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。 wvv+~K9jq
插入排序: E'08'8y
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package org.rut.util.algorithm.support; yE:y[k0E
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import org.rut.util.algorithm.SortUtil; 2js/>L0
/** Zxebv#4
* @author treeroot .n8R%|C5
* @since 2006-2-2 (xfc_h*xA
* @version 1.0 *:%&z?<Fw
*/ !0;AFv`\
public class InsertSort implements SortUtil.Sort{ Y{}
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/* (non-Javadoc) ~+Wx\:TT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vjEDd`jYZ
*/ lc,k-}n
public void sort(int[] data) { m?e/MQr
int temp; ~74Sq'j9Wt
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 25X|N=}
} 7-744wV}Z
} (\6E.Z#
} K9N31'
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} *!QmYH5r0
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冒泡排序: 1eI*.pt
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package org.rut.util.algorithm.support; 9Yt|Wj
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import org.rut.util.algorithm.SortUtil; pDS[ecx
iw )gNQ%z4
/** !>48`o^
* @author treeroot 6z\!lOVjb
* @since 2006-2-2 a 0SZw
* @version 1.0 v5[gFY(?
*/ Vn#}f=u\
public class BubbleSort implements SortUtil.Sort{ Ed=/w6<
+hRy{Ps/
/* (non-Javadoc) - Jaee,P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZF7n]LgSc&
*/ g QBS#NY
public void sort(int[] data) { T+Yv5l
int temp; x^lcT
for(int i=0;i for(int j=data.length-1;j>i;j--){ )1At/ mr
if(data[j] SortUtil.swap(data,j,j-1); a6Vfd&
} a*p|Ij
} 9vRLM*9|
} t0e6iof^o
}
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} u62H+'k}F
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选择排序: [n"eD4 )K|
Xt$qjtVM
package org.rut.util.algorithm.support; 6wp1jN
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import org.rut.util.algorithm.SortUtil; 3zsp6k V
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/** OY1bFIE
* @author treeroot v!I z&M:z
* @since 2006-2-2 )@!fLAT
* @version 1.0 !oH{=.w
*/ 6 IvAs-%W
public class SelectionSort implements SortUtil.Sort { -6)n QNj|
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/* h,\{s_b
* (non-Javadoc) xP\s^]e
* #$UwJ B]_D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) onuG
*/ d/
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public void sort(int[] data) { 5(<O?#P
int temp; {IOc'W-C#2
for (int i = 0; i < data.length; i++) { -nGcm"'6F
int lowIndex = i; =-^A;AO(
for (int j = data.length - 1; j > i; j--) { x-i,v"8
if (data[j] < data[lowIndex]) { S(.J
lowIndex = j; vjX,7NY?
} P5my]4|x
} #M!u';bZ
SortUtil.swap(data,i,lowIndex); %oiF} >
} oG)T>L[&
} %U{6 `m
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} EMnz;/dMt
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Shell排序: ;bwBd:Y
nc1~5eo
package org.rut.util.algorithm.support; <VZ43I
0[UI'2
import org.rut.util.algorithm.SortUtil; g;Ugr8
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/** k
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* @author treeroot N[eLQe]q
* @since 2006-2-2 k
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* @version 1.0 )2c]Z|
*/ /)[-5n{
public class ShellSort implements SortUtil.Sort{ Z"c-Ly{vEj
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/* (non-Javadoc) +E.
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bIm4s
*/ 4L>8RiiQE;
public void sort(int[] data) { PxYK)n9&
for(int i=data.length/2;i>2;i/=2){ h GA2.{
for(int j=0;j insertSort(data,j,i); _N;@jq\q
} EY]H*WJJ
} *
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insertSort(data,0,1); =x+1A)Q
} YC;@ ^
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/** a=$ZM4Bn
* @param data xDeM7L'
* @param j aNry> 2:
* @param i L4^/O29
*/ i\lvxbp
private void insertSort(int[] data, int start, int inc) { ~6=6YP
int temp; !{*yWpZ:
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 8^EWD3N`
} i'<hT
q4
} qJF'KHyU{l
} wdj?T`4
<e#v9=}DI
} Q@}SR%p
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快速排序: %UdE2 D'bC
x#E
M)Thq
package org.rut.util.algorithm.support; Q"s6HZ"YI
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import org.rut.util.algorithm.SortUtil; xJ<RQCW$
^/Hf$tYI!`
/** hpQ #`rhn
* @author treeroot 1q;R+65
* @since 2006-2-2 6 wd
* @version 1.0 '{0O!y[H6
*/ P'iX?+*
public class QuickSort implements SortUtil.Sort{ g@x72$j
vE`;1UA}
/* (non-Javadoc) 0Gj/yra9MO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a1_ N~4r`
*/ N5l`Rq^K
public void sort(int[] data) { ax5n}
quickSort(data,0,data.length-1); H,<CR9@(5d
} Zz (qc5o,F
private void quickSort(int[] data,int i,int j){ _*=4xmB.=
int pivotIndex=(i+j)/2; Ng<ic
file://swap o_\vudXK
SortUtil.swap(data,pivotIndex,j); =oXlJ[)h
:$VGqvO12W
int k=partition(data,i-1,j,data[j]); )J]NBE:8
SortUtil.swap(data,k,j); IZdWEbN1
if((k-i)>1) quickSort(data,i,k-1); ~*1Z1aZ
if((j-k)>1) quickSort(data,k+1,j); OqsuuE
Q `K^>L1
} -hfDf{QN
/** wL3BgCxqDL
* @param data gLSI?
