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。 ! ;>s .]
插入排序: -*7i:mg
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package org.rut.util.algorithm.support; azZtuDfv
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import org.rut.util.algorithm.SortUtil; tMw65Xei6b
/** Ue
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* @author treeroot A O5&Y.A#
* @since 2006-2-2 P;.roD9
* @version 1.0 4~Qnhv7
*/ w1I07 (
public class InsertSort implements SortUtil.Sort{ %%K3J<5
P%:?"t+J`;
/* (non-Javadoc) W(]A^C=/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 81EEYf
*/ S`vt\g$ dN
public void sort(int[] data) { I3 "6"
int temp; s'yR2JYv
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /k/X[/WO
} |fKT@2(
} {>
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} _]@u)$
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} F^/KD<cgK
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冒泡排序: Y-bTKSn
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package org.rut.util.algorithm.support; (W#CDw<ja
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import org.rut.util.algorithm.SortUtil; 'yVe&5?
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/** ^1~lnD~0
* @author treeroot r^6@Zwox]
* @since 2006-2-2 Xps
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* @version 1.0 gHc1_G]
*/ ]2l}[
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public class BubbleSort implements SortUtil.Sort{ @k{q[6c2n
)PvnB=wy
/* (non-Javadoc) R`]@.i4tt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) / fUdb=!Z
*/ Rd HCb k
public void sort(int[] data) { hiibPc?I
int temp; 4
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for(int i=0;i for(int j=data.length-1;j>i;j--){ c
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if(data[j] SortUtil.swap(data,j,j-1); sCw>J#@2>
} x %`YV):*
} va_u4
} qCI7)L`
} qpFxl
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} %\-E
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选择排序: iS)-25M'
i`e[Vwe2x@
package org.rut.util.algorithm.support; UapU:>!"`
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import org.rut.util.algorithm.SortUtil; ]B;`Jf
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/** CR23$<FC
* @author treeroot t O.5
* @since 2006-2-2 O>+=cg
* @version 1.0 p~3x=X4
*/ sgi5dQ
public class SelectionSort implements SortUtil.Sort { smfI+Z S"
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/* [u!n=ev
* (non-Javadoc) Cp/f18zO
* p%meuWV%5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $m#^0%
*/ .B<Bqr@?8
public void sort(int[] data) { l3p :}A
int temp; _b%)
for (int i = 0; i < data.length; i++) { /;(ji?wN
int lowIndex = i; uarfH]T{
for (int j = data.length - 1; j > i; j--) { So!=uYX
if (data[j] < data[lowIndex]) { TMMJ5\t2
lowIndex = j; ^D+^~>f
} k*)sz
} "g5{NjimY
SortUtil.swap(data,i,lowIndex); ':;k<(<-
} m=l'9j"D
} @~$"&B
2lsUCQI;
} jG7PT66>;
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Shell排序: :6lv X$
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package org.rut.util.algorithm.support; .+ u
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import org.rut.util.algorithm.SortUtil; :+Ukwno?/
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/** TC/c5:)]
* @author treeroot t([}a~1}
* @since 2006-2-2 B%;MGb o
* @version 1.0 Zw9;g+9
*/ 0uDDaFS
public class ShellSort implements SortUtil.Sort{ Ll|_Wd.K,
(|^m9v0:
/* (non-Javadoc) HGGq;Nbm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Gf\h7)T\
*/ S/5QK(XLC)
public void sort(int[] data) { *[]E5U
for(int i=data.length/2;i>2;i/=2){ p?Azn>qBa
for(int j=0;j insertSort(data,j,i); EB*sd S
} 2HFn\kjj.s
} u)0I$Tc"
insertSort(data,0,1); 7l69SQo]?
} TsTc3
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/** O6;"cUv
* @param data tVn?cS
* @param j q;'f3Y
* @param i kMQ
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*/ 5YD~l(,S1]
private void insertSort(int[] data, int start, int inc) { v(2N@s<%
int temp; E]`7_dG+T
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); p:4jY|q
} O_:l;D#i
} X 0y$xC|<
} sW[-qPK<
B3#G
} 4KH492Nq9
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快速排序: WkTJ M
Rg?6e N
package org.rut.util.algorithm.support; )dT@0Ys%
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import org.rut.util.algorithm.SortUtil; %T/@/,7h
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/** ]Ox5F@
* @author treeroot eTuqK23
* @since 2006-2-2 s*izhjjX
* @version 1.0 t2N W$
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*/ js_`L#t
public class QuickSort implements SortUtil.Sort{ V%s
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/* (non-Javadoc) @5%&wC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?5C'9 V
*/ rJ!cma
public void sort(int[] data) { JVE\{ e)
quickSort(data,0,data.length-1); " 9Gn/-V>
} %**f`L%jN
private void quickSort(int[] data,int i,int j){ *T5;dh (
int pivotIndex=(i+j)/2; =S&`~+
file://swap Y2H-D{a27
SortUtil.swap(data,pivotIndex,j); QU).q65p
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int k=partition(data,i-1,j,data[j]); 3A7774n=P
SortUtil.swap(data,k,j); lE:g A,
if((k-i)>1) quickSort(data,i,k-1); aB]0?C y9(
if((j-k)>1) quickSort(data,k+1,j); b9.M'P\
</h^%mnd
} ^J'_CA
/** (f# (B2j
* @param data + ?1GscJ
* @param i f[ ^f/jGm
* @param j 1\.$=N
* @return ;a:H-iC
*/ y>^a~}Zq
private int partition(int[] data, int l, int r,int pivot) { 0I&k_7_
do{ V2MOD{Maat
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); NTg@UT<
SortUtil.swap(data,l,r); ($[wCHU`!
