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。 FVBAB>
插入排序: h9CTcWGt
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package org.rut.util.algorithm.support; S\<i`q
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import org.rut.util.algorithm.SortUtil; Z+J4q9^$
/** \`xlD&F@U
* @author treeroot %)?jaE}[
* @since 2006-2-2 LybaE~=
* @version 1.0 #Xox2{~
*/ %Q0R]
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public class InsertSort implements SortUtil.Sort{ i!e8-gVMP&
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/* (non-Javadoc) dzPewOre*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z'& fEsjy
*/ 5TB6QLPEwY
public void sort(int[] data) { 0kOwA%m
int temp; ow{. iv\,u
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -X~|jF
} t4G$#~
} _`&l46
} )Hmf=eoc
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} e]1Zey
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冒泡排序:
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package org.rut.util.algorithm.support; L*[3rqER
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import org.rut.util.algorithm.SortUtil; W_JO~P
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/** Y.]$T8
* @author treeroot X_hDU~5{wC
* @since 2006-2-2 !Kg']4
* @version 1.0 qx[c0X!
*/ BDWbWA
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public class BubbleSort implements SortUtil.Sort{ ]kTxVe
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/* (non-Javadoc) H4AT>}ri
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E KV[cq
*/ ">z3i`#C'
public void sort(int[] data) { tMX$8W0
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int temp; 62qjU<Z
for(int i=0;i for(int j=data.length-1;j>i;j--){ )j>U4a
if(data[j] SortUtil.swap(data,j,j-1); ;VAyH('~
} 79W^;\3
} ~~h#2SX
} ~8u *sy
} "^\q{S&q2P
s) shq3O
} dM^Z,;u
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选择排序: 0O>ClE~P
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package org.rut.util.algorithm.support; mA+:)?e5~
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import org.rut.util.algorithm.SortUtil; ~BmA!BZV`
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/** 0zB[seyE
* @author treeroot C$1W+(
* @since 2006-2-2
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* @version 1.0 5P-t{<]tx
*/ ([dd)QU
public class SelectionSort implements SortUtil.Sort { nwUz}em?O
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/* V&s|I oTR
* (non-Javadoc) za@/4z
* uwSSrT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0>N6.itOz
*/ J4"Fj, FS
public void sort(int[] data) { fyb;*hgu
int temp; `IUn{I
for (int i = 0; i < data.length; i++) { UE.kR+1
int lowIndex = i; KaNs>[a8
for (int j = data.length - 1; j > i; j--) { ^x: lB>
if (data[j] < data[lowIndex]) { 3>aEP5
lowIndex = j; bPU
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}
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} lFyDH{!
SortUtil.swap(data,i,lowIndex); w&aZ 97{
}
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} bH e'
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} F^NK"<tW
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Shell排序: Wjw,LwB
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package org.rut.util.algorithm.support; `Zm6e!dH-
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import org.rut.util.algorithm.SortUtil; !ka* rd
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/** 7t:RQ`$:
* @author treeroot mOsp~|d
* @since 2006-2-2 RDp
* @version 1.0 0<-E)\:[g
*/ WK>|IgK
public class ShellSort implements SortUtil.Sort{ ^Fco'nlM
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/* (non-Javadoc) E=p+z"Ui
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y"GNJtsL "
*/ n|~y
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public void sort(int[] data) { zXn-E
for(int i=data.length/2;i>2;i/=2){ PC#^L$cg}
for(int j=0;j insertSort(data,j,i); #_wq#rF
} $ s/E}X
} 9qB0F_xl
insertSort(data,0,1); S'jg#*$
} TJO$r6&
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/** l}))vf=i
* @param data P2-&Im`+
* @param j ;=ddv@
* @param i $Iwvecn?I
*/ _F;v3|`D@<
private void insertSort(int[] data, int start, int inc) { 'BjTo*TB]Z
int temp; ,twx4r^
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); esqmj#G
} Fz%;_%j
} e"nm< &
} b|d-vnYE
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} <W"W13*j!
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快速排序: hJ}i+[~be
j<B9$8x&
package org.rut.util.algorithm.support; vwU1}H
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import org.rut.util.algorithm.SortUtil; f~`=I NrU
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/** 'dLw8&T+W
* @author treeroot !*N9PUM
* @since 2006-2-2 <1D|TrP
* @version 1.0 ]%' AZ`8
*/ m+TAaK
public class QuickSort implements SortUtil.Sort{ 1UP=(8j/
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/* (non-Javadoc) a#YK1n[!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Lnr9*dm6q
*/ Iux3f+H
public void sort(int[] data) { @Jzk2,rI
quickSort(data,0,data.length-1); K3yQ0k
|
} !GqFX+!Ju
private void quickSort(int[] data,int i,int j){ ,@`?I6nKy
int pivotIndex=(i+j)/2; Ttluh
*
file://swap 8D='N`cN+
SortUtil.swap(data,pivotIndex,j); Jj"{C]
{>f"&I<xw
int k=partition(data,i-1,j,data[j]); 1@F-t94I
SortUtil.swap(data,k,j); ju"z
if((k-i)>1) quickSort(data,i,k-1); uzy5rA==
if((j-k)>1) quickSort(data,k+1,j); 9P?0D
#Iw(+%D
} JE?rp1.
