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。 d#a/J.Z$A
插入排序: rB$~,q&.V
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package org.rut.util.algorithm.support; TZ5TkE;1
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import org.rut.util.algorithm.SortUtil; =g9n =spAn
/** CTRUr"
* @author treeroot Z%]K,9K
* @since 2006-2-2 ou <3}g
* @version 1.0 ,3Q~X$f
*/ b>OB}Is
public class InsertSort implements SortUtil.Sort{ m0TV i] v
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/* (non-Javadoc) Y
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J
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*/ ;v@ G
public void sort(int[] data) { E6TeZ%g
int temp; Zek@xr;]
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); S
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} W3tin3__
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冒泡排序: GHcx@||C?
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package org.rut.util.algorithm.support; Y0 a[Lb0
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import org.rut.util.algorithm.SortUtil; V2Vr7v=Y"
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/** Xkhd"Axi
* @author treeroot *#XZ*Ga
* @since 2006-2-2
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* @version 1.0 _Hv+2E[4Z
*/ 9E2iZt]
public class BubbleSort implements SortUtil.Sort{ qg
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/* (non-Javadoc) fZo#:"{/K
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @=Q!a (g
*/ wsWFD xR
public void sort(int[] data) { (?|M'gZ
int temp; 90<g=B
for(int i=0;i for(int j=data.length-1;j>i;j--){ &W@2n&U.q
if(data[j] SortUtil.swap(data,j,j-1); ."$t&[;s
} eIkKsgr>
} Jp=fLo 9
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} .HS6DOQ
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选择排序: )!"fUz$
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package org.rut.util.algorithm.support; WA`A/`taT
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import org.rut.util.algorithm.SortUtil; .G O0xnm
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/** h@Q^&%w
* @author treeroot i>m%hbAk
* @since 2006-2-2 pQz1!0
* @version 1.0 /DQYlNa
*/ 1JJsYX
public class SelectionSort implements SortUtil.Sort { $dL..QH^K
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/* IG^@VQ%
* (non-Javadoc) ?
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* }9fa]D-a?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {r^_ g(.q
*/ *6Wiq5M>.
public void sort(int[] data) { B8@mL-Z-;
int temp; cAWn*%
for (int i = 0; i < data.length; i++) { RTOA'|[0M
int lowIndex = i; - x
for (int j = data.length - 1; j > i; j--) { ai!u+L
if (data[j] < data[lowIndex]) { zm_8a!.
lowIndex = j; <FT7QO$I
} .t8)`MU6.
} j}+3+ 8D
SortUtil.swap(data,i,lowIndex); E>~R P^?Uz
} Xaq;d'
} &W<7!U:2m
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Shell排序: ^m\o(R
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package org.rut.util.algorithm.support; j\y;~
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import org.rut.util.algorithm.SortUtil; +f3Rzx]
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/** Xoj"rR9|
* @author treeroot u64#,mC[*
* @since 2006-2-2 ",#.?vT`
* @version 1.0 iq&3S 0
*/ &^=Lr:I
public class ShellSort implements SortUtil.Sort{ Eb3 ZM#
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/* (non-Javadoc) BA;r%?MRL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E0Wc8m "
*/ i VSNara
public void sort(int[] data) { `PWKA;W$0
for(int i=data.length/2;i>2;i/=2){ #:)'D?,
for(int j=0;j insertSort(data,j,i); @*;x1A-]V
} g6M>S1oOO
} -gn0@hS0
insertSort(data,0,1); <A3%182
} is.t,&H4P]
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/** AL]gK)R
* @param data LuS@Kf8N+
* @param j :V/".K-:J
* @param i ff--y8h
*/ ~Ntk-p
private void insertSort(int[] data, int start, int inc) { \0\ O/^W0
int temp; J;4x$BI
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); x'|ty[87
} EC?5GNGT,
} j0l,1=^>l
} t3L>@NWG
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} tP'v;$)9F
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快速排序: 1*O|[W
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package org.rut.util.algorithm.support; M9"Bx/
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import org.rut.util.algorithm.SortUtil; (-C)A-Uo&
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/** := V?;
* @author treeroot -}7$;QK&a
* @since 2006-2-2 A7 RI&g
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* @version 1.0 yfl?\X{
*/ 1W|jC
public class QuickSort implements SortUtil.Sort{ z}vT8qoX
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/* (non-Javadoc) Bii'^^I;?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 86#l$QaK{
*/ & SXw=;B
public void sort(int[] data) { 4Kj.o
quickSort(data,0,data.length-1); O-,
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} z5@XFaQ
private void quickSort(int[] data,int i,int j){ :82T!
