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。 6iH]N*]S^
插入排序: WL\*g] K4
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package org.rut.util.algorithm.support; vL;=qkTCQ
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import org.rut.util.algorithm.SortUtil; ?U*s H2F
/** ufA0H
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* @author treeroot 7Z81+I|&8
* @since 2006-2-2 iNn?G C>
* @version 1.0 J,`I>^G
*/ 4J[csU
public class InsertSort implements SortUtil.Sort{ M?ElD1#Z
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/* (non-Javadoc) kRiZ6mn
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2m&?t_W
*/ /w*HxtwFmD
public void sort(int[] data) { @]],H0
int temp; M!PK3
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); HN&]`cr;
} o107. s
} $A: ?o?"7}
} $fW8S8
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} .m%ygoO
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冒泡排序: 0gKSjTqo
Xu{S4#1
package org.rut.util.algorithm.support; ,z$U=uo
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import org.rut.util.algorithm.SortUtil; ixF
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/** 7<F{a"5P
* @author treeroot 1~*JenV-
* @since 2006-2-2 %bTXu1
* @version 1.0 *&F~<HC2+
*/ QnH~'
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public class BubbleSort implements SortUtil.Sort{ I9cZZ`vs
8{-bG8L> 5
/* (non-Javadoc) !R$t>X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3.04Toq!
*/ [sG!|@r
public void sort(int[] data) { HD}3mP
int temp; l]P3oB}Yo
for(int i=0;i for(int j=data.length-1;j>i;j--){ *3y:Wv T>
if(data[j] SortUtil.swap(data,j,j-1); 1ZfhDtK(
} 1,sD'iNb
} @0%^\Qf2
} x#tP)5n?s*
} &PEw8: TX
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} g
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选择排序: x):h|/B
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package org.rut.util.algorithm.support; .\AbE*lZ#
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import org.rut.util.algorithm.SortUtil; =q*j". <
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/** G~\=:d=^,`
* @author treeroot )}R
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* @since 2006-2-2 nOUF<DNQ
* @version 1.0 !\1Pu|
*/ k*= #XbX
public class SelectionSort implements SortUtil.Sort { @RI\CqFHR
~YrO>H` B
/* 'sTMUPg`
* (non-Javadoc) *8xMe
*
1"} u51
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %>k$'UWzK
*/ 5]@"f/
public void sort(int[] data) { ;PX>] r5U0
int temp; Q2!vO4!<N
for (int i = 0; i < data.length; i++) { >[gNQJ6
int lowIndex = i; sJ)Pj?"\?
for (int j = data.length - 1; j > i; j--) { g
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if (data[j] < data[lowIndex]) { Ba]^0Y
u
lowIndex = j; z]
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} R9lb<`
} Z\*jt B:
SortUtil.swap(data,i,lowIndex); c{K[bppJ*
} $<s
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} 8Ir
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} Ln5g"g8gb%
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Shell排序: W%^;:YQ9i
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package org.rut.util.algorithm.support; +HNM$yp
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import org.rut.util.algorithm.SortUtil; InR/g@n+D1
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/** JQ]A"xTIa*
* @author treeroot WkR=(dss8
* @since 2006-2-2 )Fh5*UC
* @version 1.0 \L{V|}"X
*/ q <Zza
public class ShellSort implements SortUtil.Sort{ k'JfXrW<!
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/* (non-Javadoc) |jE0H!j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8P3"$2q
*/ 5]yby"Z?}
public void sort(int[] data) {
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for(int i=data.length/2;i>2;i/=2){ eUE(vn#
for(int j=0;j insertSort(data,j,i); '?MT"G
} $^j#z^7
} /L? ia
insertSort(data,0,1); rRzc"W}K+
} OtFGo8
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/** zsuXN *
* @param data wW+@3bPl
* @param j $z5
* @param i eJwHeG
*/ *3]_Huw<
private void insertSort(int[] data, int start, int inc) { vX/("[
int temp; 8xN+LL'T{
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ]:r6
} rGb<7b%
} tDIQ=
} d/Y#oVI
}MXC0Z~si
} A
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快速排序: wPrqFpf
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package org.rut.util.algorithm.support; #:LI,t
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import org.rut.util.algorithm.SortUtil; %d"d<pvx
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/** 5>u,Qh
* @author treeroot #9ZHt5T=$
* @since 2006-2-2 x|lX1Mh$
* @version 1.0 }*9mNE
*/ \olYv!f
public class QuickSort implements SortUtil.Sort{ I$w:qS&:
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/* (non-Javadoc) X/' t1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w=feXA3-S
*/ /@QPJ~%8Ud
public void sort(int[] data) { {kNV|E
quickSort(data,0,data.length-1); N(=Z4Nk5
} ap|$8G
private void quickSort(int[] data,int i,int j){ T_/ n#e
int pivotIndex=(i+j)/2; 1E]TH/JK
file://swap * faG0le
SortUtil.swap(data,pivotIndex,j); <Po$|$_~
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int k=partition(data,i-1,j,data[j]); c1aIZ
SortUtil.swap(data,k,j); KO3X)D<3
if((k-i)>1) quickSort(data,i,k-1); GLtd6; V
if((j-k)>1) quickSort(data,k+1,j);
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} ]L{diD2G
/** )]M,OMYq-
* @param data K|sk]2.
