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。 o>y@1%aU
插入排序: I6Oc`S!L
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package org.rut.util.algorithm.support; 0GcOI}
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import org.rut.util.algorithm.SortUtil; xF`O ehVA
/** .tzQ
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* @author treeroot gezZYP)d
* @since 2006-2-2 d$PQb9Q+f
* @version 1.0 Df}3^J~JX
*/ [w}KjV/yi
public class InsertSort implements SortUtil.Sort{ s>a(#6Q
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/* (non-Javadoc) r~; TId} #
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3
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*/ uE&2M>2
public void sort(int[] data) { T%@qlEmf
int temp; |K'7BK_^J
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7KZ>x*o
} S,GM!YZg
} N3|aNQ=X0
} X~rHNRIU
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} otJHcGv
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冒泡排序: m8z414o
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package org.rut.util.algorithm.support; C''[[sw'K
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import org.rut.util.algorithm.SortUtil; `YK%I8
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/** 5`f\[oA
* @author treeroot D|"^
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* @since 2006-2-2 H 2UR
* @version 1.0 k^Uk=)9
*/ ~.<}/GP] _
public class BubbleSort implements SortUtil.Sort{ j?s+#t
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/* (non-Javadoc) cQ`+ A|q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xwZ7I
*/ Vf`9[*j
public void sort(int[] data) { 5dEek7wnf
int temp; y*5$B.u`.
for(int i=0;i for(int j=data.length-1;j>i;j--){ jrm
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if(data[j] SortUtil.swap(data,j,j-1); o;J_"'kP
} I.'sK9\Zp
} y3NMt6
} W=?s-*F[~
} ~w}Zv0
42 &m)
} L`0}wR?+
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选择排序: @+^5ze\
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package org.rut.util.algorithm.support; U?yKwH^{
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import org.rut.util.algorithm.SortUtil; ARa9Ia{@
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/** mx")cGGQ
* @author treeroot `I)ftj%
* @since 2006-2-2 5wGc"JHm
* @version 1.0 F(+dX4$
*/ .="[In'
public class SelectionSort implements SortUtil.Sort { w\Bx=a>vc
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/* `|g*T~;
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* (non-Javadoc) q)KLf\
* rQ$Jk[Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5ofsJ!b'
*/ q
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public void sort(int[] data) { .5YIf~!59
int temp; *XSHzoT*
for (int i = 0; i < data.length; i++) { ]2'{W]m
int lowIndex = i; r d4\N2- 6
for (int j = data.length - 1; j > i; j--) { @Z%I g
if (data[j] < data[lowIndex]) { h?2 :'Vu]
lowIndex = j; OA\
*)c+F
} 09C[B+>h
} 8A3!XA
SortUtil.swap(data,i,lowIndex); eWwI@ASaA
} Q]2v]PJ6"
} bx8|_K*^
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} @&E{
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}!0nb)kL
Shell排序: "N4rh<<
f3Cjj]RFv
package org.rut.util.algorithm.support; UkV{4*E
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import org.rut.util.algorithm.SortUtil; @Zd/>'
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/** iv]*HE
* @author treeroot 4Js9"<w
* @since 2006-2-2 [MVG\6Up(
* @version 1.0 #.z`clK#
*/ YQk<1./}I
public class ShellSort implements SortUtil.Sort{ SUQk0 (M
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/* (non-Javadoc) 7Yrp#u1!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H3Z"u
*/ _/zK^S)
public void sort(int[] data) { WQT;k0;T]
for(int i=data.length/2;i>2;i/=2){ _N&]w*ce
for(int j=0;j insertSort(data,j,i); TWFi.w4pY
} ^@0-E@ {c
} Sx%vJYH0
insertSort(data,0,1); LVX01ox$
} p .^#mN
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/** drZ1D s
* @param data #`9D,+2iB%
* @param j xX]92Q
* @param i ;'x\L<b/)
*/ EO[UezuU
private void insertSort(int[] data, int start, int inc) { ntT~_Ba8;u
int temp; gAWrn^2L5
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); j*aYh^
} 7JI&tlR4\c
} E5}wR(i,4
} l;gj],*
NFQR
} /K./k!'z
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快速排序: L?c7M}vV
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package org.rut.util.algorithm.support; ?m$7)@p
