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。 BB9eQ:
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插入排序: Vr"'O6
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package org.rut.util.algorithm.support; \ZhkOl
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import org.rut.util.algorithm.SortUtil; )c1Pj#|
/**
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* @author treeroot $7xfLS8Vo
* @since 2006-2-2 W> Pcj EI
* @version 1.0 C~K/yLCAi
*/ xiQc\k$
public class InsertSort implements SortUtil.Sort{ vl}}h%BC
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/* (non-Javadoc) UUtSme
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vO"E4s
*/ =>Z4vWX*
public void sort(int[] data) { t1oTZ
int temp; !Q%r4Nr
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); k%sA+=
} \k6OP
} p<Tg}fg
} [xGL0Z%)t
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} qT4`3nH:
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冒泡排序: EL2z&
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package org.rut.util.algorithm.support; "
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import org.rut.util.algorithm.SortUtil; K&dc< 4DC
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/** :,/
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* @author treeroot KO}TCa
* @since 2006-2-2 *l0i}"T^_
* @version 1.0 GIR12%-EO
*/ 1OqVNp%K
public class BubbleSort implements SortUtil.Sort{ f_hG2Sk
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/* (non-Javadoc) *_Pkb.3R
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jlUT9Zp
*/ s <$*A;t
public void sort(int[] data) { qe0ZM-C_
int temp; '=(yh{W
for(int i=0;i for(int j=data.length-1;j>i;j--){ )D]LPCd[
if(data[j] SortUtil.swap(data,j,j-1); T0\[":
A
} #\z"k<{*
} [E}pU8.t6
} Nk F2'Z{$+
} 1'k,P;s
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} ::/vDUDc
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选择排序: x^pHP|<3`
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package org.rut.util.algorithm.support; j2n
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import org.rut.util.algorithm.SortUtil;
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/** 2qKAO/_O
* @author treeroot G#'G9/Tm
* @since 2006-2-2 *vzj(HGO
* @version 1.0 k.H4Mf(4
*/ lstnxi%x
public class SelectionSort implements SortUtil.Sort { LQ"xm
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/* m W4tW
* (non-Javadoc) 6~8dMy;w
* k~$}&O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M:K4o%
*/ DJR r
public void sort(int[] data) { B :1r;8{j
int temp; \&Oc}]
for (int i = 0; i < data.length; i++) { ]#$rTWMl'
int lowIndex = i; 0Jm)2@
for (int j = data.length - 1; j > i; j--) { "LVN:|!
if (data[j] < data[lowIndex]) { +n<;);h
lowIndex = j; 45Q#6BtE
} 2|8$@*-\
} kjR-p=}
SortUtil.swap(data,i,lowIndex); _qS4Ns/4s
} .OF2O}
} uF-Rl##
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} ,aSK L1
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Shell排序: V"sm+0J
5U JMiwP{
package org.rut.util.algorithm.support; k=5v
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import org.rut.util.algorithm.SortUtil; +r__>V,
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/** |DoD.?v
* @author treeroot ,#80`&\%
* @since 2006-2-2 _,|N`BBqd
* @version 1.0 a[V4EX1E
*/ 6
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public class ShellSort implements SortUtil.Sort{ LGC3"z\=
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/* (non-Javadoc) ot,e?lF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f1/if:~6
*/ At8^yF
public void sort(int[] data) { 6b=7{nLF
for(int i=data.length/2;i>2;i/=2){ >zcp(M98
for(int j=0;j insertSort(data,j,i); ,6^V)F
} ]4-t*Em
} ~2U5Wt
insertSort(data,0,1); )%(H'omvl
} TZ@S?r>^
Tn\59 (
/** @>hXh
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* @param data >U[YSsFt6
* @param j je~gk6}Y
* @param i VxGR[kq$]
*/ T#R*]
private void insertSort(int[] data, int start, int inc) {
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int temp; VWE`wan<
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); C Z/:(sOJ
} fhQ}Z%$
} ?N!.:~~k
} H-Or
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} UNKXfe(X9
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快速排序: [%BWCd8Q~P
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package org.rut.util.algorithm.support; tp=/f
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import org.rut.util.algorithm.SortUtil; V']1j
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/** -Mufo.Jz1o
* @author treeroot I)cA:Ip
* @since 2006-2-2 PsoW:t
* @version 1.0 Z <vTr6?