/** $C4~v
* @param data |kYlh5/c d
* @param i l|P"^;*zq
* @param j utlr|m Xc
* @return !_S#8"
*/ )6OD@<r{
private int partition(int[] data, int l, int r,int pivot) { -50DGA,K6
do{ ;CYoc4e
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); _fHC+lwN
SortUtil.swap(data,l,r); B/twak\
} sdFHr4
while(l SortUtil.swap(data,l,r); `H+"7SO
return l; yqT !A
} j/ 5
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} U'fP
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改进后的快速排序: t#k]K]
z*\_+u~u
package org.rut.util.algorithm.support; 7oE0;'
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import org.rut.util.algorithm.SortUtil; 9`tK9
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/** !J$r|IX5
* @author treeroot FlqGexY5
* @since 2006-2-2 @!sK@&ow@%
* @version 1.0 o?`FjZ6;x
*/ J]F&4O
public class ImprovedQuickSort implements SortUtil.Sort { m{\
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private static int MAX_STACK_SIZE=4096; 8Zr;n`~
private static int THRESHOLD=10; ul~ux$a
/* (non-Javadoc) x/*lNG/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w'S,{GW
*/ a3@E`Z
public void sort(int[] data) { ARKM[]
int[] stack=new int[MAX_STACK_SIZE]; ^P)f]GQx
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int top=-1; #@R0$x
int pivot; n(:<pz
int pivotIndex,l,r; \TV
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stack[++top]=0; hlzB
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stack[++top]=data.length-1; ]3KeAJ
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while(top>0){ spEdq}
int j=stack[top--]; e;]tO-Nu
int i=stack[top--]; =rjU=3!&(
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pivotIndex=(i+j)/2; O0 'iq^g
pivot=data[pivotIndex]; Un?|RF
@@65t'3S
SortUtil.swap(data,pivotIndex,j); +7_qg
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file://partition ){^J8]b7#
l=i-1; cD!,ZL
r=j; &> sbsx\y
do{ As:O|!F
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); *dl hRa
SortUtil.swap(data,l,r); Fr9/TI
} w,UE0i9I
while(l SortUtil.swap(data,l,r); JJ: ku&Mb
SortUtil.swap(data,l,j); h4Crq Yxa_
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if((l-i)>THRESHOLD){ ,81%8r
stack[++top]=i; vy<W4
stack[++top]=l-1; +|A`~\@N
} J'44j;5&
if((j-l)>THRESHOLD){ 56v G R(
stack[++top]=l+1; OVg&?fiP
stack[++top]=j; ;%tFi
} odv2 (\
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} kDmm
file://new InsertSort().sort(data); R9XU 7_3B
insertSort(data); t{md&k4
} TW|K.t@5#H
/** ^Q/*on;A,/
* @param data [+ud7l
*/ $8tk|uh
private void insertSort(int[] data) { D"7}&Ry:
int temp; 55S s%$k@
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `TrWtSwv
} 9LR=>@Z
} C6!F6Stn]g
} 9`in
r.:
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} N\{"&e
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归并排序: %a%xUce&-X
Y_Yf'z1>[
package org.rut.util.algorithm.support; X8C7d6ca
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import org.rut.util.algorithm.SortUtil; c -w #`
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/** .. `I<2
* @author treeroot #M-!/E
* @since 2006-2-2 SUS=sR/N
* @version 1.0 fG0 ?"x@>
*/ vDjH $ U
public class MergeSort implements SortUtil.Sort{ <WXVUEea
N>mW64_H)
/* (non-Javadoc) 'uL4ezTtA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (x=$b(I
*/ 7KC>?F
public void sort(int[] data) { HuhQ|~C+~
int[] temp=new int[data.length]; \YP,}_~
mergeSort(data,temp,0,data.length-1); H 0l1=y
} HNzxFnh
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private void mergeSort(int[] data,int[] temp,int l,int r){ C'6I< YX
int mid=(l+r)/2; '$ei3
if(l==r) return ; YxF@1_g
mergeSort(data,temp,l,mid); sd%j&Su#4
mergeSort(data,temp,mid+1,r); (7 I|lf
e
for(int i=l;i<=r;i++){ xSY"Ru
temp=data; 0 R6:3fV6R
} ?sN{U\
int i1=l; DDE-$)lf>
int i2=mid+1; %>+uEjbT
for(int cur=l;cur<=r;cur++){ zPt<b!q
if(i1==mid+1) `Ba]i) !
