv|]~>
stack[++top]=j; NR -!VJQ
} y($%;l
t%'Z<DmG+
} gF[z fDm
file://new InsertSort().sort(data); $:
]o]a
insertSort(data); FI3)i>CnW
} 4$*%gL;f^
/** zgs (Dt;
* @param data g>dA$h%
*/ *M$0J'-BQ
private void insertSort(int[] data) { gF$V$cU
int temp; -C<zF`jO
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :{IO=^D=$
} <^zHE=h"
} ~$p2#AqX
} >B2:kY F
WDg+J
} $OP7l>KZY
Z\HX~*,6
归并排序: `FsH}UPu
b
z)9wXo#~
package org.rut.util.algorithm.support;
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p
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import org.rut.util.algorithm.SortUtil; +"8,Mh
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/** |b*?
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* @author treeroot ^4,a 8`
* @since 2006-2-2 Sqo
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* @version 1.0 G}FIjBE
*/ df
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public class MergeSort implements SortUtil.Sort{ Q8DQlqHm
;_^fk&+
/* (non-Javadoc) |b-]n"}c>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) co9 .wB@
*/ ,(;lIP
public void sort(int[] data) { 3:8{"md@2
int[] temp=new int[data.length]; #Sa27$&.>
mergeSort(data,temp,0,data.length-1); OtGb<v<_H
} ^NX"sM0g
.!G94b
private void mergeSort(int[] data,int[] temp,int l,int r){ xA9:*>+>
int mid=(l+r)/2; >lBD<;T
if(l==r) return ; (HSgEs1d
mergeSort(data,temp,l,mid); g_G6~-.9I
mergeSort(data,temp,mid+1,r); e_V O3"
for(int i=l;i<=r;i++){ %-<'QYYP
temp=data; #/I[Jqf
} ]|sAK%/
int i1=l; nv0]05.4
int i2=mid+1; t`+'r}=d
for(int cur=l;cur<=r;cur++){ h}]fnA
if(i1==mid+1) ~M\I;8ne
data[cur]=temp[i2++]; 7DIIx}A
else if(i2>r) jLpc
Zb,
data[cur]=temp[i1++]; de>v
else if(temp[i1] data[cur]=temp[i1++]; "R3d+p
else kI:}| _
data[cur]=temp[i2++]; qQ0cJIISb\
} \mV'mZ9>
} 4E+hRKuo,
Op>%?W8/UF
} *P#WDXRwd
Tp0bS
改进后的归并排序: 5cEcTJL[C
Y_]De3:V0B
package org.rut.util.algorithm.support; 1!.(4gV
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import org.rut.util.algorithm.SortUtil; +e-G,%>9
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/** %zSuK8kxV
* @author treeroot fwBRWr9
* @since 2006-2-2 OX"j#
* @version 1.0 ;\[(- )f!=
*/ y|Ir._bt
public class ImprovedMergeSort implements SortUtil.Sort { 1c;6xc,ub
#'q<v"w
private static final int THRESHOLD = 10; &[At`Nw71
1?| flK
/* 0
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* (non-Javadoc) 2hee./F`
* wN2QK6Oc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O)Y?=G)
*/ gt/zpiKmV
public void sort(int[] data) { ;L,mBQB?0b
int[] temp=new int[data.length]; fPrLM'
mergeSort(data,temp,0,data.length-1); [p2H=
} MNg^]tpf
~j-cS
J3
private void mergeSort(int[] data, int[] temp, int l, int r) { #Jna6
int i, j, k; HmZ{L +"
int mid = (l + r) / 2; uio@r^Xz
if (l == r) KL ?@@7
return; :Dd$i_3=
if ((mid - l) >= THRESHOLD) TARXx>
mergeSort(data, temp, l, mid); (%U@3._
else E"L2&.
insertSort(data, l, mid - l + 1); Z(9u<
if ((r - mid) > THRESHOLD) 8HZs>l
mergeSort(data, temp, mid + 1, r); lhi_6&&[8
else fPR$kch
insertSort(data, mid + 1, r - mid); ]q6;#EUr?
Uz7^1.-g4
for (i = l; i <= mid; i++) { 4<x'ocKlD
temp = data; /'hC i]b@v
} \T;\XAGr
for (j = 1; j <= r - mid; j++) { HXoX
temp[r - j + 1] = data[j + mid]; b]7GmRekl
} /RyR>G!
int a = temp[l]; ?h0X,fl3
int b = temp[r]; $-&BB(-{E&
for (i = l, j = r, k = l; k <= r; k++) { A"aV'~>
if (a < b) { Dk='+\
data[k] = temp[i++]; sO5?aB&
a = temp; J-ePE7i
} else { o=RM-tR`v
data[k] = temp[j--]; T2D<UhP
b = temp[j]; w ~ dk#=
} .)+hH y
} Z lHDi!T
} 0Hs|*:Y1D
S=xA[%5
/** XUF\r]B,9
* @param data ^0#;YOk
* @param l z`Hy'{1
* @param i k@ K7yK
*/ 3b YCOqG
private void insertSort(int[] data, int start, int len) { ~Aq5XI%i
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 720)VzT
} Pub0IIs
} 87WBM;$&s
} m{7^EF
} yi^b)2G
U;n*j3wT
堆排序: r|*&GHo L
ql GW.jY.
