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。 DlF6tcoI
插入排序: p02E:?
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package org.rut.util.algorithm.support; ',l}$]y5
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import org.rut.util.algorithm.SortUtil; LSlYYyt
/** vwIP8z~<
* @author treeroot 9k*1_
* @since 2006-2-2 Mrly(*!U"@
* @version 1.0 sIz*r Gz
*/ :YUQKy
public class InsertSort implements SortUtil.Sort{ GS qt:<Qs
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/* (non-Javadoc) pRc<U^Z.h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =%ry-n G
*/ P+gYLX8
public void sort(int[] data) { N6<G`k,
int temp; \ sc's7
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >mCS`D8
} #,jw! HO]
} i7jI(VvB^
} "bmWr)
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} 3cB=9Y{<
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冒泡排序: UC*\3:>'n
l}&&f8n
package org.rut.util.algorithm.support; zcCGREe=
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import org.rut.util.algorithm.SortUtil; Jf3xK"in
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/**
SUaXm#9
* @author treeroot A[8vD</}_
* @since 2006-2-2 i}e4P>ADD
* @version 1.0 sA:k8aj
*/ nS9 kwaO
public class BubbleSort implements SortUtil.Sort{ BWev(SF{Ny
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/* (non-Javadoc) 0UN65JBuD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %(d0`9
*/ +et)!2N
public void sort(int[] data) { f~Ve7
int temp; ?3;0 SAh
for(int i=0;i for(int j=data.length-1;j>i;j--){ x~n]r[!L
if(data[j] SortUtil.swap(data,j,j-1); e;r?g67
} D&/~lhyNZ
} 4&_|myO&
} X{-901J1
} 4VI'd|Ed
*'\xlsp#
} Tq,xW
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选择排序: o`%;*tx
d45mKla(V
package org.rut.util.algorithm.support; @3WI7q4
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import org.rut.util.algorithm.SortUtil; ]]!&>tOlI
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/** "H3DmsB
* @author treeroot y%@C-:
* @since 2006-2-2 ;pVnBi
* @version 1.0 -XMWN$Ah
*/ ^w+)A;?W
public class SelectionSort implements SortUtil.Sort { DU lvlQW
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/* }U_z XuUz
* (non-Javadoc) NKRI|'Y,
* AEO7I
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $G D@e0
*/ du_TiI
public void sort(int[] data) { &A)u!l Ue
int temp; )Bpvi4O
for (int i = 0; i < data.length; i++) {
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int lowIndex = i; OiJz?G:m
for (int j = data.length - 1; j > i; j--) { f;cY&GC
if (data[j] < data[lowIndex]) { c7f11N!v>b
lowIndex = j; U#' WP
} 0;n}{26a
} p{W'[A{J .
SortUtil.swap(data,i,lowIndex); `HV~.C
} 1azj%WY
} Gcp!"y=i
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} CoTe$C7
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Shell排序: DQyy">]Mh
mm9xO%
package org.rut.util.algorithm.support; L/7YI\C2
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import org.rut.util.algorithm.SortUtil; a@s@E
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/** P`]p&:
* @author treeroot q-R'5p\C?|
* @since 2006-2-2 (^9dp[2
* @version 1.0 2x<4&^
*/ 0o_wy1O1,
public class ShellSort implements SortUtil.Sort{ -_+,HyJP
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l
/* (non-Javadoc) j5~nLo2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) apw/nhQ.[
*/ |]+PDc%
public void sort(int[] data) { ^J?y
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for(int i=data.length/2;i>2;i/=2){ [a!*m<
for(int j=0;j insertSort(data,j,i); z!>ml3
} Rr"D)|Y;C(
} *z6m644H
insertSort(data,0,1);
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} 0.lOSAq
PsCr[\Ul
/** AroYDR,3+
* @param data |Wz`#<t
* @param j CaqqH`/E4
* @param i L{uQ:;w1
*/ / &#b*46
private void insertSort(int[] data, int start, int inc) { C{2y*sx
int temp; hB??~>i3
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); p$_X\,F
} t;L7H E@Y
} d[$YTw
} .g52p+Z#
]JvZ{fA%*
} *Y<1KXFU
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快速排序: @zi_@B