* @param i Vc*"Q8aZ~
* @param j zSo(+ D
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* @return U~1)a(Yu;
*/ )
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private int partition(int[] data, int l, int r,int pivot) { g`\5!R1
do{ `b?o%5V2x
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); S}/5W
SortUtil.swap(data,l,r); !M@jW[s
} PB(I3R9
while(l SortUtil.swap(data,l,r); _`.Wib+
return l; Ev>P|kV&A
} @
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} ;(r,;S_`0
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改进后的快速排序: !j%MN{#a
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package org.rut.util.algorithm.support; kr>4%Ndm7
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import org.rut.util.algorithm.SortUtil; V
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/** i#bcjH
* @author treeroot 45A|KaVpg
* @since 2006-2-2 gJBw6'Z
* @version 1.0 v+(-\T\i
*/ pPsT,i?
public class ImprovedQuickSort implements SortUtil.Sort { ~1:_wni
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\--=;
private static int MAX_STACK_SIZE=4096; yIYQ.-DkS+
private static int THRESHOLD=10; _?v&\j
/* (non-Javadoc) W:8pmI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Kw=][}d`D
*/ )}lO%B'K
public void sort(int[] data) { ^?5HagA
int[] stack=new int[MAX_STACK_SIZE]; H7%q[O
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int top=-1; 8/T[dn
int pivot; ;u;_\k<qK
int pivotIndex,l,r; 7_ s7);
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stack[++top]=0; .H
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stack[++top]=data.length-1; zS*vKyye>
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while(top>0){ +vt?3i\^.
int j=stack[top--]; :hTmt{LjN
int i=stack[top--]; 2@,rIve
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pivotIndex=(i+j)/2; i5cK5MaD
pivot=data[pivotIndex]; j:E3c\a
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SortUtil.swap(data,pivotIndex,j); @Y !Jm
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file://partition Q6;bORN
l=i-1; =$SvKzN
r=j; V 5D8z
do{ QjOY1Xze
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); . ZP$,
SortUtil.swap(data,l,r); lk.Mc6)
} bT15jNa
while(l SortUtil.swap(data,l,r); u0F{.fe
SortUtil.swap(data,l,j); MO%+rf0~w
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if((l-i)>THRESHOLD){ 089v;
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stack[++top]=i; 'U-8w@\Z
stack[++top]=l-1; _%G;^ b
}
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if((j-l)>THRESHOLD){ 5a&BgBO1M
stack[++top]=l+1; zl<D"eP
stack[++top]=j; <:4b4Nl
} SZvp%hS0
[ J4n%
} CsEU:v
file://new InsertSort().sort(data); A|YiSwyy
insertSort(data); _*ar\A`
} XhUVDmeUMb
/** XtqhK"f%
* @param data OlP1Zd/l
*/ q$PO.#
private void insertSort(int[] data) { {F;"m&3Lt
int temp; {r%T_BfY
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); '^`iF,rg
} wZVLpF+7
} XT?wCb41R
}
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7(d#zu6n
} yz"hU
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归并排序: ZCuo YE$g
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package org.rut.util.algorithm.support; kB.CeG]tk
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import org.rut.util.algorithm.SortUtil; 2~R%_r+<
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/** wjXv{EsMq
* @author treeroot #v; :K8
* @since 2006-2-2 !v8](UI8-
* @version 1.0 qu&p)*M5
*/ $]rC-K:Z
public class MergeSort implements SortUtil.Sort{ NQA2usb
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/* (non-Javadoc) B(f_~ ]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +j %y#_~
*/ kbo9nY1k
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public void sort(int[] data) { &?}A/(#
int[] temp=new int[data.length]; ~C>clkZ
mergeSort(data,temp,0,data.length-1); rv`GOta*
} H@b4(6
nok-![
private void mergeSort(int[] data,int[] temp,int l,int r){ "'C5B>qO
int mid=(l+r)/2; 9h/Hy aN
if(l==r) return ; .>Qa3,v5
mergeSort(data,temp,l,mid); v#EFklOP
mergeSort(data,temp,mid+1,r); [8Fn0A
