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。 }qAVN
插入排序: `m%:rE,
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package org.rut.util.algorithm.support; #4><r.v3
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import org.rut.util.algorithm.SortUtil; ;UrK{>B
/** >B_n/v3P(M
* @author treeroot FI8k;4|V
* @since 2006-2-2 hT'=VN
* @version 1.0 Q[uAIyv0
*/ =h|wwQE
public class InsertSort implements SortUtil.Sort{ g` [` P@
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/* (non-Javadoc) \5~;MI.Sq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i?;R}%~
*/ e0 u,zg+m
public void sort(int[] data) { n_P3\Y|
int temp; (bv,02
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); DL {R|3{N
} !,Nwts>m
} ;#&fgj
} B_k2u
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} \5TxE
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冒泡排序: ZB[k{Y
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package org.rut.util.algorithm.support; j)by }}
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import org.rut.util.algorithm.SortUtil; Y % Ieg.o
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/** Gf0,RH+
* @author treeroot lZWK2
* @since 2006-2-2 !8R@@,_v
* @version 1.0 MR$>!Nlp
*/ BAV>o|-K
public class BubbleSort implements SortUtil.Sort{ ,O]l~)sr|
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/* (non-Javadoc) >o~Z>lr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8uch i
*/ f:wd&V
public void sort(int[] data) { 0q,pi qjO
int temp; A\AT0th
for(int i=0;i for(int j=data.length-1;j>i;j--){ Wto;bd
if(data[j] SortUtil.swap(data,j,j-1); ?D|\]0 eN
} ]|U-y645
} g5S?nHS}
} HjA_g0u
} BFVAw
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} "e6|"w@8
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选择排序: syPWs57pH
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package org.rut.util.algorithm.support; ;%!B[+ut"
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import org.rut.util.algorithm.SortUtil; ` ;)ZGY\
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/** kKiA
* @author treeroot @5VV|Wt=
* @since 2006-2-2 =IjQ4 0W
* @version 1.0 +4qU>
*/ Q_p[kK H
public class SelectionSort implements SortUtil.Sort { zj|WZ=1*Wp
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/* LF*&(NC
* (non-Javadoc) tPfFqqT
* YB,t0%vTJw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v [njdP
*/ r0]4=6U
public void sort(int[] data) { (% _n!ip^
int temp; TDt Amk
for (int i = 0; i < data.length; i++) { !>z:m!MlQ
int lowIndex = i; v2+!1r7@
for (int j = data.length - 1; j > i; j--) { ]; Wx
if (data[j] < data[lowIndex]) { Te,$M3|
lowIndex = j; a
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} ^U[D4UM
} ut2~rRiK
SortUtil.swap(data,i,lowIndex); >~nF=
} ZD>a>]
} s{bdl[7
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} +}xaQc:0|
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Shell排序: ~b~2
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package org.rut.util.algorithm.support; BB$oq'
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import org.rut.util.algorithm.SortUtil; ,XkGe
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/** O1&b]C#
* @author treeroot 6NWn(pZ]p
* @since 2006-2-2 rQ`i8GF
* @version 1.0 5Por "&%
*/ {'En\e
public class ShellSort implements SortUtil.Sort{ 8flOq"uK^
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/* (non-Javadoc) NB_)ZEmF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RDqFL.-S
*/ _PFnh)o
public void sort(int[] data) { ) 0 W`
for(int i=data.length/2;i>2;i/=2){ yifY%!@Xu
for(int j=0;j insertSort(data,j,i); '(GiF
} "XgmuSQ!
