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。 =fmM=@!$<
插入排序: ax{+7 k
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package org.rut.util.algorithm.support; s'\PU1{
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import org.rut.util.algorithm.SortUtil; bQG2tDvu[
/** D 3m4:z
* @author treeroot \tf \fa
* @since 2006-2-2 &oJ=
* @version 1.0 KKm&~^c
*/ M&P?/Zi=L
public class InsertSort implements SortUtil.Sort{ 4$Oakl*l
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/* (non-Javadoc) P/;sZo
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h=6Zvf<x
*/ [<m1xr4"k
public void sort(int[] data) { 7{HJjH!zx
int temp; y.6D Z
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Q]WjW'Ry\
} g{K*EL<
} ceN*wkGyB
} C?6wIdp
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} Zcq'u
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冒泡排序: J7:VRf|,?(
l}-JtZ?[?
package org.rut.util.algorithm.support; Ara D_D
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import org.rut.util.algorithm.SortUtil; H8d%_jCr
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/** ~"eos~AuW
* @author treeroot \T)2J|mW
* @since 2006-2-2 G+Ft2/+\
* @version 1.0 JWhi*je
*/ TR:V7d
public class BubbleSort implements SortUtil.Sort{ df_hmkyj
X
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/* (non-Javadoc) 7J@iJW],,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g?,\bmH E
*/ 7b7~D +b
public void sort(int[] data) { <SeK3@Gi
int temp; ]?!#*<t r
for(int i=0;i for(int j=data.length-1;j>i;j--){ R;+vE'&CO
if(data[j] SortUtil.swap(data,j,j-1); ??&Q"6Oe
} &2-dZK
} &DoYz[q
} !{'C.sb?~
} c#'t][Ii
Fj? Q4_
} -xg$qvK
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选择排序: J^tLK T B
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package org.rut.util.algorithm.support; x6Q,$B
r;}%} /IX
import org.rut.util.algorithm.SortUtil; LIfQh
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/** =7{n 2
* @author treeroot ;&mefaFlWp
* @since 2006-2-2 o6L eC*
* @version 1.0 $yG>=GN
*/ s;!TB6b@
public class SelectionSort implements SortUtil.Sort { chw6_ctR>
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/* bgD4;)?5b
* (non-Javadoc) [(Z{5gK
* I8*_\Ez
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QWL$F:9:
*/ jK`b6:#(,
public void sort(int[] data) { _a?c,<A
int temp; \09m
?;^
for (int i = 0; i < data.length; i++) { RsnKB/
int lowIndex = i; 8T ?=_|
for (int j = data.length - 1; j > i; j--) { `[)
awP
if (data[j] < data[lowIndex]) { Ph@hk0dgr/
lowIndex = j; ~>8yJLZ.7
} VX+:k.}
} f(}?Sp_
SortUtil.swap(data,i,lowIndex); Mr/;$O{
} YN.[KQ(!
} ~mAv)JK
vjNP
} |~)!8N.{
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Shell排序: {D6lSj
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package org.rut.util.algorithm.support; R@ksYC3 F
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import org.rut.util.algorithm.SortUtil; 05o +VF;z
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/** f]c{,LFvZ
* @author treeroot TsiI5'tx
* @since 2006-2-2 BO5\rRa0
* @version 1.0 =$kSvCjP
*/ 2G=prS`s
public class ShellSort implements SortUtil.Sort{ be^+X[
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/* (non-Javadoc) KK-}&N8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )DR/Xu;b
*/ <L!9as]w
public void sort(int[] data) { d@d\9*mn
for(int i=data.length/2;i>2;i/=2){ _]oNbcbt(
for(int j=0;j insertSort(data,j,i); 42E%&DF
} EV=/'f[++
} &k\`!T1
insertSort(data,0,1); X
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eCK,
} |aD8
tk]>\}%
/** 1}=@';cK*
* @param data <c;U 0! m
* @param j 4$~A%JN3
* @param i m$XMq
*/ wk+| }s
private void insertSort(int[] data, int start, int inc) { Hl"^E*9x
int temp; )4O>V?B
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); W}6OMAbsE;
} (U`<r-n\n
} j Wpm"C
} Vt4KG+zm
G;jX@XqZ
} -l(G"]tRB
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快速排序: g
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SN#Cnu}
package org.rut.util.algorithm.support; =lb5 #
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import org.rut.util.algorithm.SortUtil; V*d@@%u**
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/** |K.J@zW
* @author treeroot s~i73Qk/
* @since 2006-2-2 @IE.@1
* @version 1.0 p;xMudM
*/ DH9p1)L'
public class QuickSort implements SortUtil.Sort{ _&SST)Y|
m#Y[EPF=|
/* (non-Javadoc) %4$J.6M
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8wH1x
.
