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。 @Zov&01
插入排序: ^=V b'g3P~
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package org.rut.util.algorithm.support; (n3MbVi3LU
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import org.rut.util.algorithm.SortUtil; Z/w "zCd
/** <m!(eLm+B
* @author treeroot 47
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* @since 2006-2-2 [Uw/;Kyh
* @version 1.0 z9)I@P"
*/ L>Soj|WUy(
public class InsertSort implements SortUtil.Sort{ Xj("
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/* (non-Javadoc) !$5.\D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F F7
*/ Ua=w;h
public void sort(int[] data) { ?R VY%s;g
int temp; 6Om)e=gU/
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); nFY6K%[
} VQ((c:+!
} /WWD;keP5
} :Mq-4U.e
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} d0MF\yxh
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冒泡排序: qe"t0w|U?
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package org.rut.util.algorithm.support; us
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import org.rut.util.algorithm.SortUtil; ?*h2:a$
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/** ~i ImM|*0
* @author treeroot r^,XpRe&M
* @since 2006-2-2 ,Kw]V %xOb
* @version 1.0 +IpC
*/ xesZ7{ o
public class BubbleSort implements SortUtil.Sort{ G(6MLh1
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/* (non-Javadoc) 3
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Fv(1A_~IS
*/ mzkv/
public void sort(int[] data) { r p^Gk
int temp; /9..hEq^
for(int i=0;i for(int j=data.length-1;j>i;j--){ NiCB.a
if(data[j] SortUtil.swap(data,j,j-1); !?u{2D
} 7-u['nFJ
} q!+&|F
} G^Q8B^Lg
} d} `Z| ex
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} a.O pxd
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选择排序: !uwZ%Uxz
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; [%`L sY
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/** u6#=<FD/}
* @author treeroot 6bXR?0$*M.
* @since 2006-2-2 ToVi;
* @version 1.0 ;&N=t64"
*/ vL,:Yn@b
public class SelectionSort implements SortUtil.Sort { &+v!mw >
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/* v3`k?jAaI
* (non-Javadoc) ZFNn(n
* &rmXz6F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SL O~
*/ I}S~,4
public void sort(int[] data) { 9AgTrP
int temp; X>W2aDuEZ
for (int i = 0; i < data.length; i++) { h/a|-V}m&
int lowIndex = i; /P>t3E2c
for (int j = data.length - 1; j > i; j--) { ZgP~VB0)$
if (data[j] < data[lowIndex]) { 1'G&PX
lowIndex = j; w#!^wN
} zcn/LF
} E1&9( L5
SortUtil.swap(data,i,lowIndex); 4%s6 d,6"
} p]-\\o}
} } qf=5v
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} X*^^W_LH.
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Shell排序: PS=N]e7k'
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package org.rut.util.algorithm.support; WX9ABh& 5
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import org.rut.util.algorithm.SortUtil; :47bf<w|Y
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/** Z@G[\"
* @author treeroot nH=8I~jp
* @since 2006-2-2 @g{FNXY$ m
* @version 1.0 3iI 4yg
*/ BM,]Wjfdj
public class ShellSort implements SortUtil.Sort{ %]m/fo4b
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/* (non-Javadoc) z{N~AaY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -szSA
*/ m/T3Um
public void sort(int[] data) { P~H?[
;
for(int i=data.length/2;i>2;i/=2){ ?E*;fDEC
for(int j=0;j insertSort(data,j,i); oieJ7\h]m
} 1#D &cx6
} iW
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insertSort(data,0,1); !d)Vr5x
} [K=M;$iQ
l[AQyR1+/
/** :Q=tGj\G
* @param data T|%pvTIe
* @param j [@&0@/s*t'
* @param i K|{IX^3)V
*/ I+VL~'VlS
private void insertSort(int[] data, int start, int inc) { BIk0n;Kz<L
int temp; xRI7_8Jpyn
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 8?za&v
} RZgklEU
} LrGLIt`
} =sYUzYm
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} `Nnaw+<]
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快速排序: pXy'S s@y
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package org.rut.util.algorithm.support; 5OR2\h!XZt
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import org.rut.util.algorithm.SortUtil; nhu;e}[>
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/** vR)f'+_Nz
* @author treeroot s<XAH7?0
* @since 2006-2-2 jv4O
* @version 1.0 QH d^?H*
*/ GI[TD?s
public class QuickSort implements SortUtil.Sort{ 2YbI."ob
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/* (non-Javadoc) "?X,);5S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A5\00O~
*/ `k.Tfdu)K
public void sort(int[] data) {
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quickSort(data,0,data.length-1); aob+_9o
} nZbINhls
private void quickSort(int[] data,int i,int j){ 'e(]woe
int pivotIndex=(i+j)/2; ~Oc:b>~
file://swap b4R;#rm
SortUtil.swap(data,pivotIndex,j); 3OlXi9>3
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int k=partition(data,i-1,j,data[j]); #B!HPlrv
SortUtil.swap(data,k,j); @7? O#WmL
if((k-i)>1) quickSort(data,i,k-1); Xt.ca,`U
if((j-k)>1) quickSort(data,k+1,j); #hZ`r5GvTj
7G\a5
} vmj'X>Q
/** li37*
* @param data [pRRBMho
* @param i Z^[
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* @param j Img$D*BM
* @return
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*/ 0z
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private int partition(int[] data, int l, int r,int pivot) { l"rX'g?
