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。 Y2[A2Uy$ef
插入排序: J-<^P5
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package org.rut.util.algorithm.support; )|I5j];L
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import org.rut.util.algorithm.SortUtil; "sKa`WN}
/** bLnrbid
* @author treeroot PccB]
* @since 2006-2-2 [*Z`Kc
* @version 1.0 N|Sf=q?Ko
*/ NcAp_q?
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public class InsertSort implements SortUtil.Sort{ k3t78Qg
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/* (non-Javadoc) eJo3 MK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SgEBh
*/ : ~ A%#
public void sort(int[] data) { !P$'#5mr
int temp; \bx~*FaX
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); D r9 ?2
} }BmS)Jq
} 6ITLGA
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冒泡排序: yt+}K)Hz
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package org.rut.util.algorithm.support; 0gn@h/F2%
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import org.rut.util.algorithm.SortUtil; A`u$A9[
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/** f):~8_0b
* @author treeroot PjIeZ&p
* @since 2006-2-2 =D^TK-H
* @version 1.0 s6}Xt=j
*/ SjEdyN#
public class BubbleSort implements SortUtil.Sort{ oR*=|B
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/* (non-Javadoc) vLO&Lpv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /"ymZI!k\
*/ F#{gfh
public void sort(int[] data) { (Bo bB]~a
int temp; ;p ]y)3
for(int i=0;i for(int j=data.length-1;j>i;j--){ =_[Z W
if(data[j] SortUtil.swap(data,j,j-1); ntP|\E
}
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} SjdZyJa
} F.)!3YE
} d3]hyTqbtm
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} -K[782Q
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选择排序: 5=KF!?
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package org.rut.util.algorithm.support; htPqT,L
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import org.rut.util.algorithm.SortUtil; L"<B;u5pM
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/** 5v^L9!`@%v
* @author treeroot (XH2Sy
* @since 2006-2-2 IB|]fzy
* @version 1.0 A7P`lJgv
*/ {5%/ T,
public class SelectionSort implements SortUtil.Sort { +^6}
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/* \nqo%5XL
* (non-Javadoc) &gc`<kLu
* hFvi5I-b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @rb l^
*/ Z v0C@r
public void sort(int[] data) { h<+|x7u
int temp; cywg[
for (int i = 0; i < data.length; i++) { a)2yE,":
int lowIndex = i; e(1k0W4B
for (int j = data.length - 1; j > i; j--) { &!35/:~uD
if (data[j] < data[lowIndex]) { Ih1|LR/c
lowIndex = j; #\bP7a+
} XtBMp=7Oa
} y7<&vIEC
SortUtil.swap(data,i,lowIndex); Napf"Av
} 2@vj!U 8
} W>spz~w%j
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} 6(sIYZ2yq
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Shell排序: THhy ~wC".
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package org.rut.util.algorithm.support; g$j6n{Yl
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import org.rut.util.algorithm.SortUtil; /f1'm@8;
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/** R#4^s
* @author treeroot FoPginZ]J
* @since 2006-2-2 J?P]EQU
* @version 1.0 |t\|:E>" }
*/ uC~g#[I QM
public class ShellSort implements SortUtil.Sort{ .9LL+d
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/* (non-Javadoc) ew#T8F[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GoE#Mxh xo
*/ Su8'$CFz$.
