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。 m0: IFE($
插入排序: 'zEmg}
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package org.rut.util.algorithm.support; 5gdsV4DH$
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import org.rut.util.algorithm.SortUtil; 9^ DXw!
/** J=%(f1X<W
* @author treeroot 20Umjw.D
* @since 2006-2-2 [VD)DO5
* @version 1.0 {Qe7/ln!
*/ V Z#@7t
public class InsertSort implements SortUtil.Sort{ %Sgdhgk1
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/* (non-Javadoc) 2MV!@rx
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jkzC^aG
*/ l7+[Zn/v *
public void sort(int[] data) { ;;A8TcE
'
int temp; 4iXB`@k
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); R\^n2gK
} u%o2BLx
} 4RLuv?,)~
} &<oZl.T
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} \:'|4D]'I
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冒泡排序: aSN"MTw.
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package org.rut.util.algorithm.support; yF~iVt
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import org.rut.util.algorithm.SortUtil; qu}&4_`%:V
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/** q ,C)AZ
* @author treeroot W)RCo}f
* @since 2006-2-2 G2
* @version 1.0 >ZE8EL
*/ k*?Axk#
public class BubbleSort implements SortUtil.Sort{ ?`,Rkg0fe
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/* (non-Javadoc) .4t-5,7s%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q|;Sn
*/ #o(c=
public void sort(int[] data) { F$|Ec9
int temp; L\CufAN
for(int i=0;i for(int j=data.length-1;j>i;j--){ myR}~Cj;q
if(data[j] SortUtil.swap(data,j,j-1); K&\3j-8^
} yV'<l
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} hC nqe
} lZt{L0
} Y$@?Y/rhR
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} g9rsw7
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选择排序: &!adW@y
;;*'<\lP.j
package org.rut.util.algorithm.support; Q>G lA
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import org.rut.util.algorithm.SortUtil; !oJ226>WI
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/** $bGe1\
* @author treeroot kVH^(Pi
* @since 2006-2-2 r"%uP[H
* @version 1.0 UP8=V>T02
*/ 5D~>Ed;
public class SelectionSort implements SortUtil.Sort { |t1ij'N
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/* :k-(%E](
* (non-Javadoc) VSxls
* cNd;qO0$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K;n5[o&c
*/ IK
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public void sort(int[] data) { !%1=|PX_
int temp; pejG%pJ
for (int i = 0; i < data.length; i++) { m^9[k,;K
int lowIndex = i; [pc6!qhDG&
for (int j = data.length - 1; j > i; j--) { W@T_-pTCjK
if (data[j] < data[lowIndex]) { hDP&~Mk
lowIndex = j; M_ GN3
} Buv4&.Z}
} ZjOUk;H?
SortUtil.swap(data,i,lowIndex); `;:zZ8*
} B?-~f^*,jG
}
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} SU {U+
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Shell排序: ;'|Mt)\
uia[>&2
package org.rut.util.algorithm.support; 3hPj;-u
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import org.rut.util.algorithm.SortUtil; M.[A%_|P
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I
/** ?)60JWOJ1
* @author treeroot #wvmVB. 5~
* @since 2006-2-2 :'t+*{ff
* @version 1.0 W{{{c2 .
*/ nJ ZQRRa:C
public class ShellSort implements SortUtil.Sort{ ?eU=xO
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/* (non-Javadoc) Gp PlO]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]h`<E~
*/ xpzQ"'be
public void sort(int[] data) { Hy_}e"
for(int i=data.length/2;i>2;i/=2){ 2".^Ma^D!
for(int j=0;j insertSort(data,j,i); clcj5=:
} 4)IRm2G
} s-z*Lq*
insertSort(data,0,1); QIcg4\d%s
} 9T#JlV
EE^
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/** 1l~(J:DT
* @param data }'FNGn.~#
* @param j C8J3^?7E
* @param i >`@c9
m
*/ tR;? o,T
private void insertSort(int[] data, int start, int inc) { s*XwU
int temp; itp$c|{
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); :Hn*|+'
} ^LO`6,
} \k8| 3Y~g
} 9qqzCMrI0e
Y?^1=9?6
} '%D$|)
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快速排序: @`hnp:
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package org.rut.util.algorithm.support; T9c=As_EM
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import org.rut.util.algorithm.SortUtil; UT^-!L
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/** g#=~A&4q
* @author treeroot 1e0O-aT#Q
* @since 2006-2-2 K yqFeR
* @version 1.0 :EXH8n&|
*/ N~w4|q!]
public class QuickSort implements SortUtil.Sort{ Fp`MX>F
bc".R]
/* (non-Javadoc) U;QN+fF]u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CQLh;W`Dc
*/ XO=UKk+EK
public void sort(int[] data) { CUS^j
quickSort(data,0,data.length-1); kH)JBx.
