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。 F=~LVaF/_
插入排序: 6B`,^8Lp
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package org.rut.util.algorithm.support; z%Ivc*x5
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import org.rut.util.algorithm.SortUtil; Ln&CB!u
/** u_X(c'aE;
* @author treeroot (c1Kg
* @since 2006-2-2 I8{ohFFo
* @version 1.0 hwd{^
*/ a3[lZPQe
public class InsertSort implements SortUtil.Sort{ T6Ks]6m_
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/* (non-Javadoc) ue"e><c6:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vB1nj<]&z
*/ xY1@Ja
public void sort(int[] data) { _gI1@uQw
int temp; ed4`n!3
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;$rh&ET
} %3 VToj@`>
} )dZ1$MC[
} 3C(V<R?
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} R'x^Y"
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冒泡排序: Dh B*k<S
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package org.rut.util.algorithm.support; &=hkB9
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import org.rut.util.algorithm.SortUtil; <l"rn M%
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/** :,Ad1(
* @author treeroot VfJdCg_
* @since 2006-2-2 9:]|TIPi
* @version 1.0 FpFkZFtG'm
*/ Ej/P:nB
public class BubbleSort implements SortUtil.Sort{ *K2fp=Ns
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/* (non-Javadoc) qBXIR}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yc3i> w`
*/ 8VR!
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public void sort(int[] data) { hR%2[lBn!]
int temp; QKtVwsz
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for(int i=0;i for(int j=data.length-1;j>i;j--){ )SsO,E+t=U
if(data[j] SortUtil.swap(data,j,j-1); a
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} LQ.0"6oj
} Xrd-/('2
} T96M=?wh!
} ^DOQ+
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} :`20i*
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选择排序: SbN.z
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package org.rut.util.algorithm.support; D|E,9|=v
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import org.rut.util.algorithm.SortUtil; OZi4S3k
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/** <Z\j#p:
* @author treeroot +IPMI#n
* @since 2006-2-2 >`u/#mrd
* @version 1.0 g,d'&r"JWt
*/ jv'q:uA ^
public class SelectionSort implements SortUtil.Sort { fD ?w!7f-1
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/* cux<7#6af
* (non-Javadoc) v.Zr,Z=eV
* 25/OV"Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^9A,j}>o-
*/ V"R ,omh
public void sort(int[] data) { cHk ?$
int temp; Sx}61 ?
for (int i = 0; i < data.length; i++) { 40R7@Vaf
int lowIndex = i; *-.,QpgTX
for (int j = data.length - 1; j > i; j--) { 7)37AK w
if (data[j] < data[lowIndex]) { S7WT`2
lowIndex = j; $ J)2E g
} O>kM2xw
} 0rj50$~$]
SortUtil.swap(data,i,lowIndex); T~b6Zu6
} #CTHCwYo
} /eNDv(g)M
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} njg\y
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Shell排序: "%]vSr
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package org.rut.util.algorithm.support; Q 2nqA1sRk
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import org.rut.util.algorithm.SortUtil; +EE(d/f
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/** Nvj0MD{ X
* @author treeroot rX@?~(^ML
* @since 2006-2-2 Spt;m0W90
* @version 1.0 C!s !j
*/ {;E]#=|
public class ShellSort implements SortUtil.Sort{ J^)=8cy
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/* (non-Javadoc) ^.~m4t`U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;P!x/Ct
*/ r>3y87
public void sort(int[] data) { 1@{qPmf^
for(int i=data.length/2;i>2;i/=2){ J!@`tR-
for(int j=0;j insertSort(data,j,i); 4+'d">+|
} u:GDM
} .rs\%M|X
insertSort(data,0,1); /w2jlu}yt
} '
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/** vfPIC!