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import org.rut.util.algorithm.SortUtil; M~1 n#
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/** 8 O5@FU
3
* @author treeroot 'F665
* @since 2006-2-2 + ^9;<>P
* @version 1.0 mVBF2F<4
*/ 0$9I.%4jAJ
public class QuickSort implements SortUtil.Sort{ CdN,R"V0$@
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/* (non-Javadoc) mjd9]HgN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K(M@#t1_&
*/ &sRjs
public void sort(int[] data) { V\V:uo(C
quickSort(data,0,data.length-1); 0bQm:J[(#
} 'r5[tK}
private void quickSort(int[] data,int i,int j){ m8|&z{
int pivotIndex=(i+j)/2; )@]Y1r4U
file://swap <2Qh5umQ
SortUtil.swap(data,pivotIndex,j); ;uC +5g`
+'NiuN
int k=partition(data,i-1,j,data[j]); @fH?y Z=>
SortUtil.swap(data,k,j); kM`!'0kt
if((k-i)>1) quickSort(data,i,k-1); h*qoe(+ZD
if((j-k)>1) quickSort(data,k+1,j); 'e(`2
{|jG_
} .7HnWKUV
/** mQOYjy3
* @param data 2_4m}T3
* @param i 9x~qcH%
* @param j &x(^=sTHI
* @return ]qJ6#sAw75
*/ sH>Z{xjr
private int partition(int[] data, int l, int r,int pivot) { 8\~IwtSk
do{ I+Q`i:\,q
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); F+`DfI]/m
SortUtil.swap(data,l,r); IJ%S[>
}
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while(l SortUtil.swap(data,l,r); *Iu
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return l; 2HNH@K
} $z9z'^HqO
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} 7x%0^~/n
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改进后的快速排序: pEjA*6v|,
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package org.rut.util.algorithm.support; GA{Q6]B
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import org.rut.util.algorithm.SortUtil; TT429
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/** eKL)jzC:
* @author treeroot %EuXL% B
* @since 2006-2-2 od- 0wJN-m
* @version 1.0 aQ ~
*/ 'y#kRC=G:
public class ImprovedQuickSort implements SortUtil.Sort { /#PEEN
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private static int MAX_STACK_SIZE=4096; VK+#!!Ha
private static int THRESHOLD=10; NC;4
/* (non-Javadoc) P^%.7C
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -4p^wNR
*/ ]3iu-~
public void sort(int[] data) { |4i,Vkfhe
int[] stack=new int[MAX_STACK_SIZE]; a; Ihv#q
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int top=-1; 7CGKm8T
int pivot; LDL#*g
int pivotIndex,l,r; R {r0dK"_
-IR9^)
stack[++top]=0; fN8|4
stack[++top]=data.length-1; W39R)sra
ms=Ilz
while(top>0){ 3ySP*J5
int j=stack[top--]; ;6o p|
int i=stack[top--]; c7jft|4S
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pivotIndex=(i+j)/2; T8.@}a
pivot=data[pivotIndex]; OC'cP[$ _
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SortUtil.swap(data,pivotIndex,j); {PHxm
ybtje=3E
file://partition p&F=<<C
l=i-1; PX](hc=
r=j; _4z>I/R>Z
do{ g]C+uj^
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); GA6)O-^G
SortUtil.swap(data,l,r); snTj!rV/_
} '3wte9E/
while(l SortUtil.swap(data,l,r); 35yhe:$nf
SortUtil.swap(data,l,j); Gb%PBg}HH
#Dx$KPD
if((l-i)>THRESHOLD){ bwo" s[w
stack[++top]=i; a%f5dj+
stack[++top]=l-1; m=2TzLVv
} VGBL<X
if((j-l)>THRESHOLD){ SZ-% 0z
stack[++top]=l+1; l[^bo/
stack[++top]=j; R|{6JsjG10
} ]"^GRFK5
FXFQ@q*}v
} YTq>K/
file://new InsertSort().sort(data); uH]n/Kv1,
insertSort(data); AKM\1H3U
} &adKKYN
/** p&bQ_ XOH
* @param data 4qjY,QJ
*/ C+}uH:I'L
private void insertSort(int[] data) { J3Q.6e=7
int temp; hNFMuv
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Dw{C_e
} VLtb16|
} SDV} bN
} c0Jf
u=#!je
} (~{7 e/)r
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归并排序: jHB,r^:'
f7XmVCz1
package org.rut.util.algorithm.support; p`{9kH1m e
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import org.rut.util.algorithm.SortUtil; 9F kwtF
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/** xYRL4
* @author treeroot LL-MZ~ZB
* @since 2006-2-2 e)\s0#
* @version 1.0 sl%B-;@I
*/ %Q}#x
public class MergeSort implements SortUtil.Sort{ bM8b3,}?n
@8@cpm
/* (non-Javadoc) 1kl4X3q6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g9I2SdaJ
*/ vK#xA+W
public void sort(int[] data) { bQ0m=BzF
int[] temp=new int[data.length]; \rADwZm
mergeSort(data,temp,0,data.length-1); kvSSz%R~
} 05nG|
-CY?~WL&
private void mergeSort(int[] data,int[] temp,int l,int r){ .he%a3e
int mid=(l+r)/2; 5nqj
if(l==r) return ; sBF}j.b
mergeSort(data,temp,l,mid); ImklM7A
mergeSort(data,temp,mid+1,r); Wuye:b!
