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。 la0BiLzb]
插入排序: =.f-w0V
lT(WD}OS
package org.rut.util.algorithm.support; V@e?#iz
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import org.rut.util.algorithm.SortUtil; DCIxRPw
/** (C-{B[Y
* @author treeroot r3&G)g=u
* @since 2006-2-2 |[<_GQl
* @version 1.0 U@_dm/;0&
*/ eL10Q(;P`
public class InsertSort implements SortUtil.Sort{ ]'!f28Ng-
n$xc];j
/* (non-Javadoc) @5=oeOg36
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d6}r#\
*/ D0&,?
public void sort(int[] data) { Z0x ar]4V
int temp; fi-WZ
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); a
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} z1PBMSG
} -LK
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} TyD4|| %
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} J*yf2&lI5
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冒泡排序: ]i&6c
dt \TQJc~
package org.rut.util.algorithm.support; ck ]Do!h
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import org.rut.util.algorithm.SortUtil; nhB1D-
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/** 0bceI
* @author treeroot .0S~872
* @since 2006-2-2 Uol|9F
* @version 1.0 B:b5UD
*/ ZXqSH${Tp
public class BubbleSort implements SortUtil.Sort{ B8.Pn
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/* (non-Javadoc) bR*-Ht+wd
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KyVQh8
*/ ocqU=^ta
public void sort(int[] data) { g`{;(/M+
int temp; 8{wwd:6
for(int i=0;i for(int j=data.length-1;j>i;j--){ 9oRy)_5Z(=
if(data[j] SortUtil.swap(data,j,j-1); W]"zctE
} Tzt8h\Q^z
} -[*,^Ti`
} SN9kFFIPb=
} &oP+$;Y
3EV;LH L
} k$R~R-'
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选择排序: R@58*c:U(
wj*,U~syB
package org.rut.util.algorithm.support; Jj>?GAir
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import org.rut.util.algorithm.SortUtil; +6sy-<ZL:
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/** Eza`Z`
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* @author treeroot Sz%tJD..
* @since 2006-2-2 **w!CaqvY
* @version 1.0 (yu/l6[
*/ ' KWyx
public class SelectionSort implements SortUtil.Sort { d?s<2RkPT
~ZmN44?R
/* oz,np@f)J
* (non-Javadoc) Jv>gwV{
* j#X.KM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s[M?as
*/ a=1NED'
public void sort(int[] data) { N+m)/x
=:
int temp; nGpXI\K
for (int i = 0; i < data.length; i++) { T}Km?d
int lowIndex = i; 8qk?E6
for (int j = data.length - 1; j > i; j--) { Nh8Q b/::
if (data[j] < data[lowIndex]) { NTdixfR
lowIndex = j; (_niMQtF}
} \a 5U8shc
} ]9YJ,d@J
SortUtil.swap(data,i,lowIndex); $yn];0$J
} )<oJnxe]
} 3)F|*F3R
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} M`. tf_x
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Shell排序: G<At_YS
0C =3dnp6
package org.rut.util.algorithm.support; $*SW8'],`
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import org.rut.util.algorithm.SortUtil; 00G%gQXk,
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/** gwOa$f%O
* @author treeroot E=jNi
* @since 2006-2-2 8qY79)vD4E
* @version 1.0 -9%:ilX~
*/ >z/#_z@LV
public class ShellSort implements SortUtil.Sort{ r;B8i!gD
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/* (non-Javadoc) =+/eLKG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D2<fw#
*/ ^"VJd[Hn
public void sort(int[] data) { W}3.E "K
for(int i=data.length/2;i>2;i/=2){ "8c@sHk(w
for(int j=0;j insertSort(data,j,i); "w^!/
} xe#FUS
3
} yyoqX"v[
insertSort(data,0,1); nc~F_i=
} s:OFVlC%\
1/RsptN"v
/** 5A%w 8Qv
* @param data b1^vd@(lx
* @param j FemCLvu
* @param i PpGL/,]X
*/ w QgoN%
private void insertSort(int[] data, int start, int inc) { ||T2~Q*:y
int temp; 8
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for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); lphFhxJA{
} O}tZ - 'T
} 4zASMu
} 2>|dF~"
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} vGc,vjC3x
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快速排序: }E+!91't.^
;,$NAejgd
package org.rut.util.algorithm.support; O!zV)^r
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import org.rut.util.algorithm.SortUtil; Ao&\E cIOT
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/** 3;)>Fs;
* @author treeroot :}yi-/_8!
