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。 LbV]JP
插入排序: 'hlB;z|T
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package org.rut.util.algorithm.support; *2Vp4
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import org.rut.util.algorithm.SortUtil; kh?#={]Z
/** ui56<gI-
* @author treeroot PF'5z#] NP
* @since 2006-2-2 1&% d
* @version 1.0 Y!a+#N!
*/
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public class InsertSort implements SortUtil.Sort{ t$y&=v
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/* (non-Javadoc) lNaez3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ie2w0Cs28
*/ .hQ3A"
public void sort(int[] data) { CFBUQMl>
int temp; GIC"-l1\
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Y-%l7GErhL
} pKxX{i1l
} c#n4zdQd]5
} /+4^.Q*
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} Z9"{f)T
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冒泡排序: KO-Zz&2f
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package org.rut.util.algorithm.support; -; us12SZ
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import org.rut.util.algorithm.SortUtil; tIxhSI^
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/** npO@Haw
* @author treeroot i9&K
* @since 2006-2-2 Ho )t=qn
* @version 1.0 &N/|(<CB
*/ ~^rey
public class BubbleSort implements SortUtil.Sort{ lTV@b&
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/* (non-Javadoc) NoJnchiU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &h7smZO5j
*/ _@#uIOcE
public void sort(int[] data) { _OJ0 < {E
int temp; '<?v:pb9
for(int i=0;i for(int j=data.length-1;j>i;j--){ ]^*_F
if(data[j] SortUtil.swap(data,j,j-1); QH7V_#6bKP
} Jb3>vCIn
}
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} J|gdO+
} A*\o
c
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} IS,zy+w
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选择排序: j}rgOz.
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package org.rut.util.algorithm.support; <pTQpU
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import org.rut.util.algorithm.SortUtil; aPD?Bh>JU
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/** ZL4l
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* @author treeroot n0+g]|a
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* @since 2006-2-2 g[#k.CuP
* @version 1.0 9tzoris[~
*/ }zkL[qu;
public class SelectionSort implements SortUtil.Sort { ig{A[7qN
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/* qs6Nb'JvQR
* (non-Javadoc) C2+{U
* ?(5o@Xq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U6c)"^\
*/ j>$=SMc
public void sort(int[] data) { pau*kMu^}
int temp; vF9*tK'
for (int i = 0; i < data.length; i++) { n9]IBIthe
int lowIndex = i; OLk9A
for (int j = data.length - 1; j > i; j--) { 3)6+1Yc
if (data[j] < data[lowIndex]) { %^a]J"Ydi8
lowIndex = j; F5FNhuC
} Zz"I.$$[M
} 0V<Aub[${
SortUtil.swap(data,i,lowIndex); x r-;,W
} _7Xd|\Zc
} ZB~l2
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} "%{,T
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Shell排序: ZhhI@_sz
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package org.rut.util.algorithm.support; 5~@?>)TBv
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import org.rut.util.algorithm.SortUtil; [3t0M5x w
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/** lo cW_/
* @author treeroot 0zg 2g!lh
* @since 2006-2-2 y]yine
* @version 1.0 jMN)?6$=
*/ y=[gQJ6~r
public class ShellSort implements SortUtil.Sort{ lq:]`l,6@
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/* (non-Javadoc) /Jh1rck
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i/NDWVFD
*/ S:/{
public void sort(int[] data) { #,@bxsB
for(int i=data.length/2;i>2;i/=2){ tlDYk
for(int j=0;j insertSort(data,j,i); 6yE'/VB<
} Oq*n9V
} tRLE,(S,-
insertSort(data,0,1); xU@1!%l@
} S-isL4D.Z
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/** 6D/uo$1Y
* @param data 1)$%Jr
* @param j By2s ']bw
* @param i 7sXy`+TZ->
*/ j'3j}G%\T
private void insertSort(int[] data, int start, int inc) { ec`bz "1
int temp; J4YT)-
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); *R5`.j =
} t:\l&R&
} ~V @;(_T
} X6Un;UL
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} ^:m^E0(H
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快速排序: }-d)ms!