for(int i=l;i<=r;i++){ /5suyM=U
temp=data; mRfF)
} {Ca#{LeLk
int i1=l; sKjg)3Sl
int i2=mid+1; nb'],({:9
for(int cur=l;cur<=r;cur++){ Qo)>i0
if(i1==mid+1) UX2`x9
data[cur]=temp[i2++]; sh}=#eb
else if(i2>r) Dw;L=4F
|
data[cur]=temp[i1++]; }RG
else if(temp[i1] data[cur]=temp[i1++]; @?*26}qp
else D4n~2]
data[cur]=temp[i2++]; ]Rnr>_>x;
} <JYV
G9s}
} :(A]Bm3
rN$_(%m_N
} $CHri|
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改进后的归并排序: bbiDY
$}W=O:L+D
package org.rut.util.algorithm.support; ;% !'K~
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import org.rut.util.algorithm.SortUtil; GRO[&;d`
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/** u Dm=W36
* @author treeroot SMqJMirR
* @since 2006-2-2 .0.Ha}{6b
* @version 1.0 +Medu?K
`
*/ |nz,srr~
public class ImprovedMergeSort implements SortUtil.Sort { Gnj|y?'
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private static final int THRESHOLD = 10; lXW.G
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/* *"O7ml]
* (non-Javadoc) ./[%%"
* O)`R)MQ)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2@:Go`mg
*/ 5"^$3&)
public void sort(int[] data) { l5D8DvJCj
int[] temp=new int[data.length]; #Cvjv;
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mergeSort(data,temp,0,data.length-1); vy1:>N?#5
} J L`n12$m
gAgzM?A1(
private void mergeSort(int[] data, int[] temp, int l, int r) { ,V.X-`Y
int i, j, k; :s$ rD
int mid = (l + r) / 2; 0z_e3H{P27
if (l == r) =4m?RPb~b
return; JQi)6A?J
if ((mid - l) >= THRESHOLD) ggJn oL
mergeSort(data, temp, l, mid); O|?>rK
else jUI'F4.5x-
insertSort(data, l, mid - l + 1); wb.47S8
if ((r - mid) > THRESHOLD) !m'lOz
mergeSort(data, temp, mid + 1, r); MY4cMMjp~
else zg0)9br
insertSort(data, mid + 1, r - mid); P8).Qn
Kt;h'?
for (i = l; i <= mid; i++) { _CciU.1k&,
temp = data; 536H*HdN
} x<~ pqq8]
for (j = 1; j <= r - mid; j++) { j2=jD G
temp[r - j + 1] = data[j + mid]; b,]h X
} ^4_. 5~(
int a = temp[l]; j1Q G-Rs&
int b = temp[r]; o.keM4OQ
for (i = l, j = r, k = l; k <= r; k++) { +/-#yfn!TR
if (a < b) { NK$k9,
data[k] = temp[i++]; :
JD%=w_
a = temp; k)1K6ug
} else { j0Kj>
data[k] = temp[j--]; m/Q@ -
b = temp[j]; [- a2<E
} %'%ej^s-R
} /al(=zf
} GTeFDm;T^
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/** bezT\F/\
* @param data @F+4
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* @param l QDF1$,s4i
* @param i .`)\GjDv
*/ &Op, ?\
private void insertSort(int[] data, int start, int len) { 6
GO7[?U<
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); }'b3'/MJ
} -sh S?kV
} 6p1\#6#@
} (I IPrW;>
} mawomna
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堆排序: |ITp$_S
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package org.rut.util.algorithm.support; <IC=x(T
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import org.rut.util.algorithm.SortUtil; 1y2D]h /'
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/** |h\e(_G\
* @author treeroot 'nz;|6uC
* @since 2006-2-2 0~iC#lHO
* @version 1.0 hq6B
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*/ r`qMif'
public class HeapSort implements SortUtil.Sort{ .0:BgM
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/* (non-Javadoc) Kyt.[" p
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yM}}mypS
*/ <Bn^+u \
public void sort(int[] data) { *p`0dvXG2
MaxHeap h=new MaxHeap(); AjKP -[
h.init(data); J*o :RnB
for(int i=0;i h.remove(); y>Zvos e