* @since 2006-2-2 @AKn@T5
* @version 1.0 JIOh#VNU
*/ !(mjyr
public class QuickSort implements SortUtil.Sort{ wAX1l*`
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/* (non-Javadoc) 3 j!3E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }XZ'v_Ti
*/ iDN;m`a
public void sort(int[] data) { X'wE7=29M
quickSort(data,0,data.length-1); |>27'#JC
} V_>\9m
private void quickSort(int[] data,int i,int j){ ji1viv
int pivotIndex=(i+j)/2; YsG%6&zEq
file://swap sC27FVwo
SortUtil.swap(data,pivotIndex,j); ;>506jZ
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int k=partition(data,i-1,j,data[j]); vbkI^+=,YY
SortUtil.swap(data,k,j); z3`-plE
if((k-i)>1) quickSort(data,i,k-1); 4FEk5D
if((j-k)>1) quickSort(data,k+1,j); ?f#y1m
n?A6u\sQ
} +~'865 {
/** ICuF %
* @param data L=c!:p|7)
* @param i 4A@NxihH
* @param j 3j,Q`+l/6d
* @return A54N\x,
*/ Dakoqke
private int partition(int[] data, int l, int r,int pivot) { V7GRA#|
do{ xgABpikC^
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); rE iKi
SortUtil.swap(data,l,r); ~oI1zNz/
} n/DP>U$I&
while(l SortUtil.swap(data,l,r); N<f"]
return l; @WJgWJm
} /nyUG^5#{
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} ^cV;~&|.Xk
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改进后的快速排序: if}-_E<F
wkP#Z"A0~
package org.rut.util.algorithm.support; (2$(
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import org.rut.util.algorithm.SortUtil; )_1zRT| 9
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/** Kpb#K[(]&
* @author treeroot >GQEqXs
* @since 2006-2-2 L~_9_9c
* @version 1.0 Z= jr-)kK
*/ g$(
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public class ImprovedQuickSort implements SortUtil.Sort { qi;f^9M%
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private static int MAX_STACK_SIZE=4096;
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private static int THRESHOLD=10; ~}F{vm
/* (non-Javadoc) =Qh\D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NXwz$}}Pp
*/ km)zMoE{c{
public void sort(int[] data) { zfI>qJ+Nqt
int[] stack=new int[MAX_STACK_SIZE]; , 3,gG"
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int top=-1; g$HwxA9Gp/
int pivot; .}'qUPNR
int pivotIndex,l,r; &F\?
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stack[++top]=0; }xBc0gr
stack[++top]=data.length-1; }tsYJlh5
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while(top>0){ y|CP;:f;
int j=stack[top--]; EPS={w$'s
int i=stack[top--]; W.z;B<
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pivotIndex=(i+j)/2; yMyE s 8
pivot=data[pivotIndex]; 7G.#O}).b
*&?c(JU;<
SortUtil.swap(data,pivotIndex,j); HU%o6c w
/b]oa!
file://partition vLR~'"`F
l=i-1; q2. XoCf
r=j; ?z}=B
do{ hZh9uI7.
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ^[]}R:
SortUtil.swap(data,l,r); #Xhdn\7
} P/xKnm~
while(l SortUtil.swap(data,l,r); R16'?,
SortUtil.swap(data,l,j); XpmS{nb
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if((l-i)>THRESHOLD){ (:._"jp]
stack[++top]=i;
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stack[++top]=l-1; n3}!p'-CC
} CK:y?
