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。 xcF:moL
插入排序: E&}@P0^
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package org.rut.util.algorithm.support; 'T8(md299
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import org.rut.util.algorithm.SortUtil; H\zV/1~Y
/** .%.bIT
* @author treeroot V*uoGWL]+
* @since 2006-2-2 :U,n[.$5'
* @version 1.0 )&Bf%1>
*/ oi@/H\7j
public class InsertSort implements SortUtil.Sort{ jJ}3WJ
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/* (non-Javadoc) lji&]^1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X0h`g)Bbf
*/ th$?#4SbR
public void sort(int[] data) { *gq~~(jH
int temp; Z'vic#
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); O> 5xFz'm
} PD-<D~7
} tSP)'N<
} n#{z"G
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} ~HW}Wik
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冒泡排序: xJQ-k/`
&2~c,] 9C
package org.rut.util.algorithm.support; o@&Hc bN^
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import org.rut.util.algorithm.SortUtil; b6@(UneVM
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/** ~^&]8~m*d
* @author treeroot jp~C''Sj
* @since 2006-2-2 ^7qqO%
* @version 1.0 #- l1(m
*/ @w8MOT$
public class BubbleSort implements SortUtil.Sort{ zlUXp0W
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/* (non-Javadoc) Z{9
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h!vq~g
*/ *8ZaG]L
public void sort(int[] data) { ,)S(SnCF
int temp; Kx-s95t
for(int i=0;i for(int j=data.length-1;j>i;j--){ E{Tvjh+
if(data[j] SortUtil.swap(data,j,j-1); _{eH"
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} @v#]+9F
} Uz;z
} Wfw6(L
} &!kD81?Mm
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} 4RLuv?,)~
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选择排序: ([mC!d@a
\:'|4D]'I
package org.rut.util.algorithm.support; a2'si}'3
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import org.rut.util.algorithm.SortUtil; dx/NY1
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/** ]TE,N$X
* @author treeroot QB/H
* @since 2006-2-2 u?ALZxj?
* @version 1.0 ?hz9]I/8
*/ #@i1jZ
public class SelectionSort implements SortUtil.Sort { #>]o' KQx
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/* )L,.KO
* (non-Javadoc) Yv!r>\#0S
* ._ 6|epJ#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UBgheu
*/ Xy0KZ !
public void sort(int[] data) { L. %N
int temp; $aY*1UVq
for (int i = 0; i < data.length; i++) { &
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int lowIndex = i; L\CufAN
for (int j = data.length - 1; j > i; j--) { myR}~Cj;q
if (data[j] < data[lowIndex]) { K&\3j-8^
lowIndex = j; yV'<l
.N
} hC nqe
} lZt{L0
SortUtil.swap(data,i,lowIndex); `8.Oc;*zu
} 2[O\"a%
} &s+F+8"P+
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} 7QO QG:-
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Shell排序: nVO|*Bnf)
@CxXkR
package org.rut.util.algorithm.support; e5"?ol0
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import org.rut.util.algorithm.SortUtil; JdP[
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/** Fz3QSr7FU
* @author treeroot )|Ho"VEmg
* @since 2006-2-2 !6yyX}%o
* @version 1.0 8,5H^Bi
*/ ~ sC< V
public class ShellSort implements SortUtil.Sort{ qv+8wJ((
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/* (non-Javadoc) "#3p=}]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,{pC1A@s
*/ 4!I;U>b b
public void sort(int[] data) { F+lsza
for(int i=data.length/2;i>2;i/=2){ S~Z`?qHWh
for(int j=0;j insertSort(data,j,i); pE^j Uxk6
} tH}$j
} _:ORu Vk
insertSort(data,0,1); 5UTIGla
} aDae0$lc.S
P ]prrKZe,
/** GWQ_X9+q
* @param data zRz7*o&l
* @param j .3tyNjsn\
* @param i `H^?jX>7
*/ -kv'C6gB
private void insertSort(int[] data, int start, int inc) { Me.t_)
int temp; +FYQ7UE
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ^T{ww=/v
} =LUDg7P
} LK?V`J5wY
} Q)H1\
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} r
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快速排序: #wvmVB. 5~
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package org.rut.util.algorithm.support; W{{{c2 .
