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。 0 a]/%y3V
插入排序: syU9O&<
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package org.rut.util.algorithm.support; go+Q~NV
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import org.rut.util.algorithm.SortUtil; H|cNH=
/** eC5 $#,HiC
* @author treeroot ^pM+A6
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* @since 2006-2-2 + <,gB $j
* @version 1.0 NmMIQ@K
*/ ;8!Z5H
public class InsertSort implements SortUtil.Sort{ %uv?we7
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/* (non-Javadoc) .2J
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VMoSLFp^R
*/ jx acg^c
public void sort(int[] data) { v]__%_
int temp; ?+T^O?r|O
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >]o}}KF?
} .0R v(Y
} \om%Q[F7a
} {3N'D2N
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} OL_{_K(w
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冒泡排序: 0%!rx{f#\
RwS@I/
package org.rut.util.algorithm.support; Y>jiXl?&
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import org.rut.util.algorithm.SortUtil; ;3_l@dP"
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/** :eo
* @author treeroot CK,
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* @since 2006-2-2 {'16:dTJ
* @version 1.0 '!f5?O+E
*/ R |KD&!~Z
public class BubbleSort implements SortUtil.Sort{ 9&RFO$WH
29XL$v],
/* (non-Javadoc) ?FfC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nQ|r"|g
*/ r\nx=
public void sort(int[] data) { ie-vqLc
int temp; zE;bBwy&
for(int i=0;i for(int j=data.length-1;j>i;j--){ Be+0NXLVy
if(data[j] SortUtil.swap(data,j,j-1); %e*@CbO$
} 5Sk W-+$
} !mXxAo
} }w4QP+ x
} \M'-O YH_[
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} m7T)m0
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选择排序: #07g d#j4
:!zl^J;
package org.rut.util.algorithm.support; $=?@*p
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import org.rut.util.algorithm.SortUtil; /c):}PJ^#7
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/** PqM1aoyX
* @author treeroot )}9rwZ
* @since 2006-2-2 9W5onn
* @version 1.0 t43)F9!
*/ <3,<\ub
public class SelectionSort implements SortUtil.Sort { b,8{ X<
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/* _HhbIU
* (non-Javadoc) "vtCTl~t
* NH_<q"gT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !nAX$i~
*/ E c s,$\
public void sort(int[] data) { %v2R.?F8
int temp; H(Eh c
for (int i = 0; i < data.length; i++) { I@\OaUGr+
int lowIndex = i; BC'llD
for (int j = data.length - 1; j > i; j--) { s`>[F@N7.o
if (data[j] < data[lowIndex]) { [5Lz/ix=
lowIndex = j; 9P{;HusNw
} ?ve#} \
} {\[5}nV
SortUtil.swap(data,i,lowIndex); G\TfL^A
} ^]
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} O#Wh
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} ]r_;dY a
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Shell排序: "Ky; a?Y
n("0%@ov
package org.rut.util.algorithm.support; LY-2sa#B$-
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import org.rut.util.algorithm.SortUtil; 9uWY@zu
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/** Zdn~`Q{
* @author treeroot ;j2vHU#q-
* @since 2006-2-2 2U-3Q]/I}
* @version 1.0 LiKxq=K
*/ %Z*sU/^
public class ShellSort implements SortUtil.Sort{ ;t+ub8
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/* (non-Javadoc) jMpD+Mb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <I"S#M7-s
*/ U#U]Pt
public void sort(int[] data) { SB)5@
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for(int i=data.length/2;i>2;i/=2){ ^i:B+
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for(int j=0;j insertSort(data,j,i); hdVdcnM
} <jed!x
} dXnl'pFS
insertSort(data,0,1); Gm\/Y:U
} Gdg"gi!4
v%ioj0,
/** 3N_"rNKD
* @param data Bp@v,)8*
* @param j a+Ac[>
* @param i : >>@rF ,
*/ 'R_g">B.
private void insertSort(int[] data, int start, int inc) { 4Fm90O
int temp; NB<A>baL*
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 2+X\}s1vN
} *E{2J:`
} \_B[{e7z
} %RDI!e<e}
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} 7NJhRz`_
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快速排序: O|w J)
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package org.rut.util.algorithm.support; %dY<=x#b
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import org.rut.util.algorithm.SortUtil; yiO.z
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/** []D@Q+1
* @author treeroot 2p"WTd
* @since 2006-2-2 p/h
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* @version 1.0 5L!y-3
*/ tToTxf~
public class QuickSort implements SortUtil.Sort{ 7nuU^wc
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/* (non-Javadoc) |6<p(i7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L`24?Y{
*/ J_;o|gqX
public void sort(int[] data) { ? YG)I;(
quickSort(data,0,data.length-1); |iwP:C^\mJ
} _]:z \TDn
private void quickSort(int[] data,int i,int j){ #_u~/jhX
int pivotIndex=(i+j)/2; Hhh0T>gi
file://swap KRA/MQ^7~U
SortUtil.swap(data,pivotIndex,j); BT(CM,bp
rOVVL%@QqJ
int k=partition(data,i-1,j,data[j]); [ 1u-Q%?#
SortUtil.swap(data,k,j); Gn&4V}F
if((k-i)>1) quickSort(data,i,k-1); !@v7Zu43,
if((j-k)>1) quickSort(data,k+1,j); p3^m9J
ynrT a..
