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%>]q
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插入排序: + &Eqk
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package org.rut.util.algorithm.support; 7JH6A'&
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import org.rut.util.algorithm.SortUtil; ZLejcYS
/** ouQ T
* @author treeroot M6jy\<a
* @since 2006-2-2 ~36!?&eA8
* @version 1.0 g3y~bf
*/ @":
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public class InsertSort implements SortUtil.Sort{ tyFzSrfc
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/* (non-Javadoc) KZE,bi:~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rb.N~
*/ n_A3#d<9
public void sort(int[] data) { 6bC3O4Rw
int temp; _`T_">9r
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?fSG'\h>
} S,UDezxg
}
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} ,f>k%_U}
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冒泡排序: *GPiOA
a
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package org.rut.util.algorithm.support; #X1ND
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import org.rut.util.algorithm.SortUtil; TvbE2Q;/UL
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/** g2_"zDiw2
* @author treeroot onzxx4bax
* @since 2006-2-2 f+!(k)GWd
* @version 1.0 k9!{IScq
*/ Fx.=#bVX7
public class BubbleSort implements SortUtil.Sort{ Dp9+HA9t
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/* (non-Javadoc) UaeXY+O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :vbW
*/ O\r0bUPE
public void sort(int[] data) { {P_.~0pc*
int temp; 6i/(5 nQ
for(int i=0;i for(int j=data.length-1;j>i;j--){ 26h21Z16q
if(data[j] SortUtil.swap(data,j,j-1); eSq.GtI
} b\2
ds,
} %'pgGC"|
} I!K6o.|1
} j\M?~=*w
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} > ~O.@|
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选择排序: gcT%c|.
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package org.rut.util.algorithm.support; ;4\;mmLVk
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import org.rut.util.algorithm.SortUtil; i/Zd8+.n$
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/** 3Y$GsN4ln
* @author treeroot Q$"D]!G
* @since 2006-2-2 ~t~|"u"P
* @version 1.0 ;2QP7PrSY
*/ K-Ef%a2#`
public class SelectionSort implements SortUtil.Sort { ]Y&VT7+Z
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/* V'gh6`v
* (non-Javadoc) 5{,<j\#L
* W"{N Bi
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8quaXVj^a
*/ !4+<<(B=E
public void sort(int[] data) { ox.F%)eQ
int temp; $XH^~i;
for (int i = 0; i < data.length; i++) { OjA,]Gv6
int lowIndex = i; CqC`8fD1
for (int j = data.length - 1; j > i; j--) { 9\(|
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if (data[j] < data[lowIndex]) { Q3?F(ER@
lowIndex = j; p]c%f2E>d
} ;O,jUiQ
} fk-RV>yr
SortUtil.swap(data,i,lowIndex); 4*;MJ[|
} A04U /;
} q)
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} vl)l'
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Shell排序: j?QDR
#/37V2E
package org.rut.util.algorithm.support; Fsg*FH7J
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import org.rut.util.algorithm.SortUtil; lyhiFkO
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/** COlaD"Y
* @author treeroot (QB2T2x
* @since 2006-2-2 MolgwVd
* @version 1.0 )+Pus~w
*/ BMf@M
public class ShellSort implements SortUtil.Sort{ N'=gep0V@
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/* (non-Javadoc) 7G],T++N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) klhtKp_p
*/ 2X&qE}%k S
public void sort(int[] data) { [2cD:JL
for(int i=data.length/2;i>2;i/=2){ _@/8gPT*i
for(int j=0;j insertSort(data,j,i); ^LLzZnkcZ
} k9F=8q
} wy2
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insertSort(data,0,1); _o~nr]zx
} 8q7b_Pq1U
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/** c:.eGH_f
* @param data &%Tj/ Qx
* @param j ,R|BG
* @param i cB&:z)i4
*/ oP.7/*p
private void insertSort(int[] data, int start, int inc) { ddR>7d}N
int temp; Z3!`J&
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); -s/ea~=R
} u]@['7
} _SkLYL!=9
} +"VP-s0
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} +ck}l2
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快速排序: QmIBaMI#
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package org.rut.util.algorithm.support; U/BR*Zn]*
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import org.rut.util.algorithm.SortUtil; {(}By/_
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/** T[A69O]v
* @author treeroot Ga'swP=hf
* @since 2006-2-2 <9
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* @version 1.0 {l>hMxij
*/ jZ;
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public class QuickSort implements SortUtil.Sort{ Y6d@h? ht
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/* (non-Javadoc) 0ZO2#>gh$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y
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*/ /u+e0BHo
public void sort(int[] data) { n'w.;
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quickSort(data,0,data.length-1); ReeH@.74
} WuW^GC{7
private void quickSort(int[] data,int i,int j){ g=o4Q<
#^y
int pivotIndex=(i+j)/2; B7vpsSL
file://swap @s^-.z
SortUtil.swap(data,pivotIndex,j); RpYERAgT
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int k=partition(data,i-1,j,data[j]); )\^-2[;
SortUtil.swap(data,k,j); pD]OT-8
if((k-i)>1) quickSort(data,i,k-1); ~u+9J}
if((j-k)>1) quickSort(data,k+1,j); 5/z/>D;
=nHgDrA_
} gPc=2
/** t&DEb_"De
* @param data jF*j0PkNdb
* @param i 29q _BR *:
* @param j ~F7gP{r
* @return ^G-@06 /!
