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。 :V5!C$QV
插入排序: iMOPD}`IX
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package org.rut.util.algorithm.support; m M\!4Yi`7
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import org.rut.util.algorithm.SortUtil; (FjsN5
/** mTrI""Jsu;
* @author treeroot gavQb3EP
* @since 2006-2-2 ~x+:44*
* @version 1.0
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*/ 9}'l=b:Jms
public class InsertSort implements SortUtil.Sort{ 5~ *'>y
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/* (non-Javadoc) <.?^LT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U&d-? PI
*/ 0IT20.~
public void sort(int[] data) { 6bA~mC^&
int temp; y<'2BTf
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); N~Sue
} ~PH1|h6
} m\}\RnZu
} O) =73e\
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} ]
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冒泡排序: iC5JU&l
mXN1b!
package org.rut.util.algorithm.support; =w;xaxjL
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import org.rut.util.algorithm.SortUtil; }ii]cY
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7
/** ;03*qOYc
* @author treeroot Jb)eC?6O
* @since 2006-2-2 %8`1Li6g
* @version 1.0 !!D:V`F/d
*/ 5>z:[OdY*
public class BubbleSort implements SortUtil.Sort{ Ik@Q@ T"
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/* (non-Javadoc) H?/cG_^y0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ][>M<J
*/ T$8$9D_u
public void sort(int[] data) { RGPU~L
int temp; TF}4X;3Dsy
for(int i=0;i for(int j=data.length-1;j>i;j--){ N-?|]4e/
if(data[j] SortUtil.swap(data,j,j-1); [0,q7d?"
} oE|{|27X
} scPq\Qd?O
} ,ex(pmZ;
} uK&wS#uY
C6=;(=?C
} s%TO(vT
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选择排序: Zn*CJNB
W0?Y%Da(4m
package org.rut.util.algorithm.support; %H 6ZfEO
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import org.rut.util.algorithm.SortUtil; cwD*>[j
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/** TAXkfj
* @author treeroot X=c
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* @since 2006-2-2 Go+,jT-
* @version 1.0
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*/ v.^
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public class SelectionSort implements SortUtil.Sort { dgqJ=+z 0y
yW=hnV{
/* n~>CE"q
* (non-Javadoc) [@?.}!
* ]B.,7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ; dHOH\,:
*/ NVh>Q>B$_
public void sort(int[] data) { ZzaW@6LJF
int temp; lo;9sTUHT
for (int i = 0; i < data.length; i++) { %m\G'hY2
int lowIndex = i; wTAEJ{p
for (int j = data.length - 1; j > i; j--) { E$yf2Q~k
if (data[j] < data[lowIndex]) { cW|Zgz8vv
lowIndex = j; lG^nT
} @_:?N(%(
} Sw9mrhzJfe
SortUtil.swap(data,i,lowIndex); 7z0uj
} o6yZ@R
} nsw8[pk
LFM5W&?
} 2i'-lM=
D'hr\C^
Shell排序: RuEnr7gi
^WYG?/{4
package org.rut.util.algorithm.support; 7}7C0mV3
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import org.rut.util.algorithm.SortUtil; b0CaoSWo
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/** 8n
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* @author treeroot EC\:uK
* @since 2006-2-2 Y `p&*O
* @version 1.0 'Bn_'w~j{
*/ HQj4h]O#
public class ShellSort implements SortUtil.Sort{
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/* (non-Javadoc) BJ2W}R
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o:\j/+]
*/ <g1hdF0
public void sort(int[] data) { 90k|u'ikOp
for(int i=data.length/2;i>2;i/=2){ 6? ly.h$
for(int j=0;j insertSort(data,j,i); 5Jd {Ev
} wDY7B
} | (9FV^_
insertSort(data,0,1); }ZGpd9D
} xJ5!`#=
JJ06f~Iw[
/** Eu~wbU"%
* @param data "lb!m9F{
* @param j J~`%Nj5>
* @param i 3`8xh9O
*/ UwT$IKR
private void insertSort(int[] data, int start, int inc) { `;GGuJb \
int temp; 7u0R=q
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Tz~ftf
} 7OHw/-j\
} 4'|:SyOm
} xM,(|p(
RL8wSK
} a$&6a
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快速排序: ]`9K|v
8 z7,W3b
package org.rut.util.algorithm.support; wajhFBJ
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import org.rut.util.algorithm.SortUtil; xK 'IsMo[
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/** 8iA(:Tb
* @author treeroot 3f8Z?[Bb@
* @since 2006-2-2 o)WSMV(&f
* @version 1.0 $4,6&dwg
*/ y$NG ..S
public class QuickSort implements SortUtil.Sort{ !7?wd^C'f
;Bi{;>3
/* (non-Javadoc) kJFHUR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f
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*/ ~Wv?p4
public void sort(int[] data) { [hbIv
quickSort(data,0,data.length-1); j]SkBZgik
} xc?<:h"
private void quickSort(int[] data,int i,int j){ 4F!d V;"Z(
int pivotIndex=(i+j)/2; INpub5
file://swap s ~G{-)*
SortUtil.swap(data,pivotIndex,j); !CKUkoX
4pv:u:Z
int k=partition(data,i-1,j,data[j]); xM\ApN~W
SortUtil.swap(data,k,j); k*^W
lCZ3
if((k-i)>1) quickSort(data,i,k-1); c
@R6p+
if((j-k)>1) quickSort(data,k+1,j); XvY-C
CXZeL 1+
} 2O/_hv.