} 5{e,L>H<
insertSort(data,0,1); rKH:[lKm
} XQ%4L-rhN
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/** a,
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* @param data 0& >H^
* @param j 'H8(=9O1d
* @param i ~S,p?I
*/ EtbnE*S
private void insertSort(int[] data, int start, int inc) { WY^W.1X
int temp; &8.NT~"Gg
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); k3?rp`V1
} tGA :[SP
} <JMcIV837
} Wq*b~Lw
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} -HSs^dP`
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快速排序: ~x#w<0e>
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package org.rut.util.algorithm.support; m,C1J%{^
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import org.rut.util.algorithm.SortUtil; Lip4)Y [
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/** 2(5ebe[
* @author treeroot HbP!KVHyk1
* @since 2006-2-2 xGTP;NT_H
* @version 1.0 kmzH'wktt
*/ t!Sq A(-V
public class QuickSort implements SortUtil.Sort{ lL1k.&|5m
oh#\]c\f
/* (non-Javadoc) 2'=T[<nNB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y0?5w0{
*/ T~QJO0
public void sort(int[] data) { g&/T*L
quickSort(data,0,data.length-1); |5Xq0nvCe
} >pUtwIP
private void quickSort(int[] data,int i,int j){ |rm g#;/D
int pivotIndex=(i+j)/2; V#VN%{
file://swap dy_:-2S
SortUtil.swap(data,pivotIndex,j); MSf;ZB
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int k=partition(data,i-1,j,data[j]); .r*2|
SortUtil.swap(data,k,j); jKt7M>P
if((k-i)>1) quickSort(data,i,k-1); k)EX(T\
if((j-k)>1) quickSort(data,k+1,j); 2-Y<4'>
%^RN#_ro(3
} (5]}5W*
/** >/|q:b^2r
* @param data I`NjqyTW
* @param i <&C]sb
* @param j N-lkYL-%\j
* @return E>l~-PaZY
*/ 98^V4maR:
private int partition(int[] data, int l, int r,int pivot) { '],J$ge
do{ >2~=)L
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ,v"YqD+GC5
SortUtil.swap(data,l,r); iLSr*`
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} A~-b!Grf
while(l SortUtil.swap(data,l,r); eM8}X[
return l; SL5Ai/X0N
} | Bi!
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} ;^Dpl'v%\
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改进后的快速排序: R17?eucZ
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package org.rut.util.algorithm.support; % >=!p
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import org.rut.util.algorithm.SortUtil; s0vDHkf8
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/** <7~'; K
* @author treeroot 3W
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* @since 2006-2-2 q.;u?,|E/
* @version 1.0 GWfL
*/ @{25xTt
public class ImprovedQuickSort implements SortUtil.Sort { }4,L%$@n
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private static int MAX_STACK_SIZE=4096; ]9^sa-8
private static int THRESHOLD=10; zolt$p
/* (non-Javadoc) }~L.qG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Abc)i7!.,.
*/ ')cMiX\v
public void sort(int[] data) { fb~ytl<
int[] stack=new int[MAX_STACK_SIZE]; {z{bY\
+{oG|r3L
int top=-1; z:wutqru
int pivot; g%=z_
int pivotIndex,l,r; [1S|dc>.O%
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stack[++top]=0; lgk.CC
stack[++top]=data.length-1; 'd9INz.
8A})V8
while(top>0){ t7aefV&_,
int j=stack[top--]; koug[5T5
int i=stack[top--]; ]Gsv0Xk1
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pivotIndex=(i+j)/2; ~UP[A'9jJ
pivot=data[pivotIndex]; MDn ua
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SortUtil.swap(data,pivotIndex,j); |IzPgC
)
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file://partition asppRL||
l=i-1; vbZ}Z3f_
r=j; Fj2BnM3#
do{ cQ
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ?Lk)gO^C
SortUtil.swap(data,l,r); o6.^*%kM'
} X}Ai-D
while(l SortUtil.swap(data,l,r); rX2.i7i,
SortUtil.swap(data,l,j); Q' {ML4
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if((l-i)>THRESHOLD){ \!.B+7t=I
stack[++top]=i; 3YR!Mq$|~
stack[++top]=l-1; -lY6|79bF
} nksLWfpG?B
if((j-l)>THRESHOLD){ '-Vt|O_Q
stack[++top]=l+1; -&zZtDd F
stack[++top]=j; | ATvS2
} &w_j/nW^'
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} vApIHI?-
file://new InsertSort().sort(data); LTQ"8
insertSort(data); "R;U/+
} ;n*.W|Uph
/** EE06h-n s
* @param data qN9(S:_Px
*/ a%JuC2
private void insertSort(int[] data) { V^bwXr4f
int temp; ];[}:f
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {EB;h\C
} $r@zs'N
} iL-(O;n
} h+g_rvIG*
*v !9MU9[(
} |4;Fd9q^m
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归并排序: wDal5GJp
FXG]LoP
package org.rut.util.algorithm.support; *v^Jb/E315
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import org.rut.util.algorithm.SortUtil; q 376m-+
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/** U)]oO
* @author treeroot l*(8i ^
* @since 2006-2-2 $]/{[@5
* @version 1.0 O`IQ(,yef
*/ ohGJ1
public class MergeSort implements SortUtil.Sort{ BUDi&|,
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/* (non-Javadoc) 3w*R&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u5`u>.!