public void sort(int[] data) { f|xLKcOP
for(int i=data.length/2;i>2;i/=2){ C]`eH*z~8
for(int j=0;j insertSort(data,j,i); /hdf{4
} 4FA|[An
} [V@yRWI
insertSort(data,0,1);
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} OoP@-D"e
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/** M@?"t_e1
* @param data Q:S\0cI0
* @param j )-&nxOP
* @param i >,h1N$A+
*/
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private void insertSort(int[] data, int start, int inc) { RT"O;P
int temp; ]Sta]}VQ
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); jXEGSn
} J0Four#MD
} -
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} 0&`}EXe<f
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} xbC~C~#
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快速排序: i
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package org.rut.util.algorithm.support; 0]a1 5
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import org.rut.util.algorithm.SortUtil; a!.!2a&t
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/** -fM1$/]
* @author treeroot aBCOGtf
* @since 2006-2-2 i$#,XFFp~
* @version 1.0 DS
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*/
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public class QuickSort implements SortUtil.Sort{ k
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/* (non-Javadoc) b@-)Fy4d2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9}whWh
*/ t/Z!O
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public void sort(int[] data) { {gIEZ{
quickSort(data,0,data.length-1); A}eOR=E
} ~}%&p&
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private void quickSort(int[] data,int i,int j){ {Vl"m2
int pivotIndex=(i+j)/2; 9<qx!-s2rr
file://swap 2e\Kw+(>{
SortUtil.swap(data,pivotIndex,j); o?=fhc
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int k=partition(data,i-1,j,data[j]); MZiF];OY
SortUtil.swap(data,k,j); J<-Fua^
if((k-i)>1) quickSort(data,i,k-1); P59uALi
if((j-k)>1) quickSort(data,k+1,j); T;%+ ]:w<
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} a5I%RY
/** lzI/\%
* @param data "
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* @param i 4=
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* @param j jM;d>Gymx
* @return -sD:+Te
*/ !z.^(Tj
private int partition(int[] data, int l, int r,int pivot) { xF^r`
do{ wISzT^RS
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); }(rzH}X@
SortUtil.swap(data,l,r); j~Ff/O
} tpd|y|
while(l SortUtil.swap(data,l,r); zPA>af~Ej
return l; uyvs kz\
} ;9Hz{ej
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改进后的快速排序: ;p .j
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package org.rut.util.algorithm.support; 1(D1}fcul
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import org.rut.util.algorithm.SortUtil; ;?#i]Bh>S
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/** {bxhH)a'
* @author treeroot DvU~%%(0^
* @since 2006-2-2 W|)(|W
* @version 1.0 s>V*=#L
*/ "%Lmgy:~
public class ImprovedQuickSort implements SortUtil.Sort { ^r%i3
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private static int MAX_STACK_SIZE=4096; )/i4YLO
private static int THRESHOLD=10; X ^9t
/* (non-Javadoc) 8F.(]@NY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I *1#
*/ wN$uX#W|
public void sort(int[] data) { KS8\F0q
int[] stack=new int[MAX_STACK_SIZE]; _GRv
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int top=-1; wP+'04H0
int pivot; 8HB?=a2Q<'
int pivotIndex,l,r; >E{#HPpBi
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stack[++top]=0; mT}Aje-L
stack[++top]=data.length-1; v UJ sFR
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while(top>0){ `<bCq\+`
int j=stack[top--]; =] 6_{#Z<
int i=stack[top--]; D_]i/
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pivotIndex=(i+j)/2; A/r;;S)%2
pivot=data[pivotIndex]; I*%&)Hj~
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SortUtil.swap(data,pivotIndex,j); CA'hvXb.
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do{ 8'>.#vyMGv
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); xy2eJJq
SortUtil.swap(data,l,r); u_$6LEp-
} t%ou1&SO
while(l SortUtil.swap(data,l,r); W"#j7p`d
SortUtil.swap(data,l,j); 'Sm/t/g"|
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if((l-i)>THRESHOLD){ 9$}+-Z
stack[++top]=i; axt6u)4%7:
stack[++top]=l-1; k0Oc,P`'*
} Va&KIHw
if((j-l)>THRESHOLD){ m^(E:6T
stack[++top]=l+1; zhD`\&G.
stack[++top]=j; 6oe$)iV
} j>0SE
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} KHiYV
file://new InsertSort().sort(data); ;L MEU_
insertSort(data); .T[!!z#^
} aa'0EU:
/** =D;UMSf
* @param data l93Q"*_
*/ .XZ 71E
private void insertSort(int[] data) { *&~sr
int temp; !'c6 Hs
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); k
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} S@l
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} oC;l5v<
} ^[SbV^DOL
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} 9^=t@
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归并排序: 1yY'hb,0
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package org.rut.util.algorithm.support; fNmG`Ke
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import org.rut.util.algorithm.SortUtil; zS>:7eG
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/** #z1ch,*3;
* @author treeroot Mf,Mcvs
* @since 2006-2-2 G> 5=`
* @version 1.0 z.\[Va$@l
*/ '+GVozc6c"
public class MergeSort implements SortUtil.Sort{ <y b=!
