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。 m/AN*`V
插入排序: /2@@v|QL
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; X1"nq]chGy
/** zqkmsFH{
* @author treeroot 9^tyjX2
* @since 2006-2-2 {PKER$C
* @version 1.0 \!3='~2:=o
*/ j3><J
public class InsertSort implements SortUtil.Sort{ %O${EN
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/* (non-Javadoc) BJ5#!I%h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g d -fJ._1
*/ mN`a]L'
public void sort(int[] data) { MgekLP)&
int temp; T$e_ao|
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); I
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} uu>g(q?4II
} a4yU[KK
} NO1PGen
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冒泡排序: >+r2I%
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package org.rut.util.algorithm.support; ?m6E@.{
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import org.rut.util.algorithm.SortUtil; ~xCy(dL^}
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/** 0Ju{6x(|
* @author treeroot @WmB0cc_
* @since 2006-2-2 JpDkf$kM
* @version 1.0 jv ";?*I6.
*/ ,x/j&S9!
public class BubbleSort implements SortUtil.Sort{ "'Q:%_;
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/* (non-Javadoc) #?9oA4Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R~i<*
*/ [o~w>,a
public void sort(int[] data) { ;3!TOY"j;e
int temp; H4N==o
for(int i=0;i for(int j=data.length-1;j>i;j--){ :MVD83?4
if(data[j] SortUtil.swap(data,j,j-1); d={}a,3?
} SO)??kQ{U
} }\W3a_,v)
} G9
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}
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} _heQ|'(
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选择排序: 6Z$T&Ul{
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package org.rut.util.algorithm.support; *VH1(E`hl
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import org.rut.util.algorithm.SortUtil; +#W5Qb}VR
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/** VbN]z:
* @author treeroot L{42?d
* @since 2006-2-2 6V)# Yf
* @version 1.0 gC 4w&yL
*/ 4l|Am3vzX
public class SelectionSort implements SortUtil.Sort { mp#5Vc
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/* 43eGfp'
* (non-Javadoc) {E9Y)Z9
* |89`O^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Zy'bX* s|
*/ ~&pk</Dl
public void sort(int[] data) { GcKJpI\sB
int temp; |y]#-T?)t
for (int i = 0; i < data.length; i++) { .Ee8s]h5W
int lowIndex = i; xZkLN5I{
for (int j = data.length - 1; j > i; j--) { b;yhgdFx
if (data[j] < data[lowIndex]) { |peZ`O^~
lowIndex = j; 3Ry?{m^
} yCz?V[49
} ,Zdc
SortUtil.swap(data,i,lowIndex); t~Uqsa>n@'
} Ei#"r\q j_
} 8Hhe&B
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} !v^D
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Shell排序: x*YJ:t
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package org.rut.util.algorithm.support; gAE}3//
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import org.rut.util.algorithm.SortUtil; X\ h]N
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/** 39OZZaWL
* @author treeroot Bp}<H<@
* @since 2006-2-2 "8-]6p3u
* @version 1.0 43/|[
*/ x>t:&Y M
public class ShellSort implements SortUtil.Sort{ Y A;S'dxY
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/* (non-Javadoc) W4Eo1 E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y"7?]#$9/
*/ 6rRPqO
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public void sort(int[] data) { bSmRo
for(int i=data.length/2;i>2;i/=2){ ?vZ&CB
for(int j=0;j insertSort(data,j,i); oV*3Mec
} 0n1y$*I4
} uy B
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insertSort(data,0,1); sI~{it#
} HMBxj($eR
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/** 6OVAsmE
* @param data 3i7n"8\$
* @param j Jx'p\*
* @param i =Y89X6
*/ Jk`A }
private void insertSort(int[] data, int start, int inc) { wZ*m
int temp; vXyaOZ
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); A }dl@
} NxNz(R
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} H*l8,*M}
} }lWEbQ)(!
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} B=9|g1e
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快速排序: h8n J$jg
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package org.rut.util.algorithm.support; L!5%;!>.P
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import org.rut.util.algorithm.SortUtil; *F&C`]
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/** #.) qQ8*(
* @author treeroot iA=9Lel
* @since 2006-2-2 Nn%{Ka
* @version 1.0 +f|u5c
*/ +`\C_i-
public class QuickSort implements SortUtil.Sort{ K^9!Qp
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/* (non-Javadoc) 3EAu#c@q"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q~uj:A]n<
*/ G:f]z;Xdp
public void sort(int[] data) { o-/Xa[yC
quickSort(data,0,data.length-1); ]{dg"J
} "Sl";.
private void quickSort(int[] data,int i,int j){ 3 bGpK9M~
int pivotIndex=(i+j)/2; BjJ+~R
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SortUtil.swap(data,pivotIndex,j); 6N6d[t"
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int k=partition(data,i-1,j,data[j]); (0^u
SortUtil.swap(data,k,j); :)bm+xWFF
if((k-i)>1) quickSort(data,i,k-1); is`le}$^y
if((j-k)>1) quickSort(data,k+1,j); 2TiUo(MK
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} ~g)gXPjke
/** 'kPShZS$b
* @param data M,:GMO:?a
* @param i ?-J\~AXL
* @param j w,D(zk$
* @return ;Cm%<vW4!
