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。 $B~a*zZ7
插入排序: K
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package org.rut.util.algorithm.support; cK(}B_D$
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import org.rut.util.algorithm.SortUtil; [dk|lkj@u\
/** .W,<]L '
* @author treeroot A{>]M@QC2
* @since 2006-2-2 izY,t!
* @version 1.0
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*/ >%qGK-_
public class InsertSort implements SortUtil.Sort{ ^M,t`r{
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/* (non-Javadoc) kC01s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cOOPNa>5_
*/ ?b#/*T}ac
public void sort(int[] data) { Wxjk}&+pVa
int temp; &m'O :ZS2
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >6:slNM#
} 1Lqs>*
} 6:v8J1G(<
} i/C#fIB2
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} klT6?'S
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冒泡排序: OMJr.u
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package org.rut.util.algorithm.support; _]j=[|q 9
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import org.rut.util.algorithm.SortUtil; $ n n4
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/** </bWFW~x
* @author treeroot ~ZG>n{Q
* @since 2006-2-2 cAVe(:k)
* @version 1.0 &|9mM=^
*/ r\@"({q}_-
public class BubbleSort implements SortUtil.Sort{ /W:}p(>4a
Jfo|/JQ
/* (non-Javadoc) )lB-D;3[_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |g8
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*/ g\rujxHlH
public void sort(int[] data) { .a;-7|x
int temp; I #1_
for(int i=0;i for(int j=data.length-1;j>i;j--){ * fSa8CV
if(data[j] SortUtil.swap(data,j,j-1); }9Y='+.%^
} ~`*:E'/5k]
} U!3nn#!yE
} 6XFO@c}d
} [<wy@W
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} BAX])~_
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选择排序: {:4); .
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package org.rut.util.algorithm.support; u>k;PUH4
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import org.rut.util.algorithm.SortUtil; um&N|5lHb
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/** 5:iril
* @author treeroot )I1LBvfQ
* @since 2006-2-2 Y]Su<tgX?
* @version 1.0 vk{4:^6.TV
*/ )byQ=-<1
public class SelectionSort implements SortUtil.Sort { jG)>{D
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/* HeSnj-mtr}
* (non-Javadoc) 7T4rx53
* Gps
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t:m
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*/ 'v6Rd)E\z
public void sort(int[] data) { 6TfXz2D'J
int temp; E+E5`-V
for (int i = 0; i < data.length; i++) { sUj#:X
int lowIndex = i; f8[2$i*cL
for (int j = data.length - 1; j > i; j--) { Plm3vk=
if (data[j] < data[lowIndex]) { t9 &O0tpe
lowIndex = j; }pTw$B
} dN\pe@#lKP
} g](m& O
SortUtil.swap(data,i,lowIndex); '\_ic=&u
} #GWQ]r?
} *D4H; P#
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} P-+ ^YN,
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Shell排序: C$,S#n@
nr s!e
package org.rut.util.algorithm.support; {W `/KU?u
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import org.rut.util.algorithm.SortUtil; u6(7#n02
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/** )}?dYk
* @author treeroot S G43}
* @since 2006-2-2 zQ)[re)
* @version 1.0 dW:
*/ UAcABL^2
public class ShellSort implements SortUtil.Sort{ ceZt%3=5
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/* (non-Javadoc) SxOM@A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }jIb ^|#CD
*/ q!O~*
public void sort(int[] data) { 55,vmDd
for(int i=data.length/2;i>2;i/=2){ fl)Oto7
for(int j=0;j insertSort(data,j,i); g2iSc
} k]f73r
} m m`:ci
insertSort(data,0,1); ipU"|{NK
} FEdyh?$
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/** B\<zU
* @param data Ge97e/CY
* @param j B<0lif|
* @param i yTZbJx?m
*/ /ox}l<ha
private void insertSort(int[] data, int start, int inc) { 7L]fCw
p[
int temp; 7J 0!vq
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Z/_RQ q
} re^1fv
} @Z |cUHo
} kM9E)uT>(<
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} ?;i6eg17<
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快速排序: xQ$*K]VP
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package org.rut.util.algorithm.support; xpSMbX{e
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import org.rut.util.algorithm.SortUtil; 0}w>8L7i{
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/** fQe- v_K
* @author treeroot ) tsaDG-E
* @since 2006-2-2 mD0pqK
* @version 1.0 AQ-PY
*/ *;4r|#LG
public class QuickSort implements SortUtil.Sort{ *8MU,6
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/* (non-Javadoc) thUs%F.5?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o[8Y %3
*/ tAaFIIvY
public void sort(int[] data) { 1UmV&
quickSort(data,0,data.length-1); o&X!75^G>
} kw1PIuz4&
private void quickSort(int[] data,int i,int j){ D^f;dT;-
int pivotIndex=(i+j)/2; fxyPh
file://swap 3+(Fq5I
SortUtil.swap(data,pivotIndex,j); _-&Au%QNJ`
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int k=partition(data,i-1,j,data[j]); ]Nm_<%lT
SortUtil.swap(data,k,j); {mI95g&
if((k-i)>1) quickSort(data,i,k-1); E8)C_[QJ`
if((j-k)>1) quickSort(data,k+1,j); OyTBgS G?a
z3>}(+
} PUucYc
/** scrNnO[3j
* @param data B_@>HZ\&
* @param i 7gPkg63
* @param j Z7Mc.[C
* @return Imi_}NB+
*/ N{E>R&,q
private int partition(int[] data, int l, int r,int pivot) { |\elM[G"g
do{ wUl}x)xo
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); "iOT14J!7
SortUtil.swap(data,l,r); DJ=miJI'
} HO$s&}t
while(l SortUtil.swap(data,l,r); =Y
/
return l; 3hb1^HNT
} nCYicB
jcevpKkRG
} Tb~(?nY5
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改进后的快速排序: 22(0Jb\_
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package org.rut.util.algorithm.support; g+)T\_#u
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import org.rut.util.algorithm.SortUtil; y%3Yr?]