} GmA5E
private void quickSort(int[] data,int i,int j){ 0Q]p#;
int pivotIndex=(i+j)/2; %?4G^f
file://swap !Gphs`YI
SortUtil.swap(data,pivotIndex,j); P@u&~RN9f+
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int k=partition(data,i-1,j,data[j]); (4U59<ie
SortUtil.swap(data,k,j); Ix"hl0Kh
if((k-i)>1) quickSort(data,i,k-1); [\j@_YYd
if((j-k)>1) quickSort(data,k+1,j); Tath9wlv6;
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} 4/Vy@h"A3
/** hKT ]M[Pv
* @param data N'#Lb0`B
* @param i dwQ*OxFl
* @param j &.\|w
* @return ()E:gqQ
*/ +hz^( I7
private int partition(int[] data, int l, int r,int pivot) { )>! IY Q
do{ )<6zbG
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); lO+<T[
SortUtil.swap(data,l,r); "/EE$eU
} Lnk!zj
while(l SortUtil.swap(data,l,r); +Rtz`V1d
return l; +18)e;
} Ozygr?*X
~okIiC]#
} #$vef
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改进后的快速排序: .CrrjS w
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package org.rut.util.algorithm.support; H& #Od?
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import org.rut.util.algorithm.SortUtil; -V'`;zE6
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/** "hRY+{m
* @author treeroot [N|/d#
* @since 2006-2-2 NZ\aK}?~!
* @version 1.0 !eoN
*/ O1o.^i$-M
public class ImprovedQuickSort implements SortUtil.Sort { 8tc9H}>
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private static int MAX_STACK_SIZE=4096; 2C@hjw(
private static int THRESHOLD=10; OFJ
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/* (non-Javadoc) -jZP&8dPH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /nK)esB1L
*/ bw@DcT&,
public void sort(int[] data) { S=Ihg
int[] stack=new int[MAX_STACK_SIZE]; @~!1wPvF`I
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int top=-1; >.D0McQg
int pivot; (3RU|4Ks
int pivotIndex,l,r; <JA`e+Bi
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stack[++top]=0; L`i#yXR
stack[++top]=data.length-1; +s6wF{
)P^5L<q>|
while(top>0){ (8!#<$
int j=stack[top--]; iL-I#"qT,
int i=stack[top--]; 7k<4/|CQ{
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pivotIndex=(i+j)/2; )e)@_0
pivot=data[pivotIndex]; o:\RJig<
TtL2}Wdd.%
SortUtil.swap(data,pivotIndex,j); Jmb [d\ /D
q%4l!gzF3
file://partition LE_1H>
l=i-1; $*| :A
r=j; :<%q9)aPf`
do{
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); mm3goIi;Y
SortUtil.swap(data,l,r); )Oq N\
} {cF7h)j
while(l SortUtil.swap(data,l,r); \?,'i/c-
SortUtil.swap(data,l,j); _tfZg /+)
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if((l-i)>THRESHOLD){ >'i
d/
stack[++top]=i; `Z{kJMS
stack[++top]=l-1; fhu-YYJt
}
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if((j-l)>THRESHOLD){ Ejdw"P"
stack[++top]=l+1; >G2o
stack[++top]=j; %Fc,$ =
} j+3~
]JX0:'x^
} s,TKC67.%+
file://new InsertSort().sort(data); o~
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insertSort(data); W{Cc wq
} QdKxuG
/** (o_fY.
* @param data %/dYSC
*/ .>0e?A4,5?
private void insertSort(int[] data) { "(}xIsy
int temp; y2V9!
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $]CZ]EWts
} Vw*;xek?
} ce{GpmW
} 4BG6C'`%
L<>;E
} tb7Wr1$<
#Zpp*S55
归并排序: (Rvke!"B
Wh%qvV6]
package org.rut.util.algorithm.support; SGW2'
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import org.rut.util.algorithm.SortUtil; UXvk5t1
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/** e{/(NtKf
* @author treeroot p.q:vI$J
* @since 2006-2-2 B]< 6\Z?=
* @version 1.0 ^*C+^l&J!
