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。 7Z6=e6/\
插入排序: _ox+5?>
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package org.rut.util.algorithm.support; u.GnXuax
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import org.rut.util.algorithm.SortUtil; *&NP?-E
/** w 9dkJo
* @author treeroot N[e,){v
* @since 2006-2-2 yaj dRU
* @version 1.0 >pv.,cj
*/ BO[:=x`
public class InsertSort implements SortUtil.Sort{ |./mPV r
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/* (non-Javadoc) +=3=% %?C
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6X \g7bg
*/ W;vNmg}mn
public void sort(int[] data) { = s&Rk~2b/
int temp; xa~]t<2
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); +hyOc|5
} mJSfn"b}K
} c#n
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} }s~c(sL?;
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} |b
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冒泡排序: E/zf9\
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package org.rut.util.algorithm.support; cM#rus?)+
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import org.rut.util.algorithm.SortUtil;
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/** yb`PMj j15
* @author treeroot FZHA19Kb
* @since 2006-2-2 !jj`Ht)
* @version 1.0 P%3pM*.
*/ 8z9{H
public class BubbleSort implements SortUtil.Sort{ #{cy( &cz
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/* (non-Javadoc) cLtVj2Wb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~t6q-P
*/ $^]K611w9
public void sort(int[] data) { 4b;Mb
int temp; .GrOdDK$ns
for(int i=0;i for(int j=data.length-1;j>i;j--){ `/8@Fj
if(data[j] SortUtil.swap(data,j,j-1); u^Q`xd1
} '75T2Ud
} i>m%hbAk
} %*
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} >i/jqT/
q/i2o[f'n
} b($hp%+yJ
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选择排序: I?e5h@uE
xRh 22z
package org.rut.util.algorithm.support; (S[z
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import org.rut.util.algorithm.SortUtil; G@8)3 @
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/** (80m'.X
* @author treeroot s0SzO,Vi
* @since 2006-2-2 4#$#x=:
* @version 1.0 ?
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*/ ]E`<8hRB
public class SelectionSort implements SortUtil.Sort { Pe,>ny^J1
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/* ^m>4<~/
* (non-Javadoc) ^6s im 2
* c!6D{(sfh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Itl8#LpLM
*/ l1 +l@r\
public void sort(int[] data) { f"MID6
int temp; +:MSY p
for (int i = 0; i < data.length; i++) { @Cj!MZ=T
int lowIndex = i; $RD~,<oEm
for (int j = data.length - 1; j > i; j--) { ?cV,lak
if (data[j] < data[lowIndex]) { zm_8a!.
lowIndex = j; feej'l }F
} 2dn^K3
} 7({)ou x
SortUtil.swap(data,i,lowIndex); <kn2
} -C=0Pg]ga
} `[/#,*\
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} U&^q#['
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Shell排序: 8!_jZ f8
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package org.rut.util.algorithm.support; 3jx%]S^z|
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import org.rut.util.algorithm.SortUtil; r.C6`
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/** iN;Pg_Kq
* @author treeroot xGd60"w2
* @since 2006-2-2 RT[p!xL
* @version 1.0 cx\"r
*/ .;? Bni
public class ShellSort implements SortUtil.Sort{ {U5sRM|I
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/* (non-Javadoc) dY1t3@E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :qzg?\(
*/ VPMu)1={:p
public void sort(int[] data) { &[E\2 E
for(int i=data.length/2;i>2;i/=2){ u64#,mC[*
for(int j=0;j insertSort(data,j,i); bC{4a_B
} *$Q>Om]
} iq&3S 0
insertSort(data,0,1); ipSMmpB
} +H-=`+,
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/** o_:v?Y>0
* @param data )%(ZFn}
* @param j u6|C3,!z"
* @param i M8},RR@{
*/ )GP;KUVae
private void insertSort(int[] data, int start, int inc) { \/
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int temp; U8_{MY-9}
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); hRkCB
} |$Yk)z3
} sI>w#1.m/&
} 0seCQANd
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} [|nK5(e9
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快速排序: ]c(FgYc
+R'8$
package org.rut.util.algorithm.support; PRhC1#
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import org.rut.util.algorithm.SortUtil; nrEI0E9
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/** 66=[6U9 *
* @author treeroot %4~"$kE
* @since 2006-2-2 Jqoo&T")
* @version 1.0 Yh<F-WOo2
*/ )nm+_U
public class QuickSort implements SortUtil.Sort{ 4n,&,R r#