* @param data RI#o9d"x}
* @param j p~NFiZ,
* @param i
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*/ g]Fm%iy
private void insertSort(int[] data, int start, int inc) { v"J7VF2
int temp; fe$O Pl~
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); !@wG22iC4d
} ?fmW'vs
} bFtzwa5Gc
} a<d$P*I(cH
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} PWbi`qF)r
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快速排序: Qa-~x8 ]
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package org.rut.util.algorithm.support; nHTb~t5Ke
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import org.rut.util.algorithm.SortUtil; T
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/** 6V^KOG
* @author treeroot Fooa~C"
* @since 2006-2-2 KmE<+/x~?
* @version 1.0 "?SR+;Y:q
*/ `6QQS3fk!
public class QuickSort implements SortUtil.Sort{ d6ABgQi0
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/* (non-Javadoc) `R{ ZED
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >J>|+W
*/ #;~dA
public void sort(int[] data) { Dh~Z8!*
quickSort(data,0,data.length-1); #uillSV
} n9x&Ws;
private void quickSort(int[] data,int i,int j){ $mZpX:7/u8
int pivotIndex=(i+j)/2; ^#)M,.G^
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SortUtil.swap(data,pivotIndex,j); [$P.ek<
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int k=partition(data,i-1,j,data[j]); Y%A
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SortUtil.swap(data,k,j); nH -1,#`g
if((k-i)>1) quickSort(data,i,k-1); IQA<xqX
if((j-k)>1) quickSort(data,k+1,j); T_1p1Sg
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} rm nfyn
/** `UH 1B/
* @param data h&$,mbEoI
* @param i o YNp0Hc
* @param j <;.->73E
* @return 2*1FW v
*/ <"rckPv_H
private int partition(int[] data, int l, int r,int pivot) { x.-d>8-!]c
do{ sg!*%*XQ
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); jYi{[**
SortUtil.swap(data,l,r); GtNGrJU
} X=d;WT4,,
while(l SortUtil.swap(data,l,r); *2tG07kI
return l; I}{Xv#@o
} rGxX]
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} 06peo
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改进后的快速排序: 875BD U
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package org.rut.util.algorithm.support; %B{NH~
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import org.rut.util.algorithm.SortUtil; wBK%=7
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/** M$Of.
* @author treeroot CWk65tcF
* @since 2006-2-2 ;4 rTm@6
* @version 1.0 >4lT0~V/
*/ P Zc{wbjp&
public class ImprovedQuickSort implements SortUtil.Sort { >HH49cCo
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private static int MAX_STACK_SIZE=4096; zrJ/Fs+s
private static int THRESHOLD=10; |vY0[#E8&
/* (non-Javadoc) d|8iD`sZz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %Kq`8
*/ &QL!Y{=Y6
public void sort(int[] data) { cjel6 nj
int[] stack=new int[MAX_STACK_SIZE]; / NlT[@T
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int top=-1; &@MiR8
int pivot; c#6g[TE@
int pivotIndex,l,r; *1[v08?!
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stack[++top]=0; '!6Py1i
stack[++top]=data.length-1; g,
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while(top>0){ o?$B<Cb"
int j=stack[top--]; URFp3 qE
int i=stack[top--]; =NHzh!
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pivotIndex=(i+j)/2; uM^eoh_
pivot=data[pivotIndex]; m% {4
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SortUtil.swap(data,pivotIndex,j); 1E*No1
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file://partition 6SIk,Isy8
l=i-1; 1*"t-+|
r=j; DGwN*>X
do{ u(s/4Lu
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); domaD"C
SortUtil.swap(data,l,r); -K_p?
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} <6s?M1J
while(l SortUtil.swap(data,l,r); BWct0=
SortUtil.swap(data,l,j); E .kjYIH8
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if((l-i)>THRESHOLD){ xjOj1Hv
stack[++top]=i; MxY~(TVPK
stack[++top]=l-1; -U?Udmov
} Eo$7W5hJ
if((j-l)>THRESHOLD){ WmRx_d_
stack[++top]=l+1; eL-9fld/n
stack[++top]=j; &O