*/ y4?0j:
public void sort(int[] data) { ~D j8z+^
int[] temp=new int[data.length]; U2#"p
mergeSort(data,temp,0,data.length-1); {T$9?`h~M
} v!~fs)cdE|
3) <yod=
private void mergeSort(int[] data,int[] temp,int l,int r){ V(I8=rVH
int mid=(l+r)/2; ,aZ[R27rpL
if(l==r) return ; zZPO&akB"
mergeSort(data,temp,l,mid); UmP/h@8
mergeSort(data,temp,mid+1,r); oq
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for(int i=l;i<=r;i++){ Cw3a0u
temp=data; g*AWE,%=|
} @Md/Q~>
int i1=l; w3ResQ
int i2=mid+1; hn
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for(int cur=l;cur<=r;cur++){ z#wkiCRYm
if(i1==mid+1) gD@){Ip
data[cur]=temp[i2++]; ]m3HF&
else if(i2>r) e8a+2.!&\
data[cur]=temp[i1++]; Mk 6(UXY
else if(temp[i1] data[cur]=temp[i1++]; z\W64^'"Z
else Q~
w|#
data[cur]=temp[i2++]; -l*|M(N\
} i>`%TW:g
} MAR'y8I
~Fcm[eoC
} +5*95-;0
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改进后的归并排序: s2V:cMXFn
JG rWHIsNV
package org.rut.util.algorithm.support; b{&)6M)zo
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import org.rut.util.algorithm.SortUtil; %YscBG
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/** NH4#
* @author treeroot <)H9V-5aZ
* @since 2006-2-2 b2Fe<~S{
* @version 1.0 oJz^|dW
*/ @Cyvf5|bL
public class ImprovedMergeSort implements SortUtil.Sort { 1.GQau~
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private static final int THRESHOLD = 10; j</: WRA`]
.|70;
/* =8.
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* (non-Javadoc) kgP0x-Ap
* )7Wf@@R'F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UB@+ck
*/ 904}Jh,
public void sort(int[] data) { KkbD W3-
int[] temp=new int[data.length]; r`d4e,(
mergeSort(data,temp,0,data.length-1); 8OU\V5i[,q
} FTUv IbT
eq;uO6[
private void mergeSort(int[] data, int[] temp, int l, int r) { {4Cmu;u
int i, j, k; 8cIKvHx
int mid = (l + r) / 2; 1>h]{%I
if (l == r) $%#!bV
return; f2`2,?
if ((mid - l) >= THRESHOLD) ]{@-HTt
mergeSort(data, temp, l, mid); c-5)QF) z
else 3F2w-+L
insertSort(data, l, mid - l + 1); bWU'cw
if ((r - mid) > THRESHOLD) tT_\ i6My
mergeSort(data, temp, mid + 1, r); \_f(M|
else ]N?kG`[
insertSort(data, mid + 1, r - mid); m;QMQeGz
9WyhZoPD*
for (i = l; i <= mid; i++) { @*((1(q
temp = data; lRFYx?y
} )Ql%r?(F+
for (j = 1; j <= r - mid; j++) { /*mI<[xb
temp[r - j + 1] = data[j + mid]; E:nF$#<'N
} lt8|9"9<
int a = temp[l]; )+DmOsH
int b = temp[r]; kt:!
7
for (i = l, j = r, k = l; k <= r; k++) { [7Oe3=
if (a < b) { uKHxe~
data[k] = temp[i++]; }o`76rDN
a = temp; Rima;9.Y0
} else { [{,1=AB
data[k] = temp[j--]; L4nYXW0y
b = temp[j]; MQ8J<A Pf-
} 6j}9V
L77
} 0 kW,I
}
}.6[qk
wf<M)Rs|
/** &tj!*k'
* @param data Q*Pq{]0K
* @param l Ysv"
6b}
* @param i i9x+A/o[
*/ . $vK&k
private void insertSort(int[] data, int start, int len) { +6+i!Sip
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); G4"F+%.
} fz
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} H qx-;F~0
} F:S}w
} O:K2Y5R?B
x[e<} 8'$(
堆排序: _H@DLhH|=
qIT@g"%}t
package org.rut.util.algorithm.support; 7@W>E;go
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import org.rut.util.algorithm.SortUtil; cw
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nX8v+:&}
/** N"ST@/j.A
* @author treeroot 2D5StCF$O
* @since 2006-2-2 U]rRQ
d/:;
* @version 1.0 ]7A'7p$Y
*/ \s\?l(ooq"
public class HeapSort implements SortUtil.Sort{ ?}Y]|c^W
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/* (non-Javadoc) _lq`a\7e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2GG2jky{/
*/ S3J^,*'
public void sort(int[] data) { I7]8Y=xf
MaxHeap h=new MaxHeap(); , W?VhO
h.init(data); j1<Yg,_.p
for(int i=0;i h.remove(); <:CkgR$/{
System.arraycopy(h.queue,1,data,0,data.length); ~wdGd+ez
} M"L=L5OH-
+lTq^4
private static class MaxHeap{ Dw"\/p:-3
%(Icz?
