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。 ]~kqPw<R
插入排序: #J^p,6
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package org.rut.util.algorithm.support; ub4(mS
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import org.rut.util.algorithm.SortUtil; pok,`yW\
/** *;"^b\f5_
* @author treeroot K"-N:OV
* @since 2006-2-2 zS?i@e
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* @version 1.0 :CK,(?t
*/ pklcRrx,a
public class InsertSort implements SortUtil.Sort{ b'vJPv~hI
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/* (non-Javadoc) }1;Ie0l=_e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1`2lTkg
*/ hn!$?Vo.
public void sort(int[] data) { *xL#1
int temp; r\=p.cw<
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); y7,~7f!N2
} >]C;sP
} u$<FKp;I
} @@ZcW<Y"
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} tEP^w
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冒泡排序: hh: )"<[
/xsa-F
package org.rut.util.algorithm.support; #docBsHX&s
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import org.rut.util.algorithm.SortUtil; ]*zF#Voc
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/** 5bZ`YO
* @author treeroot 2$1rS}}
* @since 2006-2-2 Ej.D!@
* @version 1.0
QW6k!ms$
*/ jN5Sc0|b
public class BubbleSort implements SortUtil.Sort{ 3t%uUkXl
o2Pj|u*X
/* (non-Javadoc) #+ n
&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }$AC0
*/ @ Cqg2
public void sort(int[] data) { ;y5cs;s
int temp; =WDf [?ED
for(int i=0;i for(int j=data.length-1;j>i;j--){ ?>lmLz!e
if(data[j] SortUtil.swap(data,j,j-1); `I
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} <;U"D.'
} cpE&Fba}"
} `5GJ,*{z
} uLL#(bhDr
$V5Ol6@2
} kN>d5q9b%X
7Jc=`Zm'
选择排序: g3x192f
u c7Y8iO
package org.rut.util.algorithm.support; n]8_]0{qi
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import org.rut.util.algorithm.SortUtil; Aoa0czC~
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/** L~ 1Lv?
* @author treeroot :B=`^>RK
* @since 2006-2-2 fJ\Ys;l[j
* @version 1.0 DB>>U>H-
*/ n,Ux>L
public class SelectionSort implements SortUtil.Sort { *?KQ\ Y
t.knYO)
/* [$H8?J
* (non-Javadoc) =1+I<Ljk
* !7bC\ {
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dm,b ZHo
*/ d5zzQ]|L
public void sort(int[] data) { w_|WberU
int temp; q{ctHs Q(9
for (int i = 0; i < data.length; i++) { 7 ic]q,
int lowIndex = i; f#X`e'1
for (int j = data.length - 1; j > i; j--) { mX |AptND
if (data[j] < data[lowIndex]) { ]7xAL7x
lowIndex = j; \=5CNe
} 2d1'!B
zDA
} Gl1`Nx0
SortUtil.swap(data,i,lowIndex); J`"1DlH
} fDbs3"H Q
} m+uh6IqN./
F ^E(AE
} 7Uj[0Awn
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Shell排序: _=}Y
lR
Y1
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package org.rut.util.algorithm.support; qw_qGgbl
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import org.rut.util.algorithm.SortUtil; %8 4<@f&n]
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/** 8Q6il-
* @author treeroot S2fw"1h*x
* @since 2006-2-2 &Rn/c}[{
* @version 1.0 I [e7Up
*/ z*9/ "M
public class ShellSort implements SortUtil.Sort{ K7_)!=DcX
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/* (non-Javadoc) 5h20\b?=$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;j/ur\37
