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。 GbFLu`I u
插入排序: 3l_Ko%qS
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package org.rut.util.algorithm.support; cv=nGFx6
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import org.rut.util.algorithm.SortUtil; ZR.1SA0x?O
/** :9Zu&t
* @author treeroot 5+vCuVZ
* @since 2006-2-2 }fpK{db
* @version 1.0 ,24NMv7
*/ b'Pq[ )
public class InsertSort implements SortUtil.Sort{ ]( V+ qj
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/* (non-Javadoc) R7;SZo
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8/,m8UOY
*/ rlT[tOVAY
public void sort(int[] data) { XKp.]c wP
int temp; gh=s#DQsFw
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);
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} 7}OzTup
} r5jiB L~
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} 5L bU'5
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冒泡排序: ?BT\)@h
bN$`&fC0
package org.rut.util.algorithm.support; gP"p7\
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import org.rut.util.algorithm.SortUtil; @[#U_T- I
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/** /ZqBO*]
* @author treeroot ,mEFp_a+
* @since 2006-2-2 ^"7tfo8
* @version 1.0 >8_#L2@
*/ 5JW+&XA
public class BubbleSort implements SortUtil.Sort{ sP$bp Z}
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/* (non-Javadoc) 0@d )DLM?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <MZ$ baK
*/ DE|r~TQ
public void sort(int[] data) { ;F9<Yv
int temp; RBIf6oxdE
for(int i=0;i for(int j=data.length-1;j>i;j--){ Zq=t&$*
if(data[j] SortUtil.swap(data,j,j-1); }^Be^a<ub
} CnruaN@
} }$!bD
} :-ZE~bHJ
} @/*{8UBP
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} x^Tjs<#
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选择排序: [Av#Z)R
=Xh^@OR
package org.rut.util.algorithm.support; C=(-oI n
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import org.rut.util.algorithm.SortUtil; ,X(P/x{B
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/** SQ|pH"
* @author treeroot fL.;-
* @since 2006-2-2 TU$PAwn=
* @version 1.0 vl*CU"4
*/ `fh^[Q|4n0
public class SelectionSort implements SortUtil.Sort { ATCFdtNc
7)$U>|=
/* 0#4_vg .
* (non-Javadoc) v'Ce|.;
* (RG\U[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dQ ?4@
*/ 26JP<&%L
public void sort(int[] data) { E]w1!Ah M
int temp; g]85[xz
for (int i = 0; i < data.length; i++) { v1<gNb)`
int lowIndex = i; ;Q&38qI
for (int j = data.length - 1; j > i; j--) { K];nM}<
if (data[j] < data[lowIndex]) { $V-]DD%Y
lowIndex = j; T:o!H
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} ,{:c<W:A]
} _ _cJ+%e
SortUtil.swap(data,i,lowIndex); HmKvu"3
} \eF5* {9
} w]]`/`
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} @Tb
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Shell排序: zy`4]w$Lj+
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package org.rut.util.algorithm.support; *zeY<6
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import org.rut.util.algorithm.SortUtil; loN!&YceW
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/** =o\:@I[
* @author treeroot ov: h4
* @since 2006-2-2 y _J~n 9R
* @version 1.0 c'OJodpa
*/ H6E@C}cyM
public class ShellSort implements SortUtil.Sort{ u /!U/|
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/* (non-Javadoc) #n%?}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cw.Uy(ks|$
*/ $_ub.g|
public void sort(int[] data) { oc'#sE
for(int i=data.length/2;i>2;i/=2){ z"o;|T:
for(int j=0;j insertSort(data,j,i); u_.V]Rjc
} t+}@J}b
} YS=|y}Q|7d
insertSort(data,0,1); w8:F^{
} ^% BD
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/** BL0WI9
* @param data SFoF]U09
* @param j ac>}$Uw)
* @param i "BjQs<]%sF
*/ k/AcXU%O+
private void insertSort(int[] data, int start, int inc) { +A8S 6bA[=
int temp; +JZ<9,4
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 6nt$o)[
} T[xGF/
} bL_s[-7
} 'j#oMA{0
rMxst
} ;hF >iw
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快速排序: gJi11^PK
S1uW`zQ!+_
package org.rut.util.algorithm.support; G+4a%?JH
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import org.rut.util.algorithm.SortUtil; 9pE)S^P
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/** I /3=~;u
* @author treeroot B;4hI?