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/** qhiQ!fMQ
* @author treeroot Gu&zplB
* @since 2006-2-2 ~Kt.%K5lgt
* @version 1.0 \e ( h6,@
*/ <7u*OYjA
public class ImprovedQuickSort implements SortUtil.Sort { _
@ \
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private static int MAX_STACK_SIZE=4096; ]cFqKs
private static int THRESHOLD=10; eWcS>N
/* (non-Javadoc) e7 5*84
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HJoPk'p%
*/ { \r{$<s
public void sort(int[] data) { R.+QK6B&
int[] stack=new int[MAX_STACK_SIZE]; lvk(q\-f
+loD{
int top=-1; IO|">a6
int pivot; 4,TS1H
int pivotIndex,l,r; /GfC/)1_
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stack[++top]=0; uFG]8pj2V1
stack[++top]=data.length-1; 3'*SSZmnOB
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while(top>0){ (<2PhJ|
int j=stack[top--]; .hBE&Y>\
int i=stack[top--]; HWD
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pivotIndex=(i+j)/2; t\u0\l>
pivot=data[pivotIndex]; d-39G*;1
\jZvP`.2
SortUtil.swap(data,pivotIndex,j); Rq9v+Xq2
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file://partition R\1#)3e0
l=i-1; #ZF|5r +
r=j; *\:u}'[
do{ :] {+3A
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 9cX
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SortUtil.swap(data,l,r); 0|P RCq
} ,Q >u
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while(l SortUtil.swap(data,l,r); 4k<4=E
SortUtil.swap(data,l,j); H?UmHwwE
vsHY; [
if((l-i)>THRESHOLD){ pA4oy
stack[++top]=i; SJj0*ry:
stack[++top]=l-1; IP/
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} Rr(,i%fu
if((j-l)>THRESHOLD){ cm]8 m_!
stack[++top]=l+1; B,,f$h!
stack[++top]=j; i
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} D_(xhM
j`ggg]"&$
} }3 RqaIY}
file://new InsertSort().sort(data); = w_y<V4
insertSort(data); >*B/Wy
} }4 5|
/** lLyMm8E%pZ
* @param data doVBV Tk^
*/ ~z%K9YcyU
private void insertSort(int[] data) { h+}`mi
int temp; %Mz(G-I.\
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >jRz4%
} M*}C.E!
} oq(um:m
} asmMl9)(`
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} *5.s@L( VU
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归并排序: c_vj't
N:\I]M
package org.rut.util.algorithm.support; D />REC^
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import org.rut.util.algorithm.SortUtil; 8yA: C
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/** fA2H8"r
* @author treeroot 2<
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* @since 2006-2-2 Xc"S"a^\%
* @version 1.0 <s)+V6\E
*/ FsTE.PT
public class MergeSort implements SortUtil.Sort{ ^SVdaQ{7
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/* (non-Javadoc) G*3O5m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?)'j;1_=E3
*/ Uw)?u$+
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public void sort(int[] data) { 6rF[eb
int[] temp=new int[data.length]; WojZ[j>
mergeSort(data,temp,0,data.length-1); O>lF{yO0`
} P`cEu6:
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private void mergeSort(int[] data,int[] temp,int l,int r){ .~4%TsBaY
int mid=(l+r)/2; w J/k\
if(l==r) return ; e(O"V3wq*6
mergeSort(data,temp,l,mid); !!%vs
6
mergeSort(data,temp,mid+1,r); u
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for(int i=l;i<=r;i++){ $DJp|(8
temp=data; +^1HtI|y
} ~^w;`~L
int i1=l; L'`W5B@
int i2=mid+1; aM,>LKNbQ
for(int cur=l;cur<=r;cur++){ GG/~)^VMe
if(i1==mid+1) 0<Vw0%!
