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。 DOXRU5uP3
插入排序: _OF8D
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package org.rut.util.algorithm.support; omV.Qb'NS
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import org.rut.util.algorithm.SortUtil; d]e`t"Aj
/** 55oLj.l^j
* @author treeroot <EI'N0~KG
* @since 2006-2-2 !qH=l-7A
* @version 1.0 $ZDh8
*ND
*/ 1F5F2OT$8
public class InsertSort implements SortUtil.Sort{ T^GdN_qF
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/* (non-Javadoc) {\t:{.F
A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |y%pP/;&!
*/ (6\A"jey\x
public void sort(int[] data) { O)5-6lm
int temp; cQPH le2
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _@jKFDPL
} &TbnZnv
} #G#gB
} oRu S_X
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} kX1hcAa
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冒泡排序: fWm;cDM
H
d(a6vEL4
package org.rut.util.algorithm.support; :OI!YR%"
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import org.rut.util.algorithm.SortUtil; uR"]w7=
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/** k5xirB_
* @author treeroot Q}2w~Cn\S
* @since 2006-2-2 gdC=SFb b
* @version 1.0 P6=|C;[
*/ C1G Wi4)
public class BubbleSort implements SortUtil.Sort{ 0XozYyq
2N,*S
/* (non-Javadoc) G>_ZUHdI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SyYa_=En
*/ Nq~bO_-I
public void sort(int[] data) { sox90o 7
int temp; 3 oWCQ
for(int i=0;i for(int j=data.length-1;j>i;j--){ "J{,P9P6
if(data[j] SortUtil.swap(data,j,j-1); ac&tpvij
} L7xTAFe
} 5!cplx=<
} ?y04g u6p
} :!A@B.E
z(%Zji@!N
} W4YC5ZH{l
krl yEAK=
选择排序: >$"bwr}'4B
/cjf 1Dc
package org.rut.util.algorithm.support; H+0 *
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import org.rut.util.algorithm.SortUtil; L"b5P2{c
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L1
/** QnGJ4F
* @author treeroot } M~AkJL
* @since 2006-2-2 (?3(=+t
* @version 1.0 ?NwFpSB2
*/ ,,iQG' *
public class SelectionSort implements SortUtil.Sort { r-V./M@L
l;;:3:
/* W.CIyGK
* (non-Javadoc) >3Y&jsh<
* Je*gMq:D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *LhR$(F(
*/ )i>KYg w
public void sort(int[] data) { >%[W2L\'
int temp; 5y~[2jB:
for (int i = 0; i < data.length; i++) { UmJg-~
int lowIndex = i; HU'E}8%t6
for (int j = data.length - 1; j > i; j--) { FJ[(dGKeE
if (data[j] < data[lowIndex]) { JEd/j
zR(
lowIndex = j; v]1rH$
} 6Rt pB\hq
} '\;tmD"N5#
SortUtil.swap(data,i,lowIndex); :dj@i6
} l-npz)EM
} }Ag2c; aaq
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} s-DtkO
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Shell排序: &S{F"z
oc?VAF
package org.rut.util.algorithm.support; &KB{,:)?
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import org.rut.util.algorithm.SortUtil; c*W$wr
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/** }qg!Um0
* @author treeroot Tld{b
* @since 2006-2-2 R3<+z
* @version 1.0 $200?[
*/ qnlj~]NV
public class ShellSort implements SortUtil.Sort{ npF[J x[
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/* (non-Javadoc) =sm(Z;"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YUH/tl
*/ M1i|qjb:l
public void sort(int[] data) { Psv!`K
for(int i=data.length/2;i>2;i/=2){ xWMMHIu
for(int j=0;j insertSort(data,j,i); 'SY&-<t(
} 3_ >R's8P
} }0TY
insertSort(data,0,1); ?b0\[
} ,)RdXgCs
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/** )>/c/B
* @param data
96BMJE'
* @param j G1l(
* @param i GB=q}@&8p
*/ hG67%T'}A
private void insertSort(int[] data, int start, int inc) { Uwp
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int temp; cQR1v-Xt
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); +EB##
} y\[=#g1(@
} 7PMZt$n
} ^#4s/mdVO
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} C/bttd
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快速排序: 2*M*<p=v
x\%egw
package org.rut.util.algorithm.support; xv:?n^yt.[
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import org.rut.util.algorithm.SortUtil; aI<~+ ]
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/** !2Orklzd1
* @author treeroot /F_
:@#H
* @since 2006-2-2 JVkawkeX
* @version 1.0 DHAWUS6
*/ ~JXHBX
public class QuickSort implements SortUtil.Sort{ %Z7!9+<
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/* (non-Javadoc) B'Wky>5)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _=8+_OEk
*/ T)u w2
public void sort(int[] data) { #^9;<@M