tr-muhuK
package org.rut.util.algorithm.support; Dh.pH1ZY3n
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import org.rut.util.algorithm.SortUtil; <= Aqi9 1
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/** GjeRp|_Qd<
* @author treeroot VK3e(7b
* @since 2006-2-2 Yu_`
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* @version 1.0 rO7[{<97m
*/ i8i~b8r]
public class QuickSort implements SortUtil.Sort{ O~&j}WN
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/* (non-Javadoc) `VD7VX,rp*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l$DQkbOj
*/ R~H +.Vh
public void sort(int[] data) { \Ws$@J-M
quickSort(data,0,data.length-1); -$tf`
} WNWtQ2]
private void quickSort(int[] data,int i,int j){ &LDA=B
int pivotIndex=(i+j)/2; Q/ ^a(
file://swap Wk-jaz
SortUtil.swap(data,pivotIndex,j); &.)ST0b4
z%~rQa./$
int k=partition(data,i-1,j,data[j]); 7xoq:oP-}N
SortUtil.swap(data,k,j); K}TSwY
if((k-i)>1) quickSort(data,i,k-1); xF])NZy|
if((j-k)>1) quickSort(data,k+1,j); }e0>Uk`[
66Bx,]"6
} h7cE"m
/** 2R>!Wj'G+o
* @param data y.+!+4Mg|
* @param i Tv /?-`Y
* @param j 8Q\ T,C
* @return K\y
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*/ DE!P[$J
private int partition(int[] data, int l, int r,int pivot) { 4M*!'sG\
do{ ql(~3/kA_
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); )bR`uV9<
SortUtil.swap(data,l,r); 1y7FvD~ v
} jzAXC^FS
while(l SortUtil.swap(data,l,r); -@?4Tfl
return l; .BrYz:#A
} 23*OuY
>o|.0aw<
} B> V)6\
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改进后的快速排序: VGeyZ\vU
0W!S.]^1
package org.rut.util.algorithm.support; $i"IOp
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import org.rut.util.algorithm.SortUtil; Y:4/06I
/ MV2#P@
/** 4'G osQ85
* @author treeroot W'L
* @since 2006-2-2 I/Q~rVt
* @version 1.0 lOu&4Kq{g
*/ )POU58$
public class ImprovedQuickSort implements SortUtil.Sort { Uo=_=.GQ
/nz J`d
private static int MAX_STACK_SIZE=4096; )UN_,'H/V
private static int THRESHOLD=10; R-OQ(]<*
/* (non-Javadoc) 7 p[NuU*Gg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (%SKTM
*/ %%qg<iO_
public void sort(int[] data) { Da&Brm
int[] stack=new int[MAX_STACK_SIZE]; 2"8qtG`Et
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int top=-1; Zx
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int pivot; jWcfQ
int pivotIndex,l,r; Z^6qxZJ7
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stack[++top]=0; ]3I@5 }5%
stack[++top]=data.length-1; ;(Kj-,>
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while(top>0){ ^C70b)68
int j=stack[top--]; mae@L
int i=stack[top--]; \.Z
/
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pivotIndex=(i+j)/2; M {Hy=:K+
pivot=data[pivotIndex]; JV@b(x`
\fJ _,
SortUtil.swap(data,pivotIndex,j); ]!v\whZ>
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file://partition d~z%kl
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l=i-1; kadw1sYj
r=j; %z"n}|%!
do{ -I.BQ
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); iE,/x^&,&
SortUtil.swap(data,l,r); A1F!I4p5
} k293wS
while(l SortUtil.swap(data,l,r); y_{fc$_&
SortUtil.swap(data,l,j); M=#g_*d
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if((l-i)>THRESHOLD){ Q(/F7"m
stack[++top]=i; @|d+T"f
stack[++top]=l-1; PXo^SHJ+gt
} uL
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if((j-l)>THRESHOLD){ 8om)A0S
stack[++top]=l+1; |DLmMsS4
stack[++top]=j; UqNUP+K
} DH!_UV
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}
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file://new InsertSort().sort(data); wPl9%
insertSort(data); O]80";Uv
} } T&~DVM
/** XU6SYC"t%~
* @param data {C5-M! D{<
*/ #D
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private void insertSort(int[] data) { Oj#/R?%,X
int temp; e|eWV{Dsz
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $Qcr8~+a
} q*7:L
} z,c=."<z
} H -t" Z}
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} lX/:e=
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X\ub#!
