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。 kl3S~gE4@
插入排序: 0B$7S,2
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package org.rut.util.algorithm.support; _?]BVw
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import org.rut.util.algorithm.SortUtil; l88a#zUQDN
/** &c<}++'h
* @author treeroot @FdCbPl$
* @since 2006-2-2 JfP\7
* @version 1.0 @+\S!o3m
*/ 8} ?Y;>s\
public class InsertSort implements SortUtil.Sort{ 4lh
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/* (non-Javadoc) NzeI/f3K5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y:"v=EhB
*/ ]D) 'I`
public void sort(int[] data) { m!#)JFe67
int temp; Ij6Wz.*
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _]D#)-uv}C
} ;4/dk_~p]
} D"x$^6`c}
} F@K*T2uh
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} ,JQxs7@2k
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冒泡排序: igj={==m
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package org.rut.util.algorithm.support; Q{l*62Bx
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import org.rut.util.algorithm.SortUtil; D _bkUR1
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/** #[U9(44,
* @author treeroot >\?z37:T
* @since 2006-2-2 Yf!*OGF
* @version 1.0 eb.cq"C
*/ @( n^S?(
public class BubbleSort implements SortUtil.Sort{ 16[-3cJ T
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/* (non-Javadoc) jqX@&}3@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >Z2,^5P{
*/ Rgfc29(8
public void sort(int[] data) { pe!dm}!h[
int temp; x'M^4{4[
for(int i=0;i for(int j=data.length-1;j>i;j--){ I>kiah*
if(data[j] SortUtil.swap(data,j,j-1); ra9cD"/J &
} =##s;zj(%
} i (%tHa37
} gaw4NZd)0
} hLyTUt~\L
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} Q9yGQu
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选择排序: Xb<DpBrk
I NPYJ#%
package org.rut.util.algorithm.support; ^)hAVf~E
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import org.rut.util.algorithm.SortUtil; #j^('K|
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/** Wiq{wxe
* @author treeroot 0j{F^rph
* @since 2006-2-2
joChML_
* @version 1.0 XJ:>UNf5;
*/ q4Oxs
public class SelectionSort implements SortUtil.Sort { 7ZV~op2Q
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/* 42V,PH6o
* (non-Javadoc) 83
i1
* Z@uTkqG)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %qS]NC
*/ bSrRsgKvT
public void sort(int[] data) { B=Zl&1
int temp; lJ:M^.Em0
for (int i = 0; i < data.length; i++) { d`9W
int lowIndex = i; pwFU2}I
for (int j = data.length - 1; j > i; j--) { FpdDIa
if (data[j] < data[lowIndex]) { ]3O
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lowIndex = j; Wa[x`:cT?u
} e~+(7_2
} f=:3! k,S
SortUtil.swap(data,i,lowIndex); wovmy{K
} B]^>GH
} T|o`a+?
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} 4#^'lKIx
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Shell排序: O;X(pE/G
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package org.rut.util.algorithm.support; Qy=HrL]x
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import org.rut.util.algorithm.SortUtil; lX98"}
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/** Dd!Sr8L[
* @author treeroot ex`
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* @since 2006-2-2 *'9)H0
* @version 1.0 gEr4zae
*/ :vc[/<
public class ShellSort implements SortUtil.Sort{ >aEL;V=}P
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/* (non-Javadoc) dSOlD/c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Fw_
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*/ KqM! !
public void sort(int[] data) { May&@x/oMS
for(int i=data.length/2;i>2;i/=2){ ^Yj"RM$;N
for(int j=0;j insertSort(data,j,i); Q'Jv}'eK_
} Ni2]6U
} 9z5"y|$
insertSort(data,0,1); ,c4c@|Bh?
} "El^38Ho
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/** .UM<a
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* @param data pOqGAD{D$
* @param j .MDYGWKt
* @param i nE/=:{~Ws
*/ uy/y wm/?=
private void insertSort(int[] data, int start, int inc) { .A3DFm3 t
int temp; gw_|C|!P
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); p=!#],[
} `9.dgV
} aB6Ye/Io
} 1<xcMn0et
KxO/]
} )46
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快速排序: 0o=!j3RjH
cu[!D}tVU
package org.rut.util.algorithm.support; 5^)?mA
# v.L$7O
import org.rut.util.algorithm.SortUtil; \'n$&PFe
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/** u-m %=2
* @author treeroot Q`H#
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* @since 2006-2-2 QJx9I_
* @version 1.0 Da"yZ\4
*/ {mNdL J
public class QuickSort implements SortUtil.Sort{ "XCU'_k=
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/* (non-Javadoc) rmOQ{2}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h^}_YaT\
*/ l iw,O 6
public void sort(int[] data) { Pj'62[5z
quickSort(data,0,data.length-1); 's)fO#
} +'-rTi\
private void quickSort(int[] data,int i,int j){ bfFmTI$,
int pivotIndex=(i+j)/2; 31WZJm^
file://swap $Axng
J c
SortUtil.swap(data,pivotIndex,j); <5dH *K
x+4vss
int k=partition(data,i-1,j,data[j]); iJ}2"i7M
SortUtil.swap(data,k,j); m&Lt6_vi
if((k-i)>1) quickSort(data,i,k-1); Z.!g9fi8>
if((j-k)>1) quickSort(data,k+1,j); egfi;8]E
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} ya:sW5fk
/** f%c06Un=
* @param data f2NA=%\
* @param i p~h4\.*`
* @param j t) LU\!