* @param i _"F=4`lJ
* @param j ug{sQyLN
* @return |:SV=T:
*/ |Zn;O6c#L5
private int partition(int[] data, int l, int r,int pivot) { ZuWhgnp
do{ e+#Oj
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); jCj8XM{c>
SortUtil.swap(data,l,r); _[8JSw7
} >9XG+f66E
while(l SortUtil.swap(data,l,r); C%z9Q
return l; qm#?DSLap
} j/O9LygB
^{J^oZ'%~
} tag)IWAiE
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改进后的快速排序: o9ys$vXt*
#2\M(5d
package org.rut.util.algorithm.support; Y&M {7
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bp0#K
import org.rut.util.algorithm.SortUtil; G~_eBy
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/** G,6`:l
* @author treeroot zZ9Ei-Q
* @since 2006-2-2 2N-p97"g
* @version 1.0 k^JgCC+
*/ 902A,*qq
public class ImprovedQuickSort implements SortUtil.Sort { EhD%
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private static int MAX_STACK_SIZE=4096; QHXpX9
private static int THRESHOLD=10; _eQ-'")
/* (non-Javadoc) SANbg&$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MS2/<LD3d
*/ wBI:}N@.
public void sort(int[] data) { {a>JQW5=
int[] stack=new int[MAX_STACK_SIZE]; >f9Q&c$R
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int top=-1; *XDe:A
int pivot; 9]chv>dO)=
int pivotIndex,l,r; 1mh7fZgn
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stack[++top]=0; 7!o#pt7
stack[++top]=data.length-1; 1A(f_ 0,.Q
}>f%8O}
while(top>0){ (.z0.0W
int j=stack[top--]; wko9tdC=U
int i=stack[top--]; |J-tU)|1vl
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pivotIndex=(i+j)/2; _MQh<,Z8
pivot=data[pivotIndex]; 9l[C&0w#\
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SortUtil.swap(data,pivotIndex,j); t T
A
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file://partition V#4ox km
l=i-1; {R7RBX
r=j; DjZTr}%q
do{ blG?("0!
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); KKg\n^
SortUtil.swap(data,l,r); :[PA .Upi
} hOqNZ66{
while(l SortUtil.swap(data,l,r); rCGKE`H
SortUtil.swap(data,l,j); Q[!?SSX%
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if((l-i)>THRESHOLD){ gpbdK?
stack[++top]=i; MD0d
stack[++top]=l-1; n68qxD-X
} O#^qd0e'P!
if((j-l)>THRESHOLD){ sV%=z}n=
stack[++top]=l+1; frQ=BV5%6
stack[++top]=j; oY\;KPz
} -G1R><8[
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} ]]u_Mdk
file://new InsertSort().sort(data); rJp9ut'FEz
insertSort(data); o9{1_7K
} s}^W2
/**
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* @param data #5{lOeN
*/ ! OVi\v
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private void insertSort(int[] data) { 4/x.qoj
int temp; wqE2n
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2fm6G).m
} ZTGsZ}{5
} Qc
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} %
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} ]VN1Y)
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归并排序: wxG*mOw
~ayU\4B
package org.rut.util.algorithm.support; s BuXwa
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import org.rut.util.algorithm.SortUtil; ~a>3,v-
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/** -zH-9N*c
* @author treeroot VM3)L>x]/
* @since 2006-2-2 *:chN' <
* @version 1.0 >u`Ci>tY
*/ _=qk.| p/
public class MergeSort implements SortUtil.Sort{ nzB!0U
{X\FS
/* (non-Javadoc) |z)7XK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O4W2X@
*/ XQ Si
public void sort(int[] data) { |L)qH"Eo
int[] temp=new int[data.length]; kgX"I ?>d
mergeSort(data,temp,0,data.length-1); 0M}Ql5+h,
} i8/"|+Z
x}7Xd P.2$
private void mergeSort(int[] data,int[] temp,int l,int r){ 0w$1Yx~C