if((j-l)>THRESHOLD){ KC(xb5x
Y
stack[++top]=l+1; T_sTC)&a
stack[++top]=j; /3eKN
} 8CnRi
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} s4 6}s{6
file://new InsertSort().sort(data); =:D aS`~V
insertSort(data); -QOw8vm
} {LX.iH9}l
/** [QMu2
* @param data Sl-v W
*/ 4Fp0ZVT
private void insertSort(int[] data) { &C_'p {G
int temp; ~vXaqCX
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4D['^q
} =Vy`J)z9
} &8%e\W\K:/
} Y]{
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Swp;HW7x
} |AcRIq
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归并排序: g0>,%b
e?_@aa9~@{
package org.rut.util.algorithm.support; 70f Klp
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import org.rut.util.algorithm.SortUtil; GDu~d<R H
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/** bhkUKxd
* @author treeroot SG-'R1
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* @since 2006-2-2 IB#
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* @version 1.0 =
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*/
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public class MergeSort implements SortUtil.Sort{ vFE;D@bz:
ta`N8vnf
/* (non-Javadoc) $-#Yl&?z9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 58%#DX34M
*/ S:TgFt0
public void sort(int[] data) { X>NhZ5\
int[] temp=new int[data.length];
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mergeSort(data,temp,0,data.length-1); Zm=(+
f
} (>`5z(X
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private void mergeSort(int[] data,int[] temp,int l,int r){ ~=8uN<
int mid=(l+r)/2; {Zh>mHW3
if(l==r) return ; G
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mergeSort(data,temp,l,mid); 6&bY} i^K
mergeSort(data,temp,mid+1,r); /%0<p,T
for(int i=l;i<=r;i++){ qHNE8\9
temp=data; i/~1F_
} S}$r>[t
int i1=l; ms!r ef4`+
int i2=mid+1; e*bH0'; q
for(int cur=l;cur<=r;cur++){ ]4R[<<hd
if(i1==mid+1) q4}PM[K?=\
data[cur]=temp[i2++]; Qtbbb3m;
else if(i2>r) Ku\Y'ub
data[cur]=temp[i1++]; +n<k)E@>J
else if(temp[i1] data[cur]=temp[i1++]; qZ}P*+`Q
else F>]m 3(
data[cur]=temp[i2++]; uq,
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} 4'-|UPhx
} nBHnkbKoy
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} 3}@_hS"^8
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改进后的归并排序: 6oLwfTy
(9<guv
package org.rut.util.algorithm.support; Q$:![}[(
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import org.rut.util.algorithm.SortUtil; rS4@1`/R
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/** AC;V
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* @author treeroot u0#}9UKQ
* @since 2006-2-2 >.'<J]
* @version 1.0 \MjJ9u `8
*/ NPd%M
public class ImprovedMergeSort implements SortUtil.Sort { =JKv:</.G
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private static final int THRESHOLD = 10; /9zE^YcT
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/* Tszp3,]f
* (non-Javadoc) 34wkzu
* {dL?rQ>5L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 94 e):
jS
*/ "y_#7K
public void sort(int[] data) { %H]lGN)
int[] temp=new int[data.length]; X=Ys<TM,
mergeSort(data,temp,0,data.length-1); q^A+<d
} 3,]gEE3
H|ER
private void mergeSort(int[] data, int[] temp, int l, int r) { srYJp^sC
int i, j, k; ^bc;[x&N
int mid = (l + r) / 2; c%[#~;E
if (l == r) [Z~ 2
return; ithewup
if ((mid - l) >= THRESHOLD) LwhyE:1
mergeSort(data, temp, l, mid); )13dn]o=2
else $Bj;D=d@V
insertSort(data, l, mid - l + 1); -s|}Rh?Y
if ((r - mid) > THRESHOLD)
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mergeSort(data, temp, mid + 1, r); -jn WZ5.
else :.?gHF.?
insertSort(data, mid + 1, r - mid); om |"S
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for (i = l; i <= mid; i++) { \mw(cM#:
temp = data; 1fo
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} rp6q?3=g
for (j = 1; j <= r - mid; j++) { j6
temp[r - j + 1] = data[j + mid]; >IX/<
{);M
} )r[&RGz6
int a = temp[l]; <JV"@H=
int b = temp[r]; m8SA6Y\
for (i = l, j = r, k = l; k <= r; k++) { $&"V^@
if (a < b) { m!W3Cwz\&
data[k] = temp[i++]; PH*\AZJCl
a = temp; *J+_|_0nlW
} else { f m(e3]
data[k] = temp[j--]; hFk3[zTy
b = temp[j]; G NS`.fS
} 9_QP !,
} A8q;q 2
} 2MATpV#BT
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/** {0;3W7
* @param data iSFuT7;%
* @param l m$9w"8R
* @param i f+|$&p%
*/ xS7$%w['
private void insertSort(int[] data, int start, int len) { h.!}3\Y
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); =56T{N
} pSm $FBW h
} % ,N<
} 0<8XI>.3D
} jS;J:$>^
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堆排序: >yXN,5d[
2P]L9'N{Y
package org.rut.util.algorithm.support; CH
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import org.rut.util.algorithm.SortUtil; #-8\JEn
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/** n!')wIk
* @author treeroot Ja SI^go
* @since 2006-2-2 .`7cBsXH
* @version 1.0 =l.+,|ZH!