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/* (non-Javadoc) &PMQ]B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ :jiEn
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public void sort(int[] data) { Fis!MMh.$
quickSort(data,0,data.length-1); n
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} dSDZMB sd
private void quickSort(int[] data,int i,int j){ u8f\)m
int pivotIndex=(i+j)/2; \0\ O/^W0
file://swap >S5J^c
SortUtil.swap(data,pivotIndex,j); pW]j.JM
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int k=partition(data,i-1,j,data[j]); }k-V(
SortUtil.swap(data,k,j); axQ>~vWN/
if((k-i)>1) quickSort(data,i,k-1); '6N)sqTR
if((j-k)>1) quickSort(data,k+1,j); j >k
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} /@LkH$
/** ing'' _
* @param data :6Ri% Nb
* @param i /|EdpHx0
* @param j 4D65VgVDM
* @return 1*O|[W
*/ 0]d;)_`@
private int partition(int[] data, int l, int r,int pivot) { [YvS#M3T
do{ M9"Bx/
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); U9
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SortUtil.swap(data,l,r); H,>
}t
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} J*@ pM
while(l SortUtil.swap(data,l,r); J""Cgf
return l; lm`*x=x
} 54$^ldD
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} ,%pCcM)
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改进后的快速排序: >.<VD7p
6[m~xegG
package org.rut.util.algorithm.support; H/a gt
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import org.rut.util.algorithm.SortUtil; z}vT8qoX
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/** W8W7<ml0A
* @author treeroot Bii'^^I;?
* @since 2006-2-2 !vz'zy)7
* @version 1.0 EjP;P}_iK
*/ 6,t6~Uo/
public class ImprovedQuickSort implements SortUtil.Sort { & SXw=;B
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private static int MAX_STACK_SIZE=4096; 7?dWAUF
private static int THRESHOLD=10; O-,
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/* (non-Javadoc) * +
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ! ._q8q\
*/ BJ
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public void sort(int[] data) { :zL)O
int[] stack=new int[MAX_STACK_SIZE]; ,{*g
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int top=-1; UyGo0POW
int pivot; 45~x
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int pivotIndex,l,r; l b(
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stack[++top]=0; bQ*yXJ^8
stack[++top]=data.length-1; 4\z@Evm
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while(top>0){ qda 2
int j=stack[top--]; BA\aVhmx
int i=stack[top--]; t<rIg1
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pivotIndex=(i+j)/2; fD!c t; UK
pivot=data[pivotIndex]; G)vNMl
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SortUtil.swap(data,pivotIndex,j); lY,^
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file://partition f-~Y
l=i-1; ~[CFs'`(2
r=j; ;L-=z]IR,
do{ Sz5t~U=G
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); o\8?CNm1(
SortUtil.swap(data,l,r); /
} 9=j9vBV
while(l SortUtil.swap(data,l,r); \ eHOHHAGW
SortUtil.swap(data,l,j); ZSf &M
^50dF:V(1
if((l-i)>THRESHOLD){ TFXBN.?9T
stack[++top]=i; Lu#q o^
stack[++top]=l-1; ,z&S;f.f
} <rzP
if((j-l)>THRESHOLD){ 1Vpti4OmU
stack[++top]=l+1; rC8p!e.yL
stack[++top]=j; GxdAOiq;
} &nEL}GM)E
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} ]p! {
file://new InsertSort().sort(data); xXJ*xYn"}
insertSort(data); xsa`R^5/c
} FWbp;v{
/** Z6I|Y5#H
* @param data U F"%FF
*/ vF^d40gV
private void insertSort(int[] data) { s#?ZwD,=
int temp; sK2N3B&6
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -6[DQB
}
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} R"W}\0k
}
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} =WTSaC
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归并排序: J,}h{-Xy`
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package org.rut.util.algorithm.support; m. pm,
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import org.rut.util.algorithm.SortUtil; w/|&N>ZOx
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/** 5Zq
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* @author treeroot l<6GZ
* @since 2006-2-2 >.meecE?Q
* @version 1.0
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*/ c}(H*VY2n
public class MergeSort implements SortUtil.Sort{ Z- feMM
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/* (non-Javadoc) b,'O|s]"Sc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 01A{\O1$j
*/ `
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public void sort(int[] data) { 8w5}9}xF
