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。 ExSM=
插入排序: \HkBp&bqK
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package org.rut.util.algorithm.support; l2:-).7xt
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import org.rut.util.algorithm.SortUtil; %p$XK(6
/** vd(S&&]o1
* @author treeroot _p5#`-%mM
* @since 2006-2-2 5S2 j5M00
* @version 1.0 ]z5hTY
*/ rMHh!)^#W
public class InsertSort implements SortUtil.Sort{ 9(OeH7
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/* (non-Javadoc) B@NBN&Fr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h# KSKKNW
*/ bmK
public void sort(int[] data) { 1#%H!GKvTU
int temp; ot[ZFF\
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); AIY 1sSK
} c*.
} ZI;*X~h
} `e~i<Pi
[@5cYeW3.
} `2LmLFkb
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冒泡排序: fP5i3[T
5>+@.hPX
package org.rut.util.algorithm.support; TfT^.p*
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import org.rut.util.algorithm.SortUtil; /3Gq&[R{
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/** m_CWVw
* @author treeroot 8<mloM-4
* @since 2006-2-2 YY :{/0?
* @version 1.0 yn$1nt4
*/ iE
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public class BubbleSort implements SortUtil.Sort{ HR"clD\{Di
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/* (non-Javadoc) wdfbl_`T
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iQ(j_i'+!I
*/ _pZ
<
public void sort(int[] data) { LH)1IGAx2y
int temp; i!*<LIq
for(int i=0;i for(int j=data.length-1;j>i;j--){ axph]o@ y@
if(data[j] SortUtil.swap(data,j,j-1); s>I]_W)Pt
} sR>>l3H
} fS/:OnH
} M>Tg$^lm
} aJf3rHX
u"(NN9s
} n44 T4q
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选择排序: a>W++8t1 ;
Md@x2Ja
package org.rut.util.algorithm.support; S|)atJJ0G"
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import org.rut.util.algorithm.SortUtil; *#b
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/**
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* @author treeroot d/j?.\
* @since 2006-2-2 q4w]9b/
* @version 1.0 p+|8(w9A${
*/ Z!~_#_Ugl
public class SelectionSort implements SortUtil.Sort { ;$zvm`|:
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/* \wsVO"/
* (non-Javadoc) NQ;X|$!zH
* 97\K ]Tr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f_n
*/ ]r3/hDRDL@
public void sort(int[] data) { Qs
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int temp; |v8hg])I+
for (int i = 0; i < data.length; i++) { &
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int lowIndex = i; ym%` l!
for (int j = data.length - 1; j > i; j--) { #}B1W&\sw
if (data[j] < data[lowIndex]) { qpjZ-[UC
lowIndex = j; Um\HX6
} .=Oww
} _q#pEv
SortUtil.swap(data,i,lowIndex); EjFpQ|-L|
} dWiNe!oY2
} P ?f${t+
K];]
} F"k`PF*b
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Shell排序: aReJ@
0C%IdV%CU
package org.rut.util.algorithm.support; \ui'~n_t]
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import org.rut.util.algorithm.SortUtil; #J3o~,t<
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/**
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* @author treeroot $%\6"P/64
* @since 2006-2-2 XZ]ji9'
* @version 1.0 !;(Wm6~*ad
*/ h[iO'Vq
public class ShellSort implements SortUtil.Sort{ vJGH8$%;,
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/* (non-Javadoc) CF','gPnc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BK4S$B
*/ IMbF]6%p(
public void sort(int[] data) { 5o 5DG
for(int i=data.length/2;i>2;i/=2){
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for(int j=0;j insertSort(data,j,i); "GZ}+K*GG
} %V]v,
} sV2D:%\K:
insertSort(data,0,1); L5 Cfa-
} i"iy 0?