data[cur]=temp[i2++]; #g{R+#fm
else if(i2>r) Yy *=@qu>g
data[cur]=temp[i1++]; VD=H=Ju
else if(temp[i1] data[cur]=temp[i1++]; p-4$)w~6i
else mixsJ}e
data[cur]=temp[i2++]; JP#S/kJ%3
} ,54z9F`
} EU[\D;
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} #p}GWS)
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改进后的归并排序: +,e#uuj$p
4@9Pd &I
package org.rut.util.algorithm.support; +x]/W|5
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import org.rut.util.algorithm.SortUtil; [ZWAXl
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/** ,s8/6n#
* @author treeroot +_GS@)L`%
* @since 2006-2-2 3^8Cc(bk
* @version 1.0 4]o+)d.`(
*/ Y'U1=w~E
public class ImprovedMergeSort implements SortUtil.Sort { nCQtn%j't
=%<=Bn
private static final int THRESHOLD = 10; gN/<g8
>|taU8^|G}
/* gd;!1GNi]
* (non-Javadoc) ';C'9k<P:
* 2KLMFI.F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %"WENa/t
*/ )vW'g3u _
public void sort(int[] data) { *Fy6-CC1
int[] temp=new int[data.length]; "Zp&7hI
mergeSort(data,temp,0,data.length-1); z\ZnxZ@
} D Y2*B"^
wf8{v
private void mergeSort(int[] data, int[] temp, int l, int r) { 1K Vit{
int i, j, k; VZ9 p "
int mid = (l + r) / 2; VYG@_fd!x
if (l == r) .S//T/3O]Q
return; uu6 JZp
if ((mid - l) >= THRESHOLD) |] 7c&`
mergeSort(data, temp, l, mid); #,#`<h!
else \U:OQ.e
insertSort(data, l, mid - l + 1); qo[[P)tq
if ((r - mid) > THRESHOLD) Y`g o V
mergeSort(data, temp, mid + 1, r); P~a@{n*8
else Oiib2Ov
insertSort(data, mid + 1, r - mid); wAHuPQ&_Q
@2E52$zu
for (i = l; i <= mid; i++) { mG[jR*JW
temp = data; m.lR]!Y=w
} 9&sb,^4
for (j = 1; j <= r - mid; j++) { ,p|Q/M^
temp[r - j + 1] = data[j + mid]; 'I,a 29
} }m+Q(2
int a = temp[l]; A4zI1QF
int b = temp[r]; %9cT#9!7
for (i = l, j = r, k = l; k <= r; k++) { MT!Y!*-5
if (a < b) { O>L,G)g
data[k] = temp[i++]; wO]e%BTO
a = temp; 3t-STk?
} else { &~*](Ma
data[k] = temp[j--]; qA>#;UTp
b = temp[j]; {Z2nc)|7C
} CcQc!`YC
} )0/9
L
} /9br &s$B
r^m&<)Ca
/** n.g-%4\q
* @param data Z5t^D|
* @param l ]N 9N][n
* @param i [H*JFKpx
*/ &g;!n&d zP
private void insertSort(int[] data, int start, int len) { .Y6v#VI
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); S<7!<]F-
} $b`nV4p
}
h(=<-p@
} rd7p$e=i
} r;{$x
35l%iaj]G5
堆排序:
kt6)F&;$
DQGrXMpV0
package org.rut.util.algorithm.support; ~u&gU1}
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import org.rut.util.algorithm.SortUtil; fg LY{
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/** # Wi?I=,
* @author treeroot ~61b^L}$
* @since 2006-2-2 d.?}>jl
* @version 1.0 \-yI
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*/ ].s;Yxz
public class HeapSort implements SortUtil.Sort{ >B6*`3v
vv.E6D^x(
/* (non-Javadoc) =mXC,<]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r#OPW7mhE
*/ .e7tq\k
public void sort(int[] data) { SMrfEmdH+
MaxHeap h=new MaxHeap(); R=~%kt_n
h.init(data); y"yo\IDW
for(int i=0;i h.remove(); D% j GK
System.arraycopy(h.queue,1,data,0,data.length); G4'Ia$
} *;@wPT
%T]$kF++&
private static class MaxHeap{ oMN<jAU.
