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。 'rX!E,59
插入排序: xjplJ'jB
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package org.rut.util.algorithm.support; )Ycjx~
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import org.rut.util.algorithm.SortUtil; o!";&\,Ip
/** 8l, R|$RKP
* @author treeroot ?/SI A9VK
* @since 2006-2-2 {5$.:Y
* @version 1.0 U1Z.#ETnM
*/ RO]Vn]qb
public class InsertSort implements SortUtil.Sort{ \R6D'Yt
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/* (non-Javadoc) 4^KeA".
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K_fQFuj+
*/ #K5)Rb-H
public void sort(int[] data) { }=+J&cR
int temp; #-0}r
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *G<K@k
} rr@S|k:|
} Gs2|#*6
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冒泡排序: r&u&$"c
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package org.rut.util.algorithm.support; DvBL#iC
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import org.rut.util.algorithm.SortUtil; H\zV/1~Y
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/** l;N?*2zm[
* @author treeroot <3[,bTIk
* @since 2006-2-2 &.>
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* @version 1.0 CSUXa8u7
*/ ?"d25LyN
public class BubbleSort implements SortUtil.Sort{ IfK%i/J
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/* (non-Javadoc) <vMdfw"(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IQ${2Dpg[
*/ doIcO,Q
public void sort(int[] data) { q0Hor
int temp; z
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for(int i=0;i for(int j=data.length-1;j>i;j--){ 7Vn;LW
if(data[j] SortUtil.swap(data,j,j-1); Nq$Xe~,*
} O}Ipg[h
} cZd9A(1"^
} ^#-i%V%
} n<}t\<LG^c
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} Ewfzjc
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选择排序: CJ@G8>
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package org.rut.util.algorithm.support; Wfw6(L
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import org.rut.util.algorithm.SortUtil; ]M:=\h,t>
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/** kp{q5J6/
* @author treeroot )A@i2I
* @since 2006-2-2 j>OuNeo@4
* @version 1.0 ,#NH]T`c1
*/ Z=L~W,0'
public class SelectionSort implements SortUtil.Sort { pb\W7G
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/* #@i1jZ
* (non-Javadoc) *0*1.>Vg
* LD.^.4{c:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Za*QX|
*/ Xy0KZ !
public void sort(int[] data) { #o(c=
int temp; VGHy|5K$
for (int i = 0; i < data.length; i++) { @T
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int lowIndex = i; 8hKyp5(%l
for (int j = data.length - 1; j > i; j--) { 9XH}/FcP_O
if (data[j] < data[lowIndex]) { 82EH'C
lowIndex = j; l]bCt b%_
} shn{]Y
} e=8z,.Xk
SortUtil.swap(data,i,lowIndex); <9BM%
} +2ZBj6 e9
} ;RmL'
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} e5"?ol0
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Shell排序: /+11`B09
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package org.rut.util.algorithm.support; 5D~>Ed;
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import org.rut.util.algorithm.SortUtil; 5ree3 quh
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/** voD0u
* @author treeroot 6F@2:]W
* @since 2006-2-2 jRCf!RO
* @version 1.0 kW
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*/ ';CL;A ;
public class ShellSort implements SortUtil.Sort{ ?>\JX
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/* (non-Javadoc) "I7 Sed7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OLl?1
*/ Dd=iYMm7
public void sort(int[] data) { ITq$8
for(int i=data.length/2;i>2;i/=2){ x+X^K_*
for(int j=0;j insertSort(data,j,i); Y!+q3`-%T
} ql+tqgo
} +1R
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insertSort(data,0,1); ;)SWUXa;{
} 3hPj;-u
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/** M.[A%_|P
* @param data r
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* @param j PXH"%vVF
* @param i MV~-']2u
*/ ^EG@tB $<
private void insertSort(int[] data, int start, int inc) { 7p!w(N?s
int temp; VkD8h+)
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); C4`u3S
} ,^>WCG
} q3~RK[OCq
} {e3XmVAI
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} ~I_v {
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快速排序: OFyZY@B-C~
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package org.rut.util.algorithm.support; On^jHqLaE
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import org.rut.util.algorithm.SortUtil; >`@c9
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/** I|{A&G}|q
* @author treeroot Wb|xEwq d`
* @since 2006-2-2 X`,]@c%C`
* @version 1.0 7n_'2qY
*/ !aVwmd'9
public class QuickSort implements SortUtil.Sort{ l5 FM>q
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/* (non-Javadoc) \Jcj4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X5M{No>z
*/ ;M95A
public void sort(int[] data) { CXzN4!