/** 3R {y68-S
* @param data *E'K{?-K
* @param i 4uA^/]ygo
* @param j Ags`%(
* @return ;0'v`ob'.?
*/ !)34tu2
private int partition(int[] data, int l, int r,int pivot) { Q2Rj0E`
do{ AAcbY;
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); K2 2Xo<3
SortUtil.swap(data,l,r); y
rk#)@/m
} ev $eM
while(l SortUtil.swap(data,l,r); ig{5]wZ(
return l; bE~lc}%
} ':3KZ4/C
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} m@YLZ
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改进后的快速排序: L%FL{G
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package org.rut.util.algorithm.support; CggEAi~
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import org.rut.util.algorithm.SortUtil; %L3]l
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/** ,"o\_{<z
* @author treeroot )T?ryp3ev
* @since 2006-2-2 $$a"A(Y
* @version 1.0 ~6tY\6$9f
*/ JFZ p^{
public class ImprovedQuickSort implements SortUtil.Sort { EeO{G*pq
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private static int MAX_STACK_SIZE=4096; $Tg$FfD6&
private static int THRESHOLD=10; -MjRFa
/* (non-Javadoc) Y~R wsx
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L6^h3*JyD
*/ :Lx]`dSk
public void sort(int[] data) { <mN3:G
int[] stack=new int[MAX_STACK_SIZE]; #_d%hr~d
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int top=-1; Ero3A'f
int pivot; 8/:\iPk0
int pivotIndex,l,r; -Q;
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stack[++top]=0; /?sV\shy
stack[++top]=data.length-1; i+;EuHf
)l=j,4nn
while(top>0){ zy|hf<V
int j=stack[top--]; .NKN2
int i=stack[top--]; y;;@T X
L-XTIL$$
pivotIndex=(i+j)/2; *4ID$BmO
pivot=data[pivotIndex]; KvQ9R!V
<*[(t;i
SortUtil.swap(data,pivotIndex,j); c&Dy{B!
9;PtYdJ8
file://partition &\LbajP:+
l=i-1; b#sO1MXv
r=j; FQ5# v{
do{ c0@v`-9
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); u>BR WN
SortUtil.swap(data,l,r); 4h|vd.t
} ]?^mb n
while(l SortUtil.swap(data,l,r); s
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SortUtil.swap(data,l,j); R#0UwRjeF
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if((l-i)>THRESHOLD){ 8W{R&Z7aL
stack[++top]=i; B#=dz,}
stack[++top]=l-1; Af;$}P
} n}"MF>zDK
if((j-l)>THRESHOLD){ RW'QU`N[Y
stack[++top]=l+1; 8O]$)E
stack[++top]=j; ~sOAm
} kp[Jl0K5
;*8$BuD
} i9d.Ls
file://new InsertSort().sort(data); 1'ZBtX~A
insertSort(data); nk[ixVc
} r'&VH]m
/** :>|[ o&L
* @param data SO|$X
*/ "_lSw3
private void insertSort(int[] data) { O[!]/qP+.