} -fR:W{u
while(l SortUtil.swap(data,l,r); Wa_qD
return l; ._mep\#.:
} qNp1<QO0
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} 'D\Q$q
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改进后的快速排序: *b~6 B M$
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package org.rut.util.algorithm.support; qUe
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import org.rut.util.algorithm.SortUtil; .L'w/"O
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/** Q?{%c[s
* @author treeroot =YO ]m<
* @since 2006-2-2 jmok]-pC
* @version 1.0 *GP2>oEM
*/ o5<<vvdA
public class ImprovedQuickSort implements SortUtil.Sort { nla6QlFYn*
Z:;}
private static int MAX_STACK_SIZE=4096; R%E7 |NAG
private static int THRESHOLD=10; taQE
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/* (non-Javadoc) 0c_xPBbB+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s}D>.9
*/ @[$_cGR7
public void sort(int[] data) { D28`?B9(
int[] stack=new int[MAX_STACK_SIZE]; Ic&h8vSU
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int top=-1; G)3I+uxn
int pivot; xo:kT )
int pivotIndex,l,r; 6|TSH$w_
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stack[++top]=0; 3Ob.OwA
stack[++top]=data.length-1; 9g9 2eKS
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while(top>0){ L9x-90'q,
int j=stack[top--]; n,la<N]
int i=stack[top--]; 0lw>mxN
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pivotIndex=(i+j)/2; Onmmcem
pivot=data[pivotIndex]; V\V
/2u5-
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SortUtil.swap(data,pivotIndex,j); >1y6DC
1Pf(.&/9_
file://partition en<mm#Ab
l=i-1; v=`yfCX-qX
r=j; 8:cbr/F<
do{ 5&Oc`5QD
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); rk=D5E7
SortUtil.swap(data,l,r); :t?B)
} sFU< PgV
while(l SortUtil.swap(data,l,r); [^H2'&]
SortUtil.swap(data,l,j); F_-Lu]*
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if((l-i)>THRESHOLD){ ul{x|R
stack[++top]=i; Ts iJK
stack[++top]=l-1; qHtQ4_Zn;
} _=v#"l
if((j-l)>THRESHOLD){ OG\i?N
stack[++top]=l+1; Aq i:h]x
stack[++top]=j; ~ELY$G.xl
} PK*Wu<<
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} ?W/.'_
file://new InsertSort().sort(data); dj gk7
insertSort(data); !\4x{Wa]
} g` rr3jP
/** p8Vqy-:
* @param data 'K[ml ?_
*/ <'y<8gpM
private void insertSort(int[] data) { 24sMX7Q,i
int temp; ]>3Y~KH(
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); blc?[ [,!
} U?[ (
} <'Q6\R}:vC
} Xfiwblg
x6ghO-s
} }1a}pm2p
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归并排序: <z Gh}.6v
Koa9W>!
package org.rut.util.algorithm.support; L*z=!Dpo
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import org.rut.util.algorithm.SortUtil; *&U~Io"U
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/** '/Aq2
* @author treeroot Rv1W &s&
* @since 2006-2-2 E@}F^0c
* @version 1.0 c3]t"TA,
*/ '%$Vmf)=
public class MergeSort implements SortUtil.Sort{ osC?2.