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import org.rut.util.algorithm.SortUtil; ?eU=xO
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/** LHS^[}x^1
* @author treeroot 6{qI
* @since 2006-2-2 xpzQ"'be
* @version 1.0 ?puZqVu5
*/ Hf
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public class QuickSort implements SortUtil.Sort{ _i-(`5
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/* (non-Javadoc) Z6`oGFq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MmvMuX]#)
*/ (16U]s
public void sort(int[] data) { ?9?eA^X%
quickSort(data,0,data.length-1); 1l~(J:DT
} YXBU9T{r
private void quickSort(int[] data,int i,int j){ (Vvs:h%H
int pivotIndex=(i+j)/2; >`@c9
m
file://swap tR;? o,T
SortUtil.swap(data,pivotIndex,j); +(*;F4>
itp$c|{
int k=partition(data,i-1,j,data[j]); :Hn*|+'
SortUtil.swap(data,k,j); XQH
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if((k-i)>1) quickSort(data,i,k-1); #fb <\!iza
if((j-k)>1) quickSort(data,k+1,j); rl<!h5
<gdKuoY
} p-6(>,+E[
/** /{j")
* @param data oI!L2
* @param i @ZD/y%e
* @param j T9c=As_EM
* @return n1Y3b~E?E
*/ *>ilT5q
private int partition(int[] data, int l, int r,int pivot) { w^.^XK4v.
do{ dV5a Ij
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); @
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SortUtil.swap(data,l,r); Ke_&dgsq
} |<YoH$.
while(l SortUtil.swap(data,l,r); X~H~k1
return l; 77:s=)
} wl*"Vagb
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} x+L
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改进后的快速排序: _QhB0/C
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package org.rut.util.algorithm.support; ][b2Q>
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import org.rut.util.algorithm.SortUtil; (IrX\Y
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/** nt"8kv
* @author treeroot azUEp8`|
* @since 2006-2-2 NWGSUUa
* @version 1.0 /f:)I.FUm
*/ ]/_GHG9
public class ImprovedQuickSort implements SortUtil.Sort { q$;'Fy%oy
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private static int MAX_STACK_SIZE=4096; .q>4? +
private static int THRESHOLD=10; m^8KHa
/* (non-Javadoc) wR"4slY_%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P p}N-me>_
*/ Z1(-FT6O
public void sort(int[] data) { T@GR Tg
int[] stack=new int[MAX_STACK_SIZE]; ic"n*SZa
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int top=-1; WF6'mg^^?
int pivot; sF/X#GG-
int pivotIndex,l,r; G isI/Ir[
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stack[++top]=0; *L%i-Wg"
stack[++top]=data.length-1; B>^5h?(lt
+UK".
while(top>0){ )A`Zgg'L7D
int j=stack[top--]; K{
s=k/h
int i=stack[top--]; yxECK&&P0#
) OqQz7'
pivotIndex=(i+j)/2; 8\M%\]_
pivot=data[pivotIndex]; $jd>=TU|
^GXy:S$
SortUtil.swap(data,pivotIndex,j); ^jO$nPDd
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file://partition ?|i6]y=D
l=i-1; HzO6hb{jJO
r=j; YzcuS/~x
do{ AX|-Gv
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); R|Oy/RGY$
SortUtil.swap(data,l,r); (okCZ-_Jn
} MuQBn7F{c
while(l SortUtil.swap(data,l,r); ,tEvz
SortUtil.swap(data,l,j); 8Ee bWs*1
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if((l-i)>THRESHOLD){ cI)XXb4
stack[++top]=i; A2`QlhZ
stack[++top]=l-1; bb6
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} m_%1IJ
if((j-l)>THRESHOLD){ n0X_m@
stack[++top]=l+1; &h7q=-XU
stack[++top]=j; x 5u.D^
} C +-<
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} =5P_xQx
file://new InsertSort().sort(data); 9`8\<a'rU
insertSort(data); +[ _)i9a
} 8F$b/Z
/** !;SpQ28
* @param data WC!b B
*/ * &j)"hX
private void insertSort(int[] data) { \ B~9Ue!
int temp; zS Yh ?NB5
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); LhZWK^!{S
} _v=@MOI/J
} ]Q\Ogfjp
} D_6GzgZ
Z\=].[,w4
} ~P*t_cpZ
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归并排序: L3Leb%,!