} ^U!0-y
/** 4F{70"a
* @param data yNTK .
* @param i ej"+:."\e
* @param j 0vw4?>Jf@
* @return VTH>
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*/ j*vYBGD
private int partition(int[] data, int l, int r,int pivot) { #Q
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do{ sQ\8>[]
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); *Em,*!
SortUtil.swap(data,l,r); ,KFapz!
} tdu$pC6
while(l SortUtil.swap(data,l,r); p }~qf
return l; % oo2/aF
} _FWBUZ;N
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} .Fp4:
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改进后的快速排序: pS7w' H
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package org.rut.util.algorithm.support; v%iflCK
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import org.rut.util.algorithm.SortUtil; @qYp>|AF
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/** @
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* @author treeroot %B.yW`,X
* @since 2006-2-2 %xyou:~0zs
* @version 1.0 b"{'T]"*j
*/ N=7pK&NHSG
public class ImprovedQuickSort implements SortUtil.Sort { k-^mIJo}
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private static int MAX_STACK_SIZE=4096; 6g)GY"49
private static int THRESHOLD=10; ,JQp'e
/* (non-Javadoc) ]'=)2
.}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W}mn}gTQ
*/ >: g3k
public void sort(int[] data) { 6l:qD` _
int[] stack=new int[MAX_STACK_SIZE]; D-._z:_
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int top=-1; 7](KV" %V
int pivot; Xx>X5Fy
int pivotIndex,l,r; pWJFz-
V:
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stack[++top]=0; L bmawi^
stack[++top]=data.length-1; JVSA&c%3
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while(top>0){ "[ZB+-|[0
int j=stack[top--]; /x
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int i=stack[top--]; }xh$T'M8
oc >{?.^
pivotIndex=(i+j)/2; ,1+y/{S
pivot=data[pivotIndex]; _dhgAx-H)h
#;2n;.a
SortUtil.swap(data,pivotIndex,j); 8p:e##%
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file://partition MjC_ ( cs
l=i-1; F}/S:(6LF2
r=j; o9dY9o+Z
do{ /~$WUAh
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); abfW[J
SortUtil.swap(data,l,r); /Y2}a<3&0
} U ^5Kz-5.
while(l SortUtil.swap(data,l,r); _ =VqrK7T
SortUtil.swap(data,l,j); vkEiOFU!u
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if((l-i)>THRESHOLD){ T~##,qQ
stack[++top]=i; ;"~
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stack[++top]=l-1; x#xFh0CA
} :Ra,Eu
if((j-l)>THRESHOLD){ =*c7i]@}
stack[++top]=l+1; .7avpOfz
stack[++top]=j; #PH~1`vl
} IS &ZqE(`e
NUWDc]@J*
} =k^Y?.
file://new InsertSort().sort(data); po2!
insertSort(data); %D%8^Zd_
} biU^[g("
/** OX?\<),
* @param data ij( B,Y
*/ |8l<$J
private void insertSort(int[] data) { @v)p<r^M">
int temp; :2rZcoNb.
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8"8t-E#?
} oldA#sA$
} Ki$MpA3j
} &-Gqdnc
Pama#6?OPh
} qGB{7-r u
iW%I|&
归并排序: H2jgO?l;!
AicBSqUke
package org.rut.util.algorithm.support; 3yU.& k
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import org.rut.util.algorithm.SortUtil; lvBx\e;7P
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/** jD<{t
* @author treeroot g4=pnK8
* @since 2006-2-2 /-_h1.!