int mid=(l+r)/2; ',Oc+jLR
if(l==r) return ; pAtxEaXh
mergeSort(data,temp,l,mid); %8"Aq
mergeSort(data,temp,mid+1,r); i?F~]8
for(int i=l;i<=r;i++){ y= 1(o3(
temp=data; ,ce$y4%(
} 7ws[Rp8
int i1=l; B/EGaYH
int i2=mid+1; {RH)&k&%
for(int cur=l;cur<=r;cur++){ ;sSRv9Xb
if(i1==mid+1) \D! I"mr
data[cur]=temp[i2++]; g+k
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else if(i2>r) Ys%d
data[cur]=temp[i1++]; x1`Jlzrp,
else if(temp[i1] data[cur]=temp[i1++]; Wc/B_F?2
else C:}"?tri
data[cur]=temp[i2++]; l'\m'Ioh
} $I3}%'`+
} }Do$oyAV$G
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} 4L2TsuLw
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改进后的归并排序: L3C'q
sGJZG
package org.rut.util.algorithm.support; )9rJ]D^B
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import org.rut.util.algorithm.SortUtil; Y#Pg*C8>8
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/** VSm{]Z!x
* @author treeroot GplEad
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* @since 2006-2-2 14Jkr)N
* @version 1.0 w5Yt mnP
*/ `HM?Fc58
public class ImprovedMergeSort implements SortUtil.Sort { -sk!XWW+
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private static final int THRESHOLD = 10; /.@"wAw:
TC._kAm
/* @yn1#E,
* (non-Javadoc) ;U<rFs40
* 5SHZRF(. 2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5q.)K
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*/ E"Y[k8-:2/
public void sort(int[] data) { Ivc/g,
int[] temp=new int[data.length]; sMWNzt
mergeSort(data,temp,0,data.length-1); )L7h:%h#
} h!]=)7x;
i}LVBx"K(
private void mergeSort(int[] data, int[] temp, int l, int r) { c0:`+>p2
int i, j, k;
m3 Rss~l
int mid = (l + r) / 2; D3;#:
if (l == r) DqBiBH[%h
return; mp>Ne6\Tu
if ((mid - l) >= THRESHOLD) ,A!0:+
mergeSort(data, temp, l, mid); 8}!WJ2[R
else 'di(5
insertSort(data, l, mid - l + 1); /.[78:G\,
if ((r - mid) > THRESHOLD) hW-?j&yJ?
mergeSort(data, temp, mid + 1, r); e:RgCDWL
else XRWy#Pj
insertSort(data, mid + 1, r - mid); agPTY{;
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for (i = l; i <= mid; i++) { 1ihdH1rg[
temp = data; [-JU(:Rh
} zM|Y
X<
for (j = 1; j <= r - mid; j++) { C.9l${QU
temp[r - j + 1] = data[j + mid]; ABnJ{$=n#
} %pImCpMR
int a = temp[l]; 6n$g73u<=3
int b = temp[r]; Z {*<Gx
for (i = l, j = r, k = l; k <= r; k++) { ?hnxc0~P
if (a < b) { V82N8-l
data[k] = temp[i++]; h2m@Q={
a = temp; xIa8Ac
} else { Z(a,$__
data[k] = temp[j--]; 3g5
n>8-
b = temp[j]; /X97dF)zt
} 59M\uVWR
} a}/ A]mu
} @ZGD'+zd?
uBfSS\SX|
/** mvt%3zCB!
* @param data v,A8Mk2s#
* @param l PFPZ]XI%F
* @param i J`d;I#R%c
*/ ._US8
private void insertSort(int[] data, int start, int len) { AqucP@
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ,ftKRq
} qO}Q4a+
} 9._owKj
} J'Y;j^
} !juh}q&}|
) i=.x+Q
堆排序: f#b;s<G
])NQzgS
package org.rut.util.algorithm.support; aLt2fB1 )
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import org.rut.util.algorithm.SortUtil; L/2,r*LNx$
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/** m>ApN@n
* @author treeroot gX!-s*{E
* @since 2006-2-2 \d}>@@U&
* @version 1.0 .h[yw$z6
*/ LF\HmKM,
public class HeapSort implements SortUtil.Sort{ TnQ"c)ta
|kh7F0';"
/* (non-Javadoc) nv/'C=+L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9B?-&t
*/ 4Bz:n
public void sort(int[] data) { ;30SnR/
MaxHeap h=new MaxHeap(); nb_$g@ 03
h.init(data); 6#(==}Sm+
for(int i=0;i h.remove(); V(3=j)#
System.arraycopy(h.queue,1,data,0,data.length); 'CA{>\F$F+
} 6-J%Z%yT #
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private static class MaxHeap{ 'Uu!K!
