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。 Oi&.pY:X-
插入排序: qyv9]Q1
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package org.rut.util.algorithm.support; ),0_ C\
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import org.rut.util.algorithm.SortUtil; M4pEwD
/** vGO- a2Z
* @author treeroot C_=! ( @`8
* @since 2006-2-2 BKfcK>%g
* @version 1.0 |E0>-\6
*/ !Sfy'v.
public class InsertSort implements SortUtil.Sort{ R!;tF|]
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/* (non-Javadoc) {&8-OoH ~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) esx<feP)\
*/ eX7Ev'(H
public void sort(int[] data) { \v{tK;
int temp; 4m$n Vv
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5#s?rA%u
} Rv
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冒泡排序: ?JDZDPVJ)
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package org.rut.util.algorithm.support; aM5zYj`pW
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import org.rut.util.algorithm.SortUtil; 1HL}tG?+#
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/** XWZ
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* @author treeroot o!^':mll
* @since 2006-2-2 c 6@!?8J
* @version 1.0 =K .' x
*/ 5c($3Pno=
public class BubbleSort implements SortUtil.Sort{ ?Q;8D@
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/* (non-Javadoc) (p26TN;*$5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .]0B=w* Z
*/ ;({&C34a
public void sort(int[] data) { tiSN amvG1
int temp; I
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for(int i=0;i for(int j=data.length-1;j>i;j--){ +u'
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if(data[j] SortUtil.swap(data,j,j-1); KG6ki_
} }legh:/*?O
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} @|(mR-Jj
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选择排序: VlRN
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package org.rut.util.algorithm.support; [
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import org.rut.util.algorithm.SortUtil; &Z/aM?
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/** ))|Wm}
* @author treeroot $UavM|
* @since 2006-2-2 vg"y$%
* @version 1.0 UhYeyT
*/ <at/z9b
public class SelectionSort implements SortUtil.Sort { T^g2N`w2
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/* n o`c[XY
* (non-Javadoc) 2s>dlz
* JO\Tf."a \
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eU'DQp*
*/ B~QX{
public void sort(int[] data) { J*$u
int temp; [>QV^2'Z
for (int i = 0; i < data.length; i++) { -hj@^Auf
int lowIndex = i; ojU:RRr4l$
for (int j = data.length - 1; j > i; j--) { =k6zUw;5 U
if (data[j] < data[lowIndex]) { Vd~{SS2>
lowIndex = j; -FV$Sne
} z=:<]j#=
} ,IoPK!5xy
SortUtil.swap(data,i,lowIndex); DKgwi'R
} Q1 ?O~ao
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Shell排序: 3IQ)%EN
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package org.rut.util.algorithm.support; lMz5))Rr
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import org.rut.util.algorithm.SortUtil;
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/** [` ~YPUR*
* @author treeroot ~L(=-B`Ow
* @since 2006-2-2 P/snzm|@
* @version 1.0 /3->TS
*/ Z_Jprp{3h
public class ShellSort implements SortUtil.Sort{ 7_C;-
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/* (non-Javadoc) zJJ
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B5h-JON]-
*/ 7^,C=2
public void sort(int[] data) { 5Nc~cD%0tK
for(int i=data.length/2;i>2;i/=2){ oR (hL4Dc
for(int j=0;j insertSort(data,j,i); +shT}$cb1
}
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} n^P=a'+
insertSort(data,0,1); 6Ug(J$Ouh
} vRa|lGeW
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/** ModwJ
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* @param data 4GWt.+{J$
* @param j >!O3 jb k
* @param i p'UY Ht
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private void insertSort(int[] data, int start, int inc) { [^xLK
int temp; iTsmUq<b]l
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); RG/M-
} ?:l3O_U5
} Qr]xj7\@i
} mqgA
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快速排序: )\!_`ob
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package org.rut.util.algorithm.support; IJHNb_Cku
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import org.rut.util.algorithm.SortUtil; z{:T~s
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/** hZNS$
* @author treeroot yf`Nh
* @since 2006-2-2 K6<@DP+/
* @version 1.0 &!>
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*/ .),ql_sXr
public class QuickSort implements SortUtil.Sort{ {~NiGHY
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/* (non-Javadoc) )RA$E`!b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 's]I:06A
*/ ufF$7@(+
public void sort(int[] data) { Ut:>'TwG
quickSort(data,0,data.length-1); r0kJx$f
} P2_UQ
private void quickSort(int[] data,int i,int j){ fwaq
int pivotIndex=(i+j)/2; gN#&Ag<?