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/* (non-Javadoc) rVIb'sa
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /s-jR]#VA
*/ 5O4&BxQ~}
public void sort(int[] data) { q#':aXcv"
int[] temp=new int[data.length]; LU 5
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mergeSort(data,temp,0,data.length-1); hBs>2u|z9
} K.sj"#D
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private void mergeSort(int[] data,int[] temp,int l,int r){ E|6Z]6[
int mid=(l+r)/2; kcZ;SYosj
if(l==r) return ; -qnXa
mergeSort(data,temp,l,mid); 71.:p,Z@z
mergeSort(data,temp,mid+1,r); <o"D/<XnB3
for(int i=l;i<=r;i++){ kAKqW7,q"
temp=data; eUUD|U*b
} `U?H^,FVA
int i1=l; PSrt/y!
int i2=mid+1; %V" +}Dr
for(int cur=l;cur<=r;cur++){ h-)A?%Xt
if(i1==mid+1) J 6d n~nPK
data[cur]=temp[i2++]; @a7(*<".
else if(i2>r) K:Xrfn{s
data[cur]=temp[i1++]; x4 A TK
else if(temp[i1] data[cur]=temp[i1++]; yz&q2
else IQ27FV|3
data[cur]=temp[i2++]; QP-<$P;~
} [laL6
} WRU@i;l
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} t&?v9n"X
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改进后的归并排序: =-B3vd:LF
Ot:\h
package org.rut.util.algorithm.support; )v$Cv|"
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import org.rut.util.algorithm.SortUtil; 5/eS1NJ@
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/** }'M1(W
* @author treeroot Vp0GmZ
* @since 2006-2-2 S.)8&
* @version 1.0 -QNMB4
*/ :e9jK[)h0
public class ImprovedMergeSort implements SortUtil.Sort { 8T1DcA*
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private static final int THRESHOLD = 10; U"R.!=v
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/* k:uuJ|
* (non-Javadoc) ?jM7C}
* jU9zCMyNF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q; /!oA_
*/ V{^fH6;[
public void sort(int[] data) { W3-Rs&se
int[] temp=new int[data.length]; Pc-8L]2oaF
mergeSort(data,temp,0,data.length-1); 7!840 :a?+
} `"-!UkD+
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private void mergeSort(int[] data, int[] temp, int l, int r) { $T%<'=u|E
int i, j, k; zSM7x
int mid = (l + r) / 2; m$UT4,Ol
if (l == r) Q Fqv,B\<
return; })u}PQ
if ((mid - l) >= THRESHOLD) es(LE/`e
mergeSort(data, temp, l, mid); n^(yW
else gm8Tm$fY
insertSort(data, l, mid - l + 1); $.]t1e7s
if ((r - mid) > THRESHOLD) _e@qv;*
mergeSort(data, temp, mid + 1, r); F'_8pD7
else <rI$"=7
insertSort(data, mid + 1, r - mid); %T*+t"\)
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for (i = l; i <= mid; i++) { HG6{`i
temp = data; *UxB`iA
} bOGDz|H``
for (j = 1; j <= r - mid; j++) { Ch!Q? 4
temp[r - j + 1] = data[j + mid]; 9@EnmtR
} <T% hfW
int a = temp[l]; <`p'6n79
int b = temp[r]; =gv/9ce)3
for (i = l, j = r, k = l; k <= r; k++) { Tb6x@MorP
if (a < b) { "._WdY[
data[k] = temp[i++]; *b l{F\
a = temp; I; }%k;v6
} else { "RX5] eJc\
data[k] = temp[j--]; iOXP\:mPo
b = temp[j]; $ u.T1v
} qJzK8eW
} v})Ti190
} a7d-
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/** nMvIL2:3
* @param data B148wh#r
* @param l BW\5RIWwE5
* @param i .W.U:C1
*/ 67:<X(u+!
private void insertSort(int[] data, int start, int len) { 4<>:]
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); '>3RZ&O
} zLK
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} ~\IDg/9Cj
} aC]l({-0
} ")gCA:1-
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堆排序: Q+M3Pqy
w%-!dbmb%
package org.rut.util.algorithm.support; fw};.M
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import org.rut.util.algorithm.SortUtil; Ph_m'fbf
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/** )Bvu[rUy
* @author treeroot >A "aOV>K
* @since 2006-2-2 &-Y:4.BX Z
* @version 1.0 07Cuoqt2
*/ z ate%y
public class HeapSort implements SortUtil.Sort{ J+|V[E<x
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/* (non-Javadoc) ;mxT>|z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `IQC\DSl/
*/ :Lzj'Ij
public void sort(int[] data) { &