quickSort(data,0,data.length-1); cC4T3]4l'
} Zx_m?C_2_
private void quickSort(int[] data,int i,int j){ e-VLU;
int pivotIndex=(i+j)/2; !r|X6`g
file://swap 9<#D0hh$
SortUtil.swap(data,pivotIndex,j); >=V+X"\Z
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int k=partition(data,i-1,j,data[j]); <-F"&LI{<
SortUtil.swap(data,k,j); pV7Gh`<y
if((k-i)>1) quickSort(data,i,k-1); p[b\x_0%c
if((j-k)>1) quickSort(data,k+1,j); ZYA(Bg^
+RkYW*|$S
} tX251S
/** @>Keu\)
* @param data {UcItLjY
* @param i k@L~h{`Mc\
* @param j =CoT{LRQ_
* @return 'm|m+K83
*/ HhL%iy1
private int partition(int[] data, int l, int r,int pivot) { 0U>Q<I}
do{ V%ch'
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 4i,SiFKB
SortUtil.swap(data,l,r); Bu1z$#AC
} #lF<="y%X
while(l SortUtil.swap(data,l,r); c
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return l; *3$,f>W^
} mV,R0olF
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} X2cR+Ha0
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改进后的快速排序: h6*`V
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package org.rut.util.algorithm.support; |Z ,G
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import org.rut.util.algorithm.SortUtil; $1+K}tP
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/** Nd!VR+IZ
* @author treeroot vi8~j
* @since 2006-2-2 F:S,{&jB
* @version 1.0 W[Bu&?h$
*/ "NU".q
public class ImprovedQuickSort implements SortUtil.Sort { ?N*0S'dY
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private static int MAX_STACK_SIZE=4096; !9,
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private static int THRESHOLD=10; $VWzv4^:
/* (non-Javadoc) 0>iFXw:fn
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l,.?-|Poa
*/ h
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public void sort(int[] data) { ]ufW61W6Ci
int[] stack=new int[MAX_STACK_SIZE]; Db(_T8sU
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int top=-1; 7X(]r1-+\
int pivot; :OCuxSc%5
int pivotIndex,l,r; U*Qq5=dqD
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stack[++top]=0; 4_+Pv6
stack[++top]=data.length-1; K//T}-Uub
VA'X!(Cv
while(top>0){ }4SSo)Uv/
int j=stack[top--]; Y/H^*1
int i=stack[top--]; xXZKj
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pivotIndex=(i+j)/2; n=? 0g;1!
pivot=data[pivotIndex]; ,g_onfY
6
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SortUtil.swap(data,pivotIndex,j); 0j(jJAE.
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file://partition SDHc[66'
l=i-1; nKB&|!
r=j; ti^v%+r1
do{ c^O#O
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); z,FTsR$x
SortUtil.swap(data,l,r); _I_?k+#WFe
} UglG!1L
while(l SortUtil.swap(data,l,r); A&c@8
SortUtil.swap(data,l,j); ]TgP!M&q
O}_a3>1DY
if((l-i)>THRESHOLD){ _AYC|R|
stack[++top]=i; EWIc|b:
stack[++top]=l-1; 3]<re{)J9O
} ;#s}b1
if((j-l)>THRESHOLD){ liqR#<
stack[++top]=l+1;
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stack[++top]=j; lVdT^"~3
} M~Qj'VVL
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+)/$4
} =kh>s$We
file://new InsertSort().sort(data); >:E*7
insertSort(data); f&}A!uLe4x
} lhoq3A
/** d-;9L56{P
* @param data fu<2t$Cn>
*/ `E5"Pmg
private void insertSort(int[] data) { rA1r#ksQ
int temp; u=;nU(]M '
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); rLh9`0|D
} VS|("**
} X@qk> /
} UIOEkQ\Wl
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} BwJ^_:(p~
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归并排序: 1N9<d,
6WN(22Io
package org.rut.util.algorithm.support; C`n9/[,#
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import org.rut.util.algorithm.SortUtil; Tz[?gF.Do
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/** eR-=<0Iw;
* @author treeroot y[p$/$bgC5
* @since 2006-2-2
ml.;wB|
* @version 1.0 #M?F^u[
*/ LxlbD#<V
public class MergeSort implements SortUtil.Sort{ 7~"(+f
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/* (non-Javadoc) /3Nb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Pc)VK>.fc
*/ U2V^T'Y[
public void sort(int[] data) { .L7Yf+yFg
int[] temp=new int[data.length]; /Y[o=Uyl
mergeSort(data,temp,0,data.length-1); -nk#d%a\
} FU\/JF.j
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private void mergeSort(int[] data,int[] temp,int l,int r){ )ojx_3j8
int mid=(l+r)/2; Nxb\[
if(l==r) return ; h zZ-$IX X
mergeSort(data,temp,l,mid); cc41b*ci$
mergeSort(data,temp,mid+1,r); R6q4 ["
for(int i=l;i<=r;i++){ z0 2}&^Zzk
temp=data; 8jggc#.
