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。 1wSJ w
插入排序: `G>
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package org.rut.util.algorithm.support; \xJTsdd
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import org.rut.util.algorithm.SortUtil; ujsJ;\c
/** fl>*>)6pm
* @author treeroot @/i{By^C
* @since 2006-2-2 T(%U$ea-S
* @version 1.0 3OTq
*/ FC+K2Yf1=0
public class InsertSort implements SortUtil.Sort{ {t`UV,
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/* (non-Javadoc) F
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Kg^L
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*/ f@&C
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public void sort(int[] data) { '^"6EF.R
int temp; 3D70`u
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); X+"8yZz3?
} bv,_7UOG
} 4L\bT;dQ|.
} $$`E@\5P
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} -_BS!T%r
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冒泡排序: BtDi$d%'
f@lRa>Z(Fm
package org.rut.util.algorithm.support; u! `oKe;
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import org.rut.util.algorithm.SortUtil; e.9oB<Etp
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/** #]bWE$sU<
* @author treeroot lSU&Yqx
* @since 2006-2-2 ~t\Hb8o
* @version 1.0 rf1Us2vp
*/ K~8;wDN`b
public class BubbleSort implements SortUtil.Sort{ |Z}uN!Jm
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/* (non-Javadoc) *+TIF"|1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TZL)jfhj
*/ e!wBNcG2
public void sort(int[] data) { wjYwQ= y5
int temp; 6?OH"!b2-}
for(int i=0;i for(int j=data.length-1;j>i;j--){ !Ziq^o.
if(data[j] SortUtil.swap(data,j,j-1); 'V=w?G
5
} mle"!*
} [I:D\)$<
} .n]P6t
} NidG|Yg~Z
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} :9!?${4R
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选择排序: Hp;Dp!PLa
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package org.rut.util.algorithm.support; i~
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import org.rut.util.algorithm.SortUtil; "QA <5P
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/** sxcpWSGA^
* @author treeroot oZ;u>MeZ
* @since 2006-2-2 }l{r9ti
* @version 1.0 $FUWB6M
*/ Z{nJ\`
public class SelectionSort implements SortUtil.Sort { ~L
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/* FRpTYLA2
* (non-Javadoc) hp?hb-4l
* ;i|V++$_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6Ouy%]0$I3
*/ TGx:#x*k
public void sort(int[] data) { @4dB$QF`&
int temp; odAeBQy
for (int i = 0; i < data.length; i++) { rQgRD)_%w
int lowIndex = i; 6+HpN"?e
for (int j = data.length - 1; j > i; j--) { Zn&S7a>7
if (data[j] < data[lowIndex]) { X]d["
lowIndex = j; l%@>)%LA
} 51 3{oM:
} g@]G
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SortUtil.swap(data,i,lowIndex); >en,MT|
} fnV^&`BB
} D/pc)3Ofe
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} Z!o&};_j
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Shell排序: \A'MEd-
X,d`-aKO\y
package org.rut.util.algorithm.support; xFcJyjo^z
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import org.rut.util.algorithm.SortUtil; KMZ:$H
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/** bQc-ryC+.
* @author treeroot yZFm<_9>
* @since 2006-2-2 [U[saR\
* @version 1.0 #xZ7%
*/ 'ms&ty*T
public class ShellSort implements SortUtil.Sort{ Dlhb'*@
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/* (non-Javadoc) 7A@GNA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0X =Yly*m@
*/ & xOEp
public void sort(int[] data) { GQ~wx1jj1
for(int i=data.length/2;i>2;i/=2){ $OU,| D
for(int j=0;j insertSort(data,j,i); Ru8k2d$B
} nE+OBdl
} tM3eB= .*
insertSort(data,0,1); D4WvRxki
} I g*68M<
P}B{FIpNG
/** /-BKdkBCpZ
* @param data m~a'
* @param j g2;!AI5f
* @param i #`R`!4
*/ )=6|G^
private void insertSort(int[] data, int start, int inc) { $OMTk
int temp; P+00wbx0
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); #=r:;,,
} "bZ{W(h
} t3%[C;@wB
} FTvFtdY
j?sq i9#
} '?Fw]z1$
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快速排序: -Bymt[
Z%_"-ENT
package org.rut.util.algorithm.support; [>l2E
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import org.rut.util.algorithm.SortUtil; w~EBm=v_>
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/** y7J2:/@[x
* @author treeroot Dj!v+<b
* @since 2006-2-2 CjRI!}S
* @version 1.0 =@w,D.5h
*/ Cz@[l=-T7
public class QuickSort implements SortUtil.Sort{ 4E[ 9)n+YV
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/* (non-Javadoc) W8hf
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y;W|)
*/ *`D(drnT{
public void sort(int[] data) { YU! SdT$
quickSort(data,0,data.length-1); ZZ/F}9!=
} \ci'Cbn\o
private void quickSort(int[] data,int i,int j){ C"
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int pivotIndex=(i+j)/2; ox9$aBjJ
file://swap O_@
SortUtil.swap(data,pivotIndex,j); rXR=fj= 2
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int k=partition(data,i-1,j,data[j]); ,m<t/@^]
SortUtil.swap(data,k,j); yhF{
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if((k-i)>1) quickSort(data,i,k-1); yu8xTh$:
if((j-k)>1) quickSort(data,k+1,j); $RA8U:Q!1e
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} Hrb67a%b
/** LRNgpjE}
* @param data 7P!<c/ E
* @param i {OHaI ;
* @param j M1(+_W`
* @return -P"9KnsO
*/ Bn>"lDf,
private int partition(int[] data, int l, int r,int pivot) { nff
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do{ yk
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); g *}M;"
SortUtil.swap(data,l,r); Imi;EHW
} |#hj O3
while(l SortUtil.swap(data,l,r); GF(<!PC
return l; @lvvI<U
} I9JiH,+
)*j>g38?