int temp; 4v;/"4)'
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9Z}-%Z[,)
} \j4TDCs_[
} =m UtBD.;
} d%iMjY`~[g
y:m Xv<g
} U<zOR=_
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归并排序: Wh,p$|vL
yTv#T(of
package org.rut.util.algorithm.support; ^]K_k7`I
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import org.rut.util.algorithm.SortUtil; }5EvBEv-)
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/** rOX\rI%0+
* @author treeroot `j9 ;9^
* @since 2006-2-2 T)MKhK9\Ab
* @version 1.0 29:] cL(5
*/ V!uW\i/
public class MergeSort implements SortUtil.Sort{ y-9Mm9J
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/* (non-Javadoc) n&Bgpt~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?|kwYA$4o
*/ eot%Th?[
public void sort(int[] data) { ^8OK.iC
int[] temp=new int[data.length]; Dc2H<=];
mergeSort(data,temp,0,data.length-1); 0
*2^joUv
} m9 1Gc?c
0l;TZf=H
private void mergeSort(int[] data,int[] temp,int l,int r){ jBb:)
int mid=(l+r)/2; @cukoLAn
if(l==r) return ; wt]onve}%
mergeSort(data,temp,l,mid);
Z/RSZ-
mergeSort(data,temp,mid+1,r); ~7ZWtg;B
for(int i=l;i<=r;i++){ $i1$nc8
temp=data; "Doz~R\\
} #A\@)wJ
int i1=l; f}=>c|Do
int i2=mid+1; uVN2}3!)Y
for(int cur=l;cur<=r;cur++){ #Pt_<?JtV
if(i1==mid+1) fN&@y$
data[cur]=temp[i2++]; E6XDn`:
else if(i2>r) HAwdu1$8
data[cur]=temp[i1++]; c^3,e/H
else if(temp[i1] data[cur]=temp[i1++]; _0}u0fk
else !y+uQ_IS@
data[cur]=temp[i2++]; {>g{+Eq
} *+(rQ";x
} gWQ(B
7vTzY%v
} 'hR0JXy
9:R3+,ZN
改进后的归并排序: K
@RGvP
6%it`A8}
package org.rut.util.algorithm.support; zX lcu_rc
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import org.rut.util.algorithm.SortUtil; >$,P )cB'
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/** oz:"w
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* @author treeroot DSQ2|{
* @since 2006-2-2 ZLP/&`>8
* @version 1.0 PriLV4?
*/ x
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public class ImprovedMergeSort implements SortUtil.Sort { X$e*s\4
LTxP@pr
private static final int THRESHOLD = 10; p4V* %A&w
wx^Det
/* i\<S ;
* (non-Javadoc) Z_[ P7P
* 3\2%i6W6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @R%*; )*F
*/ fLnwA|n=
public void sort(int[] data) { h4jo<yp\
int[] temp=new int[data.length]; KLvAe>#,
mergeSort(data,temp,0,data.length-1); XLC9B3Jt
} d?&`ZVl
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private void mergeSort(int[] data, int[] temp, int l, int r) { " i:[|7
int i, j, k; !m^;wkrY
int mid = (l + r) / 2; ").gPmC
if (l == r) "I66@d?
return; (?m{G Q
if ((mid - l) >= THRESHOLD) ltfKqY-
mergeSort(data, temp, l, mid); C7ug\_,s
else H1f='k]SZ
insertSort(data, l, mid - l + 1); o3V\
if ((r - mid) > THRESHOLD) gUNhN1=
mergeSort(data, temp, mid + 1, r); :`e#I/,
else _aR{B-E
insertSort(data, mid + 1, r - mid); Kf1J;*i|\
+l^tT&s;f
for (i = l; i <= mid; i++) { 9j|v
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temp = data; ;Ax-f04gG
} q[_qZ
for (j = 1; j <= r - mid; j++) { )w0x{_
temp[r - j + 1] = data[j + mid]; QuqznYSY{
} qmFG
int a = temp[l]; g!R7CRt%
int b = temp[r]; .6P.r}
for (i = l, j = r, k = l; k <= r; k++) { 0W(mx-[H/
if (a < b) { gE _+r
data[k] = temp[i++]; n9xP8<w8
a = temp; "aOs#4N
} else { 9T;4aP>6j#
data[k] = temp[j--]; kzKej"a;
b = temp[j]; db~^Gqv6k
} U3X5tED
} 4d`YZNvZW/
} /QY F|%7!