data[cur]=temp[i2++]; @{j'Pf'
else if(i2>r) =X2 Ieb
data[cur]=temp[i1++]; (|Y[5O)
else if(temp[i1] data[cur]=temp[i1++]; [^A 93F
else {ckA
data[cur]=temp[i2++]; mrS:||,_
} gmJiKuAL5
} TGY^,H>J
]Z&2
} TWK(vEDM
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改进后的归并排序: [mYmrLs6
bP`yLz
package org.rut.util.algorithm.support; .fk!~8b[Q+
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import org.rut.util.algorithm.SortUtil; bu1O<*
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/** {()8 Wr
* @author treeroot w3a`G|
* @since 2006-2-2 w[qWr@
* @version 1.0 hvnZ
2x.?d
*/ RM|<(kq
public class ImprovedMergeSort implements SortUtil.Sort { >t.2!Z_RQ
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private static final int THRESHOLD = 10; ygW,4Vz7J
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/* Ie`kzssM
* (non-Javadoc) H^Ik FEVs
* =mxmJFA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vq
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*/ lBvQ?CJ<y
public void sort(int[] data) { .ZJt
int[] temp=new int[data.length]; nsqc^
K^
mergeSort(data,temp,0,data.length-1); aF1pq
} \/p\QT@mm
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private void mergeSort(int[] data, int[] temp, int l, int r) { 8j. 9Sk/
int i, j, k; hub1rY|No
int mid = (l + r) / 2; nzmv>s&UW
if (l == r) X<9jBj/t
return; 'Q Ff 7A
if ((mid - l) >= THRESHOLD) ,9^wKS!7$
mergeSort(data, temp, l, mid); P PZxH}J.
else L&+XFntR
insertSort(data, l, mid - l + 1); d}GO(
if ((r - mid) > THRESHOLD) '=EaZ>=
mergeSort(data, temp, mid + 1, r); j)?I]j/
else iqig~fjK~
insertSort(data, mid + 1, r - mid); U{gJn#e/.
]7}2"?J4v
for (i = l; i <= mid; i++) { ]xBQ7Xqf|
temp = data; ^EdY:6NJ=A
} _fz-fG 1
for (j = 1; j <= r - mid; j++) { M$d DExd~
temp[r - j + 1] = data[j + mid]; KGS=(z
} /m%i"kki
int a = temp[l]; kep.+t[
int b = temp[r]; ~v$gk
for (i = l, j = r, k = l; k <= r; k++) { m/r4f279
if (a < b) { Dtl381F J
data[k] = temp[i++]; }A'QXtI/G
a = temp; Sp: `Z1kH
} else { h`F8GNx(
data[k] = temp[j--]; eVL'Ao&Ho
b = temp[j]; M]oO1GM
} 3de<H=H'
} +]*4!4MK6
} WUkx v*
;>{BK,
/** V)V\M6
* @param data Jb
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* @param l NdZv*
* @param i T52A}vf4
*/ j4$XAq~W
private void insertSort(int[] data, int start, int len) { Zmw'.hL
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1);
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} ?u{y[pI6
}
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} Ho9 a#9
} O+A/thI%*S
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堆排序: V4ml& D
6;i]v|M-
package org.rut.util.algorithm.support; 4<CHwIRHY
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import org.rut.util.algorithm.SortUtil; U@x5cw:
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/** E#X(0(A)
* @author treeroot z@iu$DZ
* @since 2006-2-2 xH!{;i
* @version 1.0 Wg9q_Ql
*/ v>CAA"LH
public class HeapSort implements SortUtil.Sort{ Z%Q[W}iD
6 6WAD$8$
/* (non-Javadoc) L l\y2oJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RZi]0l_A'
*/ }DjW
public void sort(int[] data) { QL%&b\K
MaxHeap h=new MaxHeap(); &$ZJfHD@
h.init(data); ,E2Tw-%
for(int i=0;i h.remove(); ORHs1/L`j
System.arraycopy(h.queue,1,data,0,data.length); yPL1(i;
} DS0c0lsx
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private static class MaxHeap{ Hz&a~