*/ .vT'hu
public void sort(int[] data) {
Box,N5AA
for(int i=data.length/2;i>2;i/=2){ 1W/=
=+%I
for(int j=0;j insertSort(data,j,i); h+$_:](PC
} %F}`;>C3
} #lct"8
insertSort(data,0,1); BB|{VwN
} ".w*_1G7U
*`l>1)B>
/** &Vonu*
* @param data {b#c0>.8-
* @param j 8^4X/n
* @param i <edAWc+
*/
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private void insertSort(int[] data, int start, int inc) { -k<.Q=]<t
int temp; @*2FG\c<
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); c6lEWC:
} kbMIMZC/G
} (bT\HW%m
} >ueJ+sgH
*#2`b%qh\M
} Qy3e,9nS
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快速排序: k|
jCc
sxsM%Gb?H
package org.rut.util.algorithm.support; 5`z{A
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import org.rut.util.algorithm.SortUtil; 'Y&yt"cs
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/** awC&xVf
* @author treeroot K=B[MT#V{2
* @since 2006-2-2 6,c,i;J_
* @version 1.0 1C|j<w=i
*/ ]1Q\wsB
public class QuickSort implements SortUtil.Sort{ 3cfkJ|fuwe
O%+:fJz6wI
/* (non-Javadoc) MA1,;pv6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8a05`ZdP
*/ \<PX'mnO
public void sort(int[] data) { @D60
quickSort(data,0,data.length-1); :))AZ7_
} 3PJ
private void quickSort(int[] data,int i,int j){ 1DLQZq
int pivotIndex=(i+j)/2; H$[--_dI{
file://swap g`&pQ%|=
SortUtil.swap(data,pivotIndex,j); :V_$?S
5T;_k'qe
int k=partition(data,i-1,j,data[j]); T+~~w'v0
SortUtil.swap(data,k,j); tSOF7N/<
if((k-i)>1) quickSort(data,i,k-1); uZQ)A,#n;
if((j-k)>1) quickSort(data,k+1,j); p 3_Q
n"MFC
} =)bZSb"<"
/** z_Qw's
* @param data Y{J/Oib
* @param i "1[N;|xa
* @param j <4!w2vxG
* @return @FbzKHdV/
*/ Az.Y-O<$\
private int partition(int[] data, int l, int r,int pivot) { TVjY8L9'h
do{ 0dgR;Dl(
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Kt^PL&A2
SortUtil.swap(data,l,r); M!I:$DZt
} fIBLJ53
while(l SortUtil.swap(data,l,r); wLgRI$_Dm
return l; =tog<7
} g^]Q*EBa
UIu'x_qc
} d-?~O~qD|!
}U#S*
改进后的快速排序: (Hn,}(3S
h{h=',o1
package org.rut.util.algorithm.support; Xz5=fj&
t^7R6y
import org.rut.util.algorithm.SortUtil; {$s:N&5
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/** Dgkt-:S/T|
* @author treeroot P,v}Au( UI
* @since 2006-2-2 7C 4Njei"
* @version 1.0 Np=*B_ @8
*/ U5"F1CaW~
public class ImprovedQuickSort implements SortUtil.Sort { wIY#TBu
!W3Le$aL
private static int MAX_STACK_SIZE=4096; oF*Y$OEu?c
private static int THRESHOLD=10; fqr}tvMr=T
/* (non-Javadoc) cw^FOV*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Et- .[
*/ HQE#O4
public void sort(int[] data) { (Ux%7H_d
int[] stack=new int[MAX_STACK_SIZE]; $ &^
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int top=-1; lRO8}XSI
int pivot; ^<E,aCy
int pivotIndex,l,r; "~+K`*0r8
dIf Jr}ih
stack[++top]=0; t /47lYN)
stack[++top]=data.length-1; [UI
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while(top>0){ 2.NzB7c*CM
int j=stack[top--]; r@!~l1$s`
int i=stack[top--]; T2Vj&EA@
F_-yT[i
pivotIndex=(i+j)/2; %r>vZ/>a
pivot=data[pivotIndex]; @TH \hr]
/vQ^>2X%
SortUtil.swap(data,pivotIndex,j); MDB}G
'
>kB?C!\
file://partition QUe.vb^O
l=i-1; &R8zuD`#
r=j; oOD|FrlY
do{ *%fOE;-?
