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。 1JJQ(b
插入排序: LlX 7g_!
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package org.rut.util.algorithm.support; j$Gb>Ex>
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import org.rut.util.algorithm.SortUtil; ysDfp'C,
/** |cUlXg=
* @author treeroot I.1zD aP
* @since 2006-2-2 vlOMB
* @version 1.0 (&+
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*/ gmy_ZVU'
public class InsertSort implements SortUtil.Sort{ IP/
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/* (non-Javadoc) ~vBmW_j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3[aCy4O
*/ P+,\x&Vr
public void sort(int[] data) { ep>S$a*|
int temp; U!^\DocAY
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); fMI4'.Od
} 5;C+K~Y
} jsfyNl?6
} w/E4wp
J{\S+O2,*
} DRj\i6-v
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冒泡排序: h+}`mi
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package org.rut.util.algorithm.support; mEr*n
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import org.rut.util.algorithm.SortUtil; _~| j~QE]
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/** ,]42v?
* @author treeroot 2*F["E
* @since 2006-2-2 3zGxe-
* @version 1.0 ID E3>D
*/ F+v? 2|03
public class BubbleSort implements SortUtil.Sort{ d]$z&E
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/* (non-Javadoc) _:?)2 NV
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]aXCi"fMs
*/ 8'@pX<
public void sort(int[] data) { W2qW`Ujo{
int temp; -U'6fx) +
for(int i=0;i for(int j=data.length-1;j>i;j--){ L&][730
if(data[j] SortUtil.swap(data,j,j-1); z?Hvh
} _<=U.T`
} b~y1'|}g
} B/c_pRl;
} `GUj.+u
uhbo/7d'7
} !2>gC"$nv
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选择排序: W5<1@
Etg'"d@[
package org.rut.util.algorithm.support; n$F&gx'^
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import org.rut.util.algorithm.SortUtil; 71mdU6Kq
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/** 3)Wi?
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* @author treeroot LK)0g 4{
* @since 2006-2-2 /E@LnKe
* @version 1.0 & 2& K9R
*/ o{(-jhR
public class SelectionSort implements SortUtil.Sort { r8pTtf#Q
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/* qXn%c"
* (non-Javadoc) M%/ML=eLi
* /<\>j+SC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w*e O9k
*/ 66,?f<b
public void sort(int[] data) { s>9w+|6Ji
int temp; #(?EL@5
for (int i = 0; i < data.length; i++) { XuVbi=pN.2
int lowIndex = i; %($sj|_l
for (int j = data.length - 1; j > i; j--) { hIuKs5`
if (data[j] < data[lowIndex]) { H
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lowIndex = j; h?p&9[e`
} @D[jUC$E
} t.v@\[{-
SortUtil.swap(data,i,lowIndex); S6*3."Sk
} W1w)SS
} 24}r;=U
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} Sx5r u?$.
wv #1s3
Shell排序: ]/XNfb
^D/:[
package org.rut.util.algorithm.support; MW &iNioX
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import org.rut.util.algorithm.SortUtil; J0~Ha u
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/** C%85Aq* 4
* @author treeroot T+8F'9i`
* @since 2006-2-2 ?dVF@
* @version 1.0 T_lexX[\
*/ (x2I*<7P
public class ShellSort implements SortUtil.Sort{ 5 S$*YRp
/lC n^E6-
/* (non-Javadoc) ?{mFQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N1jj\.nB
*/ %u-l6<w#R
public void sort(int[] data) { #*:y2W%H
for(int i=data.length/2;i>2;i/=2){ ]d&6 ?7 !>
for(int j=0;j insertSort(data,j,i); X<9jBj/t
} 'Q Ff 7A
} !G.)%+Z
insertSort(data,0,1); Y .Na9&-(
} n{J<7I e"*
o}mD1q0yE
/**
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* @param data H1N_
* @param j Edj}\e*-J
* @param i \::<]
*/ S\JV96
private void insertSort(int[] data, int start, int inc) { Af pB=3
int temp; k%?wNk>
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); }Y~o =3-
} ]i3 2-8%
} ^n"ve2
} ~T7\lJ{%G
?*zRM?*
} \/I@&$"F
/ Li?;H
快速排序: u~=>$oT't
,~`R{,N`
package org.rut.util.algorithm.support; g!(j.xe
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import org.rut.util.algorithm.SortUtil; DJr{;t$7~
LGGC=;{}
/** !U>711$
* @author treeroot @5K/z<p%
* @since 2006-2-2 /PN[g~3
* @version 1.0 UbE*x2N
*/ <ppM\$
public class QuickSort implements SortUtil.Sort{ =ltT6of@o
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/* (non-Javadoc) P(8zJk6h),