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void init(int[] data){ *U|K~dl]K
this.queue=new int[data.length+1]; q '9u8b
for(int i=0;i queue[++size]=data; =Bu>}$BD
fixUp(size); BWV)>
-V
} YYwFjA@
} Ugzq;}V#
-\xNuU
private int size=0; PRcW}"m]Qg
%H Pwu &
private int[] queue; ~fbFA?g3
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public int get() {
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return queue[1]; ,\ [R\s
} YMx]i,u'+
f-&4x_5
public void remove() { Q]wM WV
SortUtil.swap(queue,1,size--); &6V[@gmD
fixDown(1); :23w[vt=
} ".Z|zt6C
file://fixdown aGY R:jR$
private void fixDown(int k) { IGqg,OEAp
int j; LldZ"%P
while ((j = k << 1) <= size) { s>hNwb/
if (j < size %26amp;%26amp; queue[j] j++; *\><MXx
if (queue[k]>queue[j]) file://不用交换 8i"v7}
break; _dCdyf
SortUtil.swap(queue,j,k); >qkZn7C
k = j; ,xmmS\
} 5nC#<EE
} |Xz-rgkQ
private void fixUp(int k) { %"kF i
while (k > 1) { w@,Yj#_9cx
int j = k >> 1; IJ >qs8
if (queue[j]>queue[k]) nKpXRuFn\
break; foO/Yc
SortUtil.swap(queue,j,k); %i[G6+-
k = j; d^AXhQjQN-
} \>,[5|GU
} &p|+K
XIf
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} K@yLcgr{O2
*l\wl @{
} OI:G~Wg
+P YX.
SortUtil: /,#HGu]q'
H&0dc.n~.
package org.rut.util.algorithm; KWwEK]
}t5-%&gBY0
import org.rut.util.algorithm.support.BubbleSort; ?}p~8{ '
import org.rut.util.algorithm.support.HeapSort; .yK~FzLs
import org.rut.util.algorithm.support.ImprovedMergeSort; 84(NylZ
import org.rut.util.algorithm.support.ImprovedQuickSort; R|4a9G
import org.rut.util.algorithm.support.InsertSort; /Wos{}Z0
import org.rut.util.algorithm.support.MergeSort; %%d3M->C}
import org.rut.util.algorithm.support.QuickSort; #_oN.1u57
import org.rut.util.algorithm.support.SelectionSort; 0m8mHJ<&
import org.rut.util.algorithm.support.ShellSort; t@=*k9
Ed">$S
/** ob= ](
* @author treeroot FO[x
c;
* @since 2006-2-2 iN\m:m
* @version 1.0 Jc8^m0_
*/ ^!a4!DGVT
public class SortUtil { 2;&K*>g&.
public final static int INSERT = 1; B<^yT@Wc
public final static int BUBBLE = 2; rf@Cz%xDD
public final static int SELECTION = 3; )T2V<3l
public final static int SHELL = 4; Y
1v9sMN,
public final static int QUICK = 5; jd>ug=~x
public final static int IMPROVED_QUICK = 6; oW[];r
public final static int MERGE = 7; ">zK1t5=
public final static int IMPROVED_MERGE = 8; Tnd)4}2p
public final static int HEAP = 9; 2H\}N^;f
8kn> ?
public static void sort(int[] data) { aL?+# j^"
sort(data, IMPROVED_QUICK); /?(\6Z_A
} 47<fg&T
private static String[] name={ 4th*=ku
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" >aw`kr
}; 'c]Fhe fb
Ddu1>"p-x
private static Sort[] impl=new Sort[]{ F"|OcKAA}h
new InsertSort(), 0[\sz>@
new BubbleSort(), >]/RlW[
new SelectionSort(), w^BF.Nu
new ShellSort(), ML:Zm~A1U
new QuickSort(), $G UCVxs
new ImprovedQuickSort(), +)J;4B
new MergeSort(),
19#s:nt9
new ImprovedMergeSort(), 1:Sq?=&
new HeapSort() dUvgFOy|P
}; G+5_I"`W
As}3VBd
public static String toString(int algorithm){ ?ZF~U
return name[algorithm-1]; {e35O(Y
} \}Hi\k+h':
>_3P6-L>
public static void sort(int[] data, int algorithm) { FGRdA^`
impl[algorithm-1].sort(data); P]A~:Lj
} :ebu8H9f%
#aHJ|[[(n
public static interface Sort { $V/Hr/0
public void sort(int[] data); i#pBzJ
} qpt},yn)C
T<a/GE/
public static void swap(int[] data, int i, int j) { >IT19(J;A
int temp = data; UR{OrNg*
data = data[j]; [}+h86:y
data[j] = temp; Y|
dw>qO
} fo$s9g^<
} `<#Ufi*c