} 5,
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int i1=l; wI!
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int i2=mid+1; t0e{|du
for(int cur=l;cur<=r;cur++){ ^+*GbY$'
if(i1==mid+1) hB?,7-
data[cur]=temp[i2++]; VJN/#
else if(i2>r) x^)g'16`
data[cur]=temp[i1++]; ^p 2.UW
else if(temp[i1] data[cur]=temp[i1++]; g={]Mzh
else 2"leUur~rO
data[cur]=temp[i2++]; 1Sg|3T8bGT
} f4'El2>-86
} {jOzap|
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} )C>}"#J>
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改进后的归并排序: 3J'73)y
hIVI\U,
package org.rut.util.algorithm.support; 3cOY0Z#T
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import org.rut.util.algorithm.SortUtil; E+}GxFG-:
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/** &@YFje6Lcm
* @author treeroot n .f4z<
* @since 2006-2-2 AozmO
* @version 1.0 @sw9A93A
*/ \fK47oV
public class ImprovedMergeSort implements SortUtil.Sort { |P~O15V*Q
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private static final int THRESHOLD = 10; nTys4R
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/* =Kc|C~g
* (non-Javadoc) EqD^/(,L2
* j?:`-\w5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?}'N_n ys
*/ J?UA:u
public void sort(int[] data) { [)#u<lZ<~
int[] temp=new int[data.length]; /Jxq
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mergeSort(data,temp,0,data.length-1); m$fQ `XzU
} 9ZDVy7m\i-
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private void mergeSort(int[] data, int[] temp, int l, int r) { n1QEu"~Zj
int i, j, k; `d7gm;ykp
int mid = (l + r) / 2; s0cs'Rg
if (l == r) nJFk4v4:2
return; .E+OmJwD
if ((mid - l) >= THRESHOLD) |7 &|>
mergeSort(data, temp, l, mid); EKZA5J7kn
else |DN^NhtE
insertSort(data, l, mid - l + 1); Hf VHI1f
if ((r - mid) > THRESHOLD) )@}A
r
mergeSort(data, temp, mid + 1, r); 9wL!D3e
{Q
else tT;8r8@
insertSort(data, mid + 1, r - mid); j~Q}F |i8
.#*D!;f
for (i = l; i <= mid; i++) { t]s94 R q
temp = data; Ri|k<io
} ,H>W:O
for (j = 1; j <= r - mid; j++) { NW
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temp[r - j + 1] = data[j + mid]; sffhPX\I
} glv ;C/l
int a = temp[l]; (tepmcf
int b = temp[r]; oP/>ju
for (i = l, j = r, k = l; k <= r; k++) { SOVjEo4'3
if (a < b) { {'NBp0i
data[k] = temp[i++]; d]U`?A,
a = temp; R.K?
} else { PPEq6}
data[k] = temp[j--]; +A@m9
b = temp[j]; ;; :">@5
} 5J
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} _=pWG^a
}
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Z a!
gbt
/** AcKU^T+
* @param data B`i$Wt<7
* @param l le.anJAr
* @param i 69>/@<
*/ 6,X+1EXY
private void insertSort(int[] data, int start, int len) { 1Pm4.C)
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); x|8^i6xB
} 8) HBh7/
} 7'z(~3D
} p!_[qs
} n+2%tW
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堆排序: P1MvtI4gm
J96uyS*
package org.rut.util.algorithm.support; [@/ /#}5v
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import org.rut.util.algorithm.SortUtil; &=X.*H%
>%u@R3PH]
/** |d[5l^6
* @author treeroot X3<K 1/<
* @since 2006-2-2 #AShbl jm+
* @version 1.0 PQ$sOK|/
*/ wjrG7*_Y4v
public class HeapSort implements SortUtil.Sort{ V4|uas{0I:
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/* (non-Javadoc) h$`#YNd'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d`mD!)j
*/ Ke!'gohv
public void sort(int[] data) { BgM%+b8u
MaxHeap h=new MaxHeap(); k=$AhT=e}n