* @return Q/p(#/y#b
*/ IWQ&6SDW$z
private int partition(int[] data, int l, int r,int pivot) { Bb~5& @M|N
do{ d+tj%7
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 0f1H8zV
SortUtil.swap(data,l,r); P*0f~eu
} `%|u!
while(l SortUtil.swap(data,l,r); *xPB<v2N:P
return l; ugno]5Ni
} ;v_ls)_,-
*/nuv
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} dgXg kB'
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改进后的快速排序: I-,>DLG
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package org.rut.util.algorithm.support; z
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import org.rut.util.algorithm.SortUtil; h6g:(3t6m
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/** !}ilN 1>
* @author treeroot {gsW(T>)
* @since 2006-2-2 3!aEClRtq
* @version 1.0 ?9p$XG
*/ D ZVXz|g
public class ImprovedQuickSort implements SortUtil.Sort { 3)Zu[c[%'J
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private static int MAX_STACK_SIZE=4096; ZW>o5x__b
private static int THRESHOLD=10; 4Q;<Q"
/* (non-Javadoc) Lx%:t YZ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HcA[QBh
*/ [<yz)<<
public void sort(int[] data) { PB+\jj
int[] stack=new int[MAX_STACK_SIZE]; 5C B%=iL{
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int top=-1; Hq?& Qo
int pivot; yxvjg\!&
int pivotIndex,l,r; PcB{=L
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stack[++top]=0; DcN"=Y
stack[++top]=data.length-1; 'j }g
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while(top>0){ -,^WaB7u\
int j=stack[top--]; uoHqL IpQ
int i=stack[top--]; .U 39nd
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pivotIndex=(i+j)/2; as(*B-_n~
pivot=data[pivotIndex]; >b>gr OX
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SortUtil.swap(data,pivotIndex,j); P{cos&X|
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file://partition zks#EzQ
l=i-1; ;,rnk-
r=j; d@ZoV
do{ /ERNS/w
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Zi/-~')E
SortUtil.swap(data,l,r); 6 Uw;C84!
} NI8~QeGah
while(l SortUtil.swap(data,l,r); iS
SortUtil.swap(data,l,j); Ihg~Q4t
VHW`NP 5Jl
if((l-i)>THRESHOLD){ ,E?4f
@|X
stack[++top]=i; "Hht
g:
stack[++top]=l-1; 9 ZGV%Tw
} aM$=|%9/
if((j-l)>THRESHOLD){ wWTQ6~Y%d
stack[++top]=l+1; '0RRFO
stack[++top]=j; Ff<)4`J
} B'p5M.6d#:
b66R}=P l
} [/OQyb4F<
file://new InsertSort().sort(data); ,]7XMU3
insertSort(data); &2{]hRM
} c|lU(Tf
/** #W|!fILL
* @param data q`^3ov^</
*/ WYLX?x
private void insertSort(int[] data) { >)^NJ2Fd
int temp; <Y>3
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,eXFN?CB
} (@q3^)I4
} )[jy[[K(
} g/#~N~&
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} ~KRnr0
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归并排序: ,dcg?48
)b92yP{
package org.rut.util.algorithm.support; BI.V0@qZ
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import org.rut.util.algorithm.SortUtil; y9!:^kDI
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/** sJ~P:g
* @author treeroot uNbIX:L,
* @since 2006-2-2 {y6C0A*
* @version 1.0 5
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*/ t77'fm
public class MergeSort implements SortUtil.Sort{ Ea]T>4
=/9<(Tt%m
/* (non-Javadoc) @.ZL7$|d
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) io2@}xZF
*/ oy5+}`
public void sort(int[] data) { L/x(RCD
int[] temp=new int[data.length]; Cs4hgb|
mergeSort(data,temp,0,data.length-1); h0Jl_f#Y
} lw[<STpD;
([KN*OF
private void mergeSort(int[] data,int[] temp,int l,int r){ XG&K32_fs
int mid=(l+r)/2; X NE+(Bt
if(l==r) return ; }0;Sk(B>
mergeSort(data,temp,l,mid); C[8Kl D
mergeSort(data,temp,mid+1,r); \Y e%o}.{
for(int i=l;i<=r;i++){ 1lcnRHO
temp=data; lKWr=k~
} a,n93-m(m
int i1=l; k[9A,N^lZB
int i2=mid+1; x=Mm6}/
for(int cur=l;cur<=r;cur++){ s;1e0n
if(i1==mid+1) z0Xa_w=
data[cur]=temp[i2++]; m*oc)x7'
else if(i2>r) rzu
s
data[cur]=temp[i1++]; G),db%,X2
else if(temp[i1] data[cur]=temp[i1++]; Yy
h=G
else [Oy >R
data[cur]=temp[i2++]; FT.@1/ )
} Y<Q\d[3^F
} qq;b~ 3kW
zvr\36
} yX!#a>d"H
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改进后的归并排序: Rla4L`X;
kcS6 _l
package org.rut.util.algorithm.support; v!trsjb
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import org.rut.util.algorithm.SortUtil; +< KNY
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/** &fSTR-8ev#
* @author treeroot xl2g0?