* @version 1.0 )f[
B6Y
*/ = C8 ?M
public class MergeSort implements SortUtil.Sort{ EIf5(/jo
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/* (non-Javadoc) KyYM fC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gM
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*/ g"p%C:NN
public void sort(int[] data) {
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int[] temp=new int[data.length]; =JK@z
mergeSort(data,temp,0,data.length-1); 8QLj["
} NV72
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private void mergeSort(int[] data,int[] temp,int l,int r){ (a.z9nqGA
int mid=(l+r)/2; w[zjerH3
if(l==r) return ; =hC,@R>;
mergeSort(data,temp,l,mid); 93("oBd[s(
mergeSort(data,temp,mid+1,r); [65`$x-
for(int i=l;i<=r;i++){ ~962i#&4
temp=data; ao1(]64X"
} 8*#R]9
int i1=l; 1PQ~jfGi
int i2=mid+1; ;=eDO(Ij
for(int cur=l;cur<=r;cur++){ 7Bzq,2s
if(i1==mid+1) RKHyw08
data[cur]=temp[i2++]; Ai=se2
else if(i2>r) cl[BF'.H
data[cur]=temp[i1++]; &:9cAIe]H
else if(temp[i1] data[cur]=temp[i1++]; O`x;,6Vr
else /YW>*?"N
data[cur]=temp[i2++]; ZM!CaR
} }Z@ovsG
} y&q*maa[
=n5zM._S-
} ,
pDnRRJ!
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改进后的归并排序: 0%&1\rm+j
;f0I
8i,JN
package org.rut.util.algorithm.support; tZ:_ag)o
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import org.rut.util.algorithm.SortUtil; m4hX 'F
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/** A-Sv;/yD_
* @author treeroot !;&p"E|b#
* @since 2006-2-2 &gVN&
* @version 1.0 'y;EhOwj,
*/ BZ94NOOdw
public class ImprovedMergeSort implements SortUtil.Sort { :~b3^xhc^
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private static final int THRESHOLD = 10; jSD#X3qp
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/* eJF5n#
* (non-Javadoc) hm84Aq= f
* KyVQh8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yzbx .
*/ Fsmycr!R
public void sort(int[] data) { "cE7
5
int[] temp=new int[data.length]; x[wq]q#*
mergeSort(data,temp,0,data.length-1); SN9kFFIPb=
} 4x{0iav
N=4G=0 `ke
private void mergeSort(int[] data, int[] temp, int l, int r) { y6ECdVF
int i, j, k; A;;fACF8e
int mid = (l + r) / 2; F3N?Nk/
if (l == r) *rM^;4Zt
return; ;kFDMuuO
if ((mid - l) >= THRESHOLD) 6LOnU~l,
mergeSort(data, temp, l, mid); Buf/@B7+\
else hEA<o67
insertSort(data, l, mid - l + 1); j#X.KM
if ((r - mid) > THRESHOLD) o1-m1 <ft
mergeSort(data, temp, mid + 1, r); \s/s7y6b+
else
#zG&|<hc
insertSort(data, mid + 1, r - mid); `n#H5Oyn
<Y*+|T+&d
for (i = l; i <= mid; i++) { 8>trS=;n
temp = data; ]9YJ,d@J
} o9|nJ;
for (j = 1; j <= r - mid; j++) { NaPt"G
temp[r - j + 1] = data[j + mid]; M`. tf_x
} sNj)ZWgd>
int a = temp[l]; Uddr~2%(
int b = temp[r]; J}htu
for (i = l, j = r, k = l; k <= r; k++) { Hc!
mB
if (a < b) { ?^H
`M|S
data[k] = temp[i++]; d:ARf
a = temp; ))R5(R
} else { I(]}XZq
data[k] = temp[j--]; Q;[,Q~c[u
b = temp[j]; !Z`j2
e}
} E.r>7`E
} )LdP5z-
} w:%o?pKet1
u5O+1sZ"6
/** 6 )Hwt_b
* @param data qS403+Su1=
* @param l '= _/ 1F*q
* @param i = 6tHsN23
*/ )`SES."
private void insertSort(int[] data, int start, int len) { Qt iDTr
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); E%+Dl=
} RS"H8P4W
} ks3`3q 7
} LUG;(Fko
} V_C-P[2~
vqnw#U4`
堆排序: ~Fe${2
~res V
package org.rut.util.algorithm.support; ?Y)vGlWDW<
03xa'Of>
import org.rut.util.algorithm.SortUtil;
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/** kQ4dwF~
* @author treeroot r>dwDBE
* @since 2006-2-2 IYqBQnX}oM
* @version 1.0 Tu@8}C
*/ * 1T&
public class HeapSort implements SortUtil.Sort{ {n(b{ibl
4oK?-|=?
