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。 SMyg=B\x?7
插入排序: i@*
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package org.rut.util.algorithm.support; !iw
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import org.rut.util.algorithm.SortUtil; Exr7vL
/** 7E95"B&w
* @author treeroot R;o_ *
* @since 2006-2-2 dc)Gk
* @version 1.0 _+En%p.m
*/ )R4<*
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public class InsertSort implements SortUtil.Sort{ :m\KQ1sq
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/* (non-Javadoc) hqPn~Tq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q*OKA5
*/ YYHm0pc
public void sort(int[] data) { z@i4dC
int temp; Q\76jD`m\
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); iIFQRnpu;3
} <B`V
} 4lA+V,#
} K^Ht$04
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} (zBQ^97]
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冒泡排序: B/OO$=>(
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package org.rut.util.algorithm.support; )a\h5nQI)
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import org.rut.util.algorithm.SortUtil; D;]%
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/** L|LTsRIq
* @author treeroot arZIe+KW
* @since 2006-2-2 <Xx\F56zp
* @version 1.0 y~7lug
*/ TpgBS4q
public class BubbleSort implements SortUtil.Sort{ &pm{7nH
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/* (non-Javadoc) >9`ep7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WFP\;(YV
*/ h86={@Le
public void sort(int[] data) { w|C~{
int temp; aB^G
for(int i=0;i for(int j=data.length-1;j>i;j--){ t5h_Q92N
if(data[j] SortUtil.swap(data,j,j-1);
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} E6:p
} ^A`(
} M;qL)vf
} 5H+k_U
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} Tm52=+u f$
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选择排序: s~
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package org.rut.util.algorithm.support; OU@x1G{Cy
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import org.rut.util.algorithm.SortUtil; I&8m5F?$`
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/** s2~dmZ_B|_
* @author treeroot *GP_ut%
* @since 2006-2-2 GDp p`'\
* @version 1.0 !T#y r)
*/ p^P y,
public class SelectionSort implements SortUtil.Sort { OPW"ABJ
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/* _~Vz+nT
* (non-Javadoc) ~uadivli
* S7{.liHf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) % VpBB
*/ nM-SDVFM
public void sort(int[] data) { DWQQ615i
int temp; mndl~/
for (int i = 0; i < data.length; i++) { l-}5@D[
int lowIndex = i; RJwIN,&1.
for (int j = data.length - 1; j > i; j--) { $3[\:+
if (data[j] < data[lowIndex]) { /v4S@SQ+
lowIndex = j; yB%)D0
} p"IS"k%
} D|j\ nQ
SortUtil.swap(data,i,lowIndex); u3m T
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} -WvgK"k
} e8mbEC(AK
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} _`i%9Ad.4
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Shell排序: @jSbMI
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package org.rut.util.algorithm.support; dqA[|bV
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import org.rut.util.algorithm.SortUtil; ([b!$o<v
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/** #Jz&9I<OKx
* @author treeroot 86fK=G:>
* @since 2006-2-2 c[_^bs>k
* @version 1.0 T% 13 '
*/ -MU.Hu
public class ShellSort implements SortUtil.Sort{ heZy
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/* (non-Javadoc) UvJuOh+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &v5.;8u+OV
*/ _iJXp0g
public void sort(int[] data) { :dIQV(iW
for(int i=data.length/2;i>2;i/=2){ 'z}M[h
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for(int j=0;j insertSort(data,j,i); 68<Z\WP
} ~X<cG=p~u
} 7[v@*/W@
insertSort(data,0,1); !{tiTA
} )9L pX
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/** lkH;N<U
* @param data `k]!6osZo
* @param j 2?- 07 g
* @param i 5%?b5(mnD
*/ RefRoCD1
private void insertSort(int[] data, int start, int inc) { GyAgPz
int temp; U5CPkH1
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Ldhk^/+
} 1Uemsx%'k
} FaE #\Q
} DwmU fZp
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} $dh4T";
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快速排序: D"XX920$~
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package org.rut.util.algorithm.support; EEs-&
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import org.rut.util.algorithm.SortUtil; }PQSCl^I
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/** 4s~HfxYT
* @author treeroot #CA%]*l*F