)4e?-?bK!
void init(int[] data){ AS'%Md&I
this.queue=new int[data.length+1]; Ws*UhJY<GS
for(int i=0;i queue[++size]=data; =a^}]k}
fixUp(size); :.aMhyh#*
} \2!1fN
} ;Bwg'ThT
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private int size=0; m< Y I}
Z]qbLxJV
private int[] queue; 5)iOG#8qJ
$*hqF1Q
public int get() { z1S
p'h$
return queue[1]; 6&`hf >
} hU6oWm
iR]K!j2
public void remove() { dpSNh1
SortUtil.swap(queue,1,size--); =bJ7!&
fixDown(1); k{ ~0BK
} TP{2q51yM
file://fixdown B"?ivxM:U
private void fixDown(int k) { #.j}:
int j; \45F;f_r6
while ((j = k << 1) <= size) { bYAtUEv
if (j < size %26amp;%26amp; queue[j] j++; .W
s\%S
if (queue[k]>queue[j]) file://不用交换 w;;9YFBdM
break; ,=V9?
SortUtil.swap(queue,j,k); <NXJ&xs-+
k = j; {ep(_1
} Oe
~g[I;
} xtO#reL"q?
private void fixUp(int k) { yc+pNC)ue_
while (k > 1) { ~sT1J|
int j = k >> 1; {2F@OfuCF
if (queue[j]>queue[k]) J"~!jrzBh(
break; YpI|=mv
SortUtil.swap(queue,j,k); 6|n3e,&A2
k = j; o2~P
vef
} Dl@Jj?zc
} `br$kB
U*4r<y9R
} sm"s2Ci=}
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} *}) W>
7!Qu+R
SortUtil: Z0%:j\W4c
4i7+'F
package org.rut.util.algorithm; 49.B!DqQW&
%X|u({(zb
import org.rut.util.algorithm.support.BubbleSort; 1]69S(
import org.rut.util.algorithm.support.HeapSort; Kf1NMin7
import org.rut.util.algorithm.support.ImprovedMergeSort; +\]Gu(z<
import org.rut.util.algorithm.support.ImprovedQuickSort; )M><09
import org.rut.util.algorithm.support.InsertSort; DS=$*
Trk
import org.rut.util.algorithm.support.MergeSort; `vZX"+BAh
import org.rut.util.algorithm.support.QuickSort; Y'C1L4d
import org.rut.util.algorithm.support.SelectionSort; =M=v;
,I-
import org.rut.util.algorithm.support.ShellSort; 8W Etm}
10_#Z~aU
/** 7-gT:
* @author treeroot s }Ql9
* @since 2006-2-2 y*%uGG5
* @version 1.0
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*/ e|N~tUVrrN
public class SortUtil { >L')0<!&
public final static int INSERT = 1; +pRNrg?k
public final static int BUBBLE = 2; EF6h>"']/
public final static int SELECTION = 3; Cxeam"-HTt
public final static int SHELL = 4; H*e +
2
public final static int QUICK = 5; +z4E:v
public final static int IMPROVED_QUICK = 6; &`oybm-p(
public final static int MERGE = 7; TV=K3F5)M
public final static int IMPROVED_MERGE = 8; .cm2L,1h
public final static int HEAP = 9; "VDMO^
(x
fN=Te,-
public static void sort(int[] data) { ``%yVVg}
sort(data, IMPROVED_QUICK); -9::M}^2
} |az2vD6P
private static String[] name={ Y_K W9T_
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" NSM7n=
*nh
}; @VPmr}p:{
u*/+cT
private static Sort[] impl=new Sort[]{ .5uqc.i"f
new InsertSort(), =*1NVi $n
new BubbleSort(), T*nP-b
new SelectionSort(), Z?xRSi2~7
new ShellSort(), T<-_#}.Hn
new QuickSort(), Ss%1{s~ok
new ImprovedQuickSort(), ~Up{zRD"B
new MergeSort(), 4(p`xdr}K
new ImprovedMergeSort(), s VHk;:e>x
new HeapSort() (zh[1[a
}; tva=DS
NBHpM}1xtU
public static String toString(int algorithm){ C~R
?iZ.&U
return name[algorithm-1]; f}J(nz>Sh
} ]f0OmUHR5i
1
+[sM
public static void sort(int[] data, int algorithm) { T7%!JBg@
impl[algorithm-1].sort(data); L$BV`JWPw
} J\P6
*MB>,HU
public static interface Sort { g(Q1d-L4e
public void sort(int[] data); z_N";Rn
} Q;J(
5;
zCuB+r=C
public static void swap(int[] data, int i, int j) { `CI_zc=jx
int temp = data; 2;u
i'B
data = data[j]; aydNSgu
data[j] = temp; ^H&U_
} >
K?OsvX
} [}]yJ+)