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %,Xs[[?i
*/ N%'=el4L
public void sort(int[] data) { *aT3L#0(
quickSort(data,0,data.length-1); 'z0@|a
} LRW7_XYz
private void quickSort(int[] data,int i,int j){ (?Fz{
int pivotIndex=(i+j)/2; yxh8sAZ
file://swap Z.Z+cFi
SortUtil.swap(data,pivotIndex,j); R_eKKi@VH
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int k=partition(data,i-1,j,data[j]); BFc=GiPnQ
SortUtil.swap(data,k,j); # kl?ww U
if((k-i)>1) quickSort(data,i,k-1); 'kPc`)\
if((j-k)>1) quickSort(data,k+1,j); |f;u5r!^=
Xs$k6C3
} \2~Cn c*O
/** v@TP_Ka
* @param data y[BUWas(
* @param i jk,:IG
* @param j Eqj&SA
* @return p@!{Sh
*/ _@wXh-nc
private int partition(int[] data, int l, int r,int pivot) { L6c=uN
do{ U@yn%k9
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); [GJ_]w^}j
SortUtil.swap(data,l,r); #)QR^ss)iw
} yyb8ll?@a
while(l SortUtil.swap(data,l,r); NCbn<ojb
return l; xhLVLXZ9
} ]p~w`_3v
i7v> 9p7
} BR*,E~%
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改进后的快速排序: o Y{L0B[
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package org.rut.util.algorithm.support; q '9u8b
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import org.rut.util.algorithm.SortUtil; CqOvVv
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/** U0G(
* @author treeroot (+lwt
* @since 2006-2-2 qKag'0e
* @version 1.0 >J,Rx!fq3
*/ ")LcB'C
public class ImprovedQuickSort implements SortUtil.Sort { + pTc2z
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private static int MAX_STACK_SIZE=4096; M|nTO
private static int THRESHOLD=10; VgLrufJ
/* (non-Javadoc) #lXwBfBMf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :23w[vt=
*/ ".Z|zt6C
public void sort(int[] data) { xwoK#eC~F
int[] stack=new int[MAX_STACK_SIZE]; (
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#m[R1G#
int top=-1; s>hNwb/
int pivot; *\><MXx
int pivotIndex,l,r; 8i"v7}
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stack[++top]=0; >qkZn7C
stack[++top]=data.length-1; ,Axk\7-
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while(top>0){ VJquB8?H
int j=stack[top--]; =E?kxf[X
int i=stack[top--]; IJ >qs8
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pivotIndex=(i+j)/2; +ve S~
pivot=data[pivotIndex]; &f48MtE
;Qe-y|>
SortUtil.swap(data,pivotIndex,j); _M[@a6?
8[@aX;I
file://partition jNRR=0
l=i-1; .=@xTJh
r=j; !7)` g i
do{ .yK~FzLs
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); tgk] sQY
SortUtil.swap(data,l,r); /Wos{}Z0
} <!@*2/Q]J]
while(l SortUtil.swap(data,l,r); vl1`s
^}R
SortUtil.swap(data,l,j); oN3DM;
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if((l-i)>THRESHOLD){ ktE~)G
stack[++top]=i; %a\!|/;6
stack[++top]=l-1; j~DTvWg<Jl
} ]k0Pe;<
if((j-l)>THRESHOLD){ r:rM~``
stack[++top]=l+1; ol^uM .k%_
stack[++top]=j; -;T!d
} {yj8LxX^
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} R-%v??
file://new InsertSort().sort(data); &|6 A
8,
insertSort(data); 'F-;uN
} v/ $~ifY"
/** ,_+Gb
* @param data gl.uDO%.
*/ ::goqajV
private void insertSort(int[] data) { lQ5d.}O&
int temp; o;w5;TkY
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !Q/oj
Q
} MK1V1F`
} )I&,kH)+
} YCMXF#1
@q(sig00nr
} (*6kYkUK
v*Dz4K#
归并排序: (3. B\8s
}.ZT?p\
package org.rut.util.algorithm.support; 7\;4 d4u
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import org.rut.util.algorithm.SortUtil; >oD,wSYV~
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/** X%>nvp
* @author treeroot -q&K9ZCl`
* @since 2006-2-2 r^g"%nq9/
* @version 1.0 9K4]~_%h\
*/ x`3F?[#l
public class MergeSort implements SortUtil.Sort{ ab-z 7g
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/* (non-Javadoc) ~-J!WC==U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d+m}Z>iQ1O
*/ FGRdA^`
public void sort(int[] data) { P]A~:Lj
int[] temp=new int[data.length]; +Oxw?`I$
mergeSort(data,temp,0,data.length-1); 0gevn
} $V/Hr/0
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private void mergeSort(int[] data,int[] temp,int l,int r){ ,`Yx(4!rR
int mid=(l+r)/2; o&U'zaj
if(l==r) return ; )G+D6s23
mergeSort(data,temp,l,mid); J]AkWEiCJ
mergeSort(data,temp,mid+1,r); 6x*$/1'M3;
for(int i=l;i<=r;i++){ 4lp90sa
temp=data; D*_Z"q_B
} &eA!h
int i1=l; " J4?Sb <
int i2=mid+1; d~QZcR
for(int cur=l;cur<=r;cur++){ fK
4,k:YC
if(i1==mid+1) [@_IUvf^.