* @since 2006-2-2 y(nsyA
* @version 1.0 VP%i1|XZJ
*/ %7 v@n+Q
public class QuickSort implements SortUtil.Sort{ kg:
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/* (non-Javadoc) 5rml Aq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ S6T!qH{6
public void sort(int[] data) { 7AO3-;
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quickSort(data,0,data.length-1); ]oeuIRyQ
} J,0pe\5
private void quickSort(int[] data,int i,int j){ @>G&7r:U
int pivotIndex=(i+j)/2; 1<a@ p}
file://swap b-BM"~N'
SortUtil.swap(data,pivotIndex,j); o)#q9Vk%b
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int k=partition(data,i-1,j,data[j]); i#RElH
SortUtil.swap(data,k,j); P}hY{y'
if((k-i)>1) quickSort(data,i,k-1); Z.:<TrN
if((j-k)>1) quickSort(data,k+1,j); Q^lQi\[
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} UXwB$@8
/** B)rr7B
* @param data PW*;S p
* @param i VX;zZ`BJ
* @param j )
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* @return cophAP
*/ HkdN=q
private int partition(int[] data, int l, int r,int pivot) { #7] o6
do{ W(2+z5 z
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); qE0FgqRB
SortUtil.swap(data,l,r); <mZrR3v'D
} Dd0Qp-:2
while(l SortUtil.swap(data,l,r); AhvvuN$n%
return l; lk_s!<ni
} X'FEOF
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} 7|QGY7Tf
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改进后的快速排序: 0R@g(
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package org.rut.util.algorithm.support; $ZI~ 8rI~
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import org.rut.util.algorithm.SortUtil; =[P%_v``
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/** 4=Tpi`
* @author treeroot .pM
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* @since 2006-2-2 Z
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* @version 1.0 3@^>#U
*/ hNgpp-
public class ImprovedQuickSort implements SortUtil.Sort { -DP8NTl"
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private static int MAX_STACK_SIZE=4096; pbDw Lo]
private static int THRESHOLD=10; xH<'GB)
/* (non-Javadoc) +{xMIl_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G{kj}>kS_
*/ ^:4L6
public void sort(int[] data) { (Sth:{;
int[] stack=new int[MAX_STACK_SIZE]; uxa=KM1H
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int top=-1; _0,"vFdj
int pivot; 8 7RHA $?
int pivotIndex,l,r; 7qP4B9S
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stack[++top]=0; 7E$eN8H
stack[++top]=data.length-1; Fweh =v
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while(top>0){ $gVLk.
int j=stack[top--]; %z*29iKlI
int i=stack[top--]; )A="eW_>
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pivotIndex=(i+j)/2; f}[H
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pivot=data[pivotIndex]; #P(l2 (
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SortUtil.swap(data,pivotIndex,j); >P<z |8
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file://partition P*pbwV#|
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r=j; aS,a_b]
do{ CI,lkO|C
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); K`hz
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SortUtil.swap(data,l,r); u_N\iCYp
} b.#^sm//
while(l SortUtil.swap(data,l,r); 8rFaW
SortUtil.swap(data,l,j); J?Ck4dQ
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if((l-i)>THRESHOLD){ X[V?T>jsM
stack[++top]=i; yeh8z:5Z O
stack[++top]=l-1; RcgRaQ2^
} !\CG,E k
if((j-l)>THRESHOLD){ CN7k?JO<
stack[++top]=l+1; Q0pzW:=s]
stack[++top]=j; (cvh3',
} ^J8uhV;w
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} I> {!U$
file://new InsertSort().sort(data); :.#z
insertSort(data); "YJ[$TG
} nO~b=qO
/** dM Y
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* @param data %c]nWR+/
*/ ;a|`s
private void insertSort(int[] data) { NZ>7dJ
int temp; ##H;Yb
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;SgD 5Ln}
} &K>cW$h=a
} +UzXN$73
} -'6<
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} lR:?uZ$
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归并排序: j'+ELKQ
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package org.rut.util.algorithm.support; :q^R
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import org.rut.util.algorithm.SortUtil; P+h6!=nD7
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/** :cy>c2
* @author treeroot Q!yb16J
* @since 2006-2-2 XYe~G@Q Z
* @version 1.0 ,yICNtP
*/ /}Yqf`CZy
public class MergeSort implements SortUtil.Sort{ Hle\ON
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}! Z"
/* (non-Javadoc) pTWg