8gap _qTo
package org.rut.util.algorithm.support; DPfP)J:~
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import org.rut.util.algorithm.SortUtil; mT.p-C
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/** }2Lh'0 xY
* @author treeroot >4:W:;R
* @since 2006-2-2 _tR%7%3*
* @version 1.0 "y>\
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*/ 5Wj+ey^^w
public class MergeSort implements SortUtil.Sort{ JM{S49Lx
*G^n<p$"
/* (non-Javadoc) +#5nk,1c>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I/bED~Z:a
*/ ,jBd3GdlZ
public void sort(int[] data) { H_'i.t 'SS
int[] temp=new int[data.length]; Sf}>~z2
mergeSort(data,temp,0,data.length-1); |Xblz1>DF
} IMY?L
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private void mergeSort(int[] data,int[] temp,int l,int r){ uQN8/Gy*J
int mid=(l+r)/2; 47_4`rzy;
if(l==r) return ; ?~rF3M.=|
mergeSort(data,temp,l,mid); 9l+`O0.@
mergeSort(data,temp,mid+1,r); QD LXfl/
for(int i=l;i<=r;i++){ DBl.bgf
temp=data; 0fvQPs!O
}
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int i1=l; @18"o"c7j
int i2=mid+1; #&.&Uu$
for(int cur=l;cur<=r;cur++){ d:0RDK-}s
if(i1==mid+1) AElx #`T
data[cur]=temp[i2++]; +dm&XW >
else if(i2>r) pmyHto"
data[cur]=temp[i1++]; J/j1Yf'9
else if(temp[i1] data[cur]=temp[i1++]; I)ub='+&;
else wVBY^TE
data[cur]=temp[i2++]; e-4XNL[F
} ~R.8r-kD`
} B&0^3iKFi
w:Fi
2aJ
} 8uoFV=bj\
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改进后的归并排序: %3'4QmpR
C
#ng`7 q
package org.rut.util.algorithm.support; 9Ot;R?>(
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import org.rut.util.algorithm.SortUtil; TX]4Y953D
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/** SoODss~X
* @author treeroot i^(_Gk
* @since 2006-2-2 @.fuR#
* @version 1.0 e*uaxh+7
*/ OiX>^_iDt
public class ImprovedMergeSort implements SortUtil.Sort { 2 q J}5
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private static final int THRESHOLD = 10; wJJ4F$"b
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/* FG7}MUu
* (non-Javadoc) s+>""yi
* _`WbR&d2Id
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *
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*/ fGJPZe
public void sort(int[] data) { k
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int[] temp=new int[data.length]; 3ik
mergeSort(data,temp,0,data.length-1); 4VPL
-":6
} @`aR*B
IpY R
private void mergeSort(int[] data, int[] temp, int l, int r) { \4I1wdd|^
int i, j, k; 9i WDEk
int mid = (l + r) / 2; $j^Jj
if (l == r) goi.'8M|/b
return; <CJua1l\
if ((mid - l) >= THRESHOLD) gF1qZ=<
mergeSort(data, temp, l, mid); vpx8GiV
else AwB ]0H
insertSort(data, l, mid - l + 1); 1?"vKm
if ((r - mid) > THRESHOLD) S =q.Y
mergeSort(data, temp, mid + 1, r); 3 q
else [AQ6ads)
insertSort(data, mid + 1, r - mid); +ex@[grsGT
Mn $TWhg'
for (i = l; i <= mid; i++) { Nh~ Hh(
temp = data; b9[;qqq@'
} QJp
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for (j = 1; j <= r - mid; j++) { 9 )u*IGj
temp[r - j + 1] = data[j + mid]; d<.
hkNN
} CfQOG7e@
int a = temp[l]; 8Wid.o-U
int b = temp[r]; 4H8vB^
for (i = l, j = r, k = l; k <= r; k++) { F{ J>=TC
if (a < b) { =:[Jz1 M5
data[k] = temp[i++]; Z5;1ySn{
a = temp; ex7zg!
} else { vmL%%7
data[k] = temp[j--]; 4&)*PKq
b = temp[j]; _)Q)tOW
} %TxFdF{A
} ws
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} t>f<4~%MJ
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/** n[lf==R
* @param data ZO{uG(u
* @param l E~ _2Jf\U
* @param i \%=\_"^?