归并排序: Bj*
M
W
Tzr'3m_
package org.rut.util.algorithm.support; :&BE-f
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import org.rut.util.algorithm.SortUtil; AYv7-!Yk
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/** ]:.9:RmEV
* @author treeroot x\5v^$
* @since 2006-2-2 %s ">:
* @version 1.0 @o>3
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*/ #PQhgli
public class MergeSort implements SortUtil.Sort{ ky I~
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/* (non-Javadoc) yeIcQ%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) li9>zjz
*/ S)x5.vo^
public void sort(int[] data) { MR/gLm(8(
int[] temp=new int[data.length]; d'[]
mergeSort(data,temp,0,data.length-1); pZ5eGA=
} ~'0W(~Q8
7uq^TO>9f
private void mergeSort(int[] data,int[] temp,int l,int r){ Ny
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int mid=(l+r)/2; #]z_pp:
if(l==r) return ; zj2l&)N
mergeSort(data,temp,l,mid); gXe`G(w
mergeSort(data,temp,mid+1,r); l(d3N4iz
for(int i=l;i<=r;i++){ #A=ER[[
temp=data; hE;BT>_dn
} G-5ezVli
int i1=l; `Hd~H
int i2=mid+1; $fG~;`T
for(int cur=l;cur<=r;cur++){ 4nKlW_{,
if(i1==mid+1) I8VCR8q
data[cur]=temp[i2++]; )wCV]TdF
else if(i2>r) NE+
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data[cur]=temp[i1++]; z4 KKt&
else if(temp[i1] data[cur]=temp[i1++]; rkn'1M&u
else N `[ ?db-%
data[cur]=temp[i2++]; Y7<(_p7
} #sM*<2vj
} DhN<e7c`
K[l5=)G0L
} 3M5wF6nY[[
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改进后的归并排序: qkBCI,X_Y
GuKiNYI_
package org.rut.util.algorithm.support; ` NCH^)
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import org.rut.util.algorithm.SortUtil; U3BhoD#f\
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/** _*CbtQb5
* @author treeroot 3u[5T|D'
* @since 2006-2-2 6&_K;
* @version 1.0 rY295Q
*/ \nU_UH
public class ImprovedMergeSort implements SortUtil.Sort { a LJ
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private static final int THRESHOLD = 10; 6/.cS4
q,>4#J[2;s
/* @bZ,)R
* (non-Javadoc) @k)[p+)E
* YRu#JYti
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,$Xhwr
*/ uLSuY}K0
public void sort(int[] data) { Y=Om0=v
int[] temp=new int[data.length]; /]-a 1
mergeSort(data,temp,0,data.length-1); \WxBtpbQB
} |>KOlwh5n
.p(%gmOp#
private void mergeSort(int[] data, int[] temp, int l, int r) { f7:}t+d
int i, j, k; ;lf $)3%[
int mid = (l + r) / 2; lPw`KW
if (l == r) k(M(]y_
return; @4=Az1W*
if ((mid - l) >= THRESHOLD) {!^0j{T
mergeSort(data, temp, l, mid); #Ve@D@d[
else 7yUX]95y8
insertSort(data, l, mid - l + 1); .+&M,%
x
if ((r - mid) > THRESHOLD) yaPx=^&
mergeSort(data, temp, mid + 1, r); d fSj= 4
else 1u~a*lO}
insertSort(data, mid + 1, r - mid); 5em*9Ko
j7~Rw"(XQc
for (i = l; i <= mid; i++) { e?+&2zMq
temp = data; QypUBf
} #'BPW<Ob
for (j = 1; j <= r - mid; j++) { /xCX. C
temp[r - j + 1] = data[j + mid]; P DwBSj
} jmF)iDvjuZ
int a = temp[l]; PxA
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int b = temp[r]; +#9 4X)*
for (i = l, j = r, k = l; k <= r; k++) { E_\V^
if (a < b) { KpT=twcK
data[k] = temp[i++]; rp=Y }
a = temp; w%- S5#
} else { h!?rk|
data[k] = temp[j--]; |IDZMd0
b = temp[j]; r!~6.
} WWT1_&0
} i&j]FX6q
} q^h/64F
7G%:ckg
/** [DvQk?,t
* @param data o8~<t]Ejw
* @param l $E}N`B7
* @param i \LM.>vJ
*/ >L433qR
private void insertSort(int[] data, int start, int len) { ~.CmiG.7
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); %e(DPX
} YT6dI"48
} US\h,J\Ju
} XrI$@e*
} \-8aTF
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堆排序: rTqGtmulG
ZFs
xsg^r
package org.rut.util.algorithm.support; tac\Ki?
"[0.a\ d<
import org.rut.util.algorithm.SortUtil; kW=!RX[&
/!fJ`pu!
/** gux?P2f
* @author treeroot /@U bN\
* @since 2006-2-2 R{pF IyR
* @version 1.0 6FY.kN\
*/ ~_
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public class HeapSort implements SortUtil.Sort{ ] !n3j=*
IyAD>Q^
/* (non-Javadoc) Dt(xj}[tC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g.\%jDM
*/ U+zntB
public void sort(int[] data) { tG~[E,/`
MaxHeap h=new MaxHeap(); MG~bDM4
h.init(data); <v=s:^;C0
for(int i=0;i h.remove(); y+KAL{AGK
System.arraycopy(h.queue,1,data,0,data.length); e;2A{VsD8
} ;]@Pm<f
'_5|9
}
private static class MaxHeap{ AH_qZTv0{Q
Wb[k2V
void init(int[] data){ ("{"8
this.queue=new int[data.length+1]; wB&5q!{!