8ud12^s$
/* (non-Javadoc) {3Inj8a=?A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :!gNOR6Lh
*/ B,b8\\^k|
public void sort(int[] data) { >$Y/B=e
int[] temp=new int[data.length]; I~,.@{4
mergeSort(data,temp,0,data.length-1); 8SRR)O[)}
} 41
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private void mergeSort(int[] data,int[] temp,int l,int r){ qxZIH
int mid=(l+r)/2; fit{n]g
if(l==r) return ; K EAXDF
mergeSort(data,temp,l,mid); $8^Hkxy
mergeSort(data,temp,mid+1,r); 9A|A@E#
for(int i=l;i<=r;i++){ EQ%o oAb8
temp=data; 8Vu@awz{L
} Dfs^W{YA
int i1=l; *85N_+Wv!
int i2=mid+1; ^PG"
for(int cur=l;cur<=r;cur++){ -()WTdIy
if(i1==mid+1) +pd,gG?dW
data[cur]=temp[i2++]; >$q
else if(i2>r) &V4Zmn?UU
data[cur]=temp[i1++]; =D<0&M9C
else if(temp[i1] data[cur]=temp[i1++]; %;`Kd}CO
else ljFq ;!I5
data[cur]=temp[i2++]; y3~=8!Tj?Q
} 5c- P lm%
} b.*LmSX#
rPH7
]]
} Ejug2q
*g5bdQ:Av~
改进后的归并排序: ?Y"%BS+pt
H cmW
package org.rut.util.algorithm.support; <rC%$tr
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import org.rut.util.algorithm.SortUtil; D
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/** zx@!8Z
* @author treeroot Ow0>qzTg
* @since 2006-2-2 ~J\qkQ
* @version 1.0 EP:`l
*/ gP_N|LuF"
public class ImprovedMergeSort implements SortUtil.Sort { <4rnOQ:
}`=7%b`-?
private static final int THRESHOLD = 10; ZRMim6a4X
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/* l7`{ O/hN
* (non-Javadoc) HT<p=o'$Z
* wFMH\a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !}Xoqamm
*/ j!+jLm!l
public void sort(int[] data) { 8D.c."q
int[] temp=new int[data.length]; TV{GHB!p"
mergeSort(data,temp,0,data.length-1); rLTBBvV
} ?G `m;S
]_C"A
private void mergeSort(int[] data, int[] temp, int l, int r) { RV~t%Sw^
int i, j, k; ni;)6,i
int mid = (l + r) / 2; i1evB9FZ1z
if (l == r) fcq8aW/z_
return; ky2]%cw
if ((mid - l) >= THRESHOLD) zPnb_[YF
mergeSort(data, temp, l, mid); j]Gn\QF
else b<FE
insertSort(data, l, mid - l + 1); gC}}8( k
if ((r - mid) > THRESHOLD) E{
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b)
mergeSort(data, temp, mid + 1, r); suE K;Bk9
else >zJHvb)b\
insertSort(data, mid + 1, r - mid); luP;P&
IiE6i43
for (i = l; i <= mid; i++) { W.3b]zcV
temp = data; Kx9u|fp5
} @i#JlZM_
for (j = 1; j <= r - mid; j++) { `r$7Cc$C
temp[r - j + 1] = data[j + mid]; 8 a]'G)(ts
} C0N
:z.)4
int a = temp[l]; C1^%!)
int b = temp[r]; q>_<\|?%x
for (i = l, j = r, k = l; k <= r; k++) { dWz?`B{'
if (a < b) { O9daeIF0#
data[k] = temp[i++]; m>=DJ{KQ
a = temp; ^ ]9K>}
} else { [IAUJ09>I
data[k] = temp[j--]; $0$sM/ %
b = temp[j]; MpOU>\
} [9
MH"\
} t:2DB)
} K]|Ud No
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/** t7by OMC
* @param data i q`}c
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* @param l &tH?m;V
* @param i nI6gd%C
*/ xM%4/QE+
private void insertSort(int[] data, int start, int len) { )Qb,zS6
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); i"&FW&W
} |Gic79b
} R;DU68R
} =}Tm8b0
} r
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4&W?:=H2
堆排序: #Hrzk!&9
m!7%5=Fc
package org.rut.util.algorithm.support; ?xR7Ii3
811>dVq3/
import org.rut.util.algorithm.SortUtil; >!Yuef
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/** K/W=r
* @author treeroot EHUx~Q
* @since 2006-2-2 t"$~o:U&)
* @version 1.0 ?=&; A
*/ e!5} #6Kd
public class HeapSort implements SortUtil.Sort{ -;9
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IV,4BQ$
/* (non-Javadoc) n^nE&'[?0g
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n#+EG3
*/ N,TV?Q5l7
public void sort(int[] data) { CyIlv0fd}
MaxHeap h=new MaxHeap(); BAQ-1kSz
h.init(data); D|q~n)TW5
for(int i=0;i h.remove();
7IxeSxXH
System.arraycopy(h.queue,1,data,0,data.length); z>N[veX%
} 6\8d6x>
ZPZh6^cc
private static class MaxHeap{ aDdxR:
'?C6P5fm
void init(int[] data){ 6nTM~]5.