*/ [Rw0']i`4
private void insertSort(int[] data, int start, int len) { x;S v&
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1);
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} F"VNz^6laV
} ,i#]&f`c;5
} 7kO5hlKeo
} Ji4c8*&Jpc
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堆排序: q.FgX
{o<
4 ^
package org.rut.util.algorithm.support; |/C>xunzz
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import org.rut.util.algorithm.SortUtil; GrjL9+|x
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/** F.ryeOJ
* @author treeroot 23@e?A=C
* @since 2006-2-2 e*jt(p[Ge
* @version 1.0 &\4AvaeA8y
*/ e@*Gnh<&
public class HeapSort implements SortUtil.Sort{ YUJlQ2e(
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/* (non-Javadoc) .5|AX6p+^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D{I^_~-\5
*/ Ox.&tW%@
public void sort(int[] data) { 2+
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MaxHeap h=new MaxHeap(); +b1(sk=4z
h.init(data); 2-j+-B|i
for(int i=0;i h.remove(); rcMVYSj0
System.arraycopy(h.queue,1,data,0,data.length); 55MsF}p
} % @3AA<
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private static class MaxHeap{ 4_3Jpz*
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f
void init(int[] data){ JDfkm+}uY
this.queue=new int[data.length+1]; ?Z
{4iF
for(int i=0;i queue[++size]=data; ;X-~C.7k
fixUp(size); qEPvV
} ;0O3b
} trnjOm
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private int size=0; )a.Y$![
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private int[] queue; Ac'[(
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public int get() { A\iDK10Q$
return queue[1]; a'U7 t
} >[B}eS>
IlG)=?8XZ
public void remove() { V$%%nG uE
SortUtil.swap(queue,1,size--); w'z?1M(*
fixDown(1); "_]n_[t2C
} J*$u
file://fixdown W&ya_iP~C
private void fixDown(int k) { MKLnt X
int j; ^
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while ((j = k << 1) <= size) { p0~=
if (j < size %26amp;%26amp; queue[j] j++; )kR~|Yn<-
if (queue[k]>queue[j]) file://不用交换 #-dfG.*
break; i71,
SortUtil.swap(queue,j,k); m d:$OC3
k = j; By(:%=.
} ,L%\{bp5
} ?F]Yebp^
private void fixUp(int k) { :L#t?~
while (k > 1) { RQ}(}|1+\
int j = k >> 1; q+f]E&':
if (queue[j]>queue[k]) H_KE^1
break; 5_Yl!=
SortUtil.swap(queue,j,k); Yn4c6K
k = j; </F@5*
} ~L(=-B`Ow
} yPrp:%PS
lG12Su/
} V{@
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wU,{5 w
} P.Pw.[:3
w6DK&@w`'/
SortUtil: |P7c {
s$`g%H>
package org.rut.util.algorithm; jV
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KD?~ hpg
import org.rut.util.algorithm.support.BubbleSort; )w];eF0c
import org.rut.util.algorithm.support.HeapSort; l<5O\?Vo]
import org.rut.util.algorithm.support.ImprovedMergeSort; :acnrW>i[@
import org.rut.util.algorithm.support.ImprovedQuickSort; {Ts@#V=:
import org.rut.util.algorithm.support.InsertSort; dd1m~Gm
import org.rut.util.algorithm.support.MergeSort; 6OR5zXpk
import org.rut.util.algorithm.support.QuickSort; CqX2R:#
import org.rut.util.algorithm.support.SelectionSort; lxoc.KDtR
import org.rut.util.algorithm.support.ShellSort; ModwJ
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/** #PUvrA2Zl
* @author treeroot pFi.?|6"
* @since 2006-2-2 Y: &?xR
* @version 1.0 "&?F6Pi
*/ Qj: D=j8
public class SortUtil { 2?YN8
n9n
public final static int INSERT = 1; 2|]$hjs
public final static int BUBBLE = 2; }Kc[pp|9<
public final static int SELECTION = 3; N:'v^0
public final static int SHELL = 4; T|^rFaA
public final static int QUICK = 5; (dD+?ZOO
public final static int IMPROVED_QUICK = 6; *A C){M
public final static int MERGE = 7; kbzzage6L
public final static int IMPROVED_MERGE = 8; z=1 J{]
public final static int HEAP = 9; hJY= )
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public static void sort(int[] data) { JU+Uzp
sort(data, IMPROVED_QUICK); B:S/
?v
} ({ 'I;]AQ
private static String[] name={ K{)N:|y%!$
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" x95[*[
}; (|%YyRaX
\jL n5$OW
private static Sort[] impl=new Sort[]{ m<L.H33'
new InsertSort(), v0euvs
new BubbleSort(), gi!{y
new SelectionSort(), S <~"\<ED
new ShellSort(), SrGX4
new QuickSort(), |uo<<-\jTO
new ImprovedQuickSort(), !f5I.r~
new MergeSort(), =d>^q7s
new ImprovedMergeSort(), \49LgN@\
new HeapSort() 1L722I@
}; "@: b'm
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public static String toString(int algorithm){ )>,;
GVu"
return name[algorithm-1]; j2O?]M
} <=WSX{_D
0<f\bY02
public static void sort(int[] data, int algorithm) { ioxsx>e<
impl[algorithm-1].sort(data); <aps)vF
} 57r?`'#*
Q/[|/uNw?
public static interface Sort { _SU%ul
public void sort(int[] data); I*cB
Ha
} 7hAFK
#wz1uw[pI!
public static void swap(int[] data, int i, int j) { YC!Tgb~H
int temp = data; qK}4r5U
data = data[j]; l)y$c}U
data[j] = temp; t(3<w)r2
} lq0@)'D
} Y rq-(