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。 4'&j<Ah[#
插入排序: Oeua<,]Z~
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package org.rut.util.algorithm.support; BUH~aV
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import org.rut.util.algorithm.SortUtil; q1 :Y]Rbe
/** G~,K$z/-l
* @author treeroot (~YFm"S
* @since 2006-2-2 =5NM
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* @version 1.0 R|7yhsJq,
*/ ( K5w0
public class InsertSort implements SortUtil.Sort{ I\NiA>c
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/* (non-Javadoc) gv&%2e} _
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nZ;h&N-_-
*/ +f{CfWIKs
public void sort(int[] data) { A=Au>"nAA
int temp; qT`sPEs;V
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )&G
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} bFivHms
} 8.Q;o+NU
} f1cQ*#2~
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} Ql1HaC/5)-
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冒泡排序: Y{].%xM5
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package org.rut.util.algorithm.support; em^|E73
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import org.rut.util.algorithm.SortUtil; ]Y#$!fIx
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/** `;[j`v8O
* @author treeroot JCjQR`)
* @since 2006-2-2 uZsm=('ww
* @version 1.0 UlBg6
*/ s?;rP,{:p
public class BubbleSort implements SortUtil.Sort{ . &dh7`l
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/* (non-Javadoc) 0\G`AO;D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aGK =VN}r
*/ Q>\y%&df
public void sort(int[] data) { ML6V,V/e
int temp; i^c
for(int i=0;i for(int j=data.length-1;j>i;j--){ K6#9HF'2I
if(data[j] SortUtil.swap(data,j,j-1); 7X3<8:%
} N3P!<J/tc
} &Gp~)%
} x+j5vzhG)
} t`b>iX%(1t
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} Da#|}m0>
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选择排序: ld~8g,
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package org.rut.util.algorithm.support; 3kxI'0&T
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import org.rut.util.algorithm.SortUtil;
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/** x:TBZh?@$
* @author treeroot 9>qc 1z
* @since 2006-2-2 */gm! :Ym
* @version 1.0 az7<@vSXi
*/ /0(2PVf
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public class SelectionSort implements SortUtil.Sort { GO@pwq<
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/* x`'2oz=,F4
* (non-Javadoc) IY@)
* j%%l$i~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =Qt08,.bW
*/ b .9]b
public void sort(int[] data) { {I s?>m4
int temp; v:s.V>{"S
for (int i = 0; i < data.length; i++) { !"u) `I2
int lowIndex = i; Nrl&"IK|J
for (int j = data.length - 1; j > i; j--) { <v<TsEI
if (data[j] < data[lowIndex]) { nQ\ +Za==
lowIndex = j; lQs|B '
} "hRw_<
} vkmTd4g
SortUtil.swap(data,i,lowIndex); @kR/=EfS
} V1R=`
} <y${Pkrj
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} ayfZ>x{s*
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Shell排序: `Q2
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package org.rut.util.algorithm.support; S[fzy$">
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import org.rut.util.algorithm.SortUtil; hw`+,_ g
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/** x{u7# s1|/
* @author treeroot pm<zw-
* @since 2006-2-2 {r2-^QHF
* @version 1.0 *#j+,q!X
*/ ~8'4/wh+8
public class ShellSort implements SortUtil.Sort{ ,RFcR[ak
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/* (non-Javadoc) wAE,mw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m
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*/ =re1xR!E5
public void sort(int[] data) { Y$3H$F.+
for(int i=data.length/2;i>2;i/=2){ mq$mB1$3u
for(int j=0;j insertSort(data,j,i); EZkg0FhkZ
} q|J3]F !n
} x;NCW
insertSort(data,0,1); KK-9[S-
} /kGRN@
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/** M70X dn
* @param data A:3bL:
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* @param j +O23@G?x
