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。 dIfy!B"
插入排序: 5|5p -B
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package org.rut.util.algorithm.support; c?N,Cd~q
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import org.rut.util.algorithm.SortUtil; }R11G9N.
/** WdH/^QvTP
* @author treeroot qVfl6q5
* @since 2006-2-2 K)U[xS;<
* @version 1.0 inip/&P?V
*/ Ss%1{s~ok
public class InsertSort implements SortUtil.Sort{ ~Up{zRD"B
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/* (non-Javadoc) zy5FO<->
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n*Uk<_WA
*/ .G#li(NWH
public void sort(int[] data) { hD=.rDvO
int temp; |c^ ?tR<
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }wkY`"
} <v'&Pk<
} )U=]HpuzI
} ]IE Z?+F,
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} ?U{<g,^
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冒泡排序: 2,wwI<=E'
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package org.rut.util.algorithm.support; <Se9aD
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import org.rut.util.algorithm.SortUtil; 'NZ=DSGIy
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/** xx(C$wCJ
* @author treeroot R<U]"4CBx
* @since 2006-2-2 $dF3@(p
* @version 1.0 BM`6<Z "3q
*/ 5dB62dqN
public class BubbleSort implements SortUtil.Sort{ ] |nW
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/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 15hqoo9!
*/ Fj(GyPFG
public void sort(int[] data) { px"H
int temp; X\/M(byn
for(int i=0;i for(int j=data.length-1;j>i;j--){ #-@uLc
if(data[j] SortUtil.swap(data,j,j-1); bMxK @$G~
} |-G2 pu;
} BjeD4
} 0~z\WSo
} X fqhD&g
fP V n;
} ?:ZB'G{%E
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选择排序: marZA'u%B1
Z Cjw)To(
package org.rut.util.algorithm.support; ]jFl?LA%7
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import org.rut.util.algorithm.SortUtil; RQb}t,
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/** Pal=I)
* @author treeroot OU"%,&J
* @since 2006-2-2 fj))Hnt(|
* @version 1.0 i5t6$|u:&m
*/ f+Sb>$
public class SelectionSort implements SortUtil.Sort { RGE(#
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/* 80wzn,o
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* (non-Javadoc) &8z<~q
* d.^g#&h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (XQuRL<X
*/ 6:O<k2=2
public void sort(int[] data) { Ca
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int temp; weSq|f
for (int i = 0; i < data.length; i++) { kB> ~Tb0
int lowIndex = i; IF|6iKCE
for (int j = data.length - 1; j > i; j--) { yjg&/6
if (data[j] < data[lowIndex]) { 6FQi=}O 1
lowIndex = j; 52dD(
} Z(T{K\)uN
} RHg-Cg`
SortUtil.swap(data,i,lowIndex); . \"k49M`
} 0{|HRiQH9+
} k=hWYe$iAz
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} odsFgh
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Shell排序: \ph.c*c
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package org.rut.util.algorithm.support; =O![>Fu5
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import org.rut.util.algorithm.SortUtil; lGl'A}]#$
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/** ~0a5
* @author treeroot &(rWl`eTY`
* @since 2006-2-2 i(^U<DW$
* @version 1.0 {P]C>
*/ b.&WW
public class ShellSort implements SortUtil.Sort{ rtRbr_
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/* (non-Javadoc) &)%+DUV|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H<Oo./8+
*/ _*fNa!@hY
public void sort(int[] data) { VN0We<\Z
for(int i=data.length/2;i>2;i/=2){ CwA_jOp
for(int j=0;j insertSort(data,j,i); /i'078F
} \=AA,Il
} \ ;npdFy
insertSort(data,0,1); ,vJt!}}
} HYmC3
l%0bF9\
/** " B#|C'
* @param data QO/0VB42
* @param j 50W+!'
* @param i ["Ltqgx
*/ 6lSz/V;
private void insertSort(int[] data, int start, int inc) { CWn\KR
int temp; sU ZA!sv
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); EiL#Dwx
} xc:E>-
} PgWWa*Ew
} 9CY{}g
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} <W80A J
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快速排序: cqS :Zq
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package org.rut.util.algorithm.support; J:L+q}A
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import org.rut.util.algorithm.SortUtil; AK2Gm-hHK
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/** L*(9Hti
* @author treeroot p,Ff,FfH
* @since 2006-2-2 q@|+`>h
* @version 1.0 n/+X3JJ
*/ W$rWg>4>
public class QuickSort implements SortUtil.Sort{ ~RhUg~o
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/* (non-Javadoc) py*22Ua^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Dcl$?