data[cur]=temp[i2++]; ~DL-@*&
else if(i2>r) 9M]%h
data[cur]=temp[i1++]; Jn\@wF9xd
else if(temp[i1] data[cur]=temp[i1++]; >?L)+*^
else D!g\-y
data[cur]=temp[i2++]; 7;8DKY q
} F!RzF7h1
} IE*5p6IM~
~[Fh+t(Y
} QAxR'.d
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7>{
改进后的归并排序: ABIQi[A
LlF|VR&P.
package org.rut.util.algorithm.support; xRrKrs &eE
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import org.rut.util.algorithm.SortUtil; SHA6;y+U/~
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/** ^1\[hyZ!
* @author treeroot hpBn_
* @since 2006-2-2 A+QOox]<
* @version 1.0 Io*mFa?
*/ b/]@G05>>
public class ImprovedMergeSort implements SortUtil.Sort { 1nZ7xCDK98
4qKMnYR
private static final int THRESHOLD = 10; ETQL,t9m
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/* m=#<
* (non-Javadoc) JY0}#FtgV
* dfR?O#JPU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?y|8bw<
*/ CkeqK
public void sort(int[] data) { |h 3`z
int[] temp=new int[data.length]; :c3'U_H^
mergeSort(data,temp,0,data.length-1); p5V.O20
} ']^_W0?=
cs-dvpMZ
private void mergeSort(int[] data, int[] temp, int l, int r) { vO
3-B
int i, j, k; yyv<MSU8
int mid = (l + r) / 2; '{F
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if (l == r) VthM`~3
return; 8eDKN9kq
if ((mid - l) >= THRESHOLD) d-ML[^G
mergeSort(data, temp, l, mid); Fu*Qci1Z
else E/Adi^
insertSort(data, l, mid - l + 1); q6T>y%|FZ
if ((r - mid) > THRESHOLD) Pm=i(TBS/
mergeSort(data, temp, mid + 1, r); q+1SU6x'm
else 0N`'a?x
insertSort(data, mid + 1, r - mid); cHw-;
M1,1J-h
for (i = l; i <= mid; i++) { cS;O]>/5
temp = data; y"nL9r.,:
} ,0^9VWZV
for (j = 1; j <= r - mid; j++) { 5cZKk/"Ad}
temp[r - j + 1] = data[j + mid]; zz[[9Am!
} 9oA-Swc[
int a = temp[l]; mKZ^FgG
int b = temp[r]; "SFs\] Z
for (i = l, j = r, k = l; k <= r; k++) { Y}hz UKJ
if (a < b) { hB1Gtc4n
data[k] = temp[i++]; I`KBj6n
a = temp; $[HpY)MSRw
} else { Q^|aix~ K
data[k] = temp[j--]; f'&
b = temp[j]; lFc4| _c g
} z\6/?5D#v
} N,?D<NjXl
} dY$jg
*rmwTD"
/** U\`yLsKvH`
* @param data q,fk@GI'2
* @param l =G-u "QJ6
* @param i E|BiK
*/ eSA%:Is.
private void insertSort(int[] data, int start, int len) { /GU%{nT
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); H\RuYCn2G
} F^}n7h=qk
} $-R9J6NN
} :}[[G2|9
} TM$Ek^fQ.
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堆排序: F/chE c
V
QP[`*X
package org.rut.util.algorithm.support; DOGg=`XK1
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import org.rut.util.algorithm.SortUtil; F<^93a9
%
ovk}}%;
/** h|
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* @author treeroot R WK##VHK
* @since 2006-2-2 Dwi[aC+k
* @version 1.0 :rX/ILAr
*/ n$YCIW)0
public class HeapSort implements SortUtil.Sort{ 'P,F)*kh
WgC*bp{
/* (non-Javadoc) CJ
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #^;^_
*/ 8-
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public void sort(int[] data) { (??|\
&DTi
MaxHeap h=new MaxHeap(); sow/JLlbC
h.init(data); &`A2&mZ
for(int i=0;i h.remove(); Co^a$K
System.arraycopy(h.queue,1,data,0,data.length); EL=}xug,?