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/** t !6sU]{
* @param data $Ugc:L<h+
* @param j #~/9cVm$
* @param i (0Br`%!F
*/ .6$=]hdAp
private void insertSort(int[] data, int start, int inc) { Uv>e :U7 ;
int temp; %i3[x.M
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); tjRwbnT"
} X$\CC18
} \
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} J5Zz*'av'
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} ysK J=
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快速排序: R[l`# I
w (RRu~J
package org.rut.util.algorithm.support; j0+D99{R
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import org.rut.util.algorithm.SortUtil; KJOb1MM
#tHYCSr]
/** &x\)] i2f
* @author treeroot 'D`lVUB
* @since 2006-2-2 qGV(p}$O
* @version 1.0 B,_K mHItd
*/ E_A5KLP
public class QuickSort implements SortUtil.Sort{ AEnkx!o
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/* (non-Javadoc) wT- -i@@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u(8{5"C
*/ qS! Lt3+
public void sort(int[] data) { -f ~1Id
quickSort(data,0,data.length-1); eDP&W$s#
} oKGF'y?A>
private void quickSort(int[] data,int i,int j){ Ru#pJb(R
int pivotIndex=(i+j)/2; tzd!r7
file://swap bcwb'D\a
SortUtil.swap(data,pivotIndex,j); c-&Q_lB
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int k=partition(data,i-1,j,data[j]); $eT[`r
SortUtil.swap(data,k,j); ./3/3&6
if((k-i)>1) quickSort(data,i,k-1); PPV T2;9
if((j-k)>1) quickSort(data,k+1,j); *2-b&PQR{
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} _u6NaB
/** Q%q;=a
* @param data hG~.Sc:G
* @param i (-0d@eqw
* @param j :}fA98S
* @return Tf!6N<dRXR
*/ VByA6^JR
private int partition(int[] data, int l, int r,int pivot) { ;Dp*.YJ
do{ TAOsg0
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ;PG=
3j_
SortUtil.swap(data,l,r); <5j%!6zo
} }jC^&%|
while(l SortUtil.swap(data,l,r); E A55!
return l; !mqIq}h
} X=f %!
Ws2?sn#x
} vs+aUT C\
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改进后的快速排序: `5oXf
2i#Ekon
package org.rut.util.algorithm.support; ?o6#i 3k#'
2 f%+1uU
import org.rut.util.algorithm.SortUtil; O>vCi&
%wru)
/** G?LC!9MB
* @author treeroot NpM;vO
* @since 2006-2-2 5c}loOq
* @version 1.0 o-&0_Zq_
*/ r7V !M1
public class ImprovedQuickSort implements SortUtil.Sort { -{Ar5) ?='
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private static int MAX_STACK_SIZE=4096; di+|` O
private static int THRESHOLD=10; |%|Vlu
/* (non-Javadoc) x;:jF_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &+k*+
*/ A2L"&dl
public void sort(int[] data) { ?-2s}IJO
int[] stack=new int[MAX_STACK_SIZE]; tKuJ &I~
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int top=-1; `5(F'o
int pivot; Yc6.v8a
int pivotIndex,l,r; u.n'dF-
=(\BM')l
stack[++top]=0; Z
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stack[++top]=data.length-1;
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while(top>0){ F/LMk8RgR
int j=stack[top--]; `S-%}eUv
int i=stack[top--]; +!ljq~%
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pivotIndex=(i+j)/2; { Dm@_&
pivot=data[pivotIndex]; b?,%M^9\`
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SortUtil.swap(data,pivotIndex,j); ..BP-N)V)
j$s/YI:
file://partition 3HcduJntl
l=i-1; noz1W ]
r=j; 0:I<TJ~P
do{ #ucb
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); /+`%u&<
SortUtil.swap(data,l,r); K8[Um!(
} -O1$jBQS
while(l SortUtil.swap(data,l,r); !"RRw&0M
SortUtil.swap(data,l,j); [742s]j
0!0o[3*
if((l-i)>THRESHOLD){ }!Pty25j
stack[++top]=i; umnQ$y
0
stack[++top]=l-1; +rSU
} CSW+UaE
if((j-l)>THRESHOLD){ Gl|n }wo$
stack[++top]=l+1; z>y#^f)r
stack[++top]=j; #l- 0$
} q o^mp
S#y GqN0i
} a%kvC#B
file://new InsertSort().sort(data); h* 1T3U$
insertSort(data); Np$&8v+en
} o-l-Z|)7
/** FZ]+(Q"]:
* @param data H =~7g3
*/ ,=G]tnsv^
private void insertSort(int[] data) { 88S:E7
$
int temp; Y}2Sr-@u
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); gE^pOn
} y4I Qa.F
} j6k"%QHf
} uH'? Ikx"
7hPwa3D^
} / bH2Z
aMHC+R1X
归并排序: %-K5sIz
+zLw%WD[l
package org.rut.util.algorithm.support; lEHXh2
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L.!jo
import org.rut.util.algorithm.SortUtil; KDP4 7A
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/** xw_)~Y%\
* @author treeroot @Y.r ,q
* @since 2006-2-2 ]&D=*:c
* @version 1.0 -Edy ~;_
*/ p"jze3mF
public class MergeSort implements SortUtil.Sort{ r7?nHF
o37oR v]
/* (non-Javadoc) Pn.DeoHme
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {=Jo!t;f
*/ coPdyw'9&
public void sort(int[] data) { f##/-NG
int[] temp=new int[data.length]; Q_iN/F
mergeSort(data,temp,0,data.length-1); :X-S&SX0
} OX]P;#4tU
^=5y;
private void mergeSort(int[] data,int[] temp,int l,int r){ s]kzXzRC?