*/ dC4'{n|7
private int partition(int[] data, int l, int r,int pivot) { y* h<MQ
do{ 6S\8$
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Y[S1$(K&*
SortUtil.swap(data,l,r); @xZR9Z8]L
} RCLeA=/N@0
while(l SortUtil.swap(data,l,r); 4v|W-h"K
return l; u>/ TE
} 61
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} BL58] P84
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改进后的快速排序: $u6
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package org.rut.util.algorithm.support; ~< x:q6
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import org.rut.util.algorithm.SortUtil; uUw5l})%Fi
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/** XBw)H
* @author treeroot f:P}*^
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* @since 2006-2-2 .XhrCiZ
* @version 1.0 :P=(k2
*/ Ld-_,-n
public class ImprovedQuickSort implements SortUtil.Sort { r/*D:x|yN
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private static int MAX_STACK_SIZE=4096; pcI uN
private static int THRESHOLD=10; S>;
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/* (non-Javadoc) 9JKEw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HLHz2-lI
*/ x3eZ^8^1}
public void sort(int[] data) { f'3$9x
int[] stack=new int[MAX_STACK_SIZE]; VgS_s k
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int top=-1; ,wdD8ZT'Ip
int pivot; 9@)O_@=
int pivotIndex,l,r; h3@v+Z<}
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stack[++top]=0; Y:)e(c"A
stack[++top]=data.length-1; B^jc3 VsR
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while(top>0){ S`m]f5u|
int j=stack[top--]; BJo*'US-Q
int i=stack[top--]; "8zDbdK
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pivotIndex=(i+j)/2; w^0nqh
pivot=data[pivotIndex]; K,:N
63x?MY6
SortUtil.swap(data,pivotIndex,j); t5IEQ2
iMRwp+$
file://partition '(jG[ry&T
l=i-1; [;myHI`tw
r=j; Nu~lsWyRI5
do{ %C_HXr@
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ',5ky{
SortUtil.swap(data,l,r); =zs`#-^8
} t9IW/Q
while(l SortUtil.swap(data,l,r); 57'4ljvYi
SortUtil.swap(data,l,j); 2jCf T>`3
7W.~
if((l-i)>THRESHOLD){ H~z`]5CN
stack[++top]=i; PRE|+=w$
stack[++top]=l-1; VBcPu
} QUQ'3
if((j-l)>THRESHOLD){ `,*5wBC
stack[++top]=l+1; 1D!<'`)AY
stack[++top]=j; #@nezu2
} I ?.^ho
LvYB7<zk>
} m/EFHS49
file://new InsertSort().sort(data); ?p8_AL'RS
insertSort(data); J`1rJ
} V,N%;iB}
/** t}tEvh
* @param data G?Hdq;
*/ G9<X_
private void insertSort(int[] data) { /fV;^=:8c
int temp; q?/a~a
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); T:W4$P
} )p%E%6p
} OJy#w{4
}
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} @cB$iP=Z4
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归并排序: O463I.XAP
2*#|Nj=^
package org.rut.util.algorithm.support; 4d;8`66O
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import org.rut.util.algorithm.SortUtil; by/jYg)+
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/** /%A*aGyIc
* @author treeroot ZbAcO/
* @since 2006-2-2 [Hh9a;.*}h
* @version 1.0 y9}>: pj4
*/ $l&(%\pp
public class MergeSort implements SortUtil.Sort{ a-L;*
*,WU?tl&
/* (non-Javadoc) UFb)AnK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /FEVmH?