do{ :u9OD` D
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~z kzuh
SortUtil.swap(data,l,r); gJZH??b
} bl3?C
while(l SortUtil.swap(data,l,r); $ o
}
return l; MtD0e@
} Mp7X+o/
}`~n$OVx
} _yRD*2 !;
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改进后的快速排序: &E+mXEve
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; II'"Nkxd
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/**
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* @author treeroot jf^BEz5
* @since 2006-2-2 EvKzpxCh
* @version 1.0 rQD^O4j R
*/ OfK>-8
public class ImprovedQuickSort implements SortUtil.Sort { idNra#
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private static int MAX_STACK_SIZE=4096; k.ttrKy<q/
private static int THRESHOLD=10; jcbq#
/* (non-Javadoc) 5~[m]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |E9'ii&?B
*/ ^)UX#D3b
public void sort(int[] data) { 6Vj=SYK
int[] stack=new int[MAX_STACK_SIZE]; @GWJq
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int top=-1; gkmV;0
int pivot; 1N}vz(0"
int pivotIndex,l,r; eBWgAf.k
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stack[++top]=0; ~Z~V:~
stack[++top]=data.length-1; mIZ6[ ?
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while(top>0){ 0T7t.
int j=stack[top--]; z*UgRLKZD
int i=stack[top--]; )*XD"-9
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pivotIndex=(i+j)/2; =<%[P9y
pivot=data[pivotIndex]; 4nrn
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SortUtil.swap(data,pivotIndex,j); w,az{\
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file://partition TI|h
l=i-1; v1rTl5H
r=j; fKW)h?.Kd
do{ =NmW}x|n
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); .b?Aq^i8
SortUtil.swap(data,l,r); 5P{[8PZxbV
} b_X&>^4Dkl
while(l SortUtil.swap(data,l,r); ,M9e *
SortUtil.swap(data,l,j); bq2f?uD-}
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if((l-i)>THRESHOLD){ :8`~dj.
stack[++top]=i; 3rY\y+m
stack[++top]=l-1; T&4f}g/
} j5wfqi
if((j-l)>THRESHOLD){ b Rc,Y<
stack[++top]=l+1; j5[Y0)pV\
stack[++top]=j; $XI.`L *g
} M-Ek(K3SRf
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} edo+ o{^
file://new InsertSort().sort(data); nMK$&h,{
insertSort(data); fx-8mf3
} Z2t\4|wr:
/** f`)*bx
* @param data #W&o]FAA3y
*/
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private void insertSort(int[] data) { >=4('
int temp; J 5(^VKj
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); f^ja2.*%?
} a^8PB|G
} ' 55G:r39
} /J(vqYK"
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} Bf.iRh0Q5
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归并排序: h*R w^5,c
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package org.rut.util.algorithm.support; S:XsO9:{
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}
import org.rut.util.algorithm.SortUtil; l5 ]
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/** !1=*"H%t
* @author treeroot _RIlGs\.
* @since 2006-2-2 bZ_TW9mq
* @version 1.0 'J$@~P
*/ 9GRQ^E
public class MergeSort implements SortUtil.Sort{ ,kf.'N
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/* (non-Javadoc) RRXp9{x`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 51u\am'T
*/ @dUN3,}
public void sort(int[] data) { ?;_*8Doq-a
int[] temp=new int[data.length]; 1BEs> Sm
mergeSort(data,temp,0,data.length-1); C5~n^I|
} r6nnRN/S=
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private void mergeSort(int[] data,int[] temp,int l,int r){ $}.+}'7$
int mid=(l+r)/2; 1+gF fKq
if(l==r) return ; OLqV#i[K#9
mergeSort(data,temp,l,mid); &=x4M]t9L
mergeSort(data,temp,mid+1,r); jo^c>ur
for(int i=l;i<=r;i++){ n\M8>9c
temp=data; |lcp
(u*u
} ="5D}%
int i1=l; ,/%'""`w
int i2=mid+1; <=V{tl
for(int cur=l;cur<=r;cur++){ ^vPsp?