int mid=(l+r)/2; c[ 0`8s!
if(l==r) return ; +U_1B%e(%
mergeSort(data,temp,l,mid); 8>x'. 8
mergeSort(data,temp,mid+1,r); L1g0Dd\Ox
for(int i=l;i<=r;i++){ bE2O[B
temp=data; I"3C/ pU2
} 6H U*,
int i1=l; ZADMtsk
int i2=mid+1; lP]Y^Gz
for(int cur=l;cur<=r;cur++){ G'w!Aw s
if(i1==mid+1) ?)k]Vg.
data[cur]=temp[i2++]; 3)?WSOsL:
else if(i2>r) |V{ Q
data[cur]=temp[i1++]; vp!F6ZwO
else if(temp[i1] data[cur]=temp[i1++]; M,li\)J!&
else f`/('}t
data[cur]=temp[i2++]; 5}]+|d;
} [ @"6:tTU
} .%.7~Nu,
SVn@q|N
} hp9LV2_5
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改进后的归并排序: e`7>QS;.
VX8CEO
package org.rut.util.algorithm.support; pO:]3qv
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import org.rut.util.algorithm.SortUtil; >s"/uo
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/** 6\K\d_x
* @author treeroot h:?qd
* @since 2006-2-2 );t+~YPS
* @version 1.0 y6[ le*T
*/ ]plp.f#av
public class ImprovedMergeSort implements SortUtil.Sort { Ab j7
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private static final int THRESHOLD = 10; qsbo"29
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/* m9:ah<
* (non-Javadoc) >.K%W*t
* P\6:euI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a9{NAyl<oo
*/ V!^0E.?a
public void sort(int[] data) { ."B{U_P&
int[] temp=new int[data.length]; SN L-6]j
mergeSort(data,temp,0,data.length-1); 2;
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} &}2@pu[S?7
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private void mergeSort(int[] data, int[] temp, int l, int r) { =4SXntU!e
int i, j, k; 9609
int mid = (l + r) / 2; DQXcf*R
if (l == r) Ny$3$5/
return; GQ@mQ=i
if ((mid - l) >= THRESHOLD) .RFH@''
mergeSort(data, temp, l, mid); .43cI(
else Gbclu.4
insertSort(data, l, mid - l + 1); .o/uA
if ((r - mid) > THRESHOLD) HZWt>f
mergeSort(data, temp, mid + 1, r); D^.
c:
else a*.#Zgy:lK
insertSort(data, mid + 1, r - mid); 7[qL~BT+
qA`@~\qh"
for (i = l; i <= mid; i++) { \6?a
temp = data; L;j++^p
} L2EQ 9i'[
for (j = 1; j <= r - mid; j++) { C5TV}Bq\
temp[r - j + 1] = data[j + mid]; '&Y_,-i
} Fc \]*
int a = temp[l]; YOGj__:
int b = temp[r]; 0\ (:y^X
for (i = l, j = r, k = l; k <= r; k++) { E JuTv%Y8
if (a < b) { <y^_&9
data[k] = temp[i++]; @/^mFqr2
a = temp; zN]%p>,)HB
} else { jTt9;?)
data[k] = temp[j--]; 0!lWxS0#=
b = temp[j]; !Pnjr T
} QOg >|"KL
} `m<O!I"A
} 3Zd,"/RH
zN[&
iKf
/** ,z/aT6M?H
* @param data 81s
}4
* @param l YT(Eh3ID
* @param i C]5 kQ1Og
*/ kV?fie<\)
private void insertSort(int[] data, int start, int len) { Bz-jy.
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); v=lW5%r,'
} H~Vf;k>
} 6V JudNA
} s*yl&El/
} +#BOWz
^ `Ozw^~
堆排序: t&{;6MiE
1a{r1([)
package org.rut.util.algorithm.support; B^P&+,\[}
&*+$38XE^
import org.rut.util.algorithm.SortUtil; f?k0(rl
h L [ eA
/** W>d)(
* @author treeroot %ZWt 45A
* @since 2006-2-2 9ABU^ig
* @version 1.0 HV/:OCK
*/ ^OWG9`p+
public class HeapSort implements SortUtil.Sort{ h`1<+1J9
Fl=H5HR
/* (non-Javadoc) x$BNFb%I1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jUA~}DVD
*/ -W('^v_*
public void sort(int[] data) { ;; +AdN5
MaxHeap h=new MaxHeap(); Nv36#^Z
h.init(data); =ejU(1 g
for(int i=0;i h.remove(); Yr-SlO>
System.arraycopy(h.queue,1,data,0,data.length); G|1.qHP[F
} XxmWj-=qO
4{zy)GE|W
private static class MaxHeap{ |3,WiK='
IV. })8
void init(int[] data){ #c@&mus
this.queue=new int[data.length+1]; 4y7_P0}:B
for(int i=0;i queue[++size]=data; -]zb3P
fixUp(size); nD*iSb*
} uWdF7|PN7
} 04|ZwX$>+
<.4(#Ebd
private int size=0; Bgc]t
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private int[] queue; [q[37;ZEQ
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public int get() { C-c'"FHq
return queue[1]; P1LOj
} {j>a_]dTVX
BM /FOY;
public void remove() { z&d.YO_W
SortUtil.swap(queue,1,size--); iVZ}+Ct<"
fixDown(1); xE?KJ
} zs#-E_^%M
file://fixdown e3;D1@
private void fixDown(int k) { \Yr*x7!