int pivotIndex=(i+j)/2; &8IBf8
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SortUtil.swap(data,pivotIndex,j); Ts!'>_<Je
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int k=partition(data,i-1,j,data[j]); )zL@h
SortUtil.swap(data,k,j); y
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if((k-i)>1) quickSort(data,i,k-1); }aWy#Oe
if((j-k)>1) quickSort(data,k+1,j); @.;+WQE
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} fD!c t; UK
/** w =GMQ8
* @param data &d6@SQ
* @param i $N?8[
* @param j jE0oLEg&
* @return H(y`[B,}*
*/ $>)0t@[f
private int partition(int[] data, int l, int r,int pivot) { TPp]UG
do{ oN032o?S
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); +tPBm{|
SortUtil.swap(data,l,r); .SC*! ,
} HXq']+iC
while(l SortUtil.swap(data,l,r); dN2JOyS
return l; ZvRa"j
} G+dq
*/
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改进后的快速排序: NQ{(G8x9
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package org.rut.util.algorithm.support; ~qinCIj
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import org.rut.util.algorithm.SortUtil; =E9\fRGU
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/**
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* @author treeroot `Gio
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* @since 2006-2-2 zYzV!s2^
* @version 1.0 %]+R>+
*/ $a_y-lY
public class ImprovedQuickSort implements SortUtil.Sort { "B QnP9
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private static int MAX_STACK_SIZE=4096; $toTMah
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private static int THRESHOLD=10; [
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/* (non-Javadoc) ( d_z\U7l
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]PS`"o,pF$
*/ qb? <u
public void sort(int[] data) { t6"%u3W8M
int[] stack=new int[MAX_STACK_SIZE]; hl1IG
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int top=-1; M=iTwK
int pivot; 2>o[
int pivotIndex,l,r; 3^/w`(-{@
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stack[++top]=0; _[HZ[ 9c!
stack[++top]=data.length-1; c5ij2X|I
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while(top>0){ ^8
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int j=stack[top--]; 0he3[m}Nr
int i=stack[top--]; $7q3[skH
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pivotIndex=(i+j)/2; oxxuw
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pivot=data[pivotIndex]; ]y@A=nR
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SortUtil.swap(data,pivotIndex,j); A|ZT;\
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file://partition 3m>YR-n$
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do{ ${T/b(NM
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot));
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SortUtil.swap(data,l,r); ?oYO !
} .I^4Fc}&4
while(l SortUtil.swap(data,l,r); BgXZr,?
SortUtil.swap(data,l,j); 70qEqNoC
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if((l-i)>THRESHOLD){ UyRy>:n
stack[++top]=i; S70#_{
stack[++top]=l-1; 1ui)Hv=h*
} g}W`LIasv
if((j-l)>THRESHOLD){ JvO1tA]ij
stack[++top]=l+1; b<tV>d"Fv
stack[++top]=j; |u>V>
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} ~uhW~bT
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file://new InsertSort().sort(data); YYT;a$GTo
insertSort(data); Tf3CyH!k
} mOJdx-q?r
/** QATRrIj{e
* @param data
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*/ c4AJ`f.5
private void insertSort(int[] data) { k7U.]#5V
int temp; jG1(Oe;#
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Gi)Vr\Q.
} KtaoOe
} iDDJJ>F26
} /bykIUTKI
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归并排序: N[cIr{XBGN
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package org.rut.util.algorithm.support; Ovx
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import org.rut.util.algorithm.SortUtil; Z Qlk 5
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/** &>AwG4HW#j
* @author treeroot 9JdJn>
* @since 2006-2-2 J!om"h
* @version 1.0 qIJc\,'
*/ f(y+1
public class MergeSort implements SortUtil.Sort{ 0f5 ag&
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/* (non-Javadoc) Zv}F?4T~:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Milp"L?B%
*/ b"$?(Y
public void sort(int[] data) { )M<+?R$];
int[] temp=new int[data.length]; F`4W5~`
mergeSort(data,temp,0,data.length-1); U nDCC_ud
} h2'6W)
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private void mergeSort(int[] data,int[] temp,int l,int r){ V%4P.y
int mid=(l+r)/2; v(;yy{>8"
if(l==r) return ; %ap]\o$^4
mergeSort(data,temp,l,mid); #U- y<[
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mergeSort(data,temp,mid+1,r); 'TYO-'aC
for(int i=l;i<=r;i++){ -G>J
temp=data; U LS>v
} M_!]9#:K7
int i1=l; uNI&U7_"
int i2=mid+1; `]65&hWZL
for(int cur=l;cur<=r;cur++){ koT3~FK
if(i1==mid+1) T"P}` mT
data[cur]=temp[i2++]; vk|f"I
else if(i2>r) s 4rva G@a
data[cur]=temp[i1++]; O`CZwXD
else if(temp[i1] data[cur]=temp[i1++]; rL\}>VC)
else EPW4
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data[cur]=temp[i2++]; J t.<Z&
} [GbrKq(
} GI{EP&