* @param i '>(R'g42n
*/
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private void insertSort(int[] data, int start, int inc) { T:Dp+m!\{
int temp; 'tK5s>gv<
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); se](hu~w
} ;czMsHu0X
} pfW0)V1t
} 1
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} 3=xb%Upw
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快速排序: TRG(W^<F
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package org.rut.util.algorithm.support; ToIvyeFr
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import org.rut.util.algorithm.SortUtil; CQfrAk4mu
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/** 6L~@jg~0A[
* @author treeroot \RZFq<6>
* @since 2006-2-2 UJkg|eu
* @version 1.0 #3maT*JY
*/ 'UO,DFq[Fl
public class QuickSort implements SortUtil.Sort{ TDg#O!DUF
JDVMq=ui
/* (non-Javadoc) "H>L!v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pYV$sDlD
*/ q4vu r>m6
public void sort(int[] data) { KU[eY}
quickSort(data,0,data.length-1); 6~\z]LZ
} UM%[UyYQ
private void quickSort(int[] data,int i,int j){ "iE9X.6NMu
int pivotIndex=(i+j)/2; ^GdU$%aa
file://swap }NPF]P;
SortUtil.swap(data,pivotIndex,j); We3*WsX\
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int k=partition(data,i-1,j,data[j]); Y?hC/6$7
SortUtil.swap(data,k,j); p2|c8n==
if((k-i)>1) quickSort(data,i,k-1); ABEC{3fWpu
if((j-k)>1) quickSort(data,k+1,j); zcItZP
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} ZjY_AbD
/** =flgKRKk.r
* @param data ~,yHE3B\G
* @param i jz c/Olb
* @param j p8y_uNQE
* @return /zn|?Y[
*/ J=>?D@K
private int partition(int[] data, int l, int r,int pivot) { eSXt"t
do{ I,Q"<?&
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); [@[!esC
SortUtil.swap(data,l,r); aR.1&3fE
} 7\d{F)7E
while(l SortUtil.swap(data,l,r); 6\4ny 0
return l; 9}kN9u
} !mK[kXo
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} ]aq!@rDX
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改进后的快速排序: IXt2R~b
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package org.rut.util.algorithm.support; u3kK!2cdP
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import org.rut.util.algorithm.SortUtil; o7VNw8Bp
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/** "+s#!Fh *
* @author treeroot LU4\&fd
* @since 2006-2-2 ,.tT9?
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* @version 1.0 EDvK9J
*/ _Jj/"?
public class ImprovedQuickSort implements SortUtil.Sort { qie7iE`o
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private static int MAX_STACK_SIZE=4096; 8 f%@:}H
private static int THRESHOLD=10; ` 1DJwe2
/* (non-Javadoc) ?RvXO'm l
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VE^NSkOa&
*/ (,Yb]/O*
public void sort(int[] data) { ws
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int[] stack=new int[MAX_STACK_SIZE]; hNc;,13
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int top=-1; ?ECmPS1
int pivot; )H$Ik)/N
int pivotIndex,l,r; sj2v*tFb
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stack[++top]=0; B?-RzWB\3
stack[++top]=data.length-1; dv-yZRU:
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while(top>0){ Y5=~>*e
int j=stack[top--]; !U}A1)
int i=stack[top--]; @B
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pivotIndex=(i+j)/2; 'Z'X`_
pivot=data[pivotIndex]; oT&JQ,i[2Q
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SortUtil.swap(data,pivotIndex,j); ]>/YU*\
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file://partition sF]v$kq
l=i-1; y?<[g;MuT
r=j; VgZ<T,SuW
do{ Gk,{{:M:5
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); MLY19 ;e
SortUtil.swap(data,l,r); M$-4.+G
} hxx,E>k
while(l SortUtil.swap(data,l,r); _`/0/69
SortUtil.swap(data,l,j); wQ!~c2a<8
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if((l-i)>THRESHOLD){ |K'{R'A
stack[++top]=i; tu77Sb
stack[++top]=l-1;
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} N<hbV0$ %
if((j-l)>THRESHOLD){ 3XY$w&