* @since 2006-2-2 o;FjpZ
* @version 1.0 ;w4rwL
*/ ,iCd6M{
public class QuickSort implements SortUtil.Sort{ 5{#9b^
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/* (non-Javadoc) N\H{p%8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \s&w0V`Y
*/ R8EDJ2u#
public void sort(int[] data) { YV-2es+Bd
quickSort(data,0,data.length-1); lO%Z4V_Mj
} v0X5`VV
private void quickSort(int[] data,int i,int j){ ^]'p927
int pivotIndex=(i+j)/2; ;Iw'TF
file://swap i3: sV 5
SortUtil.swap(data,pivotIndex,j); 6#N1 -@
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int k=partition(data,i-1,j,data[j]); x0.&fCh%
SortUtil.swap(data,k,j); 'Twi
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if((k-i)>1) quickSort(data,i,k-1); M(Jf&h4b
if((j-k)>1) quickSort(data,k+1,j); jR@-h"2*A
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} zQ]IlMt
/** )~d2`1zGS
* @param data ~SM2W%
* @param i $0LlaN@e
* @param j 6e |
* @return 1{o
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*/ H=X>o.iVqi
private int partition(int[] data, int l, int r,int pivot) { \Zoo9Wy
do{ U@& <5'
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); <py~(q
SortUtil.swap(data,l,r); xO1d^{~^^
} V2,.@j#
while(l SortUtil.swap(data,l,r); ys+?+dY2
return l; L8bq3Q'p
} wk9tJ#}
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} y
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改进后的快速排序: bL0+v@(r
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package org.rut.util.algorithm.support; ~d{E>J77j
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import org.rut.util.algorithm.SortUtil; =[1W.Zt
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/** lq.0?(
* @author treeroot +\:I3nKs%
* @since 2006-2-2 <wE2ly&x
* @version 1.0 X/7: *
*/ zv0RrF^
public class ImprovedQuickSort implements SortUtil.Sort { <mm}IdH
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private static int MAX_STACK_SIZE=4096; -3 W4
private static int THRESHOLD=10; x,7axx6
/* (non-Javadoc) ?: meix
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YRYrR|I
*/ B;K{Vo:C
public void sort(int[] data) { ![vc/wuf
int[] stack=new int[MAX_STACK_SIZE]; G&uj}rj
j zPC9
int top=-1; ;<&s_C3
int pivot; U;jk+i
int pivotIndex,l,r; 3c9[FZ@ya
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stack[++top]=0; [ B (lJz
stack[++top]=data.length-1; omRd'\ RO
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while(top>0){ {M%"z,GL7J
int j=stack[top--]; rg'? ?rq
int i=stack[top--]; n]o+KT\
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pivotIndex=(i+j)/2; lO9>?y8.y
pivot=data[pivotIndex]; KBJ|P^W5j
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SortUtil.swap(data,pivotIndex,j); uY;/3?k&
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file://partition #g|j;{P
l=i-1; C/cGr)|8%
r=j; !t_,x=
do{ rmhCuY?f
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Maxnk3n
SortUtil.swap(data,l,r); l y%**iN
} 4u(}eE
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while(l SortUtil.swap(data,l,r); C>03P.s4c
SortUtil.swap(data,l,j); 4p-$5Fk8}
c:$:j,i}
if((l-i)>THRESHOLD){ 2;&13%@!
stack[++top]=i; 4kz8U
stack[++top]=l-1; Xoik%T-
} wG|3
iFK
if((j-l)>THRESHOLD){ nRo`O
stack[++top]=l+1; 21WqLgT3 4
stack[++top]=j; xH
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} g9
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} yf8UfB#a
file://new InsertSort().sort(data); XWvs~Xw@
insertSort(data); Ey n3Vv?v
} ^twv0>vEo
/** |knP
* @param data q#778
*/ iwVra"y
private void insertSort(int[] data) { H@3+K$|v
int temp; R5i8cjKZ?w
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); +Va?wAnr
} {xykf7zp
} c,-x}i0c
} 3Mcz9exY
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} bOFLI#p&
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归并排序: b{ozt\: M
q%'ovX(dm
package org.rut.util.algorithm.support; N4v)0
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import org.rut.util.algorithm.SortUtil; ?rOb?cu-
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/** p%ZiTrA1&D
* @author treeroot 0>;#vEF*1
* @since 2006-2-2 6m"
75
* @version 1.0 G9a%N
*/ P3yiJ|vP
public class MergeSort implements SortUtil.Sort{ (p?3#|^
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/* (non-Javadoc) ]p*)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bsP;
*/ 48ma&f;
public void sort(int[] data) { 5muW*7
int[] temp=new int[data.length]; `p{!5
mergeSort(data,temp,0,data.length-1); Y z,!#ob$
} RsD`9>6)
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private void mergeSort(int[] data,int[] temp,int l,int r){ j>Z]J'P
int mid=(l+r)/2; Q Bw
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if(l==r) return ; ._&lG3'
mergeSort(data,temp,l,mid); ?iLd5 Z
mergeSort(data,temp,mid+1,r); [4hO3):F
for(int i=l;i<=r;i++){ NslA/"*
temp=data; <ut DZ#k
} QP[a^5;Tt
int i1=l; (K6`nWk2
int i2=mid+1; $048y
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for(int cur=l;cur<=r;cur++){ h*KHEg"+
if(i1==mid+1) $
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data[cur]=temp[i2++]; rc$!$~|I3Z
else if(i2>r) ,/:a77
data[cur]=temp[i1++]; AMd)d^;
else if(temp[i1] data[cur]=temp[i1++]; 4LEE
/
else E.`dk.