this.queue=new int[data.length+1]; e(7#>O%1
for(int i=0;i queue[++size]=data; vK!`#W`X
fixUp(size); E !!,JnU
} =muQ7l:(
} -$8ew+
E`TZ:W]r,
private int size=0; -m@c{&r
yV.p=8:
private int[] queue; Dck/Ea
L3{(Bu
public int get() { :9QU\{2
return queue[1]; .HZ d.*
} gBqDx|G
[e><^R*u
public void remove() { jZ.yt+9
SortUtil.swap(queue,1,size--); LhO\a
fixDown(1); 3%*igpj\)
} S#]]h/
file://fixdown *aCL/:
private void fixDown(int k) { yX!fj\R
int j; FQ>$Ps*a[
while ((j = k << 1) <= size) { k3bQ32()
if (j < size %26amp;%26amp; queue[j] j++; Q:q0C
+T
if (queue[k]>queue[j]) file://不用交换 {N~mDUoJ|
break; ndD>Oc}"3
SortUtil.swap(queue,j,k); .,u>WIUxj
k = j; [~N;d9H+*1
} cb_C2+%8NA
} GDLi?3q
private void fixUp(int k) { <)ZQRE@
while (k > 1) { ^t'mW;C$4
int j = k >> 1; QYbB\Y
if (queue[j]>queue[k]) {L;sF=d
break; O}"oz3H
SortUtil.swap(queue,j,k); 3A,N1OXG
k = j; [ K?
} Ii+3yE@c
} *}vvS^ c0
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} ;
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} \kQ)fk]^
OH@"]Nc~
SortUtil: :lai0>
D
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package org.rut.util.algorithm; =G}a%)?As\
1NP
import org.rut.util.algorithm.support.BubbleSort; e]1=&:eX#d
import org.rut.util.algorithm.support.HeapSort; ~m=GS[=
import org.rut.util.algorithm.support.ImprovedMergeSort; NAo.79
import org.rut.util.algorithm.support.ImprovedQuickSort; GXZ="3W |
import org.rut.util.algorithm.support.InsertSort; ;"&?Okz
import org.rut.util.algorithm.support.MergeSort; wKpGJ&
{
import org.rut.util.algorithm.support.QuickSort; Kyh6QA^
import org.rut.util.algorithm.support.SelectionSort; k5< n:dS
import org.rut.util.algorithm.support.ShellSort; k*A(7qQA`4
r $S9/
/** %R$)bGT
* @author treeroot FJ84'T\~
* @since 2006-2-2 h.tj8O1
* @version 1.0 <qR$ `mLN
*/ hp)>Nzdx
public class SortUtil { 6 :4GI
public final static int INSERT = 1; wwl,F=| Y
public final static int BUBBLE = 2; )FwOg;=3M"
public final static int SELECTION = 3; St?mq* ,
public final static int SHELL = 4; `)a|Q
public final static int QUICK = 5; 4>(K~v5;N
public final static int IMPROVED_QUICK = 6; Kvg=7o
public final static int MERGE = 7; KJFQ)#SW!
public final static int IMPROVED_MERGE = 8; !po,Z&
public final static int HEAP = 9; ),{3LIr
ai;!Q%B#Q
public static void sort(int[] data) { W^elzN(
sort(data, IMPROVED_QUICK); p+P@I7V
} P{dR
pH|
private static String[] name={ :fmV||Q
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 9-n]_AF`0
}; v
Z10Rb8
NATi)A"TZ
private static Sort[] impl=new Sort[]{ o2(w
new InsertSort(), |6NvByc,
new BubbleSort(), ( &m1*
new SelectionSort(), 9y\nO)\Tv
new ShellSort(), X)SUFhP\
new QuickSort(), 87[o^) 8
new ImprovedQuickSort(), %enJ[a%Qg
new MergeSort(), n^QDMyC;I
new ImprovedMergeSort(), q"Bd-?9
new HeapSort() 08:K9zr
}; PE7V1U#$o,
=x w:@(]{
public static String toString(int algorithm){ g{DOQA
return name[algorithm-1]; [vtDtwL
} #~j $J
>]}VD "\
public static void sort(int[] data, int algorithm) { 2^s@n3t
impl[algorithm-1].sort(data); NZ`6iK-V_
} \nOV2(FAT
W{IP}mM
public static interface Sort { kk126?V]_
public void sort(int[] data); IF>v
-Z
} 0D:uM$
i]
'
Sd&I:?
public static void swap(int[] data, int i, int j) { WL%T nux
int temp = data; .~'q
yD2V
data = data[j]; .aZB?MW
data[j] = temp; *RkvM?o@jC
} ~i^,Z&X:
} #O^zA`D