*/ ^n%9Tu
public void sort(int[] data) { &s0_^5B0
quickSort(data,0,data.length-1); kac-@
} i;l0)q
private void quickSort(int[] data,int i,int j){ /#Gm`BT
int pivotIndex=(i+j)/2; ~pt#'65}:
file://swap xoe/I[P]U
SortUtil.swap(data,pivotIndex,j); +T8h jOkC
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int k=partition(data,i-1,j,data[j]); { POfT
m}
SortUtil.swap(data,k,j); Y@ l>4q")
if((k-i)>1) quickSort(data,i,k-1); yd=NafPM
if((j-k)>1) quickSort(data,k+1,j); ]39])ul
<^n@q f}
} wn Q% 'Eo
/** 5>\Lk>rI
* @param data !Bu=?gf
* @param i x'iBEm
* @param j JT cE{i
* @return boeIO\2}P0
*/ Xh?J"kjof
private int partition(int[] data, int l, int r,int pivot) { D b&=
N
do{ oK@_
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); w678
SortUtil.swap(data,l,r); 0Qr|!B:+9)
} q,>-4Cm
while(l SortUtil.swap(data,l,r); $aC%&&+wG
return l; {36QZV*P
} VJbn/5+P
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} 1$n!Lj=5
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改进后的快速排序: c~)H" n
3gQ2wP*K
package org.rut.util.algorithm.support; _m@+d>f_
ALi3JU
import org.rut.util.algorithm.SortUtil; Iy;bzHXs
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/** yD yMI
* @author treeroot t~V?p'a0ys
* @since 2006-2-2 u`gY/]y!
* @version 1.0 Uqd2{fji=#
*/ ~Q2,~9Dkc
public class ImprovedQuickSort implements SortUtil.Sort { SU7 erCHX
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private static int MAX_STACK_SIZE=4096;
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private static int THRESHOLD=10; WNp-V02l
/* (non-Javadoc) ekPn`U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,|^ lqY
*/ jRBKy8?[C
public void sort(int[] data) { S<o\.&J
int[] stack=new int[MAX_STACK_SIZE]; \E8CC>Jd
jmr1e).];
int top=-1; +5N09$f;R
int pivot; 9Itj@ps
int pivotIndex,l,r; 7e/K YS+!s
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stack[++top]=0; oTb4 T=
stack[++top]=data.length-1; um=qT)/D
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while(top>0){ H|8i|vbi
int j=stack[top--]; -&0H Atc
int i=stack[top--]; js[H $
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^
pivotIndex=(i+j)/2; w9,w?%F
pivot=data[pivotIndex]; 28,g 'k!
' p!\[*e
SortUtil.swap(data,pivotIndex,j); yIf>8ed]#
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file://partition "%dok@v
l=i-1; pIgjo>K
r=j; `7jdV
do{ D {N,7kT
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); qM9> x:V
SortUtil.swap(data,l,r); ]}9D*V
} (;2]`D [x
while(l SortUtil.swap(data,l,r); ;T|hNsSt
SortUtil.swap(data,l,j); tW \q;_DSr
7NP
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if((l-i)>THRESHOLD){ yr
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stack[++top]=i; +<7a$/L?4
stack[++top]=l-1; lQt* LWd[
} sSsRn*LN-:
if((j-l)>THRESHOLD){ a3B^RbDP&8
stack[++top]=l+1; m ol|E={si
stack[++top]=j; 9 UcSQ"D
} #TD0)C/
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} *6QmYq6c<
file://new InsertSort().sort(data); c n^z=?