*/
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public void sort(int[] data) { !Zz;;Z
quickSort(data,0,data.length-1); K}~$h,n
} 1i76u!{U
private void quickSort(int[] data,int i,int j){ _ E;T"SC
int pivotIndex=(i+j)/2; Zv u6/#
file://swap Z/#_Swv
SortUtil.swap(data,pivotIndex,j); w,LtQhQ
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int k=partition(data,i-1,j,data[j]); O
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SortUtil.swap(data,k,j); m[9.'@ye
if((k-i)>1) quickSort(data,i,k-1); 06&J!,p
:
if((j-k)>1) quickSort(data,k+1,j); :C~Ar]
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} 5)k8(kH
/** uN|A}/hr]
* @param data `g)}jo`W
* @param i d7OygDb <
* @param j MMM
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* @return 7L{1S
v
*/ `ONjEl
private int partition(int[] data, int l, int r,int pivot) { m>@hh#kBg
do{ AM}R#86
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); e~o!Qm
SortUtil.swap(data,l,r); u6qK4*eAD
} ]?eZDf~
while(l SortUtil.swap(data,l,r); 4CNrIF@
return l; ALF0d|>=uj
} /WrB>w
f98,2I(>`+
} |3*9+4]a
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改进后的快速排序: sVLvnX,
m|a9T#B(
package org.rut.util.algorithm.support; :RaQ
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import org.rut.util.algorithm.SortUtil; (o^tmH*
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/** {keZ_2
* @author treeroot 1|bXIY.J*
* @since 2006-2-2 +#}GmUwPG$
* @version 1.0 eA/n.V$z
*/ $@g]?*L:
public class ImprovedQuickSort implements SortUtil.Sort { B VBn.ut
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private static int MAX_STACK_SIZE=4096; R=D]:u<P
private static int THRESHOLD=10; Njq}M/{U
/* (non-Javadoc) o-,."|6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YB#fAU
*/ =$>=EBH,cm
public void sort(int[] data) { `+7F H
int[] stack=new int[MAX_STACK_SIZE]; 615Ya<3f8
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int top=-1; ks405
int pivot; wj)LOA0
int pivotIndex,l,r; vB:\ZX4
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stack[++top]=0; wwUI ;g
stack[++top]=data.length-1; *}?[tR5
j6
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while(top>0){ X\}l" ]
int j=stack[top--]; R+ * ; [
int i=stack[top--]; pwFp<O"
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pivotIndex=(i+j)/2; -^_m(@A<~
pivot=data[pivotIndex]; "F
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SortUtil.swap(data,pivotIndex,j); E$d#4x
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file://partition &5CRXf
l=i-1; 5ut| eD`3
r=j; nL@'??I1
do{ mypV[
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); BI'>\hX/V
SortUtil.swap(data,l,r); cc@W
6W
} LC%ococ
while(l SortUtil.swap(data,l,r); -IPo/?}
SortUtil.swap(data,l,j); <r%K i`u(p
+;N]34>S7
if((l-i)>THRESHOLD){ Q@D7\<t
stack[++top]=i; VtBC~?2U)B
stack[++top]=l-1; YIQD9
} d?,'$$ aB
if((j-l)>THRESHOLD){ xc^@"
stack[++top]=l+1; asWk]jjMG
stack[++top]=j; "<,lqIqA;
} N5Js.j>z
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} z7K{ ,y
file://new InsertSort().sort(data); Q$%apL
insertSort(data); C$[d~1t6
} d&AG~,&d|
/** Nx}nOm
* @param data i8iT}^
*/ x|H`%Z
private void insertSort(int[] data) { bA;OphO(
int temp; a:FU- ^B4~
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); O-?rFNavxp
} IH|zNg{\Y
} TI>5g(:3\
} r\NqY.U&
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} |v&)O)Jg
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归并排序: Tz
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package org.rut.util.algorithm.support; K'A+V
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import org.rut.util.algorithm.SortUtil; |9*Rnm_
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/** ?<?Ogq"<
* @author treeroot c%&,(NJ]K
* @since 2006-2-2 g~lv/.CnA+
* @version 1.0 "?"