/* (non-Javadoc) Wc,_RN-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /+8JCp
*/ ~1cnE:x;V
public void sort(int[] data) { `D>S;[~S7
MaxHeap h=new MaxHeap(); 1)9sf0LyU
h.init(data); y]2qd35u_A
for(int i=0;i h.remove(); Cnnh7`
System.arraycopy(h.queue,1,data,0,data.length); @'YS1 N<
} 8
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@WJgWJm
private static class MaxHeap{ xHoKo
7bqBk,`9
void init(int[] data){ if}-_E<F
this.queue=new int[data.length+1]; x6(~;J
for(int i=0;i queue[++size]=data; lFa02p0
fixUp(size); =2Bg9!zW>
} :Nu^
} wyp|qIS;
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private int size=0; S7=Bd[4
"vXxv'0\f
private int[] queue; -9"['-WH,
`n$I]_}/%
public int get() { F_Z- 8>P
return queue[1]; /[O(ea$U
} %T X@I$Ba
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public void remove() { W)9K`hM6
SortUtil.swap(queue,1,size--); UQ'\7OS
fixDown(1); O_$m!5ug
} 7#@cz5Su
file://fixdown W.z;B<
private void fixDown(int k) { 9l}FU$
int j; TftHwe):V
while ((j = k << 1) <= size) { HU%o6c w
if (j < size %26amp;%26amp; queue[j] j++; W- i&sUgy
if (queue[k]>queue[j]) file://不用交换 kHXL8k#T
break; hZh9uI7.
SortUtil.swap(queue,j,k); GN-mrQo
k = j; v[#9+6P=
} XpmS{nb
} CF+_/s#j^
private void fixUp(int k) { io,M{Ib
while (k > 1) { CK:y?
int j = k >> 1; ObLly%|i
if (queue[j]>queue[k]) .jS~By|r
break; an4GSL
SortUtil.swap(queue,j,k); 1&^MfP}
k = j; /J04^6
} [QMu2
} I?"q/Ub~h
:>D[n1v
} Vnx,5E&
&07]LF$]
} D|rFu
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SortUtil: ~n[xtWO0
]Tkc-ez
package org.rut.util.algorithm; 2kdC]|H2?
M&NB/
import org.rut.util.algorithm.support.BubbleSort; IB#
@yH
import org.rut.util.algorithm.support.HeapSort; vz^<YZMu
import org.rut.util.algorithm.support.ImprovedMergeSort; x%+aKZ(m)
import org.rut.util.algorithm.support.ImprovedQuickSort; o4*+T8[|5
import org.rut.util.algorithm.support.InsertSort; }b=}uiR#
import org.rut.util.algorithm.support.MergeSort; "*LD 3
import org.rut.util.algorithm.support.QuickSort; tjGd )
import org.rut.util.algorithm.support.SelectionSort; mjWU0Gh%*
import org.rut.util.algorithm.support.ShellSort; X5X?&* %{
FDVcow*] n
/** H2
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* @author treeroot 3l3+A+n
* @since 2006-2-2 `}BF${vF
* @version 1.0 e*bH0'; q
*/ z;A>9vQ_J
public class SortUtil { slg ]#Dy
public final static int INSERT = 1; F1jglH/MF)
public final static int BUBBLE = 2; ;QW3CEaUq
public final static int SELECTION = 3; /e]'u&a
public final static int SHELL = 4; Gm9hYhC8
public final static int QUICK = 5; " R-!(9k^`
public final static int IMPROVED_QUICK = 6; ^
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public final static int MERGE = 7;
fv`O4
public final static int IMPROVED_MERGE = 8; P(XaTU&-
public final static int HEAP = 9; 6oLwfTy
?t+5s]
public static void sort(int[] data) { p/U+0f
sort(data, IMPROVED_QUICK); yU8{i&w4
} oS7(s
private static String[] name={ >.'<J]
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" tID%}Z v
}; *+uHQgn(
/9zE^YcT
private static Sort[] impl=new Sort[]{ ep=qf/vd<
new InsertSort(), C4hx@abA
new BubbleSort(), 94 e):
jS
new SelectionSort(), QHWBAGA
new ShellSort(), UTf9S>HS
new QuickSort(), 3,]gEE3
new ImprovedQuickSort(), /[ 6j)HIS
new MergeSort(), 7ULqo>j
new ImprovedMergeSort(), 05snuNt]-
new HeapSort() txcf=)@>V
}; /F4pb]U!*
] )F7)
public static String toString(int algorithm){ B*~5)}1op
return name[algorithm-1]; FL8g5I
} F29va
AgRjr"hF*e
public static void sort(int[] data, int algorithm) { ^)?d6nI
impl[algorithm-1].sort(data); j:,NE(DF
} Pl<;[cB
@FC"nM
public static interface Sort { wWSdTLX
public void sort(int[] data); !A>z(eIsv`
} 'Fs)Rx}\0
l#lF
+Q;
public static void swap(int[] data, int i, int j) { zOV=9"~{
int temp = data; N gLU$/y;
data = data[j]; \~BDm
data[j] = temp; N? 5x9duK
} kl"+YF5/
} Up:<=Kgci