insertSort(data); u= ydX
} o0FVVS l
/** u;H5p\zAzz
* @param data 6#(rWW"_
*/ +*Pj,+;W
private void insertSort(int[] data) { ?T7ndXX
int temp; &)F#cVB
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); jbs)]fqC;
} OO-b*\QW
} -n]E\"
} ;0Mg\~T~'
> m##JzWLr
} k-|b{QZ8!;
O_|p{65
归并排序: PJ'.s
BLcsIyq
package org.rut.util.algorithm.support; ?vocI
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import org.rut.util.algorithm.SortUtil; 9p%8VDF=
{"@E_{\
/** +^V%D!.$@
* @author treeroot nI<Ab_EB
* @since 2006-2-2 {GKq Ou
* @version 1.0 #_4JTGJ
*/ 2R`/Oox
public class MergeSort implements SortUtil.Sort{ 5}he)2*uD
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/* (non-Javadoc) )NCSO b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Qhsk09K_=4
*/ L7 g4'
public void sort(int[] data) { U=>4=gsG
int[] temp=new int[data.length]; Z*M-PaU}
mergeSort(data,temp,0,data.length-1); sI#r3:?i
} 8~eYN-#W&
I+FQ2\J*H
private void mergeSort(int[] data,int[] temp,int l,int r){ (VH0+
int mid=(l+r)/2; v@;!fBUt
if(l==r) return ; (g#,AX
mergeSort(data,temp,l,mid); |c3Yh,Sv
mergeSort(data,temp,mid+1,r); jLgx(bMn
for(int i=l;i<=r;i++){ e2*Fe9:
temp=data; Bw8&Amxx:
} '(&,i/O
int i1=l; OE_>Kw7q
int i2=mid+1; }q<%![%
for(int cur=l;cur<=r;cur++){ Y|y X]\,
if(i1==mid+1) V;>u()
data[cur]=temp[i2++]; E@D}Sqt
else if(i2>r) M,/{ 53
data[cur]=temp[i1++]; q? 2kD"%$
else if(temp[i1] data[cur]=temp[i1++]; @Yy']!Ju
else ["
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data[cur]=temp[i2++]; ?R\:6x<
} dT4e[4l
} Sp^jC
Xu
iTg7@%
} }5a$Ka-
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改进后的归并排序: (H-Y-Lk+
>2@ a\
package org.rut.util.algorithm.support; KvfZj
/%5X:*:H
import org.rut.util.algorithm.SortUtil; $][$ e
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/** n
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* @author treeroot +Rb0:r>kU
* @since 2006-2-2 aIW W[xZ
* @version 1.0 v#o<.
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*/ $ H2HVJ
public class ImprovedMergeSort implements SortUtil.Sort { fY{&W@#g
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private static final int THRESHOLD = 10; OX*5 yT{
M}*#{UV2
/* Ss
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* (non-Javadoc) 2$%E:J+2:$
* @N,I}_ 9-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \`$RY')9|!
*/ 2*9rhOK*
public void sort(int[] data) { yHt
`kb2
int[] temp=new int[data.length]; ECF \/12
mergeSort(data,temp,0,data.length-1); s
u)AIvF{
} }ikJa
|"XxM(Dm
private void mergeSort(int[] data, int[] temp, int l, int r) { E2a00i/9Y
int i, j, k; r%^J3
int mid = (l + r) / 2; @[(<oX%
if (l == r) "f-z3kL
return; 2h^9lrQcQG
if ((mid - l) >= THRESHOLD) I]OVzM
mergeSort(data, temp, l, mid); E]26a,^L
else b+qdl`Vd
insertSort(data, l, mid - l + 1); A-XWG9nL
if ((r - mid) > THRESHOLD) t:<dirw,o
mergeSort(data, temp, mid + 1, r); f*Dy>sw
else |)\{Rufb
insertSort(data, mid + 1, r - mid); 4_B1qN
BO3%p
for (i = l; i <= mid; i++) { KW5u.phv
temp = data; L4C_qb k;:
} :w5p#+/,P
for (j = 1; j <= r - mid; j++) { Rr0@F`"R
temp[r - j + 1] = data[j + mid]; r:*0)UZlD
} }xE}I<M
int a = temp[l]; =9@t6
int b = temp[r]; 7)y9%-}
for (i = l, j = r, k = l; k <= r; k++) { (hv>vfY@
if (a < b) { 5gnmRd
data[k] = temp[i++]; ;zc,vs
a = temp; ON~K(O2g(
} else { l{b*YUsz>
data[k] = temp[j--]; BvA09lK
b = temp[j]; DHnu F@M
} 3vK,vu q
} c5e
wG
} ;[>g(W+
J&bhR9sF
/** rBY{&JhS
* @param data I||4.YT
* @param l j(SBpM
* @param i uqMe%
*/ hR1n@/nh
private void insertSort(int[] data, int start, int len) { @<W^/D1#L
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); /K2=GLl;
} !<P|:Oo*Dl
} E6FT*}Q
}
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} ejuw+@ _
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堆排序: %]15=7#'y
5/>W(,5}
package org.rut.util.algorithm.support; [V-OYjPAx
{zf)im[.
import org.rut.util.algorithm.SortUtil; t/4&=]n\u
")cJA f
/** #mDeA >b
* @author treeroot &/7D4!N]
* @since 2006-2-2 7^|,l
* @version 1.0 ~&?{hd.
*/ (,5,}
public class HeapSort implements SortUtil.Sort{ QIg.r\>o
;}BDEBl
/* (non-Javadoc) NLLLt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O5:2B\B
*/ 2UF
,W]
public void sort(int[] data) { }j. [h;C6
MaxHeap h=new MaxHeap(); 6HyndB^
h.init(data); ">pt,QV
for(int i=0;i h.remove(); wC~ra:/?:7
System.arraycopy(h.queue,1,data,0,data.length); 4tb y N
} q0l=S+0
aN/0'V|&ym
private static class MaxHeap{ }wh
sZ
J"&jR7-9
void init(int[] data){ WLe9m02r
this.queue=new int[data.length+1]; 7Ib/Cm0d|
for(int i=0;i queue[++size]=data; }}g.L|
fixUp(size); V>YZ^>oeH
} \~#$$Q-qtU
} ;HOOo>%_K
%di]1vQ
private int size=0; zL<<`u?