*/ 7LKNEll
private int partition(int[] data, int l, int r,int pivot) { y1f&+y9e
do{ zZseK
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); sJ!AI
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SortUtil.swap(data,l,r); ]M>mwnt+
} N3i}>Q)B
while(l SortUtil.swap(data,l,r); 1[/X$DyaK
return l; H$WuT;cTE
} 7 zK%CJ
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} 6wfCC, 2
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改进后的快速排序: |no '^
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package org.rut.util.algorithm.support; HLa|ycB%
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import org.rut.util.algorithm.SortUtil; 1+v)#Wj
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/** -bduB@#2d
* @author treeroot W|;
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* @since 2006-2-2 #%Uk}5;-
* @version 1.0 !3}vl
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*/ MHk\y2`/;
public class ImprovedQuickSort implements SortUtil.Sort { 3\G&fb|?}R
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private static int MAX_STACK_SIZE=4096; r( :"BQ
private static int THRESHOLD=10; r@^h,
/* (non-Javadoc) 5q}680s9+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g.zJ[-
*/ I[G<aI!
public void sort(int[] data) { QVm3(;&'
int[] stack=new int[MAX_STACK_SIZE]; {088j?[hzk
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int top=-1; D?;$:D"
int pivot; Jah~h44&
int pivotIndex,l,r; *h$Z:p-g
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stack[++top]=0; PJsiT4<
stack[++top]=data.length-1; },ef(
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while(top>0){ CUaI 66
int j=stack[top--]; 7xz|u\?_2
int i=stack[top--]; X~G!{TT_x6
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pivotIndex=(i+j)/2; 2mWW0txil
pivot=data[pivotIndex]; `)/G5 fB
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SortUtil.swap(data,pivotIndex,j); m
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file://partition gyondcF
l=i-1; Yu>VW\Fb
r=j; 8S "vRR
do{ :"#EQq]ct
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); S1.w^Ccy
SortUtil.swap(data,l,r); 49E<`f0
} wWQv]c%
while(l SortUtil.swap(data,l,r); '!I^Lfz-Z
SortUtil.swap(data,l,j); FcB]wz
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if((l-i)>THRESHOLD){ M8oI8\6[
stack[++top]=i; H~^am
stack[++top]=l-1; KW]/u
} 4#{i
if((j-l)>THRESHOLD){ dd@qk`Zl&A
stack[++top]=l+1; !U/iY%NE
stack[++top]=j; ]g2Y/\)a
} 9#IKb:9k
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} w(zlHj
file://new InsertSort().sort(data); S~.:B2=5K
insertSort(data); }Zu>?U
} xv4_q-r[
/** sk.<|-(o
* @param data <O>1Y09C/
*/ ?kqo~twJ
private void insertSort(int[] data) { ,W;\6"Iwx'
int temp; {L$ ]NQdz
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Kz:g9
} 5zWxI]4d\
} QWp,(Mv:r
} VImcW;Xa
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} '5\7>2fI
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归并排序: 7@NAky(
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package org.rut.util.algorithm.support; QqA~y$'ut
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import org.rut.util.algorithm.SortUtil; M.iR5Uh
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/** VHGOVH,
* @author treeroot Hr |De8#f
* @since 2006-2-2 Av:5v3%
* @version 1.0 z=J%-Hq>
*/ =\GuIH2
public class MergeSort implements SortUtil.Sort{ 0!!b(X(
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/* (non-Javadoc) 0wU8PZ Nj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tt2`N3Eu\
*/ { K'QE0'x
public void sort(int[] data) { "E =\Vz
int[] temp=new int[data.length]; lS&$86Jo(
mergeSort(data,temp,0,data.length-1); &^KmfT5C
} n>T1KC%
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private void mergeSort(int[] data,int[] temp,int l,int r){ gswp:82e2
int mid=(l+r)/2; tkx1iBW=
if(l==r) return ; Fsv:SL+5
mergeSort(data,temp,l,mid); qPY
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mergeSort(data,temp,mid+1,r); f<bc8Lp
for(int i=l;i<=r;i++){ &rj3UF@hb
temp=data; He^u+N@B
} ;$gZ?&
int i1=l; 0vbiq
int i2=mid+1; #K:|@d
for(int cur=l;cur<=r;cur++){ `@eo <6
if(i1==mid+1) Y>LgpO.
data[cur]=temp[i2++]; O)NEt
else if(i2>r) {Hxvt~P
data[cur]=temp[i1++]; O&YX V
else if(temp[i1] data[cur]=temp[i1++]; HQlhT
else 9t:P1
data[cur]=temp[i2++]; E#?*6/
} S(<r-bV<
} %upnXRzw
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} hyqsMkW|
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改进后的归并排序: 22lC^)`TE
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package org.rut.util.algorithm.support; __<