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package org.rut.util.algorithm.support; #"::
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import org.rut.util.algorithm.SortUtil; dw~[9oh
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/** a* D,*C5}
* @author treeroot (@+h5@J[`I
* @since 2006-2-2 1hR
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* @version 1.0 OFL|RLiD
*/ -^yXLa;D
public class QuickSort implements SortUtil.Sort{ kB8
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/* (non-Javadoc) #;`Oj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %Ys$@dB
*/ `AR"!X
public void sort(int[] data) { I6+2>CUGo
quickSort(data,0,data.length-1); gc##V]OD
} Hk@r5<{
private void quickSort(int[] data,int i,int j){ XlVc\?
int pivotIndex=(i+j)/2; >W
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file://swap eI^gV'UK
SortUtil.swap(data,pivotIndex,j); 0mTEim
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int k=partition(data,i-1,j,data[j]); j?xk&
SortUtil.swap(data,k,j); Y=E9zUF
if((k-i)>1) quickSort(data,i,k-1); Rv,82iEKs
if((j-k)>1) quickSort(data,k+1,j); qYK4)JP
@M=$qO_$9
} !x7o|l|cP
/** \]I
* @param data 8"x9#kyU<3
* @param i (_K_`5d;QI
* @param j Tp?-*K
* @return bw9
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*/ ]BfS270
private int partition(int[] data, int l, int r,int pivot) { -^Xy%
do{ UgC)7
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); oCVku:.
SortUtil.swap(data,l,r); OqBC/p
B
} p;0 PxL=
while(l SortUtil.swap(data,l,r); &iNS?1a%f=
return l; gXt O*Rfqk
} h$pk<<
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} !4t`Hv?'
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改进后的快速排序: B!}BM}r
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package org.rut.util.algorithm.support; @.gPJMA
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import org.rut.util.algorithm.SortUtil; $eBQH
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/** \,R!S /R#
* @author treeroot MU1E_"Z)
* @since 2006-2-2 1[ SA15h
* @version 1.0 &cc9}V)M
*/ mw4JQ\
public class ImprovedQuickSort implements SortUtil.Sort { -w]/7cH
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private static int MAX_STACK_SIZE=4096; <B)
private static int THRESHOLD=10; \lEkfcc
/* (non-Javadoc) zb :kanb-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =We2^W-{
*/ hm\\'_u
public void sort(int[] data) { u]E.iXp
int[] stack=new int[MAX_STACK_SIZE]; t`YWwI.
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int top=-1; qnJ50 VVW
int pivot; Uyk,.*8"
int pivotIndex,l,r; &yU>2=/T
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stack[++top]=0; X?/Lz;,&
stack[++top]=data.length-1; ;7Okyj6EP
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while(top>0){ @h}`DNaZ^
int j=stack[top--]; DnFjEP^
int i=stack[top--]; ',)7GY/n~
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pivotIndex=(i+j)/2; ('hT
pivot=data[pivotIndex]; C:i|-te
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SortUtil.swap(data,pivotIndex,j); e2w&&B-
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file://partition ~L{l+jK$p
l=i-1; YGk9b+`
r=j; %8r/oS
do{ hXB|g[zT
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); .L EY=j!-s
SortUtil.swap(data,l,r); 6F|j(LB
} y1pu R7
while(l SortUtil.swap(data,l,r); .=c<>/
0
SortUtil.swap(data,l,j); *Y6xvib9*
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if((l-i)>THRESHOLD){ nidr\oFUIn
stack[++top]=i; 0*F}o)n/m
stack[++top]=l-1; sKL:p3r
} $,27pkwHeW
if((j-l)>THRESHOLD){ f.6~x$:)`E
stack[++top]=l+1; }6]0hWsN[
stack[++top]=j; )T|L,Lp
} %J~WC$=Qv
p&Ed\aQ%z;
} [L(hG a
file://new InsertSort().sort(data); 7%;_kFRV
insertSort(data); p2%
} )uheV,ZnY
/** }}r>
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* @param data FN^FvQ
*/ :/N+;- 18
private void insertSort(int[] data) { rs;r
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int temp; 09h.1/
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _[h8P9YI4
} ~Z)/RT/
} GTl
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} w$ fJ4+
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} =#xK=pRy;
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归并排序:
QLKK.]