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); {<]abO
SortUtil.swap(data,l,r); :WxMv~e{U
} RSnK`N\9jb
while(l SortUtil.swap(data,l,r); /stED{j,
SortUtil.swap(data,l,j); }5]NUxQ_
*in_Zt3
if((l-i)>THRESHOLD){ `#(4K4]1.
stack[++top]=i; l,/5$JGnk
stack[++top]=l-1; $@U`zy"Y
} @vv`86bm
if((j-l)>THRESHOLD){ UtWoSFZ'o!
stack[++top]=l+1; !BY=HFT
stack[++top]=j; 6-JnT_
} iFHVr'Og'
2
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} S\ li<xl
file://new InsertSort().sort(data);
Dho~6K}"
insertSort(data); g=%W"v
} N2~z&y8.
/** xp39TiXJ*
* @param data 0qTa @y
*/ 'Gc6ZSLM
private void insertSort(int[] data) { B02~/9*Y"
int temp; )V>FU=
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :N[2*.c[
} .O,gl$y}
} #
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} 0}b8S48|?
yrIT4y
} 95+}NJ;r
#?-W.
归并排序: #F9$"L1Hg
*&U9npN
package org.rut.util.algorithm.support; T0SD|'
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import org.rut.util.algorithm.SortUtil; /R,/hiKx\
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/** Wm\f:|U5`
* @author treeroot {:rU5 !n
* @since 2006-2-2 ())|x[>JS+
* @version 1.0 rLVAI#ci=
*/ ~<$8i}7
public class MergeSort implements SortUtil.Sort{ G)putk@
B]hZ4.B1
/* (non-Javadoc) '6aH*B:}*;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Fdzd!r1 v
*/ #._!.P
public void sort(int[] data) { @9L%`=]b^
int[] temp=new int[data.length]; WL7:22nSHa
mergeSort(data,temp,0,data.length-1); eHjR/MMr_
} [&39Yv.k,7
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private void mergeSort(int[] data,int[] temp,int l,int r){ p]>bN
int mid=(l+r)/2; g\^(>Ouc
if(l==r) return ; R<wb8iir
mergeSort(data,temp,l,mid); MBg^U<t8
mergeSort(data,temp,mid+1,r); VVf~ULZ-
for(int i=l;i<=r;i++){ g$:2c7uL
temp=data; \/,SH?>4x
} %%f=aPw
int i1=l; adxJA}K}
int i2=mid+1; bEy%S"\<
for(int cur=l;cur<=r;cur++){ <n#JOjHV
if(i1==mid+1) )wGC=,
data[cur]=temp[i2++]; q| j;dI&
else if(i2>r) @!F9}n
AP
data[cur]=temp[i1++]; ;lK2]
else if(temp[i1] data[cur]=temp[i1++]; 2f-Z\3)9 J
else m t*v@'l.
data[cur]=temp[i2++]; @Xh4ZMyEx
} n =v %}@f2
} 8ZahpB
{1qEN_ERx
} 5Ut0I]h|z
B kC(9[Ei
改进后的归并排序: 'N}Wo}1r
5H',Bm4-
package org.rut.util.algorithm.support; }%:?s6Ler
vWgh?h/ot
import org.rut.util.algorithm.SortUtil; ) ejvT-
Rc6Rk!^
/** 7'<4'BGzl]
* @author treeroot [s2%t"H-y
* @since 2006-2-2 QzS{2Y[OQ
* @version 1.0 co*5NM^
*/ V*/))n?
public class ImprovedMergeSort implements SortUtil.Sort { k%LE"Q
:b
;5O3:B
private static final int THRESHOLD = 10; %k2zsM
CBvBBt*
/* LyQO_mT2
* (non-Javadoc) 'DIE#l`
* 85X^T]zo
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5 )C~L]
*/ PzF)Vg
public void sort(int[] data) { [Z[)hUXE?