data[cur]=temp[i2++]; )h0E$*
} ^B5cNEO
} dn\F!
b H?qijrC
} dl6v
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改进后的归并排序: 7F(F.ut
+w.Kv
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package org.rut.util.algorithm.support; VMIX$#
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import org.rut.util.algorithm.SortUtil; -+rF]|Wi
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/** paNw5]
-
* @author treeroot GD[ou.C}k
* @since 2006-2-2 X^D9)kel
* @version 1.0 s!'A\nVV1$
*/ o~x39
public class ImprovedMergeSort implements SortUtil.Sort { =b<<5N s
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private static final int THRESHOLD = 10; zg7l>9Sc
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/* T]6c9_
* (non-Javadoc) `GQiB]Z
* akhL\-d)al
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,B %fjcn
*/ E ;!<Z4
public void sort(int[] data) { G|-\T(&J
int[] temp=new int[data.length]; #t@x6Vt
mergeSort(data,temp,0,data.length-1); )J+{oB[>b
} r)p2'+}pV
;}WtJ&y=M
private void mergeSort(int[] data, int[] temp, int l, int r) { adI!W-/R:
int i, j, k; ;4G\]%c)E{
int mid = (l + r) / 2; @?Gw|bP
if (l == r) n#>.\F
return; 4Oy.,MDQP
if ((mid - l) >= THRESHOLD) t0bhXFaiE
mergeSort(data, temp, l, mid); ;tp]^iB#
else :4ja@~
insertSort(data, l, mid - l + 1); ov`^o25f
if ((r - mid) > THRESHOLD) eA?uny
f2r
mergeSort(data, temp, mid + 1, r); !ww:O| 0
else @VC .>
insertSort(data, mid + 1, r - mid); +9zJlL^A%
DB`$Ru@
for (i = l; i <= mid; i++) { #0bO)m+NZ
temp = data; Q1`<fD
} :}@C9pqr2
for (j = 1; j <= r - mid; j++) { Dxt),4%P
temp[r - j + 1] = data[j + mid]; o)%-l4S
} U~:N^Sc
int a = temp[l]; U{uPt*GUd/
int b = temp[r]; RpO@pd m
for (i = l, j = r, k = l; k <= r; k++) { Y=vVxVI\
if (a < b) { ?P""KVpo
data[k] = temp[i++]; xF(
bS+(o
a = temp; ;)(Sdf[P
} else { EBoGJ_l
data[k] = temp[j--]; zoZ<)x=;
b = temp[j]; >4n+PXRXX
} J~Cc9"(
}
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} 3CR@'
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/** Ih.rC>)rx
* @param data Deg!<[Nw
* @param l q$r&4s)To
* @param i b4>``n
*/ -S"5{ N73
private void insertSort(int[] data, int start, int len) { 60!1D>,
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); gNShOu
} )~ 0}Et l
} U1ZIuDg'E
} ~xGoJrF\
} +I t#Z3
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堆排序: +R-h ,$\=7
7vn%kW=$
package org.rut.util.algorithm.support; 2w+U$6e C
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import org.rut.util.algorithm.SortUtil; Hd9XfU
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/** -? s&pKi
* @author treeroot {esJ=FV\
* @since 2006-2-2 +nZUL*Ut/
* @version 1.0 LL&ud_Y
*/ *?/tO,
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public class HeapSort implements SortUtil.Sort{ <,"4k&0Q>V
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/* (non-Javadoc) {;s;.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oM!xz1kVL
*/ e}'gvm
public void sort(int[] data) { :\XI0E
MaxHeap h=new MaxHeap(); S,)d(g3>
h.init(data); jMM$ d,7B
for(int i=0;i h.remove(); f`jc#f5+'
System.arraycopy(h.queue,1,data,0,data.length); ^$v3eKA
} A /(lK q
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private static class MaxHeap{ `K*b?:0lp
c.AYxI"
void init(int[] data){ ';0 qj$#
this.queue=new int[data.length+1]; As~(7?]r
for(int i=0;i queue[++size]=data; {:Aw_z:'
fixUp(size); O.,3|
} s,6`RI%
} F>zl9Vi<