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package org.rut.util.algorithm.support; ,"2TArC'z
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import org.rut.util.algorithm.SortUtil; >m6&bfy\q
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/** $8~e}8dt|
* @author treeroot 6'-As=iw
* @since 2006-2-2
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* @version 1.0 >I"V],d!6
*/ q_[G1&MC
public class MergeSort implements SortUtil.Sort{ 5&!c7$K0
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/* (non-Javadoc) I]`-|Q E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gVR@&bi7
*/ v|';!p|
public void sort(int[] data) { jp2Q9Z
int[] temp=new int[data.length]; 8|^CK|m6*
mergeSort(data,temp,0,data.length-1); {*m ?Kc7k
} SPkn3D6
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private void mergeSort(int[] data,int[] temp,int l,int r){ {KL5GowH
int mid=(l+r)/2; ci9R.U)
if(l==r) return ; *%5{'
mergeSort(data,temp,l,mid); 2f~($}+*
mergeSort(data,temp,mid+1,r); %;xOB^H^
for(int i=l;i<=r;i++){ 5Wx~ZQZ
temp=data; aHzHvl
} b;cMl'
int i1=l; E%N2k|%8d_
int i2=mid+1; }hpmO-
for(int cur=l;cur<=r;cur++){ yV_wDeAz
if(i1==mid+1) TFQ!7'xk)
data[cur]=temp[i2++]; {FO$yw=>
else if(i2>r) 5 `/< v^
data[cur]=temp[i1++]; rf&M!d}!
else if(temp[i1] data[cur]=temp[i1++]; %3r:s`{
else z(y*hazK
data[cur]=temp[i2++]; GEUg]nw
} %/%UX{8R
} R9+jW'[K
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} iA
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改进后的归并排序: ;]2s,za)qs
SkQswH
package org.rut.util.algorithm.support; E0n6$5Uc?
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import org.rut.util.algorithm.SortUtil; yY).mxRN
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/** tz NlJ~E
* @author treeroot >o,^b\
* @since 2006-2-2 /# NYi,<{X
* @version 1.0 Q
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*/ w*9br SK
public class ImprovedMergeSort implements SortUtil.Sort { k44Q):ncY7
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private static final int THRESHOLD = 10; "UFs~S|e
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/* m7c*)"^
* (non-Javadoc) Y$K!7Kq
* Cizvw'XDV
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YIhm$A"z0"
*/ `mfq
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public void sort(int[] data) { >4` dy
int[] temp=new int[data.length]; T=f|,sK +7
mergeSort(data,temp,0,data.length-1); yM.IxpT#$
} ZFm`UXS
;h=*!7:
private void mergeSort(int[] data, int[] temp, int l, int r) { E(pF:po
int i, j, k; {PU!=IkTS
int mid = (l + r) / 2; 'wasZ b<^
if (l == r) UB`ToE|Ii
return; wBj-m
if ((mid - l) >= THRESHOLD) .jw}JJ
mergeSort(data, temp, l, mid); {]*x*aa\
else rHge~nY<
insertSort(data, l, mid - l + 1); aVs(EHF
if ((r - mid) > THRESHOLD) T VmH
mergeSort(data, temp, mid + 1, r); ^[E'1$D
else Ox!U8g8c
insertSort(data, mid + 1, r - mid); lH^^77"4Qo
ocbB&
for (i = l; i <= mid; i++) { @Hb'8F
temp = data; BaF!O5M
} ,fDEz9-,
for (j = 1; j <= r - mid; j++) { `^JJ&)4iv
temp[r - j + 1] = data[j + mid]; n"PJ,ao
} s.Y4pWd5@
int a = temp[l]; %_-zWVJ
int b = temp[r]; q#A (gyy
for (i = l, j = r, k = l; k <= r; k++) { lASL8O&\
if (a < b) { n]_[NR) i
data[k] = temp[i++]; UV
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a = temp; RgdysyB
} else { YpAg
data[k] = temp[j--]; |'ln?D:&
b = temp[j]; n6d9\
} V"o7jsFH6n
} Jf)bHjC_V
} jxaD&4Fs8
j:T/ iH!YF
/** []R? ViG
* @param data o;a:Dd
* @param l 6Tw#^;q-
* @param i _-!sBK+F
*/ %D$,;{ew
private void insertSort(int[] data, int start, int len) { V-I(WzR9y
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); kd:$oS_*s
} c3*t_!@oC
} SKuIF*"!S
} )0vU
k
} _\PNr.D8
o}Odw;
堆排序: -4w=s|#.\
PjT=$]
package org.rut.util.algorithm.support; .roqEasu8
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import org.rut.util.algorithm.SortUtil; (6CN/A{qe
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/** #*$P'r
* @author treeroot (iJ1
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* @since 2006-2-2 !MDNE*_
* @version 1.0 U-k+9f 0
*/ R3)57OyV
public class HeapSort implements SortUtil.Sort{ 07Gv* .