}
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改进后的快速排序: f0UB?
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package org.rut.util.algorithm.support; QU0FeGtz
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import org.rut.util.algorithm.SortUtil; [,;h1m ~iX
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/** ~zdHJ8tYp
* @author treeroot Rw8l"`
* @since 2006-2-2 9='a9\((mH
* @version 1.0 a:$hK%^
\
*/ FdrH,
public class ImprovedQuickSort implements SortUtil.Sort { 5}J|YKyP
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private static int MAX_STACK_SIZE=4096; )a:j_jy
private static int THRESHOLD=10; _
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/* (non-Javadoc) U;%I"
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8WT^ES~C
*/ .Z[Bz7
public void sort(int[] data) { X~ca8!Dq
int[] stack=new int[MAX_STACK_SIZE]; 6|#+
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int top=-1; tl.I:A5L
int pivot; k[6%+
int pivotIndex,l,r; i-6,r [<
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stack[++top]=0; i7@qfe$fR
stack[++top]=data.length-1; ]xJ5}/
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while(top>0){ ?9jl8r>
int j=stack[top--]; -Ucj|9+(a
int i=stack[top--]; 879x(JII
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pivotIndex=(i+j)/2; '3B\I#
pivot=data[pivotIndex]; cY &SKV#
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SortUtil.swap(data,pivotIndex,j); kVu8/*Q
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file://partition G8Hj<3`
l=i-1; ]
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r=j; JPeZZ13sS
do{ \2$-.npz
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); h( lkC[a&
SortUtil.swap(data,l,r); M6$9-
} EVovx7dr
while(l SortUtil.swap(data,l,r); !uIT5D
SortUtil.swap(data,l,j); DyZe+,g;S
=_(i#}"A
if((l-i)>THRESHOLD){ Y8*k18~
stack[++top]=i; m|tE3UBNv
stack[++top]=l-1; G=rgL'{
} ;W ZA
if((j-l)>THRESHOLD){ m@Ziif-A
stack[++top]=l+1; ,k% \f]a
stack[++top]=j; p#-;u1-B
} h>s|MZQ:*
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} +kh#Jq.
file://new InsertSort().sort(data); 'g3!SdaLF
insertSort(data); FbvwzZ
} )9(Mt_
/** v=-8} S
* @param data Vfm (K
*/ &``dI,NC
private void insertSort(int[] data) { fT7Z6$
int temp; `R}q&|o7<
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); axf 4N@
} .=y-T=}
} e1*<9&S
} iw`,\V&
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} H
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归并排序: f 7g?{M
:?!kZD!
package org.rut.util.algorithm.support; .f+ul@o
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import org.rut.util.algorithm.SortUtil; H@!\?5I
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/** a}oFL%=?