if(i1==mid+1) d]Y;rqjue
data[cur]=temp[i2++]; MI'"Xzp{s
else if(i2>r) Lg~C:BNF
data[cur]=temp[i1++]; C[}UQod0
else if(temp[i1] data[cur]=temp[i1++]; Fuzb4Df
else \+#EO%sN1%
data[cur]=temp[i2++]; /`l;u7RD
} }W'4(V;:
} 2lO(f+
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} zPc"r$'0U
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改进后的归并排序: P%)r4+at
6Iqy"MQuq
package org.rut.util.algorithm.support; pr,,E[
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import org.rut.util.algorithm.SortUtil; ^Fh*9[Zf$
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/** k#zDY*kj
* @author treeroot |?#JCG
* @since 2006-2-2 A[8m3L#k
* @version 1.0 E]rXp~AZm
*/ u5Vgi0}A
public class ImprovedMergeSort implements SortUtil.Sort { ZMb+sUK
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private static final int THRESHOLD = 10; Q"ZpT
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/* YR*gOTD
* (non-Javadoc) rD~/]y)t
* .wD
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `!/[9Y#H p
*/ }L)[>
public void sort(int[] data) { GTM0Qvf?
int[] temp=new int[data.length]; ;aV3j/
mergeSort(data,temp,0,data.length-1); L FkDb}
} 5h&sdzfG
aZ4?!JW .
private void mergeSort(int[] data, int[] temp, int l, int r) { ZX` \so,&,
int i, j, k; DH
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int mid = (l + r) / 2; 2t9UJu4
if (l == r) $Yt|XT+!&
return; 0M"n
if ((mid - l) >= THRESHOLD) 7;o:r$08&}
mergeSort(data, temp, l, mid); S)rr
else 60vmjm Xl
insertSort(data, l, mid - l + 1); \1jThJn
if ((r - mid) > THRESHOLD) yAryw{(
mergeSort(data, temp, mid + 1, r); jel:oy|_
else fwv^dEe
insertSort(data, mid + 1, r - mid); Vf&U`K
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for (i = l; i <= mid; i++) { 7%i'F=LzT
temp = data; o 2Nu@^+
} V!+iq*Z|=
for (j = 1; j <= r - mid; j++) { 3"7Q[9Oj
temp[r - j + 1] = data[j + mid]; ?!P0UTe~
} G;}WZy
int a = temp[l]; hHN[K
int b = temp[r]; m2\\!C]f
for (i = l, j = r, k = l; k <= r; k++) { 'RV96lX<
if (a < b) { =S`h/fru
data[k] = temp[i++]; O hk\P;}
a = temp; ?"mZb#%
} else { lc[6Mpi7s[
data[k] = temp[j--]; nsRCDUCi
b = temp[j]; dGYR
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} M; wKTTQy
} l.o/H|
} 1~c\J0h)d
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/** bRxI7 '
* @param data Ze~P6
* @param l Uv(R^50>
* @param i 0[l}@K?
*/ ZPmqoR[
private void insertSort(int[] data, int start, int len) { J:N(U0U
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); <"5l<E
} 94+^K=lAX
} q*UHzE:LI
} bW6| &P}X
} ~i"=:D
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堆排序: lH4Nbluc^
x(TF4W=j
package org.rut.util.algorithm.support; ks0Q+YW
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import org.rut.util.algorithm.SortUtil; %=UD~5!G0
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/** KMj\A
d
* @author treeroot }#FV{C]
* @since 2006-2-2 wuH*a3(
* @version 1.0 wHj1+W
*/ $&as5z8
public class HeapSort implements SortUtil.Sort{ ._G,uP$
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/* (non-Javadoc) ^YLC {V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o99ExQ.
*/ <{kPa_`'
public void sort(int[] data) { _u[tv,
MaxHeap h=new MaxHeap(); 1?Y>Xz
h.init(data); <-v
zS;
for(int i=0;i h.remove(); =HCEUB9Fs
System.arraycopy(h.queue,1,data,0,data.length); \#HW.5
} JD$g%hcVZa
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private static class MaxHeap{ Wk0E7Pr
!i;6!w
void init(int[] data){ ']1n?K=A
this.queue=new int[data.length+1]; IE`3I#v
for(int i=0;i queue[++size]=data; r%.k,FzGZY
fixUp(size); 0V1GX~2
} r@4A%ql<
} t(#9.b`W)
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private int size=0; a<<4gXx
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private int[] queue; |fgUW.
