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。 8725ET
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插入排序: Pk)>@F<
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package org.rut.util.algorithm.support; v{tw ;Z#
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import org.rut.util.algorithm.SortUtil; #s%_ L
/** IqD;*
* @author treeroot ePLpGT
* @since 2006-2-2 iX
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* @version 1.0 }Y9= 3X
*/ x6N)T4J(
public class InsertSort implements SortUtil.Sort{ |0^~S
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/* (non-Javadoc) FglW|Hwy
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .! 'SG6 q
*/ MEKsL7
public void sort(int[] data) { VO
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int temp; f(SK[+aqW
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); gZ!q
} x#)CH}J
} m!#'4
} f
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} 3:wN^!A}ve
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冒泡排序: 3mP251"dIW
2J;_9
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package org.rut.util.algorithm.support; ,9~=yC
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import org.rut.util.algorithm.SortUtil; b';oFUU>Q
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/** ^GL>xlZ(
* @author treeroot j; TXZ`|(
* @since 2006-2-2 kD*r@s]=
* @version 1.0 1buVV]*~
*/ tXXnHEz
public class BubbleSort implements SortUtil.Sort{ ]Y;5U
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/* (non-Javadoc) $Sls9H+.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;]vJ[mi~
*/ 3%~c\naD?O
public void sort(int[] data) { O
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int temp; &)
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for(int i=0;i for(int j=data.length-1;j>i;j--){ 6Cj$x.-K
if(data[j] SortUtil.swap(data,j,j-1); n F1}?
} ~CX1WPMI:
} K6Z/
} }t%2giJ
} pE4yx5r5
}j`#s
} _<^mi!Y
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选择排序: z{m%^,Cs,
eHE?#r16Z
package org.rut.util.algorithm.support; XP%/*am
IoKN.#;^
import org.rut.util.algorithm.SortUtil; _jWGwO
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/**
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* @author treeroot *e,GXU@
* @since 2006-2-2 {ovW6#
* @version 1.0 bDtb"V8e
*/ %LjhK,'h
public class SelectionSort implements SortUtil.Sort { .dPy<6E
XlJA}^e
/* Um%$TGw5
* (non-Javadoc) 5c
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* X+KQ%Efo
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v{8W+
*/ AGGNJ4m
public void sort(int[] data) { Xn6'*u>+;[
int temp; #Y<QEGb(
for (int i = 0; i < data.length; i++) { zBjbH=
int lowIndex = i; |V-)3#c
for (int j = data.length - 1; j > i; j--) { PblO?@~O
if (data[j] < data[lowIndex]) { ;&9wG`
lowIndex = j; %X -G(Z
} }rA
_4%
} FR^(1+lx&
SortUtil.swap(data,i,lowIndex); *f-8egt-
} ]k)h<)nY
} v43FU3
:{=2ih-}
} \5DOp-2
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Shell排序: K<E|29t^k
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package org.rut.util.algorithm.support; AQgagE^
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import org.rut.util.algorithm.SortUtil; j|owU
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/** 1X-fiQJe
* @author treeroot @+&QNI06S
* @since 2006-2-2 C^ 1;r9
* @version 1.0 <IwfiI3y
*/
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public class ShellSort implements SortUtil.Sort{ |5g1D^b]s^
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/* (non-Javadoc) +Z/aB*aVa^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iM_Zn!|@\
*/ :O9i:Xq[QW
public void sort(int[] data) { mvXIh";
for(int i=data.length/2;i>2;i/=2){ ' Ivr =-
for(int j=0;j insertSort(data,j,i); D<J,3(Yu
} $.KDnl^
} tdi^e;:?
insertSort(data,0,1); n-x%<j(Xf
} 7-j=he/
v%8S:3
/** ZIp"X
* @param data bCmlSu
* @param j q~6((pWi|
* @param i :\69N/uw`
*/ rvETt
private void insertSort(int[] data, int start, int inc) { JAU:Wqlg1
int temp; J_N`D+m
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); `3'4_@7s9
} E-i<^&E
} Bs;.oK5!n@
} hZ~\Z
S7
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} j6#RV@ p`
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快速排序: $;As7MI
^nN@@\-5
package org.rut.util.algorithm.support; Q}|QgN
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import org.rut.util.algorithm.SortUtil; L9^h.Y7
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/** ]#P>wW
* @author treeroot Q|Go7MQZ@k
* @since 2006-2-2 @Rs3i;"W
* @version 1.0 =x-@-\m
*/ cwBf((~
public class QuickSort implements SortUtil.Sort{ J`[He$7)
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/* (non-Javadoc) tish%Qnpd
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P<MNwdf(+
*/ dZ{yNh.]