* @author treeroot +9 Uo<6}
* @since 2006-2-2 L^}i7nJ
* @version 1.0 KY1(yni&8[
*/ D%tcYI(
public class MergeSort implements SortUtil.Sort{ (%\vp**F
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/* (non-Javadoc) SONv]));
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \ C^fi}/]
*/ D{%l 4og
public void sort(int[] data) { }3G`f> s
int[] temp=new int[data.length]; Fpz)@0K;
mergeSort(data,temp,0,data.length-1); zli@X Z#
} u}zCcWP|L
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private void mergeSort(int[] data,int[] temp,int l,int r){ H9 d!-9I
int mid=(l+r)/2; DK!QGATh
if(l==r) return ; j3<|X
mergeSort(data,temp,l,mid); 3<5E254N
mergeSort(data,temp,mid+1,r); P>*B{fi^
for(int i=l;i<=r;i++){ *aE/\b
temp=data; #>I*c_-
} ~Ibq,9i
int i1=l; M qy5>f)
int i2=mid+1; |sQC:y>
for(int cur=l;cur<=r;cur++){ \S]"nHX
if(i1==mid+1) $:{r#mM
data[cur]=temp[i2++]; 0nz=whS{
else if(i2>r) U"Gg
,
data[cur]=temp[i1++]; =qQH,{]c6
else if(temp[i1] data[cur]=temp[i1++]; ?CaMn b8
else Dd1\$RBo
data[cur]=temp[i2++]; i|- 6
} 'N-nFc^
} i)vbmV
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} ;7Hse^Oc
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改进后的归并排序: @O&<_&
KW3Dr`A
package org.rut.util.algorithm.support; )<]*!
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import org.rut.util.algorithm.SortUtil; JG]67v{F
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/** m7GM1[?r
* @author treeroot xq U@87[_
* @since 2006-2-2 A Th<=1
* @version 1.0 z.NJu
q
*/ D)XV{Wit
public class ImprovedMergeSort implements SortUtil.Sort { 73:y&U
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private static final int THRESHOLD = 10; #:^aE|s
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/* -?m"+mUP
* (non-Javadoc) hJkP_(+J\
* SN${cs%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {8!\aYI
*/ R2]2#3`
public void sort(int[] data) { jH4,-
int[] temp=new int[data.length]; Hr?_`:
mergeSort(data,temp,0,data.length-1); /< OoZf+[
} aP#nK
mz|#K7:
private void mergeSort(int[] data, int[] temp, int l, int r) { M_<? <>|
int i, j, k; T#HW{3
int mid = (l + r) / 2; gpIq4Q<
if (l == r) .u+ZrA#
return; :A~6Gk92A
if ((mid - l) >= THRESHOLD) +prr~vgE
mergeSort(data, temp, l, mid); 3RwDIk?>%
else rA=iBb3`
insertSort(data, l, mid - l + 1); nUp, %z[
if ((r - mid) > THRESHOLD) ~\UH`_83[
mergeSort(data, temp, mid + 1, r); RDX$Wy$@L
else E%B:6
insertSort(data, mid + 1, r - mid); ;x]CaG)f
K\bA[5+N
for (i = l; i <= mid; i++) { ,Pq@{i#
temp = data; 6~:eO(pK
l
} nfL-E:n=
for (j = 1; j <= r - mid; j++) { *OX;ZQg0
temp[r - j + 1] = data[j + mid]; "@P)
} m1d*Lt>F@
int a = temp[l]; J)*7JX
int b = temp[r]; E41ay:duAl
for (i = l, j = r, k = l; k <= r; k++) { )~u<u:N
if (a < b) { RotWMGNK
data[k] = temp[i++]; W%6Y?pf)z
a = temp; nIckI!U#D
} else { %%7~<=rk
data[k] = temp[j--]; EFZ]|Z7
b = temp[j]; L0sb[:'luz
} ,aA%,C.0U
} <k41j=d
} (IE\}QcK
*$+:Cbe-F
/** ><l|&&e-
* @param data ;J]Lzh
* @param l sQIzcnKB
* @param i Vo G`@^s
*/ 8p91ni'
private void insertSort(int[] data, int start, int len) { bL6, fUS
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); <Qx]"ZP%
} Hzn6H4Rc
} R6xJw2;_
} !4?QR
} y3^>a5z!x
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堆排序: v`G [6Z
r+yl{
package org.rut.util.algorithm.support; wjRv=[
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import org.rut.util.algorithm.SortUtil; Xb/W[rcs
q'% cVM
/** =
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* @author treeroot $G,#nh2 oD
* @since 2006-2-2 Ub"6OT1tl
* @version 1.0 UP+4xG
*/ 4^OPzg6Z%p
public class HeapSort implements SortUtil.Sort{ bvR0?xnq
/x2MW5H
/* (non-Javadoc) xDsB%~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A;ti$jy
*/ o 9?#;B$
public void sort(int[] data) { f@)GiLC'"
MaxHeap h=new MaxHeap(); 3|Vh[iAa\
h.init(data); v\#1&</qd^
for(int i=0;i h.remove(); gO9\pI2
System.arraycopy(h.queue,1,data,0,data.length); K:<0!C!