int[] temp=new int[data.length]; nU`;MW/^w
mergeSort(data,temp,0,data.length-1); >U}~Hv]
} w68qyG|wM
m+!%+S1
private void mergeSort(int[] data, int[] temp, int l, int r) { J^?O]|
int i, j, k; >:K3y$]_
int mid = (l + r) / 2; BpKP]V
if (l == r) 7>4t{aRf_8
return; ](W#Tj5-
if ((mid - l) >= THRESHOLD) Xau.4&\d
mergeSort(data, temp, l, mid); ;3-ssF}k*
else TLkkB09fvk
insertSort(data, l, mid - l + 1); f8n'9HOw>
if ((r - mid) > THRESHOLD) }^ iE|YKz
mergeSort(data, temp, mid + 1, r); B
51LZP
else &v`kyc
insertSort(data, mid + 1, r - mid); v(0vP}[Q7E
pLIBNo?
for (i = l; i <= mid; i++) { eygyVhJ
temp = data; ES+&e/G"ds
} >0m-S :lk
for (j = 1; j <= r - mid; j++) { .)o5o7H
temp[r - j + 1] = data[j + mid]; 'IgtBd|K>
} .p5*&i7
int a = temp[l]; LRmO6>y
int b = temp[r]; |n~v_V2.0
for (i = l, j = r, k = l; k <= r; k++) { TX
87\W.
if (a < b) { @<AIPla
data[k] = temp[i++]; '|+_~ZO*d
a = temp; =GpLlJ`-
} else { PK~okz4b
data[k] = temp[j--]; ]A\n>Z!;
b = temp[j]; K;Xn!:) V:
} %? g]{
} {7;TQ?/
} :DZiDJ@
6?Wsg`9
/** 68d @By
* @param data kj[[78
* @param l
U]P;X~$!
* @param i vD*KJ3(c
*/ [;b9'7j'
private void insertSort(int[] data, int start, int len) { H4pjtVBr
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 9#agI|d~
} Hnaq+ _]
} 1|%$ie
} 7,jqA"9
} 7Jqp2\
$~j]/ U
堆排序: MRa>@Jn??A
="4jk=on
package org.rut.util.algorithm.support; 1n,JynJ
6-^+btl)#
import org.rut.util.algorithm.SortUtil; "3v%|
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/** /q^( uWu
* @author treeroot E6US
* @since 2006-2-2 wg[*]_,a
* @version 1.0 d
EXw=u
*/ zL{KK9Or
public class HeapSort implements SortUtil.Sort{ kn<[v;+
~jPe9
/* (non-Javadoc) =*'`\}];"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M\GS&K$lq
*/ $pD^O!I)?
public void sort(int[] data) { FYi<+]HZ
MaxHeap h=new MaxHeap(); q80?C.,`
h.init(data); ;CC[>
for(int i=0;i h.remove(); 8?(4E 'vf
System.arraycopy(h.queue,1,data,0,data.length); }{ P}P}
} =l\D7s
+uH1rF_&@
private static class MaxHeap{ H<>x_}&
ZE1#{u~[y
void init(int[] data){ Gh< r_O~L3
this.queue=new int[data.length+1]; W[vak F
for(int i=0;i queue[++size]=data; ~vt8|OOo0
fixUp(size); h?SUDk:2^
} ':fVb3A[*d
} QTDI^ZeuF
@Wv*`
private int size=0; ' E@D
+Gjy%JFp
private int[] queue; eC3ZK"oJ
}b{N[
public int get() { 1\3n
return queue[1]; 1,/oS&?E
} )i?wBxq'MA
TcqqAc
public void remove() { ?iq:Gf
SortUtil.swap(queue,1,size--); %@IR7v~
fixDown(1); ZA# jw 8F
} 4[(P>`Unx
file://fixdown Vw,dHIe(3
private void fixDown(int k) { cL}g7D
int j; {:"bX~<^
while ((j = k << 1) <= size) { d)
> if<o
if (j < size %26amp;%26amp; queue[j] j++; tV T(!&(