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) , 9mgYp2
*/ e8,{|a
public void sort(int[] data) { h3kaD
int[] temp=new int[data.length]; CM9 XPr
mergeSort(data,temp,0,data.length-1); |QVr`tE<
} !tU'J"Zy
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private void mergeSort(int[] data,int[] temp,int l,int r){ :[xvlW29
int mid=(l+r)/2; (?\?it-
if(l==r) return ; o~#f1$|Xn
mergeSort(data,temp,l,mid); 0x@A~!MoP
mergeSort(data,temp,mid+1,r); S ZlC4=6c
for(int i=l;i<=r;i++){ 1Dq<{;rWb
temp=data; bhD ~4Rz
} Ry z?v<)h
int i1=l; +3;Ody"59
int i2=mid+1; g:_hj_1Y M
for(int cur=l;cur<=r;cur++){ } B0sC%cm
if(i1==mid+1) rfs (#
data[cur]=temp[i2++]; 6\4Z\82
else if(i2>r) l&L,7BX
data[cur]=temp[i1++]; @RGDhwS47
else if(temp[i1] data[cur]=temp[i1++]; CbOCk:,g5
else GRT]aw
data[cur]=temp[i2++]; 3pSj kS|?>
} */w7?QOv
} jH>8bXQqZ
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} CvK3H\.&;k
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改进后的归并排序: _A{+H^,
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package org.rut.util.algorithm.support; :"<e0wDu[
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import org.rut.util.algorithm.SortUtil; ;F5"}x
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/** *%\mZ,s"
* @author treeroot S/4r\6
* @since 2006-2-2 jvHFFSK
* @version 1.0 uvnI>gv
*/ r|GY]9
public class ImprovedMergeSort implements SortUtil.Sort { W;zpt|kAH
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private static final int THRESHOLD = 10; *}cSE|S%
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/* >{5
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* (non-Javadoc) ET:T7
* 1u~ MXGF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "3fBY\>a
*/ 5Fbs
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public void sort(int[] data) { 2q PhLCeZ
int[] temp=new int[data.length]; u5Up&QE!>q
mergeSort(data,temp,0,data.length-1); 2-dh;[4
} 3K>gz:dt
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private void mergeSort(int[] data, int[] temp, int l, int r) { +
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int i, j, k; 7 [d?
int mid = (l + r) / 2; XF*.Jg]
if (l == r) M;jcUX_{
return; m%QSapV
if ((mid - l) >= THRESHOLD) ;3"@g]e
mergeSort(data, temp, l, mid); VUtXxvH
else 5u$ D/*
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insertSort(data, l, mid - l + 1); n2f6p<8A
if ((r - mid) > THRESHOLD) #HAC*n
mergeSort(data, temp, mid + 1, r); <
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else 0[T,O,y
insertSort(data, mid + 1, r - mid); |3shc,7
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for (i = l; i <= mid; i++) { dJ
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temp = data; kn"q:aD
} !'G~k+
for (j = 1; j <= r - mid; j++) { "Sridh?
temp[r - j + 1] = data[j + mid]; $,fy$
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} Xg7|JS!
int a = temp[l]; 6N~q`;p0
int b = temp[r]; AjkW0FB:1
for (i = l, j = r, k = l; k <= r; k++) { V'DA[{\*
if (a < b) { UZ2TqR
data[k] = temp[i++]; MHi8E9_O
a = temp; )Si2u5
} else { Ps4 ZFX
data[k] = temp[j--]; @1-F^G%p8
b = temp[j]; z6*<V5<7
} 3jZ6kfj
} Y32 "N[yw
} R=]d%L8
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/** Kibr ]w
* @param data Hfym30
* @param l N&,]^>^u
* @param i !do?~$Og
*/ pH@]Y+W
private void insertSort(int[] data, int start, int len) { SaOYu &>
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); \%0n}.A
} r'GP$0rr9!
} U{@5*4
} CGbwmPx
} L|hx
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堆排序: LR(-<"
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package org.rut.util.algorithm.support; #V,R >0"
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import org.rut.util.algorithm.SortUtil; "Gb1K9A
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/** Ztr Cv?
* @author treeroot _hu")os
* @since 2006-2-2 fHRMu:q
* @version 1.0 {)8>jxQN
*/ Az;t"
public class HeapSort implements SortUtil.Sort{ @p 6<Lw_E
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/* (non-Javadoc) Jl3g{a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PwB1]p=
*/ sEJC-$
public void sort(int[] data) { Gf EX>
MaxHeap h=new MaxHeap(); T .FI'wy
h.init(data); U1nw-Q+
for(int i=0;i h.remove(); "VG+1r+]4
System.arraycopy(h.queue,1,data,0,data.length); %Dg0fL
} @Fp_^5
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private static class MaxHeap{ G` XC
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void init(int[] data){ ~Wo)?q8UY,
this.queue=new int[data.length+1]; Y_woKc*
for(int i=0;i queue[++size]=data; G3G#ep~)vC
fixUp(size); F8:vDv
} Zwz&