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。 F`YxH*tO7
插入排序: gb/M@6/j
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package org.rut.util.algorithm.support; JSm3ZP|GqJ
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import org.rut.util.algorithm.SortUtil; QYTwGThWR
/** U9p^?\-=
* @author treeroot _a,XL<9 I
* @since 2006-2-2 hKW!kA=gZ
* @version 1.0 {:9P4<%H
*/ z?8Sie
public class InsertSort implements SortUtil.Sort{ 6 _\j_$
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/* (non-Javadoc) b`sph%&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '$n#~/#}
*/ >jDx-H.N
public void sort(int[] data) { LlG~aGhel
int temp; & A<Pf.Us
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7'xds
} }~28UXb23
} S+YbsLf
} ~cEr<mzR
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} kpN'H_ .
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冒泡排序: 3
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package org.rut.util.algorithm.support; ba
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import org.rut.util.algorithm.SortUtil; sIJ37;ZA
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/** dO[w3\~
* @author treeroot 'u2Qq"d+
* @since 2006-2-2 Sm%MoFf
* @version 1.0 2tqO%8`_
*/ QYL
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public class BubbleSort implements SortUtil.Sort{ BO p&s>hI
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/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q}["Nww-
*/ 4n@,
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public void sort(int[] data) { ZWJFd(6
int temp; (7rG~d1iS
for(int i=0;i for(int j=data.length-1;j>i;j--){ lFY;O !Y5\
if(data[j] SortUtil.swap(data,j,j-1); f V.(v&
} c};Qr@vpo
} O({-lI
} hD/bO
} ~U~4QQ V
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} HiG&`:P>q
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选择排序: :q4Mnr
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package org.rut.util.algorithm.support; i4"xvLK4
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import org.rut.util.algorithm.SortUtil; a|\_'#
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/** \0pJ+@\T9
* @author treeroot WiL~b
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* @since 2006-2-2 5aTyM_x
* @version 1.0 O ,[aL;v
*/ dR_hPBn/@
public class SelectionSort implements SortUtil.Sort { w`VmN}pR
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/* k>Qr14F
* (non-Javadoc) $sO}l
* 7j&l2Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <_H0Q_/(
*/ W3K"5E0ck
public void sort(int[] data) { YAZ=-@]`\
int temp; R#bg{|
for (int i = 0; i < data.length; i++) { o=_4v^
int lowIndex = i; <..%@]+
for (int j = data.length - 1; j > i; j--) { |[|X
if (data[j] < data[lowIndex]) { 'F+O+-p+
lowIndex = j; /7h%sCX
} MT#9x>
} nZN]Q9
SortUtil.swap(data,i,lowIndex); TR@$$RrU
} "O|fX\}5
} N2tvP+Z6D
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} @Cm"lv.hz
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Shell排序: vVLR9"rHM
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package org.rut.util.algorithm.support; cVn7jxf
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import org.rut.util.algorithm.SortUtil; )11/BB\v
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/** NnSI=M
* @author treeroot uW[s?
* @since 2006-2-2 c e=6EYl
* @version 1.0 miHW1h[=
*/ zAB-kE\)
public class ShellSort implements SortUtil.Sort{ [;5HI'px
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/* (non-Javadoc) M7,|+W/RK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +U%lWE%
*/ =GM!M@~,Ab
public void sort(int[] data) { HA"dw2|
for(int i=data.length/2;i>2;i/=2){ ZLKS4
for(int j=0;j insertSort(data,j,i); <WBGPzVZE
}
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} +I\bs.84
insertSort(data,0,1); ?67j+)
} &[\rnJ?D
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/** o
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* @param data +bf%]
* @param j 9f,HjRP
* @param i E4y"$U%.