*/ sXI_!)H
public class MergeSort implements SortUtil.Sort{ C~vU
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/* (non-Javadoc) 3A k,M-Jp
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~V?O%1)k?\
*/ A)En25,X
public void sort(int[] data) { >_U)=q
int[] temp=new int[data.length]; GzK{.xf
mergeSort(data,temp,0,data.length-1); 4-[L^1%S[
} 8WU
UE=p
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private void mergeSort(int[] data,int[] temp,int l,int r){ )t{oyBT
int mid=(l+r)/2; chsjY]b
if(l==r) return ; 2Z6#3~
mergeSort(data,temp,l,mid); GZ\;M6{oh
mergeSort(data,temp,mid+1,r); 58*s\*V`\
for(int i=l;i<=r;i++){ SN|EWe^
temp=data; (yE?)s
} ~=HN30
int i1=l; w[z^B&
int i2=mid+1; ~.M{n&NM
for(int cur=l;cur<=r;cur++){ bD<[OerG
if(i1==mid+1) 9|T%q2O
data[cur]=temp[i2++]; y3$i?}?A
else if(i2>r) :W,6zv(..u
data[cur]=temp[i1++]; M#on-[
else if(temp[i1] data[cur]=temp[i1++]; {*H&NI
else Pze$QBNoRd
data[cur]=temp[i2++]; \t'(&taX<
} < pI2}
} _3h(R`VdWO
cTmoz.0
} JwbC3t):@
Nm%&xm
改进后的归并排序: |@={:gRJ{x
(7x5
package org.rut.util.algorithm.support; 6%NX|4_
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import org.rut.util.algorithm.SortUtil; DF'-dh</*
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/** bL
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* @author treeroot V'~]b~R
* @since 2006-2-2 Z{`;Ys:zk
* @version 1.0 bp2l%A;
*/ R-J\c+C>W
public class ImprovedMergeSort implements SortUtil.Sort { Nh~ Hh(
VO>A+vx3M
private static final int THRESHOLD = 10; +Y,>ftN
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/* |c,":R
* (non-Javadoc) STs~GOm-
* QRXsLdf$$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^ng#J\
*/ zcD&xoL\H
public void sort(int[] data) { ./mh9ax
int[] temp=new int[data.length]; bT}P":*y
mergeSort(data,temp,0,data.length-1); CQ2{5
} bCg
{z b#
(E59)z -
private void mergeSort(int[] data, int[] temp, int l, int r) {
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int i, j, k; VYkOJAEBg
int mid = (l + r) / 2; p*F&G=ZE
if (l == r) #_y#sDfzh
return; *}Zd QJL
if ((mid - l) >= THRESHOLD) cBM
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mergeSort(data, temp, l, mid); ),0_ C\
else 8I04Nx
insertSort(data, l, mid - l + 1); oAe]/ j$
if ((r - mid) > THRESHOLD) ]K0<DO9
mergeSort(data, temp, mid + 1, r); UA/Q3)
else mv%fX2.
insertSort(data, mid + 1, r - mid); lz@fXaZM
ZO{uG(u
for (i = l; i <= mid; i++) { k_#ra7zP
temp = data; -EFtk\/
} 64>E|w
for (j = 1; j <= r - mid; j++) { jDIO,XuF
temp[r - j + 1] = data[j + mid]; |Y"q. n77
} 5b3Wt7
int a = temp[l]; FGu:8`c9
int b = temp[r]; $n& alcU
for (i = l, j = r, k = l; k <= r; k++) { Jf@M>BT^A
if (a < b) { Z+)R%Z'aL
data[k] = temp[i++]; <",4O
a = temp; 4m$n Vv
} else { ,x!P|\w.G{
data[k] = temp[j--]; w-};\]I
b = temp[j]; YvE$fX=
} 2Ch!LS:+
} g
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} LEvdPG$)
G`PSb<h\oc
/** mm\Jf
* @param data `o
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* @param l ct=|y(_
* @param i 7(^<Z5@
*/ G!T)V2y
private void insertSort(int[] data, int start, int len) { zg2A$Fd[j
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Oyhl*`-*t
} xi8RE@gm
} E{sTxOI$
} |;ycEB1
} :XcU @m
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堆排序: #ebT$hf30
@FIR9XJ
package org.rut.util.algorithm.support; ug0[*#|Y
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import org.rut.util.algorithm.SortUtil; D`0II=
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/** q3JoU/Sf
* @author treeroot EC$wi|i
* @since 2006-2-2 p}_bu@;.Z
* @version 1.0 {^>m3
*/ JYOyz+wNd
public class HeapSort implements SortUtil.Sort{ )Yz`
6
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/* (non-Javadoc) A>(m}P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *,{. oO9#