*/ L8#5*8W6
public void sort(int[] data) { OX\F~+
int[] temp=new int[data.length]; ;q6Ki.D
mergeSort(data,temp,0,data.length-1); bhlG,NTP
} l"]}Ts#
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private void mergeSort(int[] data,int[] temp,int l,int r){ p,i[W.dy.'
int mid=(l+r)/2; ,]c
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if(l==r) return ; Aj+F
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mergeSort(data,temp,l,mid); 1Nd2{(
mergeSort(data,temp,mid+1,r);
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for(int i=l;i<=r;i++){ x>`%DwoRI
temp=data; (mt k 4
} 3HY9\'t6
int i1=l; O55 xS+3^k
int i2=mid+1; !5uGd`^I
for(int cur=l;cur<=r;cur++){ i9][N5\$
if(i1==mid+1) t"/q]G5
data[cur]=temp[i2++]; l$bu%SZ
else if(i2>r) G,Azm}+
data[cur]=temp[i1++]; K?$^@N
else if(temp[i1] data[cur]=temp[i1++]; >>fH{/l
else .gOL1`b*
data[cur]=temp[i2++]; hv_XP,1K
} OMg<V
} >_ 2dvg=U
/HRFAqep
}
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改进后的归并排序: naznayy
2'MZ s]??w
package org.rut.util.algorithm.support; Ffta](Z;
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import org.rut.util.algorithm.SortUtil; 9ahWIO%
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/** [!]2djc
* @author treeroot Bad:no\W
* @since 2006-2-2 O~K>4ax
* @version 1.0 tc{sB\&-
*/ !6Mo]xh
public class ImprovedMergeSort implements SortUtil.Sort { O2dW6bt
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private static final int THRESHOLD = 10; JKGe"
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/* uT7B#b7
* (non-Javadoc) 1 \6D '/G
* KE3;V2Ym f
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G..aiA
*/ 0o*8#i/)!3
public void sort(int[] data) { r/6o \-
int[] temp=new int[data.length]; _#8RSr8'y
mergeSort(data,temp,0,data.length-1); Ur=(.%@
} eu|;eP-+d
e@*
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private void mergeSort(int[] data, int[] temp, int l, int r) { ?\s+EE&-
int i, j, k; /9pwZ%:<
int mid = (l + r) / 2; o@i#|kx,
if (l == r) 6 EC*
return; yx&51G$
if ((mid - l) >= THRESHOLD) ;8{4!S&b
mergeSort(data, temp, l, mid); C-6F]2:
else 1rF]yi:X
insertSort(data, l, mid - l + 1); !*bMa8]*
if ((r - mid) > THRESHOLD) q}#6e]t
mergeSort(data, temp, mid + 1, r); "v({,
else $#pPZ
insertSort(data, mid + 1, r - mid); KRMQtgahc
OCaq3_#tZ
for (i = l; i <= mid; i++) { TOXfWEU3>
temp = data; e)#J1(j_
} h2J/c#Qvh
for (j = 1; j <= r - mid; j++) { 8~z~_TD6m@
temp[r - j + 1] = data[j + mid]; 6){]1h"
} e-#BDN(O
int a = temp[l]; nWYN Np?h
int b = temp[r]; E`de7
for (i = l, j = r, k = l; k <= r; k++) { n'kG] Q
if (a < b) { =Bhe'.]QSx
data[k] = temp[i++]; aa#Y=%^
a = temp; =sJ7=39
} else { EZ$>.iy{
data[k] = temp[j--]; "~7>\>UFh
b = temp[j]; #S*/bao#
} |\IN.W[EL
} K<Iv:5-2
} 4\u1TYR
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/** PV\+P6aIb
* @param data ]<rkxgMW>
* @param l oO|KEY(
* @param i 0C
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*/ 6vNrBB
private void insertSort(int[] data, int start, int len) { %Iv,@}kvT+
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); KZ
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} ,J^b0@S
} "h a L
} dj7hx"BI
} yvHA7eq*"
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堆排序: h!.^?NF
p#?7w
package org.rut.util.algorithm.support; ?Unb?
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import org.rut.util.algorithm.SortUtil; ,<tX%n`v=
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/** >dG;w6y'
* @author treeroot =Og)q$AL
* @since 2006-2-2 B43HNs
* @version 1.0 _%!c+f7
*/ *@v)d[z_
public class HeapSort implements SortUtil.Sort{ #_J@-f7^
IsM}'.
/* (non-Javadoc) XJ` ]ga
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z/0fXn})
*/
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public void sort(int[] data) { uU <=d
MaxHeap h=new MaxHeap(); _c*=4y
h.init(data); s{S4J'VW
for(int i=0;i h.remove(); M&@b><B
System.arraycopy(h.queue,1,data,0,data.length); &d+Kg0 :
} 0y;*Cfi9
n}_JB>i~
private static class MaxHeap{ ?Exv|e
B~JwHwIhA
void init(int[] data){ ~&8^9E a
this.queue=new int[data.length+1]; 4c$ zKqz
for(int i=0;i queue[++size]=data; f]|ysf
fixUp(size); YoZFwRQU
} r(aLEJ"u?