*/ ! 2Y,
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private void insertSort(int[] data, int start, int inc) { |Be.r{l
int temp; -R7f/a8
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); R?|_`@@A
} [EGE|
} $X*$,CCIB
} u{p\8v%7
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} JBUJc
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快速排序: <O\z`aA'q
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package org.rut.util.algorithm.support; *%)L?*
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import org.rut.util.algorithm.SortUtil; 4?yc/F=kI
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/** )s=z i"
* @author treeroot ,CM$A}7[
* @since 2006-2-2 Tu/JhP/g,`
* @version 1.0 B~PF <8h5
*/ "F[VqqD
public class QuickSort implements SortUtil.Sort{ l1W5pmhK]'
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/* (non-Javadoc) 6o1.?t?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [[s k
*/ Y?%6af+
public void sort(int[] data) { T.`%1S
quickSort(data,0,data.length-1); U5H o? `<
} >MP PYVn7
private void quickSort(int[] data,int i,int j){ O&w$
int pivotIndex=(i+j)/2; wH${q@z _
file://swap 06Hn:IT18
SortUtil.swap(data,pivotIndex,j); 3&?Tc|F+
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int k=partition(data,i-1,j,data[j]); vCpi|a_eCu
SortUtil.swap(data,k,j); am"/Anml|
if((k-i)>1) quickSort(data,i,k-1); .PAkW2\#
if((j-k)>1) quickSort(data,k+1,j); uqO51V~
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} s9 E:6
/** .ySesN: C~
* @param data Bgs~1E @8V
* @param i 3.dUMJ$_
* @param j @JEr/yy
* @return
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*/ T:!sfhrZ~<
private int partition(int[] data, int l, int r,int pivot) { ,<vrDHR
do{ "]N QTUb;
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); $Jr`4s
SortUtil.swap(data,l,r); nO|S+S_9
} zA"D0fr
while(l SortUtil.swap(data,l,r); Q^p@ 1I
return l; +tV(8h4
} UxS;m4
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} =AKW(v
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改进后的快速排序: +p cj8K%
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package org.rut.util.algorithm.support; %cm5Z^B1"
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import org.rut.util.algorithm.SortUtil; .y\HQ^j
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/** rL,)Tc|"
* @author treeroot ;Q"F@v}18
* @since 2006-2-2 (%P* rl
* @version 1.0 `r iv`+J{s
*/ H_AV 3
;
public class ImprovedQuickSort implements SortUtil.Sort { VG8rd'Z
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private static int MAX_STACK_SIZE=4096; |@@mq!>-
private static int THRESHOLD=10; ./fEx
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/* (non-Javadoc) C3b'Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y\S7oD(OR
*/ 5~44R@`
public void sort(int[] data) { )Xh_q3=
int[] stack=new int[MAX_STACK_SIZE]; 5PPy+36<~
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int top=-1; gOWyV@
int pivot; mhVoz0%1X
int pivotIndex,l,r; @"/}Al
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stack[++top]=0; P5d@-l%}
stack[++top]=data.length-1; $@Ay0GEI"
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while(top>0){ I+CQ,Zuf
int j=stack[top--]; $3[cBX.=
int i=stack[top--]; a:|4q
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pivotIndex=(i+j)/2; GY",AL8f
pivot=data[pivotIndex]; fhY[I0;}$
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SortUtil.swap(data,pivotIndex,j); n% `r
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file://partition p;7 4+q
l=i-1; |O)deiJRy
r=j; _eQP0N
do{ 4y1>!~f
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); t@u\ 4bv
SortUtil.swap(data,l,r); cyhD%sB[D9
} vaf9b}FL
while(l SortUtil.swap(data,l,r); ,SyUr/D
SortUtil.swap(data,l,j); C}h@ El
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if((l-i)>THRESHOLD){ '<0q"juXE
stack[++top]=i; C^%zV>o
stack[++top]=l-1; `es($7}P_W
} lz)"zV
if((j-l)>THRESHOLD){ Z8&C-yCC
stack[++top]=l+1; =_'cG:=)
stack[++top]=j; [\b_+s)eN
} Z0=m:h
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} *!'&:
file://new InsertSort().sort(data); @g75T` N
insertSort(data); Hk]BC
} s3M84w z
/** u!uDu,y
* @param data u3wC}Zo
*/ 5ZA%,pH>Jq
private void insertSort(int[] data) { 1qC:3
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int temp; ~B&*7Q7
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Nr"N\yOA/
} UNQRtR/
} #eC;3Kq#-
} w"v'dU^
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} ^Q=y^fx1
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归并排序: Fd[h9 G
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package org.rut.util.algorithm.support; Tj=dL
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import org.rut.util.algorithm.SortUtil; &^IcL!t[
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/** p%"yBpSK
* @author treeroot atf%7}2
* @since 2006-2-2 Iv(Qa6(
* @version 1.0 %kx
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*/ D4q>R;
public class MergeSort implements SortUtil.Sort{ C6d]tLE
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/* (non-Javadoc) |:9Ir^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GzFE%< 9F
*/ /u)Rppu
public void sort(int[] data) { v'@b. R,
int[] temp=new int[data.length]; =x^l[>sz
mergeSort(data,temp,0,data.length-1); qon{
g
} u<]mv
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private void mergeSort(int[] data,int[] temp,int l,int r){ VD24X
int mid=(l+r)/2; poD\C;o"
if(l==r) return ; d9Z&qdxTKq
mergeSort(data,temp,l,mid); _(6`{PWY
mergeSort(data,temp,mid+1,r); 90s;/y(
for(int i=l;i<=r;i++){ T|@#w%c''
temp=data; %5h^`lp
} %f(S'<DhC
int i1=l; JzMZB"Z?