int[] temp=new int[data.length]; ]oP1c-GEk
mergeSort(data,temp,0,data.length-1); !|[rh,e]
} ;1(^H:7T
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private void mergeSort(int[] data,int[] temp,int l,int r){
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int mid=(l+r)/2; >~o-6g
if(l==r) return ; GK$[ !{w;
mergeSort(data,temp,l,mid); TUfj\d,
mergeSort(data,temp,mid+1,r); v0DDim?cc
for(int i=l;i<=r;i++){ /p
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temp=data; bWTfP8gT
} aqON6|6K
int i1=l; ) H,Xkex
int i2=mid+1; = wz}yfdrC
for(int cur=l;cur<=r;cur++){ g~DuK|+
if(i1==mid+1) | N/d}
data[cur]=temp[i2++]; httywa^
else if(i2>r) v]k-xn|$j
data[cur]=temp[i1++]; a0|hLqI
else if(temp[i1] data[cur]=temp[i1++];
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else ea=E/HR-
data[cur]=temp[i2++]; _,drOF|e
} hU$aZ
} gGrVpOzBj
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} t]HY@@0g
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改进后的归并排序: "<iH8MzZ
iVFOOsJ@
package org.rut.util.algorithm.support; Cx TAd[az
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import org.rut.util.algorithm.SortUtil; flCT]ZR
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/** FCt<h/
* @author treeroot kyHli~Nr"
* @since 2006-2-2 Rzd`MIHDp
* @version 1.0 mi=mwN%UB
*/ NzT
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public class ImprovedMergeSort implements SortUtil.Sort { `G$>T#Dq
BA h'H&;V
private static final int THRESHOLD = 10; ei5YxV6I
}5+^
/* H~FI@Cf$L
* (non-Javadoc) 3X gJZ
* 2F2Hl
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DZqPCMz)^
*/ k!Yc_ZB:*l
public void sort(int[] data) { pA!-spgX
int[] temp=new int[data.length]; owIpn=8|Q
mergeSort(data,temp,0,data.length-1); C~2!@<y
} p]kEH\
sh
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private void mergeSort(int[] data, int[] temp, int l, int r) { ?F05BS#)X
int i, j, k; KZ 5%q.
int mid = (l + r) / 2; iM!2m$'s
if (l == r) i)x0]XF
return; b<tV>d"Fv
if ((mid - l) >= THRESHOLD) |u>V>
PN
mergeSort(data, temp, l, mid); ~uhW~bT
else `jeATxWv
insertSort(data, l, mid - l + 1); uZld9u
if ((r - mid) > THRESHOLD) FtTq*[a
mergeSort(data, temp, mid + 1, r); i%o%bib#
else rn-bfzoDS
insertSort(data, mid + 1, r - mid); NO~G4PUM0C
] hT\"5&6
for (i = l; i <= mid; i++) { 5M>h[Q"R
temp = data; j-9)Sijj{
} cM%?Ot,mK"
for (j = 1; j <= r - mid; j++) { )^(gwE
temp[r - j + 1] = data[j + mid]; /5sn*,
} {8.Zb NEJ
int a = temp[l]; >J;TtNE:
int b = temp[r]; z@`o(gh
for (i = l, j = r, k = l; k <= r; k++) { ^os_j39N9
if (a < b) { af|h4.A
data[k] = temp[i++]; FGn"j@m0
a = temp; /bykIUTKI
} else { ]zYIblpde
data[k] = temp[j--]; <,:{Q75
b = temp[j]; ^0zfQu+!
} 5'set?
} |&4A"2QN
} 7L
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/** |Z>-<]p9g
* @param data i"V.$|,
* @param l )5@P|{FF
* @param i ykC3Z<pI.
*/ o<5`uV!f
private void insertSort(int[] data, int start, int len) { [3X\"x5@V
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); }F]Z1('
} _WNbuk0
} byI"
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} %1
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} 6'r;6T *
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堆排序: 'ayb`
i@9
qp?eb
package org.rut.util.algorithm.support; 45 ^ Z5t
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import org.rut.util.algorithm.SortUtil; A
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/** /%cDX:7X
* @author treeroot *Hx*s_F
* @since 2006-2-2 FF#Aq
* @version 1.0 IFBt#]l0
*/ )M<+?R$];
public class HeapSort implements SortUtil.Sort{ mP*$wE9b,:
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/* (non-Javadoc) |-ZML~2S=h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vP,pK=5
*/ Zd-qBOB2L
public void sort(int[] data) { d*|RFU
MaxHeap h=new MaxHeap(); fuj9x;8X0
h.init(data); L--
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for(int i=0;i h.remove(); 9"^ib9M
System.arraycopy(h.queue,1,data,0,data.length); Tbm
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} Osz=OO{
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private static class MaxHeap{ Y-})/zFc
X QLP|v;"
void init(int[] data){ PV\J]
|d,%
this.queue=new int[data.length+1]; {-I+
for(int i=0;i queue[++size]=data; j)/Vtf
fixUp(size); jvQ^Vh!mC
} |]<#![!h#
} 6Mk#) ebM
9gA@D%0
private int size=0; ~U w<e~
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private int[] queue; KAZ<w~55c
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public int get() { (^W}uDPCB
return queue[1]; cS Lj\'`b
} q5r7KYH{
q+[ )i6!?