public void sort(int[] data) { ,+o*>fD
quickSort(data,0,data.length-1); >*e,+ok
} %Kc 2n9W
private void quickSort(int[] data,int i,int j){ {i| $^A3
int pivotIndex=(i+j)/2; b$/'dnx
file://swap hM~zO1XW
SortUtil.swap(data,pivotIndex,j); gQlL0jAV
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int k=partition(data,i-1,j,data[j]); >?)Df(n(9
SortUtil.swap(data,k,j); jCxg)D7W
if((k-i)>1) quickSort(data,i,k-1); R^=[D#*]>
if((j-k)>1) quickSort(data,k+1,j); uBA84r%{QQ
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} Uv%?z0F<C
/** 3!2TE -
* @param data &pEr;:E
* @param i E;Q
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* @param j b&xlT+GN
* @return D9-D%R,
*/ D/TEx2.=J3
private int partition(int[] data, int l, int r,int pivot) { rh$q]
do{ +5oK91o[y
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); AA~6r[*~
SortUtil.swap(data,l,r); xZ(f_Oy
} &C6Z{.3V
while(l SortUtil.swap(data,l,r); \zv?r:1t
return l; d!#qBn$*[
} MNVOlo A
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} !)+8:8H'
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改进后的快速排序: KQ2jeJ/pj
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package org.rut.util.algorithm.support; ~"8)9&
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import org.rut.util.algorithm.SortUtil; * vW#XDx
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/** Y/Q/4+
* @author treeroot g!.k>
* @since 2006-2-2 #b5V/)K
* @version 1.0 ~E*`+kD
*/ .E&-gXJ4
public class ImprovedQuickSort implements SortUtil.Sort { ?h7(,39^>
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private static int MAX_STACK_SIZE=4096; &0*IN
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private static int THRESHOLD=10; BZ"+ ND9m_
/* (non-Javadoc) x/^,{RrPk
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 61=D&lb
*/ %\QK/`krp
public void sort(int[] data) { /G& %T
int[] stack=new int[MAX_STACK_SIZE]; j/PNi@
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int top=-1; 3lT>C'qq
int pivot; L0dj 76'M
int pivotIndex,l,r; iR6w)
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stack[++top]=0; oRQJ YH
stack[++top]=data.length-1; b@m\ca
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while(top>0){ t8\XOj
int j=stack[top--]; U6
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int i=stack[top--]; q;L~5q."E
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pivotIndex=(i+j)/2; y;1l].L
pivot=data[pivotIndex]; jce^Xf
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SortUtil.swap(data,pivotIndex,j); K3On8
|A% Jx__
file://partition Y1Sfhs)
l=i-1; >nOU 8
r=j; LJ+Qe%|
do{ /`vn/X^?^
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); F3pBk)>a\
SortUtil.swap(data,l,r); L-QzC<[F/
} ;!H|0sv
while(l SortUtil.swap(data,l,r); 6im!v<1Qx
SortUtil.swap(data,l,j); ~T'Ri=
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if((l-i)>THRESHOLD){ C)8>_PY[M
stack[++top]=i; [6{o13mCWE
stack[++top]=l-1; YNV4'
} LH]<+Zren
if((j-l)>THRESHOLD){ iw)^;8q
stack[++top]=l+1; eSlZAdK
stack[++top]=j; S=.7$PY
} :$gR
>.`
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} f9FLtdh
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file://new InsertSort().sort(data); I|oS`iLl$
insertSort(data); l1MVC@'pvP
} %9lx)w
/** SFQYrY
* @param data ]F81N(@:F
*/ ~L7@,d :
private void insertSort(int[] data) { E3==gYCe*
int temp; Gn7P` t*.
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); mpysnKH
} oo{3-+ ?
} xQK;3b
} 9/_ F
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} o2vBY]Tj
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归并排序: #FQkwX'g
!.}ZlA
package org.rut.util.algorithm.support; 4<{]_S6"0y
kvo V?<!
import org.rut.util.algorithm.SortUtil; N+M^e`H
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/** %=GF
* @author treeroot *sbZ{{]e
* @since 2006-2-2 \8e27#PJR
* @version 1.0 %pk'YA{M)q
*/ cN(Toj'`
public class MergeSort implements SortUtil.Sort{ W$bQS!7y
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/* (non-Javadoc) svTKt%6X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^^C@W?.z
*/ *c1)x
public void sort(int[] data) { Y!C8@B$MR3
int[] temp=new int[data.length]; q+}KAk|]V
mergeSort(data,temp,0,data.length-1); ^w(~gQ6|mP
} U1!#TD)@
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private void mergeSort(int[] data,int[] temp,int l,int r){ HX&G
k
int mid=(l+r)/2; ~R!M.gY[rK
if(l==r) return ; /-v6jiM
mergeSort(data,temp,l,mid); |{en){:
mergeSort(data,temp,mid+1,r); . \6q\7Ej
for(int i=l;i<=r;i++){ 4`M7
3k0
temp=data; *(>,\8OVf
} b)1v:X4Bv=
int i1=l; F\G-. 1
int i2=mid+1; HZDeQx`*s
for(int cur=l;cur<=r;cur++){ +thkx$o
if(i1==mid+1) $/p/9 -
data[cur]=temp[i2++]; k~,({T<
else if(i2>r) ! O~:
data[cur]=temp[i1++]; 2/ES.>K!.