*/ 3gU*,K7
public class QuickSort implements SortUtil.Sort{ R//S(eU68\
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/* (non-Javadoc) ]5i]2r1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (e6KSRh2fF
*/ _'DZoOH|VE
public void sort(int[] data) { \jThbCb
quickSort(data,0,data.length-1); 7
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} g|V0[Hnq6
private void quickSort(int[] data,int i,int j){ YXjWk),
int pivotIndex=(i+j)/2; TP&&' 4?D1
file://swap 5 iP{)
SortUtil.swap(data,pivotIndex,j); Q?TXM1Bp
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j
int k=partition(data,i-1,j,data[j]); P0^7hSo
SortUtil.swap(data,k,j); cvl1X"
if((k-i)>1) quickSort(data,i,k-1); )Aa
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if((j-k)>1) quickSort(data,k+1,j); n!t][d/g+
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} ,Taq~
/** 23WlUM
* @param data b&Go'C{p
* @param i (J/!9NS:
* @param j 9$:+5f,%a
* @return 7[u$!.4{*
*/ Stxrgmu
private int partition(int[] data, int l, int r,int pivot) { H?<ceK'e
do{ B(|dT66K
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); hO}nc$S
SortUtil.swap(data,l,r); "jG-)k`a
} ,}_uk]AQ
while(l SortUtil.swap(data,l,r); \Z ms
return l; #mcU);s
} :*{\oqFn~$
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} BY^5z<^.
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改进后的快速排序: J?N9*ap)
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package org.rut.util.algorithm.support; JqmKD4p
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import org.rut.util.algorithm.SortUtil;
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/** "sU ~|
* @author treeroot -6u#:pVpU
* @since 2006-2-2 qo" _w%{
* @version 1.0 =3Hv
*/ Um'r6ty
public class ImprovedQuickSort implements SortUtil.Sort { 9K`uGu
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private static int MAX_STACK_SIZE=4096; v<U +&D{
private static int THRESHOLD=10; M~&X?/8
/* (non-Javadoc) >E3 lY/[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <<[hZ$.
*/ 'U'#_mYG
public void sort(int[] data) { *=ymK*
int[] stack=new int[MAX_STACK_SIZE]; &BDdJwE
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int top=-1; qEbzF#a-:
int pivot; k_<8SG+`
int pivotIndex,l,r; _z3YB
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stack[++top]=0; edy6WzxBcm
stack[++top]=data.length-1; oPA
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while(top>0){ !1\jD
int j=stack[top--]; DfQD!}=
int i=stack[top--]; az2CFd^M
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pivotIndex=(i+j)/2; f:-dw6a=s
pivot=data[pivotIndex]; U\Hd?&`9gz
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SortUtil.swap(data,pivotIndex,j); >av.pJ(>
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file://partition K2GcU_*t
l=i-1; H^no&$2`1
r=j; 0fTEb%z8
do{ !bi}9w
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); dnP3{!"b
SortUtil.swap(data,l,r); on q~wEr
} cOr@dUSL
while(l SortUtil.swap(data,l,r); YQ+Kl[ec
SortUtil.swap(data,l,j); 8>|@O<2\
=
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if((l-i)>THRESHOLD){ =_L
stack[++top]=i; 8/y~3~A{D
stack[++top]=l-1; U@$=0*
} I2wT]L UV
if((j-l)>THRESHOLD){ >%D=#}8l@
stack[++top]=l+1; _Vq7Gxy$R
stack[++top]=j; zjrr*iw
} mxRe2<W
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} 6v9{$:
file://new InsertSort().sort(data); O<x53MN^
insertSort(data); +RO=a_AS
} [,|Z<
/** 6GD Uo}.
* @param data S0ct;CS
*/ j8G>0f)
private void insertSort(int[] data) { %TJF+;
int temp; ",ic"
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Nv
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} {mp;^/O`er
} \JLiA>@@
} q$Ol"K@
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} DvuL1MeKo
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归并排序: @Yq!
B`4[@$
package org.rut.util.algorithm.support; Lu~e^Ul
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import org.rut.util.algorithm.SortUtil; +"]'h~W
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/** A/U tf0{3"
* @author treeroot &\C{,:[
* @since 2006-2-2 [^gSWU
* @version 1.0 bz~-uHC
*/ H\kqmPl&
public class MergeSort implements SortUtil.Sort{ ^/Hj^4~_U
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/* (non-Javadoc) DOXRU5uP3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m,u?