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public int get() { \jiE:Qt
return queue[1]; |SkQe[t
} OT
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I_r@Y:5{
public void remove() { Me.I>7c
SortUtil.swap(queue,1,size--); s(=wG|
fixDown(1); $X#y9<bW
} <N vw*yA
file://fixdown Vgm'&YT
private void fixDown(int k) { IEhD5?
int j; |8k1Bap`z
while ((j = k << 1) <= size) { Kv|
x
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if (j < size %26amp;%26amp; queue[j] j++; 0SI@`C*1o
if (queue[k]>queue[j]) file://不用交换 1B4Qj`:+0
break; PR@6=[|d
SortUtil.swap(queue,j,k); KR>)Ek
k = j; Iq+N0G<j
} Pf[E..HF*d
} XRV]u|w=g
private void fixUp(int k) { KW .4 9
while (k > 1) { cqG6di7#
int j = k >> 1; pp@
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if (queue[j]>queue[k]) V'i-pn2gyu
break; '#+&?6 p
SortUtil.swap(queue,j,k); 0vv~G\yM
k = j; 0nb%+],pX
} TF8#I28AD
} ^p3GT6
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} `WayR^ 9
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} ''nOXl
h$02#(RHJ
SortUtil: )=5&Q
Pu3oQDldV
package org.rut.util.algorithm; [~9UsHfH
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import org.rut.util.algorithm.support.BubbleSort; x"b'Pmw
import org.rut.util.algorithm.support.HeapSort; VhO%4[Jl
import org.rut.util.algorithm.support.ImprovedMergeSort; l!tR<$|
import org.rut.util.algorithm.support.ImprovedQuickSort; IbI0".o
import org.rut.util.algorithm.support.InsertSort; GKt."[seV
import org.rut.util.algorithm.support.MergeSort; 36=aahXd\
import org.rut.util.algorithm.support.QuickSort; (uC8M,I\
import org.rut.util.algorithm.support.SelectionSort; fu5L)P^T
import org.rut.util.algorithm.support.ShellSort; q/ljH_-
]}v]j`9m%
/** b}K,wAx
* @author treeroot pl]|yIZ
* @since 2006-2-2 KqFI2@v
* @version 1.0 {:1j>4m2
*/ BP3Ha8/X
public class SortUtil { 1wR[nBg*|
public final static int INSERT = 1; o Xm
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public final static int BUBBLE = 2; IXy6Yn9l
public final static int SELECTION = 3; KwL_ae6fV
public final static int SHELL = 4; :F:1(FDP
public final static int QUICK = 5; ?h}NL5a
public final static int IMPROVED_QUICK = 6; hN3FH#YO
public final static int MERGE = 7; r)^sHpK:`
public final static int IMPROVED_MERGE = 8; XFS~
public final static int HEAP = 9; (tg.]q_=u
0-Mzb{n5
public static void sort(int[] data) { '9}&@;-_
sort(data, IMPROVED_QUICK); i7#4&r
} &e^;;<*w
private static String[] name={ zZ%[SW&vC
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" tj13!Cc}e`
}; ,:t,$A
vJ&_-CX
private static Sort[] impl=new Sort[]{ 4}H+hk8-
new InsertSort(), 8US#SI'x
new BubbleSort(),
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new SelectionSort(), -EiTP:A
new ShellSort(), J
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new QuickSort(), h.EI(Ev"GN
new ImprovedQuickSort(), H,(vTthd
new MergeSort(), #~
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new ImprovedMergeSort(), gC1LQ!:;Oi
new HeapSort() k6bct@7
}; >$D!mraih
/yI4;:/
public static String toString(int algorithm){ OFtaOjsyUa
return name[algorithm-1]; jqaX|)8|$
} m'"r<]pB*4
Skt-5S#
public static void sort(int[] data, int algorithm) { wMVUTm
impl[algorithm-1].sort(data); $?56 i4
}
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+9Tc.3vQ
public static interface Sort { EVPQe-
public void sort(int[] data); pCE
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} B7f<XBU6>
O)q4^AE$
public static void swap(int[] data, int i, int j) { g#$ C8k
int temp = data; oP,*H6)i
data = data[j]; n6oOknCna
data[j] = temp; PBn7{( x
} v5M4Rs&t
} h*fN]k6