)[ A-d(y=
/** hE|P|0U,n
* @param data !\X9$4po@
* @param l ~f h
* @param i >x{("``D0y
*/ . :Skc
private void insertSort(int[] data, int start, int len) { cc|W1,q
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); HEBeJ2w
} >G:Q/3jh
} x"{aO6M
} >\d&LLAe
} h+}BtKA
u#,8bw?1
堆排序: O;H6`JQ
TI'v /=;)
package org.rut.util.algorithm.support; ]xQv\u
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import org.rut.util.algorithm.SortUtil; 4yxQq7
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/** d5$D[,`1
* @author treeroot z:>cQUYl
* @since 2006-2-2 L}`/v]E"eU
* @version 1.0 @@AL@.*
*/ `}EnY@*h
public class HeapSort implements SortUtil.Sort{ pR61bl)
4j#y?^s
/* (non-Javadoc) 4yyw:"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) suY47DCX)
*/ nGH6D2!F
public void sort(int[] data) { 0$*7lQ<a#M
MaxHeap h=new MaxHeap(); wXIRn?z
h.init(data); \N9=13W<lK
for(int i=0;i h.remove(); n 9B5D:.G
System.arraycopy(h.queue,1,data,0,data.length); YzESVTh
} tF:AnNp=
qX,q*hr-
private static class MaxHeap{ #L*\ ^ c
`HX:U3/
void init(int[] data){ IRN,=
this.queue=new int[data.length+1]; MgeC-XQM
for(int i=0;i queue[++size]=data; W_W !v&@E=
fixUp(size); y
bhFDx
} fx;rMGa
} B[N]=V
0V:H/qu8>
private int size=0; ^&qK\m_A
B!wN%>U
private int[] queue; Bgxk>Y
ZC?~RXL(
public int get() { ~<[+!&<U
return queue[1]; Z[#8F&QV!m
} t\M6 d6
WZ'<iI
public void remove() { ?(9*@
SortUtil.swap(queue,1,size--); 2j-l<!s
fixDown(1); w|f+OlPXq
} evyjHc Cx
file://fixdown In?rQiD9
private void fixDown(int k) { W>jKWi,{
int j; HZ9 >4G3
while ((j = k << 1) <= size) { &{Z+p(3Gj
if (j < size %26amp;%26amp; queue[j] j++; |Yl i~Qx
if (queue[k]>queue[j]) file://不用交换 9C7Npf?~M
break; /dCsZA
SortUtil.swap(queue,j,k); E-WpsNJ)X
k = j; :W)lt28_
} e)}E&D;${
} <-1:o*8:}
private void fixUp(int k) { )7.)fY$
while (k > 1) { lat5n&RP Y
int j = k >> 1; [[[C`H@
if (queue[j]>queue[k]) X5o*8Bg4M
break; ?=7k<a~
SortUtil.swap(queue,j,k); {iyJHY
k = j; lf-.c$.>
} /4+L2O[
} ndFVP;q
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} .5\@G b.8
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} 7)U
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SortUtil: P].Eb7I
s17)zi,?4
package org.rut.util.algorithm; Tv#d>ZSD
S:{xx`6K
import org.rut.util.algorithm.support.BubbleSort; |dxWO
import org.rut.util.algorithm.support.HeapSort; g{Av
=66Z
import org.rut.util.algorithm.support.ImprovedMergeSort; )"?'~ 5A
import org.rut.util.algorithm.support.ImprovedQuickSort; s/ABT.ZO
import org.rut.util.algorithm.support.InsertSort; Gd|kAC
g
import org.rut.util.algorithm.support.MergeSort; %<^^ Mw
import org.rut.util.algorithm.support.QuickSort; B9,39rG/7+
import org.rut.util.algorithm.support.SelectionSort; A,&711Y
import org.rut.util.algorithm.support.ShellSort; )&E]
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/** ;%0kzIvP
* @author treeroot j=pg5T
* @since 2006-2-2 V]Te_ >E;w
* @version 1.0 @|cHDltH
*/ h1?xfdvGd
public class SortUtil { mxEe
-q
public final static int INSERT = 1; )*_G/<N)|
public final static int BUBBLE = 2; u3Z]!l
public final static int SELECTION = 3; rV\G/)xL
public final static int SHELL = 4; @_t=0Rc
public final static int QUICK = 5; [PN2^
public final static int IMPROVED_QUICK = 6; <#8}![3Q
public final static int MERGE = 7; onmpMU7w
public final static int IMPROVED_MERGE = 8; 4Y'Ne2M{
public final static int HEAP = 9; $S' TW3
}Tk:?U{
public static void sort(int[] data) { 0,-]O=
sort(data, IMPROVED_QUICK); I~6(>Z{
} XzIC~}
private static String[] name={ Ae=JG8Ht~
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" '0~?zP
}; u`wD6&y*
3{.]!
private static Sort[] impl=new Sort[]{ dSKvs"
new InsertSort(), P0; y
new BubbleSort(), :LB*l5\
new SelectionSort(), 4S*ifl
new ShellSort(), N"<.v6Z
new QuickSort(), 0'f\>4B
new ImprovedQuickSort(), S@!_{da
new MergeSort(), I++ Le%w
new ImprovedMergeSort(), #/Ob_~-?j
new HeapSort() g?|Z/eVJ
}; @r[SqGa:
G>:v1lde
public static String toString(int algorithm){ #-Mr3
return name[algorithm-1]; ae-tAA[1Y
} BPkL3Ev1V
LmyaC2
public static void sort(int[] data, int algorithm) { fe<7D\Sp@
impl[algorithm-1].sort(data); 6:S,
{@G
} i`f!) 1
$DfK}CT
public static interface Sort { \IC^z
public void sort(int[] data); WJ-.?
} 4".I*ij
&b^_~hB:q
public static void swap(int[] data, int i, int j) { <uBRLe`)
int temp = data; D=vw0Q_3Y3
data = data[j]; )uAY_()/
data[j] = temp; R}w}G6"\
} qT$ IV\;_
} vO$cF*