*/ [HN|\afz
public class HeapSort implements SortUtil.Sort{ D;I6Q1I
0W3i()
/* (non-Javadoc) (ZL sB{r^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A>[|g`;t
*/ a6:x"Tv
public void sort(int[] data) { 7@6g<"I
MaxHeap h=new MaxHeap(); 'kYwz;gp
h.init(data); .i^7|o:
for(int i=0;i h.remove(); X*Z8CM_
System.arraycopy(h.queue,1,data,0,data.length); gr-fXZO
} h?-#9<A
I+ es8
private static class MaxHeap{ xr7+$:>a
<" @zn
void init(int[] data){ vsL[*OeI
this.queue=new int[data.length+1]; ?88`fJ@tk?
for(int i=0;i queue[++size]=data; UxD5eJJ
fixUp(size); Kf 2jD4z}
} fK&e7j`qO
} @:tj<\G]
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private int size=0; be e5
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private int[] queue; RUr=fEH
[]0mX70N
public int get() { 6l$L~>
return queue[1]; lCF`*DM#
} `xiCm':
\m=?xb8
f
public void remove() { Z_gC&7+
SortUtil.swap(queue,1,size--); (Y+N@d
fixDown(1); (~$/$%b
} m~lpyAw
file://fixdown cEe?*\G
private void fixDown(int k) { *cTO7$\[
int j; 84i_k
while ((j = k << 1) <= size) { 3+J0!FVla
if (j < size %26amp;%26amp; queue[j] j++; v|ox!0:#
if (queue[k]>queue[j]) file://不用交换 ;f,c't@w
break; JbO ~n
)%x
SortUtil.swap(queue,j,k); ]#/4Y_d
k = j; }tPk@$
} m^_6:Q0F!8
} '!P"xBVAu
private void fixUp(int k) { DMF
-Y-h
while (k > 1) { c9j*n;Q
int j = k >> 1; N~g:Wf!
if (queue[j]>queue[k]) BZb]SoAL
break; n,~;x@=5
SortUtil.swap(queue,j,k); kkvtB<<Y
k = j; \([WH!7
} Z+pom7A"E
} p"*y58
NZN-^ >
} ^v9|%^ug
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} "4H8A=
$|$e%
SortUtil: |wox1Wt|E
8h<ehNX ^I
package org.rut.util.algorithm; $6F)R|
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import org.rut.util.algorithm.support.BubbleSort; tn|,O.t
import org.rut.util.algorithm.support.HeapSort; Jti(b*~
import org.rut.util.algorithm.support.ImprovedMergeSort; :Vg}V"QR
import org.rut.util.algorithm.support.ImprovedQuickSort; d bS
+
import org.rut.util.algorithm.support.InsertSort; /D_+{dtE
import org.rut.util.algorithm.support.MergeSort; `]$?uQ
import org.rut.util.algorithm.support.QuickSort; M+wt__vHf
import org.rut.util.algorithm.support.SelectionSort; #a| L3zR5v
import org.rut.util.algorithm.support.ShellSort; \Hqc9&0
n:U>Fj>q
/** 0Q5 93F
* @author treeroot DWt*jX *
* @since 2006-2-2 4$,,Ppn
* @version 1.0 qQxz(}REu9
*/ 0aR,H[r[?
public class SortUtil { JK#vkCkyM
public final static int INSERT = 1; Ufo>|A6;$
public final static int BUBBLE = 2; 5FC4@Ms`
public final static int SELECTION = 3; 2JmZ{
public final static int SHELL = 4; JNWg|Qt
public final static int QUICK = 5; K?#]("De6
public final static int IMPROVED_QUICK = 6; ,pK|SL
public final static int MERGE = 7; NHw x:-RH
public final static int IMPROVED_MERGE = 8; gM>=%/.
public final static int HEAP = 9; 4z:#I;
i.iio-
public static void sort(int[] data) { +Ra3bj l
sort(data, IMPROVED_QUICK); 8 _d-81Dd
} ">dq0gD
private static String[] name={ g^kx(p<u`
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ZX
b}91rzt
}; '#O_}|ZN
SW(q$i
private static Sort[] impl=new Sort[]{ K#K\-TR|$
new InsertSort(), &jV_"_3n
new BubbleSort(), lf>nbvp
new SelectionSort(), G>T')A
new ShellSort(), =QV::/
new QuickSort(), 7s'- +~
new ImprovedQuickSort(), 6S?x
D5(
new MergeSort(), kvsA]tK.
new ImprovedMergeSort(), >s*Drf X6
new HeapSort() ++[5q+b
}; vxN0,l
Em13dem
public static String toString(int algorithm){ Q
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return name[algorithm-1]; `GQ{*_-
} RE46k`44
6R}j-1
<n
public static void sort(int[] data, int algorithm) { a0Oe:]mo\
impl[algorithm-1].sort(data); NB8&
} 1M%S
gV-#
}4%/pOi:f
public static interface Sort { W^g[L:s
public void sort(int[] data); w,.qCp T$_
} ySdN;d:q
#Gv{UU$]
public static void swap(int[] data, int i, int j) { d<o.o?Vc
int temp = data; US? Rr
data = data[j]; ~el-*=<m
data[j] = temp; _JGs}aQ
} j kn^Z":
} I#A2)V0P)