if (queue[k]>queue[j]) file://不用交换 _ '}UNIL
break; phNv^R+
SortUtil.swap(queue,j,k); VMNihx0FJ
k = j; Y`_6Ny="
} p3-sEIw}Ru
} EBn7waBS
private void fixUp(int k) { -yC},tK
while (k > 1) { _qGkTiP
int j = k >> 1; .|rpj&>g
if (queue[j]>queue[k]) d6Z;\f7[
break; ;Z8K3p
SortUtil.swap(queue,j,k); o|UZdGu
k = j; Bkcs4 x
} -dza_{&+iZ
} | 0&~fY
Xl}>mbB
} rSa3u*xB
\ET7
} OW6i2 >Or
bclA+!1
SortUtil: $V@IRBm
DQE.;0ld
package org.rut.util.algorithm; -m-~
{5RM)J1
import org.rut.util.algorithm.support.BubbleSort; -f'z_&KI
import org.rut.util.algorithm.support.HeapSort; H_jMl$f)j
import org.rut.util.algorithm.support.ImprovedMergeSort; (llg!1
import org.rut.util.algorithm.support.ImprovedQuickSort; H*!E*_
import org.rut.util.algorithm.support.InsertSort; 3vMfms
import org.rut.util.algorithm.support.MergeSort; `?La
import org.rut.util.algorithm.support.QuickSort; pV1~REk$&
import org.rut.util.algorithm.support.SelectionSort; 9_&.G4%V
import org.rut.util.algorithm.support.ShellSort; QYg2'`(
x=9drKIw>
/** B>JRta;hj
* @author treeroot f>Ij:b`Z2
* @since 2006-2-2 X)'uTf0
* @version 1.0 C7nLa@
*/ i5rAb<q`
public class SortUtil { []'BrG)!
public final static int INSERT = 1; JH2d+8O:qK
public final static int BUBBLE = 2; _TkiI. '
public final static int SELECTION = 3; oo<,hOv
public final static int SHELL = 4; Bl(we/r
public final static int QUICK = 5; w%`7,du|
public final static int IMPROVED_QUICK = 6; ?a(ApD\
public final static int MERGE = 7; `Up3p24
public final static int IMPROVED_MERGE = 8; $_NVy>\&
public final static int HEAP = 9; Z~v.!j0
pWeKN`
public static void sort(int[] data) { l].dOso$`
sort(data, IMPROVED_QUICK); O,hT<
s "
} VBy=X\w]
private static String[] name={ V:yia^1
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" \]GBd~i<
}; j]YS(Y@AY
C?X^h{Tp
private static Sort[] impl=new Sort[]{ lNqYpyvy*
new InsertSort(), xMU4Av[{
new BubbleSort(), =r#of|`Q
new SelectionSort(), pYH#Vh
new ShellSort(), s_u@8e 6_
new QuickSort(), va| 1N/&
new ImprovedQuickSort(), LG@5Z-
new MergeSort(), L%Me
wU0TZ
new ImprovedMergeSort(), /wKL"M-%
new HeapSort() lorjMS
}; >DPC}@Wl
{}~7Gi!
public static String toString(int algorithm){ L`tr7EEr
return name[algorithm-1]; [>v.#:YM^
} +Y6=;*j$
E]i3E[T
public static void sort(int[] data, int algorithm) { `!
impl[algorithm-1].sort(data); [Jwo,?w
} '4ftclzL
j$,:cN
public static interface Sort { Qv|A^%Ub!
public void sort(int[] data); 7$Jb"s
} R8sj>.I9j
0M>+.}e+
public static void swap(int[] data, int i, int j) { Ic P]EgB
int temp = data; DFcgUEq
data = data[j]; EH=[!iW ;
data[j] = temp; X6kCYTJYF
} 4Un (}P'
} S&q@M