* @since 2006-2-2 LgHJo-+>
* @version 1.0 d(S}NH
*/ 10MU-h.)
public class ImprovedMergeSort implements SortUtil.Sort { \hbiU]
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private static final int THRESHOLD = 10; tcA;#^jc
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/* ^~l $&~
* (non-Javadoc) }-p,iTm
* 2-v\3voN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @^?XaU
*/ YwAnqAg
public void sort(int[] data) { kon=il<@
int[] temp=new int[data.length]; Ei~f`{i
mergeSort(data,temp,0,data.length-1); QlD6i-a
} ~lw<799F6
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private void mergeSort(int[] data, int[] temp, int l, int r) { 5@P-g
int i, j, k; @ Nb%L&=P8
int mid = (l + r) / 2; s'L?;:)dyB
if (l == r) 'm O2t~n
return; LC-)'Z9}5
if ((mid - l) >= THRESHOLD) Y {c5
mergeSort(data, temp, l, mid); <xn;bp[
else A1A3~9HuK
insertSort(data, l, mid - l + 1); 5f{|"LG&
if ((r - mid) > THRESHOLD) 8Rxc&`_X
mergeSort(data, temp, mid + 1, r); #J$qa Ul
else M !{'ED
insertSort(data, mid + 1, r - mid); VJ{pN ~_1
SI*^f\lu
for (i = l; i <= mid; i++) { <y>:B}9'
temp = data; )i!^]| $
} V8"Wpl9Cz
for (j = 1; j <= r - mid; j++) { %j{.0H
temp[r - j + 1] = data[j + mid]; :'*DMW~
} EXpSh}
int a = temp[l]; *^h_z;{,
int b = temp[r]; cwynd=^nC
for (i = l, j = r, k = l; k <= r; k++) { %EI<@Ps8c
if (a < b) { DU{bonR`
data[k] = temp[i++]; @
yxt($G
a = temp; xjq0D[
} else { Vz w PBQ -
data[k] = temp[j--]; @2' %o<lF
b = temp[j];
(ZPXdr
} 7ZFJexN]
} o4)hxs
} TnE+[.Qu
/F~X,lm*~
/** +R[4\ hC0Y
* @param data
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* @param l ("Dv>&w9
* @param i ZBc|438[
*/ 8D~x\!(p\
private void insertSort(int[] data, int start, int len) { rt b* n~
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); k
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kj
} @]'SeiNp
} g%\L&}Jd
} +Me2U9
} (@&I_>2Q
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堆排序: 40K2uT{cq
<NB41/
package org.rut.util.algorithm.support; (0jr;jv
#":a6%0Q
import org.rut.util.algorithm.SortUtil; zvf3b!}
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/** \&q=@rJp(z
* @author treeroot .3wY\W8Dr-
* @since 2006-2-2 o3h -=t
* @version 1.0 kx{!b3"
*/ q)iTn)Z!