else if(temp[i1] data[cur]=temp[i1++]; <RaM@E
else ZJ
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data[cur]=temp[i2++]; ?n0Z4 8%
} l1?$quM^V
} b2<((H
P56B~M_
} *@1(!A
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改进后的归并排序: .nG14i7C
6J""gyK.
package org.rut.util.algorithm.support; v%2 @M
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import org.rut.util.algorithm.SortUtil; g,61'5\
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/** 4[VW~x07
* @author treeroot Pn| ;VCh
* @since 2006-2-2 :{Mr~Co*
* @version 1.0 ,^K}_z\9f
*/ )A1u uW (
public class ImprovedMergeSort implements SortUtil.Sort { ??u*qO:p
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private static final int THRESHOLD = 10; L)qDtXd4
$]`rWSYtv`
/* yPXa
* (non-Javadoc) K}j["p<!
* \a7caT{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B}U:c]
*/ P1u(0t
public void sort(int[] data) { 5HqvSfq>?
int[] temp=new int[data.length]; !CGpE=V
mergeSort(data,temp,0,data.length-1); hzcSKRm
} FJCL K#-
m*f"Y"B.1I
private void mergeSort(int[] data, int[] temp, int l, int r) { .X](B~\!
int i, j, k; uG){0%nX
int mid = (l + r) / 2; qOs'Ljx6l
if (l == r) \Aq$h:<
return; fuQk}OW{
if ((mid - l) >= THRESHOLD) dMlJ2\]u
mergeSort(data, temp, l, mid); vXLGdv::
else ;ZtN9l
insertSort(data, l, mid - l + 1); ^(+@uuBx
if ((r - mid) > THRESHOLD) /:. p{y
mergeSort(data, temp, mid + 1, r); 8quH#IhB
else
#Y%(CI
insertSort(data, mid + 1, r - mid); ?[!_f$50]P
y)K!l:X
for (i = l; i <= mid; i++) { f>zd,|)At
temp = data; P|tNmv[;
} 3'zL,W W
for (j = 1; j <= r - mid; j++) { /)*si
temp[r - j + 1] = data[j + mid]; !~_6S*~
} i*jnC>
int a = temp[l]; Min{&?a
int b = temp[r]; "%rzL.</
for (i = l, j = r, k = l; k <= r; k++) { m88(f2Ch
if (a < b) { 8I]rC<O6:
data[k] = temp[i++]; VoC|z Rd_
a = temp; 6c[Slq!KA
} else { ZU68\cL
data[k] = temp[j--]; Q79WGW
b = temp[j]; &ev#C%Nu
} CsX@u#
} @QfbIP9
} #9rCF 3P
#B6$r/%
/** +#Ga}eCM
* @param data KSve_CBOh
* @param l 6ee1^>
* @param i 2UeK%-~W?
*/ Xk?Y
private void insertSort(int[] data, int start, int len) { XYze*8xUb
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); j*_>/gi
} q"-+`;^7(-
} U]PsL3:
} kIJ=]wU|v
} _T(77KLn;
b>@fHmpwD
堆排序: #:E^($v
x }.&?m
package org.rut.util.algorithm.support; Ch'e'EmI
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import org.rut.util.algorithm.SortUtil; 4&<zkAMR
*],=!
/** V( =3K"j
* @author treeroot R,+"^:}
* @since 2006-2-2 'NN3XyD
* @version 1.0 xzb{g,c
*/ nkkUby9
public class HeapSort implements SortUtil.Sort{ c?}{>ig/)
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/* (non-Javadoc) IN=l|Q$8f
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IXU~&5&J
*/ }+fBJ$
public void sort(int[] data) { ,T8fo\a4
MaxHeap h=new MaxHeap(); ow7*HN*
h.init(data); c8oE,-~
for(int i=0;i h.remove(); +:3p*x%1H
System.arraycopy(h.queue,1,data,0,data.length); )VeeAu)p
} 5 J
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private static class MaxHeap{ @N6KZn|R
nnuJY$O;M
void init(int[] data){ |k<5yj4?