J$}]p
void init(int[] data){ t+a.,$U
this.queue=new int[data.length+1]; ^i|R6oO_5
for(int i=0;i queue[++size]=data; %W~w\mT
fixUp(size); SVo ?o|<
} <\O+
} -)(5^OQ
X&WP.n)
private int size=0; Z5Lmg
fHd[8{;P:
private int[] queue; :|n[z jK/S
!'H$08Ql}
public int get() {
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return queue[1]; IW~wO
} Jw _>I
'Ou C[$Z
public void remove() { .=;IdLO,Bf
SortUtil.swap(queue,1,size--); @dv8 F
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fixDown(1); ?JZ$M
} >eA@s}_8
file://fixdown Wh i#Ii~
private void fixDown(int k) { %[|^7
int j; &:l-;7d
while ((j = k << 1) <= size) { `rVru= zoy
if (j < size %26amp;%26amp; queue[j] j++; d/R!x{$-f
if (queue[k]>queue[j]) file://不用交换 I(^0/]'
break; zjA]Tr
SortUtil.swap(queue,j,k);
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k = j; hnFpC1TO
} {A/^;X{N^
} 8;?4rrS
private void fixUp(int k) { =sk[I0W
while (k > 1) { ~1+6gG
int j = k >> 1; zx%WV@O9
if (queue[j]>queue[k]) V<UChD)N`
break; J'Pyn
SortUtil.swap(queue,j,k); vS\ 2zwb}
k = j; yD~,+}0)
} $6Q^ur:
} V~/G,3:0y%
VaD+:b4
} _CHzwNU
6C&&="uww
} <kFLwF?PM'
:m<&Ff}
SortUtil: rhc+tR
|BFzTz,o
package org.rut.util.algorithm; T^7Cv{[
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import org.rut.util.algorithm.support.BubbleSort; 6 ]x?2P%
import org.rut.util.algorithm.support.HeapSort; .yy-jf/
import org.rut.util.algorithm.support.ImprovedMergeSort; qA GjR!=^
import org.rut.util.algorithm.support.ImprovedQuickSort; ]P3m=/w
import org.rut.util.algorithm.support.InsertSort; 12lX-~[["
import org.rut.util.algorithm.support.MergeSort; MoFM'a9
import org.rut.util.algorithm.support.QuickSort; (|BY<Ac3
import org.rut.util.algorithm.support.SelectionSort; Ip'tB4Mq
import org.rut.util.algorithm.support.ShellSort; ]i#p2?BR
h&i*=&<HP6
/** yIL=jzm`7
* @author treeroot O=3/qs6m
* @since 2006-2-2 \I!mzo
* @version 1.0 JVuju$k
*/ nmU1xv_
public class SortUtil { lBbb7*Ljt<
public final static int INSERT = 1; E@ :9|5
public final static int BUBBLE = 2; U=bx30brh%
public final static int SELECTION = 3; >SI'Q7k
public final static int SHELL = 4; Z8v 8@Y
public final static int QUICK = 5; _P.I+!w:x
public final static int IMPROVED_QUICK = 6; %C_tBNE<
public final static int MERGE = 7; LH4A!a]
public final static int IMPROVED_MERGE = 8; a%r!55.
public final static int HEAP = 9; BI:Cm/ >
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public static void sort(int[] data) { _4N.]jr5
sort(data, IMPROVED_QUICK); mU-2s%X<.^
} w5 . ^meU
private static String[] name={ G[mqLI{q
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Lyhuyb)k5^
}; ?CAU+/
[1vm~w'
private static Sort[] impl=new Sort[]{ c;kU|_
new InsertSort(), m,Y/ke\
new BubbleSort(), ZK]qQrIwy
new SelectionSort(), {J==y;dK
new ShellSort(), Bg]VaTm[=
new QuickSort(), Ow4 _0l&
new ImprovedQuickSort(), -LiGO #U
new MergeSort(), 4<-Kd~uL
new ImprovedMergeSort(), eS!]..%y
new HeapSort() 6o^>q&e}%
}; i]c{(gd`
tQ9%rb
public static String toString(int algorithm){ <uuumi-!%G
return name[algorithm-1]; G^Gs/-
f
} U"7o;q
X_2N9$},
public static void sort(int[] data, int algorithm) { kD#n/RBgf
impl[algorithm-1].sort(data); dq '2y
} 9}6_B|
mEJ7e#
public static interface Sort { h q7f"`
public void sort(int[] data); G0 EXgq8
} j~N*T XkC
Ve(<s
public static void swap(int[] data, int i, int j) { dCoP
qKy
int temp = data; Gt&yz"?D
data = data[j]; sLA.bp.O
data[j] = temp; i?/Q7D<P
} +S{m!j%B
} zls^JTE