quickSort(data,0,data.length-1);
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} 1e0O-aT#Q
private void quickSort(int[] data,int i,int j){ =36e&z-#
int pivotIndex=(i+j)/2; S!/N
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SortUtil.swap(data,pivotIndex,j); v7L}I[f
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int k=partition(data,i-1,j,data[j]); )bM #s">Y
SortUtil.swap(data,k,j); kH)JBx.
if((k-i)>1) quickSort(data,i,k-1); )k@+8Yfa1p
if((j-k)>1) quickSort(data,k+1,j); !A 6l\_
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} NWGSUUa
/** Gob;dku
* @param data Rj/9\F3H
* @param i 7=o2$
* @param j OZw<YR
* @return P p}N-me>_
*/ m-~eCFc
private int partition(int[] data, int l, int r,int pivot) { $S"QyAH~-a
do{ BBub'
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); lO+<T[
SortUtil.swap(data,l,r); n(mS
} @;-6qZ
while(l SortUtil.swap(data,l,r); (N etn&
return l; %7_c|G1
} #$vef
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} $jd>=TU|
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改进后的快速排序: ~~.v*C[
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package org.rut.util.algorithm.support; =,aWO7Pz
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import org.rut.util.algorithm.SortUtil; LE15y>
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/** cU y,q]PO
* @author treeroot "CEy r0h
* @since 2006-2-2 S=Ihg
* @version 1.0 L"i
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*/ ^6?NYHMr=
public class ImprovedQuickSort implements SortUtil.Sort { <JA`e+Bi
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private static int MAX_STACK_SIZE=4096;
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private static int THRESHOLD=10; W#<&(s4
/* (non-Javadoc) Dm@wTt8N(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XUD/\MoV
*/ Y$^x.^dT,
public void sort(int[] data) { kT(}>=]g
int[] stack=new int[MAX_STACK_SIZE]; Nk-biD/J
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int top=-1; qAH@)}
int pivot; HQ%-e5Q
int pivotIndex,l,r; Z\=].[,w4
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stack[++top]=0; dqMR<Nl&
stack[++top]=data.length-1; wHW";3w2~
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while(top>0){ \C3ir &
int j=stack[top--]; p}KZ#"Q
int i=stack[top--]; w;.'>ORC
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pivotIndex=(i+j)/2; -jB1tba
pivot=data[pivotIndex]; +#5nk,1c>
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SortUtil.swap(data,pivotIndex,j); H_'i.t 'SS
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do{ 9l+`O0.@
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Vw*;xek?
SortUtil.swap(data,l,r); JMu|$"o&{
} &nk6_{6
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while(l SortUtil.swap(data,l,r); ?)#dP8n
SortUtil.swap(data,l,j); AElx #`T
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if((l-i)>THRESHOLD){ \5^#5_<
stack[++top]=i; pN<wO1\9
stack[++top]=l-1; p.q:vI$J
} ?@9kVB*|
if((j-l)>THRESHOLD){ :X[(ymWNE
stack[++top]=l+1; Q>nq~#3?
stack[++top]=j; L0SeG:
} kZ+nL)YQ#
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} cgsM]2ZYs
file://new InsertSort().sort(data); vy#n7hdCc
insertSort(data); zIWw055W
} CjM+%l0MW
/** Qi|jL*mj&
* @param data XOO!jnQu
*/ hS&,Gm`^
private void insertSort(int[] data) { *
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int temp; nMD^x
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 38!$9)
} Vb06z3"r
} I#Ay)+D
} KzZ!
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} K1Nhz'^=D
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归并排序: @(PYeXdV6&
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package org.rut.util.algorithm.support; $b\`N2J-_
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import org.rut.util.algorithm.SortUtil; o:_}=1nh
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/** A!s\; C
* @author treeroot 8qn1?Lb
* @since 2006-2-2 _*6nTSL
* @version 1.0 aT[Z#Zd, N
*/ CJk$o K{Q
public class MergeSort implements SortUtil.Sort{ st(l85
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/* (non-Javadoc) LF
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a ^<W
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*/ Dna0M0
public void sort(int[] data) { < i*v
int[] temp=new int[data.length]; =C8 t5BZ"
mergeSort(data,temp,0,data.length-1); /ZZo`
} j]}A"8=1
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private void mergeSort(int[] data,int[] temp,int l,int r){ mq$'\c
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int mid=(l+r)/2; z`((l#(
if(l==r) return ; ;oVdkp
mergeSort(data,temp,l,mid); M4pEwD
mergeSort(data,temp,mid+1,r); R_\{a*lV0
for(int i=l;i<=r;i++){ (;P)oB"`C
temp=data; EP&