int i2=mid+1; pDq#8*q+v
for(int cur=l;cur<=r;cur++){ lRDxIuTK
if(i1==mid+1) YZGS-+
data[cur]=temp[i2++]; 2L2 VVO
else if(i2>r) 1n'$Ji7
data[cur]=temp[i1++]; #SQvXMT
else if(temp[i1] data[cur]=temp[i1++]; &Vt2be*
else &xiOTkqB
data[cur]=temp[i2++]; s=N#CE
} #, Q}NO#vT
} /2e%s:")h
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} 2QGMe}
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改进后的归并排序: wmo{YS3t|
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package org.rut.util.algorithm.support; W|dpFh`
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import org.rut.util.algorithm.SortUtil; MBB5wj
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/** s>|Z7[*
* @author treeroot 4.|-m.a
* @since 2006-2-2 S
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* @version 1.0 =4tO0
*/ c^=R8y-N
public class ImprovedMergeSort implements SortUtil.Sort { ~uI**{
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private static final int THRESHOLD = 10; yGiP[d|tRc
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/* (=1q!c`
* (non-Javadoc) $n= O
* ZXsYn
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dEASvD'
*/ lC#RNjDp/~
public void sort(int[] data) { G02ox5X
int[] temp=new int[data.length]; q2e]3{l3
mergeSort(data,temp,0,data.length-1); bj@xqAGl
} Q,.By&
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private void mergeSort(int[] data, int[] temp, int l, int r) { <EMkD1e
int i, j, k; =m}TU)4.
int mid = (l + r) / 2; I>A^I
if (l == r) ]gu1#
return; n]+.
if ((mid - l) >= THRESHOLD) ;XG]Q<S\
mergeSort(data, temp, l, mid); BhKO_wQ?:J
else L=,OZ9aA
insertSort(data, l, mid - l + 1); }Y Q:6I
if ((r - mid) > THRESHOLD) &=6%>
mergeSort(data, temp, mid + 1, r); <cYp~e%xIw
else .f>,6?
insertSort(data, mid + 1, r - mid); Dg~
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for (i = l; i <= mid; i++) { |;P^clS3
temp = data; 8xgJSk
} q]^,vei
for (j = 1; j <= r - mid; j++) { pOMgEEhfS
temp[r - j + 1] = data[j + mid]; _J,xT
} flG=9~qcGQ
int a = temp[l]; 2MuO*.9D
int b = temp[r]; ga-{!$b*
for (i = l, j = r, k = l; k <= r; k++) { tBseqS3<
if (a < b) { OX+hZ<y
data[k] = temp[i++]; 6lsL^]7
a = temp; *>k!hq;j
} else { $A`xhh[
data[k] = temp[j--]; %e{(twp
b = temp[j]; f=o4I2Y[
} <Nex8fiJ9
} pI>*u ]x
} "u;YI=+
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/** JSgpb?(
* @param data FI{AZb_'
* @param l HT"gT2U+
* @param i xW>ySEf
*/ lkA^\+Ct
private void insertSort(int[] data, int start, int len) { Cxm6TO`-;
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); xuUx4,Z
} S[mM4et|
} gg[9u-
} D`VFf\7
} Vclr2]eV4O
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堆排序: "jR]MZ
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package org.rut.util.algorithm.support; P16YS8$
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import org.rut.util.algorithm.SortUtil; 5Z{_m;I.
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/** ;,XyN+2H
* @author treeroot ;/'|WLI9
* @since 2006-2-2 =Vb~s+YW
* @version 1.0 q[ULGv
*/ .:y5U}vR
public class HeapSort implements SortUtil.Sort{ ^s{hs(8%R
:p>hW!~
/* (non-Javadoc) O*G1 QX
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l~J*' m2
*/ IU#x[P!