} :m{;<LRV
Bh%Yu*.f
private static class MaxHeap{ D.ajO^[
?gGmJl
void init(int[] data){ HW"';M%
this.queue=new int[data.length+1]; >3,t`Z:
for(int i=0;i queue[++size]=data; 9 M<3m
fixUp(size); B]_NI=d
} ZD`9Ez)5
} 9_/dj"5
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private int size=0;
mRYM,
F?3zw4Vt~
private int[] queue; HOPi2nf{
@`D`u16]i
public int get() { 7hq$vI%0
return queue[1]; NH$!<ffz
} 5@3hb ]J
ej^pFo
public void remove() { k2@|fe
SortUtil.swap(queue,1,size--); v;_k*y[VV$
fixDown(1); >'MT]@vez
} 0CtPq`!
file://fixdown \-2O&v'}
private void fixDown(int k) { ]?/7iM
int j; \c .^^8r
while ((j = k << 1) <= size) { 'v42Q J"{
if (j < size %26amp;%26amp; queue[j] j++; tl@n}
if (queue[k]>queue[j]) file://不用交换 j56Dt_
break; `yXJaTbo
SortUtil.swap(queue,j,k); J;mvD^`g
k = j; j_#oP
} q'zV9
} /bBFPrW
private void fixUp(int k) { tAxS1<T4
while (k > 1) { TM?RH{(r
int j = k >> 1; {
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if (queue[j]>queue[k]) sDF5
break; '
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SortUtil.swap(queue,j,k); M<KWx'uV
k = j; aplOo[
} :TTZ@ q
} ^~65M/
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} ,!{/Y7PmJ
+Vsd%AnN"l
} k>aWI
o$[alh;c+W
SortUtil: 5Y}=,v*h}
B]C 9f
package org.rut.util.algorithm; 5jS8{d0
YYzl"<)c
import org.rut.util.algorithm.support.BubbleSort; zo{WmV7[|
import org.rut.util.algorithm.support.HeapSort; z}sBx9;
import org.rut.util.algorithm.support.ImprovedMergeSort; 8`4Z%;1
import org.rut.util.algorithm.support.ImprovedQuickSort; hOTqbd}
import org.rut.util.algorithm.support.InsertSort; Y7L1`<SC
import org.rut.util.algorithm.support.MergeSort; *(pmFEc
import org.rut.util.algorithm.support.QuickSort; X61p xPa
import org.rut.util.algorithm.support.SelectionSort; 017(I:V?(:
import org.rut.util.algorithm.support.ShellSort; =w#sCy
_1sjsGp>
/** B+w< 0No
* @author treeroot b+DBz}L4
* @since 2006-2-2 )c"m:3D@
* @version 1.0 _R] qoUw;
*/ qyl9#C(a
public class SortUtil { _w\A=6=q|
public final static int INSERT = 1; a{deN9Qn
public final static int BUBBLE = 2; =4H"&Eu{
public final static int SELECTION = 3; Kz`g Q |S
public final static int SHELL = 4; { :~D
public final static int QUICK = 5; pZA0Go2!IN
public final static int IMPROVED_QUICK = 6; =u,8(:R]s
public final static int MERGE = 7; h+<F,0
public final static int IMPROVED_MERGE = 8; {:!CA/0Jx
public final static int HEAP = 9; Eqc,/
wFHbz9|@I
public static void sort(int[] data) { rcx'`CIJ
sort(data, IMPROVED_QUICK); Ki_8g
} cf7UV6D g
private static String[] name={ ',g'Tl^E
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" <8_~60
}; pk&;5|cCD
i[\`]C{gf
private static Sort[] impl=new Sort[]{ DGY?4r7>y
new InsertSort(), G$HXc$OY
new BubbleSort(), Y8$,So>~
new SelectionSort(), JXa5snh{h
new ShellSort(), LaolAqU
new QuickSort(), 61"w>;d6
new ImprovedQuickSort(), #;WKuRv
new MergeSort(), x6BO%1
new ImprovedMergeSort(), o[ua$+67E
new HeapSort() kbHfdA
}; f(r=S Xa*
oTjsiXS
public static String toString(int algorithm){ -%g&O-i\
return name[algorithm-1]; ivb?B,Lz0
} K>a+-QWK3
s;[OR
public static void sort(int[] data, int algorithm) { ),u)#`.l
G
impl[algorithm-1].sort(data); ]@rt/ eX
} },W<1*|
<RFT W}f!
public static interface Sort { Dno'-{-
public void sort(int[] data); `uN}mC!r]
} #@cOyxUt
HL*Fs /W
public static void swap(int[] data, int i, int j) { $afE=
qC*
int temp = data; E/6@>.T?'
data = data[j]; HT:
p'Yyi
data[j] = temp; *sPG,6>
} j0F'I*Z3
} 'q:t48&