h.init(data); 3@_Elu
for(int i=0;i h.remove(); s3:9$.tiR[
System.arraycopy(h.queue,1,data,0,data.length); \9/RAY_G
} DN_W.o
0OnV0SIL
private static class MaxHeap{ ~W-cGb3c
u#@RM^738d
void init(int[] data){ p$Hi[upy
this.queue=new int[data.length+1]; rQb7?O@-
for(int i=0;i queue[++size]=data; '1Y\[T*
fixUp(size); eVJ^\z:4
} bWmw3w
} ?IF)+]
* ?]~
#
private int size=0; >P=Q #;v
d|lpec
private int[] queue; =n+ \\D
eTbg7"waA
public int get() { ,6{iT,~@8
return queue[1]; JeCg|@
} v-Qmx-N
wNYg$d0M
public void remove() { __Nv0Ru
SortUtil.swap(queue,1,size--); 69OF_/23
fixDown(1); E=$p^s
} 2YlH}fnH
file://fixdown esX)"_xf
private void fixDown(int k) { b?T
int j; t~hTp K*
while ((j = k << 1) <= size) { =r9r~SR#
if (j < size %26amp;%26amp; queue[j] j++; KC#/Z2A|<
if (queue[k]>queue[j]) file://不用交换 c{Ou^.yR
break; xfFg,9w8
SortUtil.swap(queue,j,k); gE])!GMM3
k = j; M{mSd2
} {A:j[
} :J/M,3
private void fixUp(int k) { NxA)@9Q
while (k > 1) { Hy_;nN+e
int j = k >> 1; ~ G6"3"
if (queue[j]>queue[k]) .iHn5SGA
break; >V$ Gx>I
SortUtil.swap(queue,j,k); ])}]/Qw
k = j; <hx+wrv
} t0)<$At6J
} [p;E~-S
[eUftr9&0
} fo0+dzazY
AUe# RP
} \tN-(=T
E3aDDFDH
SortUtil: 7.g[SBUOG
)"+2Z^1-
package org.rut.util.algorithm; $?P22"/p
jE\Sm2G9
import org.rut.util.algorithm.support.BubbleSort; om h{0jA0
import org.rut.util.algorithm.support.HeapSort; 7U|mu~$.!
import org.rut.util.algorithm.support.ImprovedMergeSort; 0#cy=*E
import org.rut.util.algorithm.support.ImprovedQuickSort; ,yd= e}lQx
import org.rut.util.algorithm.support.InsertSort; _zWfI.o
import org.rut.util.algorithm.support.MergeSort; T0z n,ej
import org.rut.util.algorithm.support.QuickSort; \S~Vx!9w
import org.rut.util.algorithm.support.SelectionSort; .iD*>M:W
import org.rut.util.algorithm.support.ShellSort; !\Xm!I8
T r0B[QF
/** 2L?!tBw?1
* @author treeroot i0jBZW"_1$
* @since 2006-2-2 Bi,;lR5
* @version 1.0 GH1"xR4!
*/ [`RX*OH2
public class SortUtil { s?R2B)a
public final static int INSERT = 1; u8GMUN
public final static int BUBBLE = 2; kOo~%kcQ'
public final static int SELECTION = 3; `;l .MZL!
public final static int SHELL = 4; .iX# A<E}
public final static int QUICK = 5; ?>"Yr,b?
public final static int IMPROVED_QUICK = 6; #~O b)q|
public final static int MERGE = 7; f"1>bW>R+
public final static int IMPROVED_MERGE = 8; *3/T;x.
public final static int HEAP = 9; ]n."<qxeT
::FS/Y]Fg
public static void sort(int[] data) { :>Rv!x`
sort(data, IMPROVED_QUICK); <Z}SKR"U%
} XxIHoX&
private static String[] name={ 3jB$2: #
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" YuZ"s55zU{
}; 3psU?8(
Z_1U9+,
private static Sort[] impl=new Sort[]{ 3"n\8#X{
new InsertSort(), ,L bBpi=TJ
new BubbleSort(), +l3=3
new SelectionSort(), 0sca4G0{
new ShellSort(), Bw%Qbs0Q
new QuickSort(), ,<BbpIQ2o
new ImprovedQuickSort(), *}k;L74|
new MergeSort(), ^sN (
new ImprovedMergeSort(), U8qtwA9t
new HeapSort() LI2&&Mw
}; JM1R ;i6
M])dJ9&e
public static String toString(int algorithm){ ;{h CF
return name[algorithm-1]; +6wiOHB`
} HK|ynBAo
$`R6=\|
public static void sort(int[] data, int algorithm) { Um#Wu]i
impl[algorithm-1].sort(data); PxH72hBS
} D?XM,l+
JRo?s~Ih
public static interface Sort { B#/Q'V
public void sort(int[] data); ;4N;D
} ;q N+^;,2
*HEuorl
public static void swap(int[] data, int i, int j) { >D201&*G%
int temp = data; L|bwZ,M=}?
data = data[j]; q[`j`8YY!R
data[j] = temp; b&1`NO
} jReXyRmo({
} Xp0F
[>h