public void sort(int[] data) { 5ZK&fKeCF
MaxHeap h=new MaxHeap(); d~@q%-`lA
h.init(data); /r^[a,Q#x
for(int i=0;i h.remove(); b9Y_!Qe
System.arraycopy(h.queue,1,data,0,data.length); - $JO8'TP
} >w.'KR0L
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private static class MaxHeap{ c@R; /m:R
\a))
void init(int[] data){ uZIJoT
this.queue=new int[data.length+1]; )(m0cP{7
for(int i=0;i queue[++size]=data; 5mgHlsDzu
fixUp(size); y-B=W]E
} *C6 D3y
} :#u}.G
r_U>VT^E:
private int size=0; uS<_4A;sD,
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private int[] queue; p|qyTeg
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public int get() { rh%m;i<b
return queue[1]; 3o6RbW0[
} |P~;C6sf
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public void remove() { i sW\MB]
SortUtil.swap(queue,1,size--); pQWHG#?7
fixDown(1); #NN ewzC<*
} NfzF.{nh
file://fixdown =o^|b ih
private void fixDown(int k) { WeMAe
w/d
int j; R7?29?$7
while ((j = k << 1) <= size) { |`O7nOM
if (j < size %26amp;%26amp; queue[j] j++; `rb>K
if (queue[k]>queue[j]) file://不用交换 Dl C@fZD
break; ".U^ifF
SortUtil.swap(queue,j,k); riCV&0"n
k = j; WE6\dhJ<
} }Ln@R~[
} ~/-eyxLTm
private void fixUp(int k) { -rSIBc:$8
while (k > 1) { {fDTSr?/
int j = k >> 1; vF4]ux&
if (queue[j]>queue[k]) 7G93,dJ
break; j9R6ta3\l
SortUtil.swap(queue,j,k); `tEo]p
k = j; ^G1%6\We
} 4n0xE[-
} /)>S<X
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} lr@#^
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9RM
} o[\HOe~;
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SortUtil: $m| V :/
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package org.rut.util.algorithm; <a^Oj LLU
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import org.rut.util.algorithm.support.BubbleSort; [A2`]CE<@
import org.rut.util.algorithm.support.HeapSort; (Ddp|a"b
import org.rut.util.algorithm.support.ImprovedMergeSort; .12aUXo(
import org.rut.util.algorithm.support.ImprovedQuickSort; </"4 zD|
import org.rut.util.algorithm.support.InsertSort; $_;e>*+x
import org.rut.util.algorithm.support.MergeSort; 1wj:aD?g
import org.rut.util.algorithm.support.QuickSort; /JJw 6[N
import org.rut.util.algorithm.support.SelectionSort; n,'OiVl[
import org.rut.util.algorithm.support.ShellSort; h9s >LY
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/** '0RwO[A#1
* @author treeroot G"SBYU
* @since 2006-2-2 {zLhiUH
a0
* @version 1.0 3ec`Wa
*/ iw9Q18:I}
public class SortUtil { 5F"|E-;
public final static int INSERT = 1; B4Y(?JTx
public final static int BUBBLE = 2; #*%q'gyHT
public final static int SELECTION = 3; tY|8s]{2
public final static int SHELL = 4; ~x:DXEV,
public final static int QUICK = 5; w.{&=WTr
public final static int IMPROVED_QUICK = 6; v-b0\_
public final static int MERGE = 7; lUOvm\
public final static int IMPROVED_MERGE = 8; $md%xmQ[
public final static int HEAP = 9; c=O,;lWFqm
w'T q3-%V
public static void sort(int[] data) { -~{c
u47_
sort(data, IMPROVED_QUICK); z+{,WHjo
} / |r'
private static String[] name={ .="bzgC3A
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 9!',b>C6
};
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XOP"Px@
private static Sort[] impl=new Sort[]{ / ~%KVe
new InsertSort(), .Pndx%X9s
new BubbleSort(), Jju#iwb
new SelectionSort(), \nNXxTxX!
new ShellSort(), dihjpI_
new QuickSort(), |SZo'
6
new ImprovedQuickSort(), tRb]7 z
new MergeSort(), 1{x.xi"A/
new ImprovedMergeSort(), SLL3v,P(7
new HeapSort() /1UOT\8U
}; \Q?ip&R
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public static String toString(int algorithm){ LpbsYl
return name[algorithm-1]; v X~RP
*
} $ ,Ck70_
mEG6
public static void sort(int[] data, int algorithm) {
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impl[algorithm-1].sort(data); n.MRz WJpZ
} gmKGy@]
HSUI${<
public static interface Sort { 0oZsb\
public void sort(int[] data); g#]" hn
} 3f.b\4 U
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public static void swap(int[] data, int i, int j) { C*=Xk/0
int temp = data; _9 .(a
data = data[j]; r|Z3$J{^"
data[j] = temp; `:8J46or
} pIV-kI:w
} olB)p$aH#