void init(int[] data){ 'Pbr
v
this.queue=new int[data.length+1]; 6!bsM"F
for(int i=0;i queue[++size]=data; #O&8A
fixUp(size); gRzxLf`K
} ! 8b^,
} N2o7%gJw
#\ErY3k 6&
private int size=0; dc'Y`e
^B^9KEjTz
private int[] queue; F"mmLao
A@u@ift
public int get() { 5bb(/YtFy
return queue[1]; NxILRKwO
} !<F3d`a
w32y3~
public void remove() { q,%st~
SortUtil.swap(queue,1,size--); CvdN"k
fixDown(1); 2~2 O V
} /mZE/>&~,
file://fixdown 2Khv>#l
private void fixDown(int k) { !<h)w#>en
int j; ugBCBr
while ((j = k << 1) <= size) { l+b~KU7~l
if (j < size %26amp;%26amp; queue[j] j++; {4PwLCy
if (queue[k]>queue[j]) file://不用交换 hqdDm
break; D6Wa.,r
SortUtil.swap(queue,j,k); +cRn%ioVi
k = j; HbIF^LeY|R
} VtohL+
} 6dYMwMH
private void fixUp(int k) { y)<q/
while (k > 1) { R|Q?KCI&
int j = k >> 1; k;W
XB|k
if (queue[j]>queue[k]) 5-A\9UC*@
break; |[y6Ua0
SortUtil.swap(queue,j,k); y_[vr:s5pG
k = j; S|}L &A
} Ea=P2:3*
} 8b=_Y;
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} >-c8q]()ly
K>
e7pu
} !_(Tqyg&
: E?V.
SortUtil: g\AY|;T
BJ0?kX@
package org.rut.util.algorithm; paMa+jhQQ
WEpoBP
CL
import org.rut.util.algorithm.support.BubbleSort; Hx:;@_gq
import org.rut.util.algorithm.support.HeapSort; B/C,.?Or
import org.rut.util.algorithm.support.ImprovedMergeSort; [/ZO q
import org.rut.util.algorithm.support.ImprovedQuickSort; J=yTbSN\v
import org.rut.util.algorithm.support.InsertSort; nj4/#W
import org.rut.util.algorithm.support.MergeSort; g,Y/M3>(
import org.rut.util.algorithm.support.QuickSort; BerwI
7!=
import org.rut.util.algorithm.support.SelectionSort; |cY`x(?yP
import org.rut.util.algorithm.support.ShellSort; &.ACd+Cd
\j.:3Xr
/** w#J2 wS
* @author treeroot ?%kV?eu'
* @since 2006-2-2 NuI9iU
* @version 1.0 I2DpRMy
*/ DL.!G
public class SortUtil { B?wq=DoG
public final static int INSERT = 1; y?!"6t7&
public final static int BUBBLE = 2; Q=:|R3U/
public final static int SELECTION = 3; :H[6Lg\*
public final static int SHELL = 4; <6=c,y
public final static int QUICK = 5; SY8C4vb'h
public final static int IMPROVED_QUICK = 6; 9ll~~zF99|
public final static int MERGE = 7; t>sE x:
public final static int IMPROVED_MERGE = 8; P>6{&(
public final static int HEAP = 9; 4/)k)gLI
tI{_y
public static void sort(int[] data) { =":,.Ttq41
sort(data, IMPROVED_QUICK); bN88ua}k{
} 59-c<I/}f
private static String[] name={ L4f3X~8,b
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" &~w}_Fjk
}; DeYV$W
B
E!AE4B1bd
private static Sort[] impl=new Sort[]{ &-=5Xc+Z
new InsertSort(), 07 $o;W@
new BubbleSort(), d5l UGRg
new SelectionSort(), Xry47a
)
new ShellSort(), .[ mRM
new QuickSort(), $mB;K]m
new ImprovedQuickSort(), s9d_GhT%-
new MergeSort(), 6 aV_@no.C
new ImprovedMergeSort(), v9UD%@tZ
new HeapSort() abEmRJTmW
}; m4yL@d,Yw
Y4(
public static String toString(int algorithm){ -`t^7pr
return name[algorithm-1]; bYPK h
} ;S*}WqP,
8sCv]|cn
public static void sort(int[] data, int algorithm) { ei{eTp4HpV
impl[algorithm-1].sort(data); VD\=`r)nT
} 4'Zp-k?5`
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public static interface Sort { K_-MYs.
public void sort(int[] data); <