for(int i=0;i queue[++size]=data; Q>71uM%e`
fixUp(size); BGHZL~
} h1l%\ 3ZH
} RC?vU
nLx|$=W
private int size=0; 6OoOkNWF
6b9J3~d\E
private int[] queue; a$Hq<~46
~+ 9vz
public int get() { *eX/ZCn
return queue[1]; M&)\PbMc
} _EJP I
3_`)QYU'
public void remove() { +bT[lJ2O>G
SortUtil.swap(queue,1,size--); X?XB!D7[
fixDown(1); K)5j
} aNA]hl
file://fixdown ]k'^yc{5
private void fixDown(int k) { gA%
A})
int j; \BN$WV
while ((j = k << 1) <= size) { { {:Fs
if (j < size %26amp;%26amp; queue[j] j++;
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if (queue[k]>queue[j]) file://不用交换 w*&vH/D
break; Y B,c=Wx
SortUtil.swap(queue,j,k); kW1w;}n$
k = j; @_7rd
} Hp>L}5 y[
} `- (<Q;iO
private void fixUp(int k) { E@yo/S
while (k > 1) { j=Izwt>
int j = k >> 1; +k~0&lZi
if (queue[j]>queue[k]) %M))Ak4~a
break; (w:,iw#
SortUtil.swap(queue,j,k); ;FW <%
k = j; HUAYtUBH
} k61mRO
} ZhoV,/\+
v$w}UC%uf
} Y}:4y$<
P+=m.
} A^#\=ZBg1
;8dffsyq
SortUtil: ;Rpib[m
3W]gn8
package org.rut.util.algorithm; f*xr0l
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import org.rut.util.algorithm.support.BubbleSort; T\g+w\N
import org.rut.util.algorithm.support.HeapSort; 'nBP%
import org.rut.util.algorithm.support.ImprovedMergeSort; 1U/RMN3`
import org.rut.util.algorithm.support.ImprovedQuickSort; )RT?/N W
import org.rut.util.algorithm.support.InsertSort; ([}08OW@
import org.rut.util.algorithm.support.MergeSort; 9[;da
import org.rut.util.algorithm.support.QuickSort; }WaZ+Mdg\
import org.rut.util.algorithm.support.SelectionSort; ^i_+ugJX
import org.rut.util.algorithm.support.ShellSort; W`NF4 0)
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/** i q oXku
* @author treeroot bX,#z,
* @since 2006-2-2 (CY D]n
* @version 1.0 wDGb h=
*/ GZ,MC?W
public class SortUtil { =B5{ 7g\
public final static int INSERT = 1; N5,LHO
public final static int BUBBLE = 2; mC$y*G
public final static int SELECTION = 3; y_w
<3
public final static int SHELL = 4; GqR|hg
public final static int QUICK = 5; {-8Nq`w
public final static int IMPROVED_QUICK = 6; 'Grii,
public final static int MERGE = 7; ge:a{L
public final static int IMPROVED_MERGE = 8; &)gc{(4$
public final static int HEAP = 9; =y _KL
)GAlj;9A$
public static void sort(int[] data) { xr7}@rq"U<
sort(data, IMPROVED_QUICK); JJ%@m;~
} CbC[aVA=
private static String[] name={ /e|Lw4$@S
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" u!5q)>Wt(
}; `[g$EXX
ES AX}uF
private static Sort[] impl=new Sort[]{ 2xf lRks
new InsertSort(), ybw\^t
new BubbleSort(), $
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new SelectionSort(), Pd\4hy
new ShellSort(), Fa[^D~$l*
new QuickSort(), )Uy%iE*
new ImprovedQuickSort(), !Q15qvRS
new MergeSort(), *DC/O(
0
new ImprovedMergeSort(), ]& ckq
new HeapSort() l nHY?y7{
}; peBHZJ``RX
#qYgQ<TM!
public static String toString(int algorithm){ ,]7ouH$H}
return name[algorithm-1]; HI 1T
} 7Q9Hk(Z9
OKlR`Vaty
public static void sort(int[] data, int algorithm) { D
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impl[algorithm-1].sort(data); dk
nM|
} H-+U^@w
fmj}NV&ma
public static interface Sort { n qO*z<
public void sort(int[] data); G)%V 3h
}
Um{) ?1
3qf#NJN}
public static void swap(int[] data, int i, int j) { %UrNPk
int temp = data; I`X!M!dB)
data = data[j]; [`b,SX
x
data[j] = temp; ]tN)HRk1
} N6"sXwm
} zGR,}v%%