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*/ YteIp'T
public class MergeSort implements SortUtil.Sort{ _4{0He`q
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/* (non-Javadoc) ~9 >H(c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \GFqRRn
*/ =RoE=)1&-
public void sort(int[] data) { r!r08yf
int[] temp=new int[data.length]; xfk
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mergeSort(data,temp,0,data.length-1); ($di]lbsT
} corm'AJ/
|J$A%27
private void mergeSort(int[] data,int[] temp,int l,int r){ ]_KWN$pd
int mid=(l+r)/2; vYgJu-Sl
if(l==r) return ; /[R=-s ;
mergeSort(data,temp,l,mid); inu.U[.
mergeSort(data,temp,mid+1,r); HQ-[k$d
W4
for(int i=l;i<=r;i++){ aDS:82GMQ
temp=data; lrrTeE*
} *G"hjc$L
int i1=l; d i\.*7l?
int i2=mid+1; }7PJr/IuF
for(int cur=l;cur<=r;cur++){ ;,y_^-h;
if(i1==mid+1) 1+%UZK= K
data[cur]=temp[i2++]; .k#PrT1C
else if(i2>r) y?sz&*:
data[cur]=temp[i1++]; ZCCCuB
else if(temp[i1] data[cur]=temp[i1++]; dc$zW^i
else \f,<\mJ#
data[cur]=temp[i2++]; }8'_M/u\
} LkbD='\=
} ]TvMT
j.M]F/j
} 757&bH|a
l)r\SE1
改进后的归并排序: y-pdAkDh
|nMjv]#
package org.rut.util.algorithm.support; 01(U)F\
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import org.rut.util.algorithm.SortUtil; uQ=u@qtp
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/** k>i88^kPV
* @author treeroot S|tD8A
* @since 2006-2-2 3M#x)cW
* @version 1.0 "&_+!TBg,
*/ HT7,B(.}
public class ImprovedMergeSort implements SortUtil.Sort { 1wgL^Qz@
v.ZUYa|
private static final int THRESHOLD = 10; GRc)3
2,
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/* \`.v8C>vG
* (non-Javadoc) &r,vD,
* EU(e5vO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C(>!?-.
*/ [8u9q.IZ
public void sort(int[] data) { f2.=1)u.
int[] temp=new int[data.length]; 2Z; !N37U
mergeSort(data,temp,0,data.length-1); "P7OD^(x/
} 9Og
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private void mergeSort(int[] data, int[] temp, int l, int r) { WUS%4LL(
int i, j, k; yLRe'5#m
int mid = (l + r) / 2; 0>[]Da}
if (l == r) T
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return;
b>5*G1
if ((mid - l) >= THRESHOLD) D;sG9Hky
mergeSort(data, temp, l, mid); 0hY3vBQ!
else yp~z-aRa
insertSort(data, l, mid - l + 1); ~n -N
if ((r - mid) > THRESHOLD) gmp@ TY=:L
mergeSort(data, temp, mid + 1, r); @tT`s^e
else ru:"c^W:[
insertSort(data, mid + 1, r - mid); G[}v?RLI
mJ%^`mrI
for (i = l; i <= mid; i++) { <*vR_?!
temp = data; &D<6Go/)_*
} >p&"X 2
@
for (j = 1; j <= r - mid; j++) { VjM/'V5
temp[r - j + 1] = data[j + mid]; JCH9~n.
} UV(`.
int a = temp[l]; x@X2r
int b = temp[r]; h<L_ =)lH
for (i = l, j = r, k = l; k <= r; k++) { a>C;HO
if (a < b) { :@(1~Hm
data[k] = temp[i++]; 6TRLHL~B
a = temp; 2UQF:R?LQ
} else { Zx8$M5
data[k] = temp[j--]; iKq_s5|sW
b = temp[j]; "yymnIQ3u
} (jKqwVs.:
} 8B ,S_0!
} G!%m~+",
"9s}1C; Me
/** x~k3kj
* @param data ESviWCh0Fl
* @param l JbEEI(Q>g
* @param i c,#=In2
*/ eNfH9l2k
private void insertSort(int[] data, int start, int len) { 5H'Iul<Os
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ,b^Y8_ltoT
} 5]mH.{$x$?
} HRTNIx
} Qfp4}a=
} ^5Y<evjm
7(5d$ W
堆排序: ]prw=rD
E2l"e?AN~
package org.rut.util.algorithm.support; WiH8j$;xu
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import org.rut.util.algorithm.SortUtil; aP (~l_
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/** N?3p,2
* @author treeroot !UT!PX)
* @since 2006-2-2 2V8"jc
* @version 1.0 e O~p"d-|
*/ Ju5Dd\
public class HeapSort implements SortUtil.Sort{ EFiVwH
$Ptl&0MN%
/* (non-Javadoc) gHgqElr(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C{U*{0}
*/ '`tFZfT
public void sort(int[] data) { ty[%:eG#
MaxHeap h=new MaxHeap(); Ud"_[JtGM
h.init(data); <|'ETqP<+
for(int i=0;i h.remove(); mR2"dq;U
System.arraycopy(h.queue,1,data,0,data.length); #Br`;hL<T
} ZYB5s~;eB"
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private static class MaxHeap{ f2tCB1[D+
+% <kcc3
void init(int[] data){ ZK?V{X{";
this.queue=new int[data.length+1]; |5(CzXR]
for(int i=0;i queue[++size]=data; Lww&[|k.