for(int i=l;i<=r;i++){ ?aI.Z+#
temp=data; M:dH>
} !f]kTs]j~
int i1=l; BS
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int i2=mid+1; T;]Ob3(BpW
for(int cur=l;cur<=r;cur++){ `"o{MaFA
if(i1==mid+1) virt[5w
data[cur]=temp[i2++]; (\'$$
else if(i2>r) zp5ZZcj_
data[cur]=temp[i1++]; ZL:SJ,C
else if(temp[i1] data[cur]=temp[i1++]; e]5NA?2j
else ^$X|Lq
data[cur]=temp[i2++]; {u+=K-Bj
} [.}Uzx
} j#xGB]
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} 10)RLh|+
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改进后的归并排序: 'rTJ*1i
GaV} @Q
package org.rut.util.algorithm.support; hxMV?\MYj
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import org.rut.util.algorithm.SortUtil; i[ >U#5
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/** fzA Fn$[
* @author treeroot y` {|D*
* @since 2006-2-2 bDm7$ (
* @version 1.0 F`GXho[
*/ *tv\5KW G
public class ImprovedMergeSort implements SortUtil.Sort { G4rzx%W?
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private static final int THRESHOLD = 10; PT
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/* !8D>Bczq)
* (non-Javadoc) 7&9w_iCkV
* CO9PQ`9+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?rA3<j
*/ Eg8b|!-')8
public void sort(int[] data) { q6 ny2;/r
int[] temp=new int[data.length]; Zd88+GS,#
mergeSort(data,temp,0,data.length-1); #kh:GAp]
} p<z eaf0W
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private void mergeSort(int[] data, int[] temp, int l, int r) { {9X mFa
int i, j, k; !Z
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int mid = (l + r) / 2; s 0_*^cZ
if (l == r) (> _Lb
return; |rG)Q0H,
if ((mid - l) >= THRESHOLD) !dUdz7
mergeSort(data, temp, l, mid); EeT69o
else gwdAf%|f
insertSort(data, l, mid - l + 1); Pouo# 5
if ((r - mid) > THRESHOLD) 1)jeawVmj
mergeSort(data, temp, mid + 1, r); `SOQPAnK+;
else RRpY%-8M
insertSort(data, mid + 1, r - mid); \yZVn6GVr
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for (i = l; i <= mid; i++) { 3%Eu$|B
temp = data; :U *8S\$
} n#}~/\P6
for (j = 1; j <= r - mid; j++) { ^#Mp@HK
temp[r - j + 1] = data[j + mid]; N/ '
} cTS.yN({G
int a = temp[l]; \#WWJh"W
int b = temp[r]; jvAjnh#
for (i = l, j = r, k = l; k <= r; k++) { ;]b4O4C\
if (a < b) { TLp2a<Iy
data[k] = temp[i++]; Z4c'1-lh
a = temp; /qMnIo
} else { y:^o._
data[k] = temp[j--]; /]_|uN)Q
b = temp[j]; j"hEs(t
} S3i p?9
} #oFyi @U
} YM6
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/** )QRT/, ;c
* @param data }mzd23^W>P
* @param l idGn{f((f
* @param i `/'p1?Z"
*/ 1G.?Y3DC<
private void insertSort(int[] data, int start, int len) { ^1vKhO+p$
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); UP$>,05z6
} F_9
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} rfYa<M Qc
} lS#:u-k
} &M@c50&%
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堆排序: #z
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package org.rut.util.algorithm.support; 9<&M~(dwT4
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import org.rut.util.algorithm.SortUtil; CLk,]kA'r
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/** X7AxI\h
* @author treeroot WcoA)we
* @since 2006-2-2 KvEv0L<ky
* @version 1.0 7s3=Fa:9Q
*/ iw=e"6V
public class HeapSort implements SortUtil.Sort{ sNcU>qjj6
6W{Nw<
/* (non-Javadoc) +Ugy=678Tr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >
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*/ Bpm COA
public void sort(int[] data) { 24k]X`/n
MaxHeap h=new MaxHeap(); tgl(*[T2
h.init(data); oA@M =
for(int i=0;i h.remove(); y<w_>O
System.arraycopy(h.queue,1,data,0,data.length); uR{)%udu
} :aomDK*
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private static class MaxHeap{ R`E:`t4G
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void init(int[] data){ `B4Ilh"d
this.queue=new int[data.length+1]; ~3M8"}X;L
for(int i=0;i queue[++size]=data; {6GX
?aw'
fixUp(size); "igA^^?X1N
} 1 :$#a
} )^AZmUYZ
\8!CKnfs
private int size=0;
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private int[] queue; Z37Dv;&ZD
- _8-i1?