[4_JK
private int[] queue; ;F;"Uw
)O~V3a
public int get() { nbGB84
return queue[1]; GkT:7`|C
} ~fDMzOd
N4wv'OrL]
public void remove() { <e
s>FD
SortUtil.swap(queue,1,size--); 0xe!tA
fixDown(1); bJz}\[z
} d\R]>
file://fixdown [9:'v@Ph
private void fixDown(int k) { D_HE!fl
int j; R6N+c\W
while ((j = k << 1) <= size) { Y}/e"mp
if (j < size %26amp;%26amp; queue[j] j++; NX?IM8\t
if (queue[k]>queue[j]) file://不用交换 b"t<B2N
break; kYVn4Wq
SortUtil.swap(queue,j,k); c~1X/,biA
k = j; z/,qQVv=}4
} pnvHh0ck_
} y$]gmg
private void fixUp(int k) { A@W/
while (k > 1) { WP@IV;i
int j = k >> 1; BDeX5/`U#
if (queue[j]>queue[k]) !&3iZQGWv
break; B4<W%lm
SortUtil.swap(queue,j,k); /%#LA
k = j; =`b/ip5
} eu]t.Co[X
} Ls<.&3X2
8+L,a_q-
} $ON4nx
[F^qa/vJ10
} :`9hgd/9
[BH^SvE
SortUtil: 2f%G`4/p
UogkQ& B
package org.rut.util.algorithm; jL|y4
g=*`6@_=
import org.rut.util.algorithm.support.BubbleSort; N34.Bt
import org.rut.util.algorithm.support.HeapSort; #SHmAB
import org.rut.util.algorithm.support.ImprovedMergeSort; Xm|Uz`A;
import org.rut.util.algorithm.support.ImprovedQuickSort; f1a >C
import org.rut.util.algorithm.support.InsertSort; _86#$|kw
import org.rut.util.algorithm.support.MergeSort; QEh_2
import org.rut.util.algorithm.support.QuickSort; Y4\BHFq
import org.rut.util.algorithm.support.SelectionSort; a cSm+t
import org.rut.util.algorithm.support.ShellSort; _?vh#6F
"!9hcv-;
/**
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* @author treeroot t3#My2 =
* @since 2006-2-2 \k#|[d5W
* @version 1.0 "k8Yc<`u
*/ kHO2&"6
public class SortUtil { wIrjWU2
public final static int INSERT = 1; qfO=_z ES
public final static int BUBBLE = 2; o)X(;o
public final static int SELECTION = 3; X>[x7t:
public final static int SHELL = 4; ^V
DJGBk
public final static int QUICK = 5; D# $Fj
public final static int IMPROVED_QUICK = 6; d 6$,iw@>^
public final static int MERGE = 7; ?e`4
sf_~
public final static int IMPROVED_MERGE = 8; %:v59:i}
public final static int HEAP = 9; }Htnhom0n
0{ZYYB&"~J
public static void sort(int[] data) { 'IorjR@40
sort(data, IMPROVED_QUICK); A`=;yD
} v^Eg ,&(
private static String[] name={ jRswGMx
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" *V\z]Dy-[
}; /Hox]r]'e
iqzl (9o.D
private static Sort[] impl=new Sort[]{ D 8nt%vy
new InsertSort(), -_m>C2$6x
new BubbleSort(), IL:d`Kbqf
new SelectionSort(), DFgr,~
new ShellSort(), 7x/S4Gs'4
new QuickSort(), nkKiYr
new ImprovedQuickSort(), bv.DW,l%'
new MergeSort(), j\^0BTZ
new ImprovedMergeSort(), KGMX >t'
new HeapSort() wq|~[+y
}; /5:f[-\s
/`M>3q[
public static String toString(int algorithm){ T;cyU9
return name[algorithm-1]; Wq bfZx
} g/)$-Z)Nu
}PZz(Ms
public static void sort(int[] data, int algorithm) { !Gv*iWg
impl[algorithm-1].sort(data); _(CuuP$`I
} %X)i-^T
\5+?wpH
public static interface Sort { k,EI+lC X
public void sort(int[] data); {U$qxC]M
} g$&uD
rAc
Yt9M#
public static void swap(int[] data, int i, int j) { Z_Gb9
int temp = data; MA:2]l3e
data = data[j]; )$V &Nf
data[j] = temp; kmJ{(y)w
} -ff|Xxar{
} h[5<S&