fixUp(size); ,aWI&ve6
} %-YWn`yEm
} G;u 6p
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private int size=0; f7zB_hVDmE
V(XU^}b#
private int[] queue; g[y&GCKY!=
Ce//;Op
public int get() { @@a#DjE%/
return queue[1]; Bd*Ok]
} ^69(V LK
TN Z-0
public void remove() { Y8}y0]V
SortUtil.swap(queue,1,size--); 9k4z__K e
fixDown(1); p Dg!Cs
} io"NqR#"v
file://fixdown XiV*d06{
private void fixDown(int k) { J*ofa>
int j; lX.1B&T9Lr
while ((j = k << 1) <= size) { |-v/
if (j < size %26amp;%26amp; queue[j] j++; UU}Hs}
if (queue[k]>queue[j]) file://不用交换 A?-t`J
break; d:Z|It
SortUtil.swap(queue,j,k); )-XD=
]
k = j; 8xj_)=(sV!
} )4ok@^.
} {
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private void fixUp(int k) { F:Vl\YZ
while (k > 1) { , iEGf-!k
int j = k >> 1; 8~!h8bkC
if (queue[j]>queue[k]) f&F9ImZ
break; >y}> 5kv
SortUtil.swap(queue,j,k); 7u1o>a%9
k = j; hQ)?LPUB
} Yjy%MR
} |Eu#mN
Q(WfWifu-|
}
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_x-2tnIxXv
} D41.$t[
}WR@%)7ay
SortUtil: ~urk
Uz
;Srzka2
package org.rut.util.algorithm; e*<pO@Uy
nbw8YO(=
import org.rut.util.algorithm.support.BubbleSort; t[({KbIy
import org.rut.util.algorithm.support.HeapSort; ?<OE|nb&
import org.rut.util.algorithm.support.ImprovedMergeSort; p-oEoA
import org.rut.util.algorithm.support.ImprovedQuickSort; D1]?f`
import org.rut.util.algorithm.support.InsertSort; 8XfOMf~d`
import org.rut.util.algorithm.support.MergeSort; svCm}`
import org.rut.util.algorithm.support.QuickSort; EAs^i+/
import org.rut.util.algorithm.support.SelectionSort; RR`\q>|
import org.rut.util.algorithm.support.ShellSort; zYis~+
D.F1^9Q
/** 3ug>,1:6-
* @author treeroot
1[Q~&QC
* @since 2006-2-2 W$}2
$}r0U
* @version 1.0 9y\Ik/
*/ UOe@R|79q
public class SortUtil { M(} T\R
public final static int INSERT = 1; + >tSO!}[
public final static int BUBBLE = 2; ,]@Sytky
public final static int SELECTION = 3; t,~feW,
public final static int SHELL = 4; Ch=jt*0
public final static int QUICK = 5; +nYF9z2
public final static int IMPROVED_QUICK = 6; 47&p*=
public final static int MERGE = 7; | m#"
public final static int IMPROVED_MERGE = 8; uE#"wm'J
public final static int HEAP = 9; 0LWV.OIIC
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public static void sort(int[] data) { [7{cf`C
sort(data, IMPROVED_QUICK); <UW-fI)X
} n2opy8J#!
private static String[] name={
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"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" SphP@J<ONW
}; w\JTMS$
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private static Sort[] impl=new Sort[]{ -9 |)O:
new InsertSort(), 4?`*#DPl
new BubbleSort(), @Y%i`}T%(
new SelectionSort(), p13y`sU=
new ShellSort(), [xDn=)`{V
new QuickSort(), C7l4X8\w
new ImprovedQuickSort(), }F_=.w0
new MergeSort(), )uCa]IR
new ImprovedMergeSort(), @Bsvk9}
new HeapSort() J32"Ytdo<
}; RHI?_gf&
y<ZT~e
public static String toString(int algorithm){ ur+ \!y7^R
return name[algorithm-1]; Z(ToemF)hi
} <@c9S,@t
qwuA[QkPi
public static void sort(int[] data, int algorithm) { No'Th7=|S
impl[algorithm-1].sort(data); xy^z_`
} kc[<5^b5
q$B|a5a?
public static interface Sort { pQCW6X
public void sort(int[] data); _ o6Zj1p
} ib(4Y%U6~
7]
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public static void swap(int[] data, int i, int j) { K!tM "`a
int temp = data; 5BM rn0
data = data[j]; ;C5
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data[j] = temp; ](k}B*Abh
} kI~;'M
} ?2S<D5MSb