} A3no~)wZn
M/ni6%x
private int size=0; Jz.NHiLct1
v~V5`%
private int[] queue; Vq5k+3W+
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public int get() { L,`Lggq-
return queue[1]; ;8*`{F[
} G_{&sa
6@e+C;j=
public void remove() { 8U>B~9:JO
SortUtil.swap(queue,1,size--); L[H5NUG!
fixDown(1); EB=-H#
} jN>{'TqW4
file://fixdown D@|W<i-
private void fixDown(int k) { jR22t`4
int j; ^ZhG>L*
while ((j = k << 1) <= size) { V |/NB
if (j < size %26amp;%26amp; queue[j] j++; ') gi%
if (queue[k]>queue[j]) file://不用交换 o/6-3QUak
break; V\6[}J
SortUtil.swap(queue,j,k); /<}m? k\
k = j; >.'*)@vQi
} Nz+949X
} rI>aAW'
private void fixUp(int k) { h\.zdpR
while (k > 1) { O-cbX/d
int j = k >> 1; AW_(T\P:u
if (queue[j]>queue[k]) v<OJ69J
break; Q`D~5ci
SortUtil.swap(queue,j,k); YW`,v6
k = j; (TwnkXrR,
} "@d[h ,TM
} wsN?[=l{s
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} t!x5 fNo)
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} m&\h4$[kql
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SortUtil: }i`PGx
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package org.rut.util.algorithm; gu<'QV"
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import org.rut.util.algorithm.support.BubbleSort; aj}sc/Qa
import org.rut.util.algorithm.support.HeapSort; VUYmz)m5
import org.rut.util.algorithm.support.ImprovedMergeSort; Q7$.LEioN
import org.rut.util.algorithm.support.ImprovedQuickSort; @,u/w4
import org.rut.util.algorithm.support.InsertSort; kRD%b[*d
import org.rut.util.algorithm.support.MergeSort; Zh*u(rO
import org.rut.util.algorithm.support.QuickSort; Z@&Dki
import org.rut.util.algorithm.support.SelectionSort; Ucm :S-
import org.rut.util.algorithm.support.ShellSort;
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6
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/** 2eC(Ijq[a
* @author treeroot !V\Q<So<
* @since 2006-2-2 \XM^oE#G
* @version 1.0 ZAUQJS 91E
*/ 92d6U2T4&
public class SortUtil { 4Hn`'+b
public final static int INSERT = 1; ./D$dbu3
public final static int BUBBLE = 2; w@c87;c
public final static int SELECTION = 3; |-
rI@2`
public final static int SHELL = 4; ,^ WJm?R
public final static int QUICK = 5; >O?U=OeD
public final static int IMPROVED_QUICK = 6; ~J8pnTY
public final static int MERGE = 7; i|}[A
public final static int IMPROVED_MERGE = 8; psC
mbN
public final static int HEAP = 9; !]fQ+ *X0g
q7Dw_<
public static void sort(int[] data) { o{EC&-
sort(data, IMPROVED_QUICK); iMFgmM|
} E%v?t1>/
private static String[] name={ E}_[QEY;Y
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 6,LubZFD
};
wm")[!h)v
(_*5oj-
private static Sort[] impl=new Sort[]{ X*Dj[TD]
new InsertSort(), W4U@%b do
new BubbleSort(), UybW26C;aU
new SelectionSort(), _uKZ Ml
new ShellSort(), dT$M y`>
new QuickSort(),
qY$qaM^=
new ImprovedQuickSort(), *B\H-lp?
new MergeSort(), Vc%R$E%
new ImprovedMergeSort(), qc!MG_{Y
new HeapSort() v-Fg
+
}; o fMY,~w
U
uM$~qf/K
public static String toString(int algorithm){ ;)I'WQ]Q
return name[algorithm-1]; a9Z%JS]
} Ppt2A6W
80 Y\|)
public static void sort(int[] data, int algorithm) { <~X >[PK<
impl[algorithm-1].sort(data); gEhN3(
} @]c(V%x
hj$e|arB
public static interface Sort { `^Eae
public void sort(int[] data); N2$I}q%
} c$`4*6
7,MS '2nz
public static void swap(int[] data, int i, int j) { 0lsXCr_X
int temp = data; ;k86"W
data = data[j]; z%7SrUj2
data[j] = temp; rVa?JvDO=
}
|?,[@z _,
} 7`H
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