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。 ml0.$z
插入排序: tM-^<V&
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package org.rut.util.algorithm.support; h&.wo !
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import org.rut.util.algorithm.SortUtil; Pg9hW
/** tWTKgbj(
* @author treeroot R[z`:1lo
* @since 2006-2-2 p.}Ls)I
* @version 1.0 '7wd$rl
*/ ih,%i4<}6m
public class InsertSort implements SortUtil.Sort{ ah
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/* (non-Javadoc) g4`Kp;}&'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |(moWY=
*/ IK,|5] *Ar
public void sort(int[] data) { D|Iur W1f
int temp; gqXS~K9t
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6S6f\gAM
} HEL!GC>#
} w-Nhs6
}
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冒泡排序: &l$Q^g
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package org.rut.util.algorithm.support; x!\ONF5$
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import org.rut.util.algorithm.SortUtil; 8+]hpa,q
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/** #HS]NA|e@
* @author treeroot AL$&|=C-$
* @since 2006-2-2 izh<I0
* @version 1.0 *Av"JAX
*/ &g2 Eptx#
public class BubbleSort implements SortUtil.Sort{ q-nSLE+_;
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/* (non-Javadoc) Kvsh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hcVJBK
*/ syU9O&<
public void sort(int[] data) { y/e2l
int temp; dz~co Z9
for(int i=0;i for(int j=data.length-1;j>i;j--){ ,q(&)L$S
if(data[j] SortUtil.swap(data,j,j-1); bjAnaya
} #r
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} 7+x? "4
} ^pM+A6
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选择排序: *:i1Lv@
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package org.rut.util.algorithm.support; ikE<=:pe
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import org.rut.util.algorithm.SortUtil; yj4+5`|f
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/** Ax !+P\\2~
* @author treeroot ==i[w|
* @since 2006-2-2 ngj,x7t
* @version 1.0 .>z][2oz
*/ Bgmn2-
public class SelectionSort implements SortUtil.Sort { E}%hz*Q)(
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/* qfcYE=
* (non-Javadoc) JCAq8=zM
* <~
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3\T2?w9u(
*/ 4v[~r1!V
public void sort(int[] data) { g$.
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int temp; ;n|^1S<[
for (int i = 0; i < data.length; i++) { ~4q5
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int lowIndex = i; }I`a`0/
for (int j = data.length - 1; j > i; j--) { iNwqF0
if (data[j] < data[lowIndex]) { <b/~.$a'
lowIndex = j; UT}i0I9
} oD}uOC}FS{
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SortUtil.swap(data,i,lowIndex); EGl^!.'
} "UwH\T4I
} bQ|V!mrN}
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Shell排序: "`6n6r42
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package org.rut.util.algorithm.support; Zo>]rKeV
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import org.rut.util.algorithm.SortUtil; {BHI1Uw
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/** Gycm,Cy
* @author treeroot dg4vc][
* @since 2006-2-2 $ cj>2.
* @version 1.0 R *F l8
*/ YJ(*wByM
public class ShellSort implements SortUtil.Sort{ G%d
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/* (non-Javadoc) yoAfc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |p$spQ
*/ ePIiF_X
public void sort(int[] data) { _=|vgc
for(int i=data.length/2;i>2;i/=2){ l7De6A"
for(int j=0;j insertSort(data,j,i); Fd*8N8Pi
} :x_'i_w
} TIvRhbu
insertSort(data,0,1); 'mV9 {lj7E
} If%/3UJ@
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/** #nh|=X
* @param data 1
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* @param j |>z3E z
* @param i G9JAcO1
*/ (rg;IXAq%
private void insertSort(int[] data, int start, int inc) { )?wJF<[_#
int temp; ;2Q~0a|
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); vX ] Gf4,
} sUE?v9
} &>H!}"Yk
} KN-avu_Ix
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} vOg#Dqn-
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快速排序: "Ky; a?Y
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; F`9]=T0
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/** |^@dFOz
* @author treeroot *{+G=d
* @since 2006-2-2 Zdn~`Q{
* @version 1.0 "?mJqA
*/ 2U-3Q]/I}
public class QuickSort implements SortUtil.Sort{ [LRLJ_~g5
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/* (non-Javadoc) '}Ri`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eilYA_FL.
*/ I"KN"v^
public void sort(int[] data) { +>4;Z d!@d
quickSort(data,0,data.length-1); r;m)nRu
} f|sFlUu&
private void quickSort(int[] data,int i,int j){ <I"S#M7-s
int pivotIndex=(i+j)/2; 6S~sVUL9`
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SortUtil.swap(data,pivotIndex,j); EAeqLtFqs
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int k=partition(data,i-1,j,data[j]); t:fFU1x
SortUtil.swap(data,k,j); -1J[n0O.
if((k-i)>1) quickSort(data,i,k-1); + T8B:
if((j-k)>1) quickSort(data,k+1,j); )Y)pmjZaG
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} +k`!QM>e-
/** +E1h#cc)
* @param data : "1XPr
* @param i +o9":dl
* @param j : >>@rF ,
* @return -+O
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*/ 4Fm90O
private int partition(int[] data, int l, int r,int pivot) { NB<A>baL*
do{ 2+X\}s1vN
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 'e6WDC1Am(
SortUtil.swap(data,l,r); 5#K4bA
} XU"~h64]
while(l SortUtil.swap(data,l,r); $1v&azM.
return l; J(6oL
} i'\T R|qd
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} [}&Sxgv
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改进后的快速排序: Xn{1 FJX/
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package org.rut.util.algorithm.support; v,ju!I0.
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import org.rut.util.algorithm.SortUtil; ,{c?ym w?
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/** Phke`3tth
* @author treeroot @*sWu_-Y%
* @since 2006-2-2 4t)/
* @version 1.0 AF%@VLf
*/ GI&h`X5,e
public class ImprovedQuickSort implements SortUtil.Sort { KVJ_E!i
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private static int MAX_STACK_SIZE=4096; pxa(
private static int THRESHOLD=10; s;A@*Y;v
/* (non-Javadoc) cb}[S:&|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uS^Ipxe\
*/ ow]053:i
public void sort(int[] data) { MNV%
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int[] stack=new int[MAX_STACK_SIZE]; D
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int top=-1; mWvl38
int pivot; X*\J_
int pivotIndex,l,r; #{\%rWnCm
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stack[++top]=0; 6AhM=C
stack[++top]=data.length-1; E@b(1@
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while(top>0){ GN2Sn`;
int j=stack[top--]; lg&t8FHa;
int i=stack[top--]; pfI"36]F
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pivotIndex=(i+j)/2; 9B9(8PVG
pivot=data[pivotIndex]; 5^x1cUB]
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SortUtil.swap(data,pivotIndex,j); -jiG7OL
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r=j; f=9|b
do{ qXwPDq/
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); r%+V8o
SortUtil.swap(data,l,r); pS7w' H
} Bf8jPa/
while(l SortUtil.swap(data,l,r); t)}scf&^x
SortUtil.swap(data,l,j); ;-qO'V:;
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if((l-i)>THRESHOLD){ l~$+,U&XNe
stack[++top]=i; %B.yW`,X
stack[++top]=l-1; _BP&n