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private int size=0; $=B8qZ+
oc7$H>ET1
private int[] queue; K*q[(,9
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public int get() { (-0ePSOG
return queue[1]; j~E",7Q'
} ~gE:-
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public void remove() { 8'Z:ydj^,
SortUtil.swap(queue,1,size--); >5hhd38
fixDown(1); 'm3t|:nMU
} MP^ d}FL
file://fixdown ,HB2hHD
private void fixDown(int k) { T f4tj!t-
int j; 8j5<6Cv_
while ((j = k << 1) <= size) { R'}95S<
if (j < size %26amp;%26amp; queue[j] j++; J-xS:Ha'l
if (queue[k]>queue[j]) file://不用交换 %zBCq"y
break; WOLuw%
SortUtil.swap(queue,j,k); z'7[T ie
k = j; M;w?[yEZ
} KS}hU~
} izgp*M,
private void fixUp(int k) { 'sh~,+g
while (k > 1) { r%@Lej5+
int j = k >> 1; s 5WqR8
if (queue[j]>queue[k]) Z[Qza13lo
break; "9!d]2.-Vk
SortUtil.swap(queue,j,k); =<}<Ny
k = j; ;5_{MCPM
} q:\g^_!OGA
} 2P#=a?~[
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} ;U9J++\d<A
q h/F
} Z@a9mFI?
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SortUtil: lot%N(mB`
\Ig68dFf%
package org.rut.util.algorithm; !Ucjax~
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import org.rut.util.algorithm.support.BubbleSort; te|?)j
import org.rut.util.algorithm.support.HeapSort; 9,uhfb^]
import org.rut.util.algorithm.support.ImprovedMergeSort; Vd^g9
import org.rut.util.algorithm.support.ImprovedQuickSort; dZ#&YG)?e
import org.rut.util.algorithm.support.InsertSort; Q;11N7+
import org.rut.util.algorithm.support.MergeSort; Kt@M)#
import org.rut.util.algorithm.support.QuickSort; ;~fT,7qBah
import org.rut.util.algorithm.support.SelectionSort; T>TWU:
import org.rut.util.algorithm.support.ShellSort; r{\1wt
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/** SIO&rrT.
* @author treeroot > fnh+M
* @since 2006-2-2 dr)YzOvba
* @version 1.0 -9N@$+T
*/ pl@O
N"=[
public class SortUtil { j',W 64
public final static int INSERT = 1; P-F)%T[
public final static int BUBBLE = 2; |4$M]M f0
public final static int SELECTION = 3; &'cL%.
public final static int SHELL = 4; O~j> ?
public final static int QUICK = 5; XL#[%X9
public final static int IMPROVED_QUICK = 6; !cKz7?w
public final static int MERGE = 7; ?
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public final static int IMPROVED_MERGE = 8; CYOI.#m2
public final static int HEAP = 9; 8!.ojdyn
QXCH(5as
public static void sort(int[] data) { V5+SWXZ
sort(data, IMPROVED_QUICK); l/;X?g5+
} mF` B#
private static String[] name={ n>@oBG)!
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" :#dE:L;T
}; NM ]bgpP
6'\6OsH
private static Sort[] impl=new Sort[]{ OL4z%mDZi
new InsertSort(), 8XbA'% o
new BubbleSort(), rG,5[/l
new SelectionSort(), z-M3
new ShellSort(), o7IxJCL=Q
new QuickSort(), gV&z2S~"
new ImprovedQuickSort(), \*=7#Vd
new MergeSort(), v<Bynd-
new ImprovedMergeSort(), SG6sw]x
new HeapSort() !i=nSqW
}; >0Q|nCx
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public static String toString(int algorithm){ v\(2&*
return name[algorithm-1]; oK 6(HF'&
}
}fp-5
s-dLZ.9F
public static void sort(int[] data, int algorithm) { bWOS `5
impl[algorithm-1].sort(data); c- .t>r&
} @A)R_p
{Zp\^/
public static interface Sort { A*W)bZs.
public void sort(int[] data); |_uaS
} LjV]0%j?r
&=4(l|wcg
public static void swap(int[] data, int i, int j) { :;t
#\%L/
int temp = data; 'M3">$N
data = data[j]; qKJSj
data[j] = temp; _~aG|mAj
} buk=p-oi
} nT#JOmv