public class HeapSort implements SortUtil.Sort{ X?dfcS*!n
' G#SLqZy
/* (non-Javadoc) E
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F?4Sz#
*/ ')o0O9/;
public void sort(int[] data) { xP@/9SM
MaxHeap h=new MaxHeap(); r
nBOj#N
h.init(data); }uQ${]&D
for(int i=0;i h.remove(); Do;#NLrWb
System.arraycopy(h.queue,1,data,0,data.length); =nhzMU9c\y
} *Bw #c
j
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private static class MaxHeap{ jA`a/vWu
M|%c(K#E,3
void init(int[] data){ |.w;r
this.queue=new int[data.length+1]; arj$dAW
for(int i=0;i queue[++size]=data; Q}P-$X+/ n
fixUp(size); j Z'&0x"U
} - L~Uu^o
} ;CmOsA,1
!N~*EI$
private int size=0; nem@sB;v#
frH)_ YJ%
private int[] queue; xzikD,FV
wk ikD
public int get() { <t}? $1
return queue[1]; ]Oso#GYD
} >saI+u'o
GS%b=kc
public void remove() { dVGbe07
SortUtil.swap(queue,1,size--); #nEL~&
fixDown(1); \A(5;ZnuD
} 3k{ @.V?]
file://fixdown .#!mDlY;
private void fixDown(int k) { ,-
HIFbXx@
int j; Yx1 D)
while ((j = k << 1) <= size) { RvW.@#EH0
if (j < size %26amp;%26amp; queue[j] j++; aZgNPw
if (queue[k]>queue[j]) file://不用交换 )w"0w(
break; y Nva1I
SortUtil.swap(queue,j,k); (hf zM+2
k = j; AMTslo
} h5-d;RKE
} \cZfg%PN
private void fixUp(int k) { 8p=>?wG
while (k > 1) { f z%tA39m
int j = k >> 1; 3qo e^e
if (queue[j]>queue[k]) {A3m+_8
break; F]5\YYXO
SortUtil.swap(queue,j,k); Jsn <,4DO8
k = j; ]kS7n@8
} RWikJ
} `d*b]2
,!>fmU`E4
} a:u}d7T3e
]u=Ca#!'
} H8i+'5x,?
AZwa4n}"
SortUtil: ZQ[~*)
g1qi\axm
package org.rut.util.algorithm; 8]C1K
Zs
Yy@g9mi
import org.rut.util.algorithm.support.BubbleSort; `Zf9$K|
import org.rut.util.algorithm.support.HeapSort; &@; RI~
import org.rut.util.algorithm.support.ImprovedMergeSort; BXA]9eK
import org.rut.util.algorithm.support.ImprovedQuickSort; _?b;0{93u
import org.rut.util.algorithm.support.InsertSort; $4Y&j}R
import org.rut.util.algorithm.support.MergeSort; l* Y[^'
import org.rut.util.algorithm.support.QuickSort; |<Bpv{]P
import org.rut.util.algorithm.support.SelectionSort; -S$$/sR
import org.rut.util.algorithm.support.ShellSort; ,}<RrUfD
76cEKHa<
/** -+P7:4/
* @author treeroot .)`-Hkxa
* @since 2006-2-2 F< |c4
* @version 1.0 *?N<S$m
*/ <E}N=J'uJ
public class SortUtil { )ddsyFGW
public final static int INSERT = 1; P6we(I`"2
public final static int BUBBLE = 2; +*a7GttU
public final static int SELECTION = 3; IJIQ"
s
public final static int SHELL = 4; o? dR\cxj
public final static int QUICK = 5; la702)N{
public final static int IMPROVED_QUICK = 6; PP-kz;|
public final static int MERGE = 7; xt))]aH
public final static int IMPROVED_MERGE = 8; kY!C_kFcn
public final static int HEAP = 9; i4VK{G~g"
$e1:Q#den2
public static void sort(int[] data) { V6+Zh>'S
sort(data, IMPROVED_QUICK); w_H2gaQ
} 3{pk5_c
private static String[] name={ x@Vt[}e
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" (UcFNeo
}; tgW kX
/e<5Np\X
private static Sort[] impl=new Sort[]{ 0||F`24
new InsertSort(), b,Lw7MY}[
new BubbleSort(), kW(Kh0x
new SelectionSort(), A'~#9@l<
new ShellSort(), kaO{#i2-
new QuickSort(), yoW>
BX
new ImprovedQuickSort(), 5)*6V&
new MergeSort(), -fPT}v
new ImprovedMergeSort(), e
Y DUon
new HeapSort() -yA3 RP
}; M[z3 f
xgs@gw7!n0
public static String toString(int algorithm){ yjd(UWE
return name[algorithm-1]; Y Z\@)D;
} 0etwz3NuW
nNs .,J)
public static void sort(int[] data, int algorithm) { [`9^QEj
impl[algorithm-1].sort(data); *;X-\6
} `sxN!Jj?
pz @km
public static interface Sort { 1M/$<
kQ-N
public void sort(int[] data); tQ[]Rc
} X~zRZ0
x~Cz?ljbn
public static void swap(int[] data, int i, int j) { Um'Ro 4
int temp = data; q_pmwJ:UL
data = data[j]; 0Jg+sUs{
data[j] = temp; .FJj
} !l"tI#?6W%
} f?5A"-NS