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/* (non-Javadoc) `~eX55W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zl-2$}<a
*/ M/?KV9Xk2
public void sort(int[] data) { 9odJr]
MaxHeap h=new MaxHeap(); "'8KV\/D
h.init(data); .@-9'<K?~
for(int i=0;i h.remove(); ML-)I&>tT
System.arraycopy(h.queue,1,data,0,data.length); |4mpohX
} Cz4)Yz
`b8v1Os^2
private static class MaxHeap{
s cuHmY0
,P'P^0qJ
void init(int[] data){ >&g}7d%
this.queue=new int[data.length+1]; '}g*!jL
for(int i=0;i queue[++size]=data; +X`V|E,no
fixUp(size); I)q,kP@yY
} _LAS~x7,
} HkV1sT
IX: 25CEI2
private int size=0; 2)#K+O3c
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private int[] queue; PiV7*F4qI.
n9pN6,o+
public int get() { 1Gt/Tq$_b
return queue[1]; <PPNhf8
} wxm:7$4C
tx"sH]n
public void remove() { BQcE9~H
SortUtil.swap(queue,1,size--); JGC=(;
fixDown(1); *`j-i
} _A<u#.yd
file://fixdown }?cGf-c
private void fixDown(int k) { tt%MoQ)
int j; A*./,KT
while ((j = k << 1) <= size) { {QBB^px
if (j < size %26amp;%26amp; queue[j] j++; x}U8zt)yD3
if (queue[k]>queue[j]) file://不用交换 ze_{=Cv&Y
break; Wv__ wZ
SortUtil.swap(queue,j,k); `28};B>
k = j; %}86D[PF
} M
:3u@06a
} ]
2DH;
private void fixUp(int k) { K.G$]H
while (k > 1) { =.y*_Ja
int j = k >> 1; HL/bS/KX
if (queue[j]>queue[k]) uE[(cko
break; Om M=o*d
SortUtil.swap(queue,j,k); +\li*G]:J
k = j; #`GY}-hL!
} S$f6a'
} Q0Nyqhvi
)uv=S;+
} _3]][a,
{_(\`>
} as=m`DqOh
n~g)I&
SortUtil: ]zO/A4
$?,a[79
package org.rut.util.algorithm; /h v4x9
k3+e;[My+
import org.rut.util.algorithm.support.BubbleSort; >7!6nF3x,
import org.rut.util.algorithm.support.HeapSort; )s1Ib4C
import org.rut.util.algorithm.support.ImprovedMergeSort; K:'q>D@
import org.rut.util.algorithm.support.ImprovedQuickSort; }M1sksk5
import org.rut.util.algorithm.support.InsertSort; ZEYgK)^
import org.rut.util.algorithm.support.MergeSort; |F.)zC5{
import org.rut.util.algorithm.support.QuickSort; 7?B.0>$3>V
import org.rut.util.algorithm.support.SelectionSort; ,!V]jP)
import org.rut.util.algorithm.support.ShellSort; @&D?e:|!U
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/** X1ZgSs+i
* @author treeroot vP7K9Kx
* @since 2006-2-2 GDYFU*0
* @version 1.0 9%*wb`&
*/ >3awn*N
public class SortUtil { :'aAZegQY
public final static int INSERT = 1; 3E
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public final static int BUBBLE = 2; /-6S{hl9Ne
public final static int SELECTION = 3; qO`)F8
public final static int SHELL = 4; tpy>OT$
public final static int QUICK = 5; 6#j$GH *
public final static int IMPROVED_QUICK = 6; Ro2d,'
public final static int MERGE = 7; `h}q
Eo`
public final static int IMPROVED_MERGE = 8; 9N%JP+<89
public final static int HEAP = 9; H
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public static void sort(int[] data) { "O8gJ0e
sort(data, IMPROVED_QUICK); IVlf=k
} Hi_G
private static String[] name={ =8gHS[
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" zI~owK)%Z
}; 47r_y\U h
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private static Sort[] impl=new Sort[]{ CF|]e:
new InsertSort(), )otb>w5
new BubbleSort(), (HoqR
new SelectionSort(), u *
new ShellSort(), 9 2MTX
Osp
new QuickSort(), @\&m+;6
new ImprovedQuickSort(), fF*`'i=!
new MergeSort(), $,xnU.n
new ImprovedMergeSort(), bqanFQj
new HeapSort() O4<g%.HC6
}; a?yMHb{F
/~4"No@
public static String toString(int algorithm){ ~x{.jn
return name[algorithm-1]; 6z,&