System.arraycopy(h.queue,1,data,0,data.length); e6z;;C@'G
} lM86 *g 'l
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private static class MaxHeap{ m4bfW
h$F;=YS
void init(int[] data){ o@>{kzCx
this.queue=new int[data.length+1]; 9f+|m9~2
for(int i=0;i queue[++size]=data; w<3}(1
fixUp(size); ZM K"3c9
} ^1s!OT Is
} Zf68EB
'b:e`2fl
private int size=0; }__g\?Yf
bE#=\kf|
private int[] queue; (~:k70V5
*%l&'+
public int get() { zpV@{%VSj
return queue[1]; x%23oPM
} `zGK$,[%
3$ cDC8
public void remove() { %Koc^
pb)
SortUtil.swap(queue,1,size--); J]UlCg
fixDown(1); %_0,z`f
} bj\v0NKN4
file://fixdown {_0Efc=7
private void fixDown(int k) { WMnR+?q
int j; JZQkr
while ((j = k << 1) <= size) { ] e!CH
<N
if (j < size %26amp;%26amp; queue[j] j++; c9-$td&
if (queue[k]>queue[j]) file://不用交换 f{xR
s-u]
break; EAn}8#r'(8
SortUtil.swap(queue,j,k); >y m MQEX`
k = j; U_v{Vs
} )67_yHW
} `au('
xi<
private void fixUp(int k) { z`qBs
while (k > 1) { \kqa4{7 U(
int j = k >> 1; !8yw!hA
if (queue[j]>queue[k]) CP_ ?DyWU
break; .281;] =
SortUtil.swap(queue,j,k); P*oKcq1R
k = j; j}uFp|df<
} ,B%M P<Rz1
} xB_F?d40T5
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} E{kh)-
AWHB^}!}
} e:hkWcV
m(>_C~rGN
SortUtil: gvvl3`S{
zvf:*Na")
package org.rut.util.algorithm; ;F9<Yv
b}S}OW2
import org.rut.util.algorithm.support.BubbleSort; |Ak>kQJ(1z
import org.rut.util.algorithm.support.HeapSort; eZWN9#p2
import org.rut.util.algorithm.support.ImprovedMergeSort; M[ $(Pu
import org.rut.util.algorithm.support.ImprovedQuickSort; Qna
^Ry?6)
import org.rut.util.algorithm.support.InsertSort; !-b4@=f:
import org.rut.util.algorithm.support.MergeSort; ,cPNZ-%
import org.rut.util.algorithm.support.QuickSort; mt3j- Mw
import org.rut.util.algorithm.support.SelectionSort; La48M'u
import org.rut.util.algorithm.support.ShellSort; J;h4)w~9H3
[RCUP.
/** Gc>bli<-
* @author treeroot LWHP31{R
* @since 2006-2-2 5%"${ywI
* @version 1.0 ?z% @;&
*/ 9 P_`IsVK
public class SortUtil { hO(8v&ns3
public final static int INSERT = 1; lA {
public final static int BUBBLE = 2; s:lar4>kM
public final static int SELECTION = 3; ]2(vO0~
public final static int SHELL = 4; _
vVw2HH
public final static int QUICK = 5; rGuhYYvK
public final static int IMPROVED_QUICK = 6; []:;8fY
public final static int MERGE = 7; h^^zR)EVb
public final static int IMPROVED_MERGE = 8; 4[a?..X
public final static int HEAP = 9; e`k6YO
fL.;-
public static void sort(int[] data) { =MDir$1Z
sort(data, IMPROVED_QUICK); zIt-mU
} U^vQr%ha
private static String[] name={ s^ rO I~
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Nv "R'Pps
}; *vv<@+gA
aSd$;t~
private static Sort[] impl=new Sort[]{ 1MHP#X;|
new InsertSort(), m6^Ua
new BubbleSort(), I"Y d6M%
;
new SelectionSort(), 4*MjDb
new ShellSort(), _a@&$NEox
new QuickSort(), (rO_Vfaa
new ImprovedQuickSort(), @;kw6f:{d
new MergeSort(), pg~vteq5
new ImprovedMergeSort(), ?g%5 d
new HeapSort() E]w1!Ah M
}; >JwdVy^
r@FdxsCnGM
public static String toString(int algorithm){ H`q" _p:
return name[algorithm-1]; BT;hW7){9
} rHPda?&H
E@TX>M-&
public static void sort(int[] data, int algorithm) { WRU/^g3O@'
impl[algorithm-1].sort(data); I\DmVc\l
} T:o!H
Xdj^
'EU{%\qM
public static interface Sort { 0fA42*s;
public void sort(int[] data); ]#R'hL%f
} ?g|K"P<1
v{`Z
public static void swap(int[] data, int i, int j) { K y~
9's
int temp = data; 6l&m+!i
data = data[j]; &i"33.#]
data[j] = temp; jm&?;~>O
} I2kqA5>)j
} JbpKstc;