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*/ >oc7=F<8lS
public void sort(int[] data) { Lh &L5p7
int[] temp=new int[data.length]; } V4"-;P
mergeSort(data,temp,0,data.length-1); *ihg'
} Kg@9kJB
n#N<zC/
private void mergeSort(int[] data,int[] temp,int l,int r){ ;e0>.7m
int mid=(l+r)/2; oh;F]*k6
if(l==r) return ; b>%I=H%g
mergeSort(data,temp,l,mid); ^3`98y.Q
mergeSort(data,temp,mid+1,r); `.dTkL
for(int i=l;i<=r;i++){ ^}8_tZs8\
temp=data; p;n )YY$
} U6=m4]~Z
int i1=l; lb1(1|#
int i2=mid+1; 9wKz p
for(int cur=l;cur<=r;cur++){ _<.R \rX&
if(i1==mid+1) q<JI!n1O
data[cur]=temp[i2++]; y|KDh'Y
else if(i2>r) ^d"tymDd
data[cur]=temp[i1++]; (6\A"jey\x
else if(temp[i1] data[cur]=temp[i1++]; a~ REFy
else $^7&bQ
data[cur]=temp[i2++]; !*%3um
} !9o8v0ZI
} )K2n!Fbd
NUL~zb
} O!f* @
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改进后的归并排序: PJAir8
m$J'n A
package org.rut.util.algorithm.support; rI]:| k
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import org.rut.util.algorithm.SortUtil; 7*XG]=z/
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/** +N4h
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* @author treeroot Iz{AA-
* @since 2006-2-2 ((dG<
* @version 1.0 .^kTb2$X
*/ z|P& 8#txM
public class ImprovedMergeSort implements SortUtil.Sort { wU#Q>ut'%
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private static final int THRESHOLD = 10; <{-DYRiN
6!Isz1.re
/* v!`M=0k
* (non-Javadoc) YgWnPp
* \iVYhl
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1<R
\V
*/ w\t{'
public void sort(int[] data) { tOko %vY8
int[] temp=new int[data.length]; <1jiU%!w
mergeSort(data,temp,0,data.length-1); Ar'5kPzY>
} d&'6l"${
-`?V8OwY]
private void mergeSort(int[] data, int[] temp, int l, int r) { d'-^VxO0
int i, j, k; F37,u|
int mid = (l + r) / 2; <I|ryPU9{X
if (l == r) jA]xpf6}
return; V
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if ((mid - l) >= THRESHOLD) -=qmYf
mergeSort(data, temp, l, mid); fCVSVn"o
else Yp
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insertSort(data, l, mid - l + 1); |R[m&uOib
if ((r - mid) > THRESHOLD) YT:5J%"
mergeSort(data, temp, mid + 1, r); .HtDcGp
else 2C8M1^0:Z
insertSort(data, mid + 1, r - mid); $K
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zR<jZwo]#
for (i = l; i <= mid; i++) { :e9E#o
temp = data; RZ.5:v6
} )US)-\^
for (j = 1; j <= r - mid; j++) { Aio0++r-
temp[r - j + 1] = data[j + mid]; (?3(=+t
} H5aUZ=
int a = temp[l]; QWP_8$Q
int b = temp[r]; eeX)JC0A
for (i = l, j = r, k = l; k <= r; k++) { n_+Iw,a'm
if (a < b) { 4v?S`w:6
data[k] = temp[i++]; 5y~[2jB:
a = temp; _6[NYv$"
} else { HYY|)Wo
data[k] = temp[j--]; G
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b = temp[j]; '\;tmD"N5#
} lk'RWy"pw
} }Ag2c; aaq
} Av[jFk
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/** O|/tRkDMP{
* @param data {p/m+m
* @param l .KD07
* @param i f;Dz(~hw
*/ 5Tu.2.)N
private void insertSort(int[] data, int start, int len) { LSs={RD2+p
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); S&0x:VW
} ,s)H%
} ^q6~xC,/
} +1y#=iM{
} }0TY
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堆排序: 3m^BYr*y^
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package org.rut.util.algorithm.support; Zry>s0
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import org.rut.util.algorithm.SortUtil; eOb`uyi
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/** ZUu^==a
* @author treeroot zxh"@j$?
* @since 2006-2-2 A>?fbY2n
* @version 1.0 !2Orklzd1
*/ dd$N4&
public class HeapSort implements SortUtil.Sort{ ,uv$oP-
5c"kLq6r
/* (non-Javadoc) )=D&NO67Pq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &0g,Xkr
*/ cC4T3]4l'
public void sort(int[] data) { l;.BlHyu
MaxHeap h=new MaxHeap(); +6=!ve}
h.init(data); lK4+8VZ
for(int i=0;i h.remove(); <} %ir,8
System.arraycopy(h.queue,1,data,0,data.length); %gaKnT(|r
} +RkYW*|$S
1 XG-O
private static class MaxHeap{ pd#/;LT
)hug<D *h
void init(int[] data){ -?W@-*J
this.queue=new int[data.length+1]; 6"7qZq
for(int i=0;i queue[++size]=data; z'lNO| nU
fixUp(size); Ro<kp8
} Bu1z$#AC
} #lF<="y%X
K(gj6SrjV
private int size=0; i.sq^]j
guv@t&;t0
private int[] queue; o(P:f)B
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public int get() { g1~I*!p
return queue[1]; hptuTBD
} PlZiTP
K_QCYS.