this.queue=new int[data.length+1]; ~EO=;a_
for(int i=0;i queue[++size]=data; ge[&og/$
fixUp(size); 97n,^t2F\
} <ahcE1h
} ZW ZKy JQ
^)1!TewCY
private int size=0; h{CMPJjD
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private int[] queue; N6h.zl&04
*lyRy/POB
public int get() { y<^hM6S?Z
return queue[1]; i)[~]D.EH8
} QuBaG<
/'L/O;H20
public void remove() { X({R+
SortUtil.swap(queue,1,size--); /H$/s=YU\U
fixDown(1); Bw4PxJs-
} vJg^uf)
file://fixdown ,a\pdEPj
private void fixDown(int k) { ee*E:Ltz\
int j; k-8$43
while ((j = k << 1) <= size) { WO+_|*&
if (j < size %26amp;%26amp; queue[j] j++; 4p]hY!7
if (queue[k]>queue[j]) file://不用交换 x<>In"QV
break; /S`d?AV
SortUtil.swap(queue,j,k); e[%g'}D:-
k = j; Ew2ksZ>B]&
} J72YZrc
} o%l|16DR
private void fixUp(int k) { }>?"bcJ
while (k > 1) { k2DBm q;
int j = k >> 1; |\/V1
if (queue[j]>queue[k]) !z_VwZ#,
break; 5uD'Kd$H
SortUtil.swap(queue,j,k); J-Wphc!m
k = j; 3ms{gZbw
} !;.nL-NQ
} xmwH~UWp
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} K ZQ
`
Hv .C5mo
} z/t+t_y
ym6gj#2m
SortUtil: QE~#eo
wIK&EGQ
package org.rut.util.algorithm; [ FNA:
`YPNVm<3)
import org.rut.util.algorithm.support.BubbleSort; =xPBolxm5U
import org.rut.util.algorithm.support.HeapSort;
Y 9~z7
import org.rut.util.algorithm.support.ImprovedMergeSort; usOIbrQ
import org.rut.util.algorithm.support.ImprovedQuickSort; S<DS|qOo
import org.rut.util.algorithm.support.InsertSort; >TwL&la
import org.rut.util.algorithm.support.MergeSort; v1~`76^
import org.rut.util.algorithm.support.QuickSort; Oxr?y8C~
import org.rut.util.algorithm.support.SelectionSort; )Tj\ym-Vl
import org.rut.util.algorithm.support.ShellSort; J2Eb"y>/;
Pt8 U0)i)
/** 'E~[I"0
* @author treeroot a[Oi
* @since 2006-2-2 X5wYfN
* @version 1.0 roE*8:Y
*/ AE&IN.-
public class SortUtil { }|4dEao\
public final static int INSERT = 1; AV^Sla7|_
public final static int BUBBLE = 2; ^n8r mh_%
public final static int SELECTION = 3; NRZ>03w
public final static int SHELL = 4; 3qBZzM
O*
public final static int QUICK = 5; VU
8~hF
public final static int IMPROVED_QUICK = 6; %)G]rta#
public final static int MERGE = 7; i*Ee(m]I
public final static int IMPROVED_MERGE = 8; 9UeK}Rl^n
public final static int HEAP = 9; |\S p IFH1
f
iu?mb=*
public static void sort(int[] data) { Vq1ve;(8s
sort(data, IMPROVED_QUICK); kc-v(WIC
} G9P)Y#WB
private static String[] name={ nK5FPFz8
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" &[4lP~
}; Z}4
`y"By
4O** %!|
private static Sort[] impl=new Sort[]{ :,BKB*a\
new InsertSort(), l*z.20^P
new BubbleSort(), >6"u{Qmr
new SelectionSort(), q$6Tb
new ShellSort(), -P|st;?#
new QuickSort(), WZJ}HHePr
new ImprovedQuickSort(), I:G4i}mA
new MergeSort(), L/n?1'he
new ImprovedMergeSort(), U>s$}Y:+Z
new HeapSort() FZ^j|2.L*
}; yZ]u{LJS
JJ$q *
public static String toString(int algorithm){ 9Lv"|S`5W_
return name[algorithm-1]; $C8nPl' 7
} Wa+q[E
V_Oj?MMpn
public static void sort(int[] data, int algorithm) { >g FEA0-
impl[algorithm-1].sort(data); smN|r
} MUfhk)"
@>sZ'M2mq
public static interface Sort { 1O,<JrE+-
public void sort(int[] data); V,qc[*_3
} jjrhl
y,QJy=?
public static void swap(int[] data, int i, int j) { wio}<Y6Xz
int temp = data; _]# ^2S
data = data[j]; o 0'!u
data[j] = temp; Au-h#YV
} WVfwt.Y
} H~Fb=.h]U