public int get() { *?d\Zcj85[
return queue[1]; q~
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} A{J?I:
^)Awjj9
public void remove() { Yl>Y.SO
SortUtil.swap(queue,1,size--); ;tVd+[8
fixDown(1); r7g@(K
} "yh2+97l
file://fixdown /g!ZU2&l
private void fixDown(int k) { xvl{o
int j; #n{4f1TZ
while ((j = k << 1) <= size) { @s
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if (j < size %26amp;%26amp; queue[j] j++; " "m-5PGYo
if (queue[k]>queue[j]) file://不用交换 9
@ <
break; d^nO&it
SortUtil.swap(queue,j,k); t0e5L{ QJ
k = j; ui,!_O .c
} IqFcrU$4
} I:/|{:5
private void fixUp(int k) { A+8)VlE\
while (k > 1) { "{qnm+G
int j = k >> 1; "qF/7`e[
if (queue[j]>queue[k]) \wsVO"/
break; 2wB*c9~
SortUtil.swap(queue,j,k); %L-qAI&V
k = j; /CO=!*7fz
} L&)e}"
} hZ452W
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} , +J)`+pJx
k<Gmb~Tg1
} .=Oww
A03io8D6
SortUtil: EjFpQ|-L|
Vm\zLWNB
package org.rut.util.algorithm; ukEJ D3i
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import org.rut.util.algorithm.support.BubbleSort; g[1>|Ax`'
import org.rut.util.algorithm.support.HeapSort; ]?H12xz
import org.rut.util.algorithm.support.ImprovedMergeSort; -K?lhu
import org.rut.util.algorithm.support.ImprovedQuickSort; ^*`#+*C
import org.rut.util.algorithm.support.InsertSort; CN ( :
import org.rut.util.algorithm.support.MergeSort; 0Zwx3[bq6K
import org.rut.util.algorithm.support.QuickSort; qhvT,"
import org.rut.util.algorithm.support.SelectionSort; 3{|~'5*
import org.rut.util.algorithm.support.ShellSort; 1!G}*38;
1}Q9y`65
/** ; 8DtnnE
* @author treeroot BRM `/s
* @since 2006-2-2 {g1"{
* @version 1.0 Ul/m]b6-
*/ \1joW#
public class SortUtil { 9%|skTgIqH
public final static int INSERT = 1; dWkQ NFKF
public final static int BUBBLE = 2; 'A.5T%n-
public final static int SELECTION = 3; (>A#|N1U
public final static int SHELL = 4; [(_,\:L${
public final static int QUICK = 5; ,)*[Xa_n
public final static int IMPROVED_QUICK = 6; aWJ
BYw6{L
public final static int MERGE = 7; PkyX,mr#1
public final static int IMPROVED_MERGE = 8; i&lW&]
public final static int HEAP = 9; 68h1Wjg:"!
4hxP`!<
public static void sort(int[] data) { S-o)d
sort(data, IMPROVED_QUICK); P HOngn
} {
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private static String[] name={ Hy\q{
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" `.O$RwC&7B
}; FWW@t1)
/iM1
private static Sort[] impl=new Sort[]{ G\MeJSt*
new InsertSort(), K;"oK
new BubbleSort(),
0LL65[
new SelectionSort(), V6[jhdb
new ShellSort(), )@I] Rk?
new QuickSort(), +C7E]0!r
new ImprovedQuickSort(), pXl qE,
new MergeSort(), m-\_L=QzM
new ImprovedMergeSort(), GB}\ 7a
new HeapSort() HAI)+J
}; %vy,A*
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public static String toString(int algorithm){ f/8&-L
return name[algorithm-1]; &x\)] i2f
} nTo?~=b
IFew3!{\
public static void sort(int[] data, int algorithm) { goyDG/
impl[algorithm-1].sort(data); U4-RI]Cpf
} $$.q6
,.(:b82$
public static interface Sort { 5lD`qY
public void sort(int[] data); YHom9&A
} }]dzY(
1+-Go}I
public static void swap(int[] data, int i, int j) { Kgi`@`
int temp = data; 7J5jf231
data = data[j]; eDP&W$s#
data[j] = temp; 12'MzIsU's
} ,N,@9p
} o:ow"cOEf