public void remove() { [Ni4[\
SortUtil.swap(queue,1,size--); Y9;Mey*oW
fixDown(1); x1wxB
1)2
} 2?QJh2
file://fixdown Q$1K{14I
private void fixDown(int k) { Nd!VR+IZ
int j; vi8~j
while ((j = k << 1) <= size) { ^>Y%L(>
if (j < size %26amp;%26amp; queue[j] j++; &r%*_pX
if (queue[k]>queue[j]) file://不用交换 ^{:jY, ?]
break; iIE(zw)H
SortUtil.swap(queue,j,k); pr txE&-
k = j; k`TJ<Dv;
} (GG"'bYk
} 2~V Im#
private void fixUp(int k) { ZRB 0OH
while (k > 1) { Yys~p2
int j = k >> 1; t\i1VXtO
if (queue[j]>queue[k]) !dY:S';~
break; bZ.N7X PH
SortUtil.swap(queue,j,k); +ZKhmb!
k = j; iwQ-(GjM[A
} "Vq]|j,B/c
} 4Umsc>yfK
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} Z~c'h
M"^Vf{X^
} 5vft}f
Y/H^*1
SortUtil: xXZKj
pFTlhj)1
package org.rut.util.algorithm; n=? 0g;1!
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import org.rut.util.algorithm.support.BubbleSort; P/Kit?kngS
import org.rut.util.algorithm.support.HeapSort; 5L}>+js2
import org.rut.util.algorithm.support.ImprovedMergeSort; 5lnSa+_/f
import org.rut.util.algorithm.support.ImprovedQuickSort; ulf/C%t,R
import org.rut.util.algorithm.support.InsertSort; ).C!
import org.rut.util.algorithm.support.MergeSort; Rt^<xXX$
import org.rut.util.algorithm.support.QuickSort; p{q!jm~Nq
import org.rut.util.algorithm.support.SelectionSort; 4q13xX
import org.rut.util.algorithm.support.ShellSort; *O>aqu
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/** i ,pN1_-
* @author treeroot O[)]dD&'
* @since 2006-2-2 cmhN(==
* @version 1.0 eJw="
*/ Eqbe$o`dd
public class SortUtil { ShJK&70O
public final static int INSERT = 1; |<-F|v9og
public final static int BUBBLE = 2; <{420
public final static int SELECTION = 3; rAWl0y_m
public final static int SHELL = 4; +RV- VrV
public final static int QUICK = 5; S tnv>
public final static int IMPROVED_QUICK = 6; K3:|Tc(
public final static int MERGE = 7; T_?nd T2
public final static int IMPROVED_MERGE = 8; QZ3(u<f
public final static int HEAP = 9; HDVl5X`j'
fu<2t$Cn>
public static void sort(int[] data) { d:hL
)x
sort(data, IMPROVED_QUICK); sD8m<
} NOr
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private static String[] name={
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"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ^qO=~U!{
}; !UoU#YU
Zknewv*sS4
private static Sort[] impl=new Sort[]{ C$LRY~\
new InsertSort(), 6_<s=nTX
new BubbleSort(), c~UAr k S
new SelectionSort(), i9eyrl+!
new ShellSort(), s
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new QuickSort(), ydND$@; Z
new ImprovedQuickSort(), HNy/ -
new MergeSort(), x8?x/xE
new ImprovedMergeSort(), 5 n+ e
new HeapSort()
{kPe#n>xT
}; q{cp|#m#G
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public static String toString(int algorithm){ LxlbD#<V
return name[algorithm-1]; o}MzqKfu
} Sf&?3a+f
jD/7/G*
public static void sort(int[] data, int algorithm) { XDkS
^9
impl[algorithm-1].sort(data); 8b:clvh
} &.Latx
Ji6`-~ k
public static interface Sort { P$18Xno{
public void sort(int[] data); ZSPgci
} W 9Vz[
*el(+ib%
public static void swap(int[] data, int i, int j) { yYToiW *
int temp = data; n<?SZ^X{,/
data = data[j]; sr+gD*@h
data[j] = temp; #_?TIY:h
} 'sRg4?PT
} 3X$Q,