} ]Zz<9zix
*|Fl&`2
private static class MaxHeap{ +gsk}>"
DU:
sQS4
void init(int[] data){ d8T,33>T
this.queue=new int[data.length+1]; #p^r)+\3=
for(int i=0;i queue[++size]=data; 9,;+B8-A
fixUp(size); R@H}n3,
} BlvNBB1^
} !WReThq
^Wz3 q-^
private int size=0; [j`-R
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Cb/?hT
private int[] queue; @5-+>\Hd^t
/,Sd
public int get() { !saKAb}d7H
return queue[1]; :j m|)
} 7OOod1
tHo0q<.oX
public void remove() { 5`3f"(ay/
SortUtil.swap(queue,1,size--); .5m^)hi
fixDown(1); ^. i;,
} xuDn:
file://fixdown e`Z3{H}
private void fixDown(int k) { YJ{d\j
int j; wOp# mT
while ((j = k << 1) <= size) { XT5Vo
if (j < size %26amp;%26amp; queue[j] j++; SY}iU@xo
if (queue[k]>queue[j]) file://不用交换 <AB.`["
break; T6ZJ SKM
SortUtil.swap(queue,j,k); ,-XJ@@2gM
k = j; t(:6S$6{e
} e[@
^UY
} 2)^[SpZ
private void fixUp(int k) { 7" wn024
while (k > 1) { x{|n>3l`b9
int j = k >> 1; uPpRzp
if (queue[j]>queue[k]) dsxaxbVj%
break; d4P0f'.z
SortUtil.swap(queue,j,k); 5}4MXI4
k = j; TIa`cU`
} (u
>:G6K
} kty,hAXe
Px4zI9;cB
} u?f3&pA
#dGg !D
} '#.:%4
ka&-tGg
SortUtil: BVC{Zq6hi
Hvq< _&2
package org.rut.util.algorithm; 7=ZB;(`L1
xUD$i?3z
import org.rut.util.algorithm.support.BubbleSort; XjwTjgL<
import org.rut.util.algorithm.support.HeapSort; `<>8tZS9"
import org.rut.util.algorithm.support.ImprovedMergeSort; A{E0 a:v
import org.rut.util.algorithm.support.ImprovedQuickSort; Y4Z?`TL
import org.rut.util.algorithm.support.InsertSort;
1Nk}W!v
import org.rut.util.algorithm.support.MergeSort; (t9qwSS8z
import org.rut.util.algorithm.support.QuickSort; Tj{!Fx^H
import org.rut.util.algorithm.support.SelectionSort; 7,e=|%7.
import org.rut.util.algorithm.support.ShellSort; >~$ S!
.6E7 R
/** AMYoSc
* @author treeroot A_%}kt
(6
* @since 2006-2-2 J 6S
* @version 1.0 I#Tl
*/ Hf
%;FaJ=
public class SortUtil { ^aZ Wu|p
public final static int INSERT = 1; +>OEp*
j
public final static int BUBBLE = 2; DZXv3gnX
public final static int SELECTION = 3; _pNUI{De
public final static int SHELL = 4; "7)F";_(^
public final static int QUICK = 5; ryx<^q
public final static int IMPROVED_QUICK = 6; @ec QVk
public final static int MERGE = 7; r\[HR ^`
public final static int IMPROVED_MERGE = 8; i*Y/q-N|
public final static int HEAP = 9; 't{=n[
5Tpn`2F
public static void sort(int[] data) { |U^
ff^]
sort(data, IMPROVED_QUICK); 2uWzcy ?F
} 5Kv=;o=U
private static String[] name={ ,h]N*Z-I"
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" :7Vm]xd}do
}; 4:<0i0)5
z PV/{)S
private static Sort[] impl=new Sort[]{ G-n`X":$DT
new InsertSort(), ^B& Z
new BubbleSort(), F;ONo.v;
new SelectionSort(), TL7-uH
new ShellSort(), ^@)/VfVg
new QuickSort(), VUF7-C*
new ImprovedQuickSort(), @;<w"j`r
new MergeSort(), ]jHB'Y
new ImprovedMergeSort(), 317Buk
new HeapSort() ]V@!kg(p8
}; {=g-zsc]K
>M:5yk@
public static String toString(int algorithm){ 4g1u9Sc0
return name[algorithm-1]; K)Db3JIIk
} CaBTqo
&9s6p6eb
public static void sort(int[] data, int algorithm) { O~,^x$ve
impl[algorithm-1].sort(data); X\%],"9%
} {b<8Z*4W
5[gkGKkf_
public static interface Sort { ?o.G@-
public void sort(int[] data); =,@SZsM*B
} jQ`"Op 3
?$n<