*/ ;H/*%2
public void sort(int[] data) { 2+
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MaxHeap h=new MaxHeap(); &^FCp'J-
h.init(data); iq-n(Rfw~
for(int i=0;i h.remove(); 2-j+-B|i
System.arraycopy(h.queue,1,data,0,data.length); , .uu/qV}w
} RzQ1Wq
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private static class MaxHeap{ 8:0QI kqk
3]WIN_h
void init(int[] data){ JVf8KHDj
this.queue=new int[data.length+1]; _JOrGVmD
for(int i=0;i queue[++size]=data; aAiSP+#
fixUp(size); #P=rP=
} VI0^Zq!6R
} &G7JGar
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private int size=0; B-ReBtN
wX@&Qv
private int[] queue; [?iA`#^d
$wH{snX
public int get() { ;0O3b
return queue[1]; q]YPDdR#
} "8%B
(a
5A
xOP%SF
public void remove() { gN1b?_g
SortUtil.swap(queue,1,size--); <KqZ.7XfB
fixDown(1); m]}
E0
} XWV)
file://fixdown 5p}Y6Lc\j
private void fixDown(int k) { v~e@:7d i
int j; j*nZ
while ((j = k << 1) <= size) { 8PB(<|}u
if (j < size %26amp;%26amp; queue[j] j++; _'0HkT{I
if (queue[k]>queue[j]) file://不用交换 r-v;A
break; (xpj?zlmM
SortUtil.swap(queue,j,k); =`[08
k = j; =Ig'Aw$ x
} v Ic0V
} 3P~I'FQ
private void fixUp(int k) { u@5vK2
while (k > 1) { /:d03N\9k
int j = k >> 1; _}R?&yO
if (queue[j]>queue[k]) U*`7
break; (g
xCP3
SortUtil.swap(queue,j,k); I1yZ7QY
k = j; zJWBovT/
} 0'*whhH
} ]4-lrI1#
."Wdpf`~
} BM!\U 6
G[n^SEY!
} 0"7xCx
#XR<}OYcL
SortUtil: Hq[d!qc
)kR~|Yn<-
package org.rut.util.algorithm; /KjRB_5~q}
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import org.rut.util.algorithm.support.BubbleSort; h
92\1,
import org.rut.util.algorithm.support.HeapSort; eBX#^
import org.rut.util.algorithm.support.ImprovedMergeSort; 87P{vf#
import org.rut.util.algorithm.support.ImprovedQuickSort; [~9rp]<
import org.rut.util.algorithm.support.InsertSort; '#gd19#
import org.rut.util.algorithm.support.MergeSort; ]C_g:|q
import org.rut.util.algorithm.support.QuickSort; #7I,.DUy[
import org.rut.util.algorithm.support.SelectionSort; x4fl=
import org.rut.util.algorithm.support.ShellSort; ,o7aIg&_H
tgK$}#.*
/** uSCF;y=1g,
* @author treeroot QEK,mc3
* @since 2006-2-2 {Ak{
ct\t
* @version 1.0 t=syo->
*/ [T#5$J
public class SortUtil { rTYDa3
public final static int INSERT = 1; sc'QNhrW
public final static int BUBBLE = 2; *t J+!1
public final static int SELECTION = 3; __r]@hY
public final static int SHELL = 4; |&B.YLx
public final static int QUICK = 5; \9;u.&$mNB
public final static int IMPROVED_QUICK = 6; jjbBv~vs
public final static int MERGE = 7; Ab`mID:
public final static int IMPROVED_MERGE = 8; P/snzm|@
public final static int HEAP = 9; UOHU1.3$T
rU<NHFGj4
public static void sort(int[] data) { s''?:
+
sort(data, IMPROVED_QUICK); h1@|UxaE#
} }[XzM/t
private static String[] name={ k<RJSK8
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" .WM 0x{t/
}; l0AgW_T
}MAQhXI^O|
private static Sort[] impl=new Sort[]{ ufAp7m@ud
new InsertSort(), =<w6yeko
new BubbleSort(), d!kiWmw,
new SelectionSort(), wJ@8-H 8}
new ShellSort(), q(<#7spz
new QuickSort(), <ABN/nH
new ImprovedQuickSort(), RB<LZHZI
new MergeSort(), | n5F_RL
new ImprovedMergeSort(), CY;ML6c@
new HeapSort() G6K;3B
}; (,1}P
oR (hL4Dc
public static String toString(int algorithm){ v(D{_
return name[algorithm-1]; AujvKQ(
} HL$}Gh]q
dd1m~Gm
public static void sort(int[] data, int algorithm) { W$LaXytmak
impl[algorithm-1].sort(data); U;Z6o1G
} dK'?<w$
{o"X8
public static interface Sort { RN\4y{@
public void sort(int[] data); 54~`8f
} 4]9+
nB"r<?n<
public static void swap(int[] data, int i, int j) { &os9K)
int temp = data; KtzoL#CT
data = data[j]; @w&VI6
data[j] = temp; p48M7OV
} 0STtwfTr:
} XH4!|wz