int j; d%'#-w'
while ((j = k << 1) <= size) { kMch
if (j < size %26amp;%26amp; queue[j] j++; )f:i4.M
if (queue[k]>queue[j]) file://不用交换 2\1+M)
break; '|ntwK*f
SortUtil.swap(queue,j,k); nahq O|~
k = j; AtCT
} `3T=z{HR9g
} *GE6zGdN
private void fixUp(int k) { }UW*[dCf>C
while (k > 1) { ?{f6su@rW
int j = k >> 1; o1(;"5MM
if (queue[j]>queue[k]) Wds>'zzS
break; c 1F^Gj!8
SortUtil.swap(queue,j,k); K& ^qn&
k = j; lUEbxN
} Nz`8)Le
} "crR{OjE"
T/P\j0hR
} <9fXf*
AEyD?^?
} x7zc3%T's
]z^jz#>um&
SortUtil: cl^UFlf[
V[/9?5pM
package org.rut.util.algorithm; 06.%9R{
u$a K19K/
import org.rut.util.algorithm.support.BubbleSort; La1:WYt
import org.rut.util.algorithm.support.HeapSort; |cY HH$
import org.rut.util.algorithm.support.ImprovedMergeSort; %;:![?M
import org.rut.util.algorithm.support.ImprovedQuickSort; .2JZ7
import org.rut.util.algorithm.support.InsertSort; }NC$Ce
import org.rut.util.algorithm.support.MergeSort; :[n~(~7?
import org.rut.util.algorithm.support.QuickSort; ,nteIR'??
import org.rut.util.algorithm.support.SelectionSort; u?72]?SM
import org.rut.util.algorithm.support.ShellSort; K _VIk'RB
^R@)CIQ
/** 5 [~HL_u;,
* @author treeroot (]'wQ4iQ
* @since 2006-2-2 &EV%g6
* @version 1.0 ^;PjO|mD
Z
*/ f<bB= 9J
public class SortUtil { cwzkA,e@
public final static int INSERT = 1; n>.@@
public final static int BUBBLE = 2; h8UhrD<:
public final static int SELECTION = 3; aF?_V!#cT
public final static int SHELL = 4; vf3) T;X>
public final static int QUICK = 5; j13-?fQ&
public final static int IMPROVED_QUICK = 6; IwnDG;+Ap
public final static int MERGE = 7; S,:!H@~B
public final static int IMPROVED_MERGE = 8; 1w7tRw
public final static int HEAP = 9; }XBF#BN
Qt4mg?X/
public static void sort(int[] data) { qWr=Oiu
sort(data, IMPROVED_QUICK); _)5E=
} 45.ks.
private static String[] name={ )b1hF
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" QHO n?e
}; cN&Ebn
G>vK$W$f N
private static Sort[] impl=new Sort[]{ *$0*5d7
new InsertSort(), n}Z%D-b$
new BubbleSort(), [ ft6xI
new SelectionSort(), ~Re4zU
new ShellSort(), O.Pp*sQ^
new QuickSort(), ++,I`x+p
new ImprovedQuickSort(), A` _dj}UF
new MergeSort(), 6t; ;Fz
new ImprovedMergeSort(), q("XS
new HeapSort() $5 G(_
}; Iz+%wAZ|B6
O/#3QK
public static String toString(int algorithm){ 9~~NxWY%x
return name[algorithm-1]; 1<m`38'
} dM^EYW
m^L !_~
public static void sort(int[] data, int algorithm) { Q|o$^D,
impl[algorithm-1].sort(data); [&99#7B
} x@43ZH_
Fj<*!J$,
public static interface Sort { l3b=8yn.
public void sort(int[] data); h!SsIy(
} u
$-&Im<
2EM6k|l5
public static void swap(int[] data, int i, int j) { [G8EX3
int temp = data; M4)U
[v
data = data[j]; O)&W0`VY
data[j] = temp; AAa7)^R
} vcQl0+&
} y_L8i[