package org.rut.util.algorithm.support; jAh2N3)
1.D-FPK
import org.rut.util.algorithm.SortUtil; N-g8}03
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/** '&99?s`u
* @author treeroot f""`cdqAOh
* @since 2006-2-2 kSc{^-<R
* @version 1.0 ^ZM0c>ev=l
*/ 2S8P}$mM
public class HeapSort implements SortUtil.Sort{ O,<IGO
O'GG Ti]e
/* (non-Javadoc) vfB2XVc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KvQ,;A
*/ CAT.4GM
public void sort(int[] data) { !vn1v)6
MaxHeap h=new MaxHeap(); ^VT1vu
%03
h.init(data); @h?shW=^
for(int i=0;i h.remove(); "C?5f]T
System.arraycopy(h.queue,1,data,0,data.length); F/1#l@qN
} +
<c^=&7Lq
s!+"yK
private static class MaxHeap{ 4Iq'/r
z5*=MlZ)R.
void init(int[] data){ jEz+1Nl)
this.queue=new int[data.length+1]; @=5qT]%U3J
for(int i=0;i queue[++size]=data; :y2p@#l#
fixUp(size); L&-hXGx=7
} $hR)i
} =TP(
UJ
D^U:
ih
private int size=0; 7B3w\
#&8}<8V
private int[] queue; L0%hnA@
39 Y(!q
public int get() {
@>x pYV
return queue[1]; zNSu
} -;;Z 'NM;8
i{^Z1;Yl
public void remove() { ^O^:$nXhYy
SortUtil.swap(queue,1,size--); h5kPn~
fixDown(1); /$"[k2 N
} INSkgOo
file://fixdown Y`6rEA0
private void fixDown(int k) { L?Yoh<
int j; N:VX!w
while ((j = k << 1) <= size) { W
YW|P2*
if (j < size %26amp;%26amp; queue[j] j++; o$.e^XL
if (queue[k]>queue[j]) file://不用交换 x\s,= n3z
break; pWE `x|J
SortUtil.swap(queue,j,k); 6O2=Ns;J6
k = j; 7:NmCpgL!
} z5Qs@dG
} ]+DI.%
private void fixUp(int k) { 4*Z6}"
while (k > 1) { uqyB5V0gh
int j = k >> 1; "k$JP
if (queue[j]>queue[k]) d h^^G^
break; $!A:5jech
SortUtil.swap(queue,j,k); f]8I64
k = j; ]J2:194
} lo&#(L+2
} Gi^Ha=?J%
.wrL3z_
} $\a5&1rl
T:asm1BC[
} MVv1.6c7Y
{}>n{_
SortUtil: pN[0YmY#
IO.<q,pP!_
package org.rut.util.algorithm; o**y Z2
Wx)K*9
import org.rut.util.algorithm.support.BubbleSort; 4YU/uQm
import org.rut.util.algorithm.support.HeapSort; sTHq&(hLUG
import org.rut.util.algorithm.support.ImprovedMergeSort; o=fgin/E\
import org.rut.util.algorithm.support.ImprovedQuickSort; ;%q39U}
import org.rut.util.algorithm.support.InsertSort; Bz2'=~J
import org.rut.util.algorithm.support.MergeSort; %1McD{
import org.rut.util.algorithm.support.QuickSort; ts9pM~_~
import org.rut.util.algorithm.support.SelectionSort; +UWU|:
import org.rut.util.algorithm.support.ShellSort; BRG|Asg(
Ek.&Sf$cd'
/** B`#h{ )[
* @author treeroot $<)Yyi>6E
* @since 2006-2-2 ekf$dgoR
* @version 1.0 }ublR&zlp
*/ Y^ve:Z
public class SortUtil { K%KZO`gO
public final static int INSERT = 1; 10sK]XI
public final static int BUBBLE = 2; }ZZ5].-a<D
public final static int SELECTION = 3; (d2@Mz
public final static int SHELL = 4; q$ghLGz
public final static int QUICK = 5; ES:!Vx9t0|
public final static int IMPROVED_QUICK = 6; ;@4H5p
public final static int MERGE = 7; &$fbP5uAZ
public final static int IMPROVED_MERGE = 8; j,%EW+j$
public final static int HEAP = 9; T*q"N?/4
!#D=w$@r:
public static void sort(int[] data) { bNzqls$
sort(data, IMPROVED_QUICK); }3/~x
} J>S3sP
private static String[] name={ *ftC_v@p5
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 9 |:^k.
}; X.|Ygx
v1[_}N9f>H
private static Sort[] impl=new Sort[]{ 0^ !Gib
new InsertSort(), hY\{|
new BubbleSort(), p_terD:
new SelectionSort(), dXu {p
new ShellSort(), CVKnTEs
new QuickSort(), E%k7wM {
new ImprovedQuickSort(), a,Kky^B
new MergeSort(), j=sBq.S
new ImprovedMergeSort(), )GB`*M[
new HeapSort() 1IA5.@G:
}; &,W$-[
(7q^FtjA#
public static String toString(int algorithm){ ,I*X)(
return name[algorithm-1]; m^Lj+=Z"
} I
,FqN}
M?6;|-HH
public static void sort(int[] data, int algorithm) { x(r+P9f\<
impl[algorithm-1].sort(data); cz.3|Lby
} 5h_5Z~
6nw&$I
public static interface Sort { ,a(O`##Bn
public void sort(int[] data); Wpm9`K
} H*!5e0~rR
N7.
@FK
public static void swap(int[] data, int i, int j) { ;lfWuU%R
int temp = data; 0o/B{|rv
data = data[j]; [QEwK|!L
data[j] = temp; EnCU4CU`
} t3F?>G#y
} nmE5]Pcg