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SortUtil.swap(data,pivotIndex,j); YEfa8'7R
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int k=partition(data,i-1,j,data[j]); Z)E[Bv=
SortUtil.swap(data,k,j); $s$j</.q
if((k-i)>1) quickSort(data,i,k-1); o&45y&
if((j-k)>1) quickSort(data,k+1,j); r #H(kJu,
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} %|mRib|<C
/** g/H:`J
* @param data }{"a}zOl
* @param i Brw-"tmx
* @param j !GJnYDN
* @return &h)G>Sqc
*/ ygt7;};!
private int partition(int[] data, int l, int r,int pivot) { -*q:B[d
do{ TAfLC)
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); <>3}<i<[&
SortUtil.swap(data,l,r); paFiuQ
} !OwRx5
while(l SortUtil.swap(data,l,r); -h=K]Y{`
return l; !63>I I
} jSMvZJX3n
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改进后的快速排序: jys1Ki
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package org.rut.util.algorithm.support; s^5KFK1
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import org.rut.util.algorithm.SortUtil; ?UD2}D[M
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/** -]8cw#y
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* @author treeroot QcZ*dI7]:
* @since 2006-2-2 xw?Mc{w
* @version 1.0 MQD%m ;[s
*/ tqI]S
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public class ImprovedQuickSort implements SortUtil.Sort { SplEY!.k
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private static int MAX_STACK_SIZE=4096; QWt?` h=
private static int THRESHOLD=10; u= a5Z4 N'
/* (non-Javadoc) UhQsT^b_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jjt'R`t%t
*/ .j*muDVQn
public void sort(int[] data) { eWjLP{W
int[] stack=new int[MAX_STACK_SIZE]; J*)Vpk
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int top=-1; |&JCf=
int pivot; dB{o-R
int pivotIndex,l,r; 6"+/Imb-
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stack[++top]=0; z+ybtS>pZ
stack[++top]=data.length-1; b"U{@
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while(top>0){ i:ar{ q
int j=stack[top--]; "PA:
int i=stack[top--]; F
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pivotIndex=(i+j)/2; d\FBY&C7b
pivot=data[pivotIndex]; %'2DEt??
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SortUtil.swap(data,pivotIndex,j); BMlnzi
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file://partition R~40,$e{
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do{ ICSi<V[y1
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); sQt]Y&_/@
SortUtil.swap(data,l,r); *b+ef
} x5q5<-#
while(l SortUtil.swap(data,l,r); vby[#S|
SortUtil.swap(data,l,j); ?)=A[
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if((l-i)>THRESHOLD){ YJZViic
stack[++top]=i; )bc0 t]Fs
stack[++top]=l-1; B%HG7
} ;>?NH6B,
if((j-l)>THRESHOLD){ c}9.Or`?
stack[++top]=l+1; Hm=!;xAFX
stack[++top]=j; |G.|ocj;
} Sp+ zP-3
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} 9F8"(
file://new InsertSort().sort(data); 6onFf* m!x
insertSort(data); \(9hg.E
} h
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/** 0rbMT`Hy
* @param data X) lz BM
*/ JTuU}nm+
private void insertSort(int[] data) { t!MGSB~
int temp;
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); U8_<?Hd
} E0XfM B]+
} $5XE'm
} RJ/4T#b"+
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} E"p;
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归并排序: ?1\rf$l8
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package org.rut.util.algorithm.support; =aM(r6 C
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import org.rut.util.algorithm.SortUtil; C*A!`Q?1Y
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/** dTN[E6#R
* @author treeroot .t\#>Fe
* @since 2006-2-2 :q_(=EA
* @version 1.0
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*/ 5;{Q >n
public class MergeSort implements SortUtil.Sort{ O,m0Xb2s]~
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/* (non-Javadoc) koQ\]t'*As
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u-yVc*<,
*/ E0 ~\ A;
public void sort(int[] data) { `_`\jd@
int[] temp=new int[data.length]; oC"1{ybyl
mergeSort(data,temp,0,data.length-1); WCf?_\cG
} |Nx7jGd:i
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private void mergeSort(int[] data,int[] temp,int l,int r){ h B@M5Mc$
int mid=(l+r)/2; v#yeiE4
if(l==r) return ; N@Fof(T&
mergeSort(data,temp,l,mid); h+,Eu7\88
mergeSort(data,temp,mid+1,r); Rd|#-7
for(int i=l;i<=r;i++){ HB+{vuN*L
temp=data; O7&