public void remove() { .=YV
SortUtil.swap(queue,1,size--); g5#LoGc
fixDown(1); +FNGRL
} ;uAh)|;S#
file://fixdown 1^^{;R7N
private void fixDown(int k) { jS]Saqd
int j; Xj]9/?B?
while ((j = k << 1) <= size) { \
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if (j < size %26amp;%26amp; queue[j] j++; I+Fy)=DO9
if (queue[k]>queue[j]) file://不用交换 p[&Jl
break; S8qg"YR
SortUtil.swap(queue,j,k); }Nn+Ny
k = j; ,]\cf
} P8=|#yCi
} `ZL^+h<b>M
private void fixUp(int k) { F~=kMQO
while (k > 1) { D)G oWt
int j = k >> 1; \\EX'L
if (queue[j]>queue[k]) 9Avj\G
break; Z5'^Hj1,
SortUtil.swap(queue,j,k); a4uy}@9z
k = j; :V6
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} LS*L XC
} zq+2@"q
nN$.^!;&
} }s?3
@ *Jbp
} o,j_eheAM
4w|t|?
SortUtil: 2wO8;wiA
?IeBo8
package org.rut.util.algorithm; t$qIJt$
PJ:!O?KVq
import org.rut.util.algorithm.support.BubbleSort; j+'ua=T3
import org.rut.util.algorithm.support.HeapSort; O:I]v@
import org.rut.util.algorithm.support.ImprovedMergeSort; *# <%04f
import org.rut.util.algorithm.support.ImprovedQuickSort; \
P6 !
import org.rut.util.algorithm.support.InsertSort; 7>im2"zm
import org.rut.util.algorithm.support.MergeSort; %_n%-Qn
import org.rut.util.algorithm.support.QuickSort; ?`OFn F,K
import org.rut.util.algorithm.support.SelectionSort; (ID%U
import org.rut.util.algorithm.support.ShellSort; -`ljKp
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/** vg?(0Gasm*
* @author treeroot hwk] ;6[
* @since 2006-2-2 M%54FsV
* @version 1.0 W`LG.`JW
*/ \="U|LzG
public class SortUtil { :BR_%$
public final static int INSERT = 1; O6e$v I@
public final static int BUBBLE = 2; J|jvqt9C
public final static int SELECTION = 3; % dFz[b
public final static int SHELL = 4; a(IE8:yU`
public final static int QUICK = 5; uUS~"\`fk
public final static int IMPROVED_QUICK = 6; ;R&W#Q7>3
public final static int MERGE = 7; ?$)a[UnqX
public final static int IMPROVED_MERGE = 8; <9H3d7%
public final static int HEAP = 9; Q7pCF,;
vD2(M1Q
public static void sort(int[] data) { S7j(4@
sort(data, IMPROVED_QUICK); `[E-V
} {pi_yr3
private static String[] name={ U`N?<zm<oO
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" e`a4Gr
}; CUdpT$ $x3
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|
private static Sort[] impl=new Sort[]{ _3u3b/%J?
new InsertSort(), '/D2d
new BubbleSort(), BbFLT@W4
new SelectionSort(), QDJ#zMxFD
new ShellSort(), o *U-.&
new QuickSort(), >&>EjK4?
new ImprovedQuickSort(), XRM/d5
new MergeSort(), Jo8fMG\P
new ImprovedMergeSort(), G \a`F'Oo
new HeapSort() })8D3kzX)
}; Qd~7OH4Lp
[V
/f{y~{
public static String toString(int algorithm){ KBi(Ns#+
return name[algorithm-1]; %q r,Ssa/
} <:(;#&<
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public static void sort(int[] data, int algorithm) { 2T%sHp~qt
impl[algorithm-1].sort(data); 'rXf
} NH5sV.vvc
N DI4EA~z
public static interface Sort { qoT&N,/
public void sort(int[] data); hX,RuI
} 5s%e9x|kP
cJ?,\@uuP
public static void swap(int[] data, int i, int j) { F W2x
int temp = data; (!m6>m2
data = data[j]; < j
data[j] = temp; 4uE)*1
} :Eh}]_
} GXLh(d!C