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。 Que)kjp
插入排序: |e+I5
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package org.rut.util.algorithm.support; aY"qEH7]
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import org.rut.util.algorithm.SortUtil; \8<bb<`
/** W]rXt,{&
* @author treeroot ef|Y2<P
* @since 2006-2-2 -|V@zSKr3
* @version 1.0 %P yU3
*/ 3 :f5xF
public class InsertSort implements SortUtil.Sort{ czedn_}%Q
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/* (non-Javadoc) _ sM$O>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *A8CJ
*/ {_Ke'"
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public void sort(int[] data) { d5bj$oH
int temp; TmO\!`
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); T0aK1Lh
} 'kYV}rq;l
} r^Gl~sX
} lW7kBCsz#
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} b Z%[ON5OY
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冒泡排序: 17nWrTxR$
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package org.rut.util.algorithm.support; 8mx5K-/,y^
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import org.rut.util.algorithm.SortUtil; Lmj?V1% V
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/** NUm3E4
* @author treeroot lr^-
* @since 2006-2-2 KnU "49
* @version 1.0 T@k&YJ
*/ t6js@Ih
public class BubbleSort implements SortUtil.Sort{ >5]Xl*{H)
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/* (non-Javadoc) m>UJ; F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !Ng^k>*h
*/ x)V.^-
public void sort(int[] data) { ZXr]V'Q?
int temp; +5^*c^C
for(int i=0;i for(int j=data.length-1;j>i;j--){ J$'T2@H#
if(data[j] SortUtil.swap(data,j,j-1); AKL~F|t
} zwAuF%U
} YS~\Gls%
}
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} .R:eN&Y8y
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} r+
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选择排序: ~\XB'
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package org.rut.util.algorithm.support; x6F\|nb
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import org.rut.util.algorithm.SortUtil; |a'Q^aT
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/** ZZlR:D
* @author treeroot :B"'49Q`
* @since 2006-2-2 Cr(pN[,
* @version 1.0
i 0L7`TB
*/ hW/*]7AM^
public class SelectionSort implements SortUtil.Sort { 8l)l9;4 6
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/* E8IWHh_
* (non-Javadoc) $\a;?>WA"
* Bt.W_p
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tD>m%1'&
*/ q9Fc0(&Vf
public void sort(int[] data) { 5X~ko>
int temp; ~|!q>z
for (int i = 0; i < data.length; i++) { )P|Ql-rE4
int lowIndex = i; ]kc_wFT<
for (int j = data.length - 1; j > i; j--) { BRH:5h
if (data[j] < data[lowIndex]) { 8N|*n"`}
lowIndex = j; u,oxUySeG
} EiT
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} Jr1^qY`0+
SortUtil.swap(data,i,lowIndex); .# M5L
} v~@Y_`l
} oNiS"\t
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} E$Ge#
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Shell排序: Ke,-8e#Q
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package org.rut.util.algorithm.support; MTqbQ69v
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import org.rut.util.algorithm.SortUtil; w7%N=hL1
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/** R~c(^.|r
* @author treeroot %\-+SeC
* @since 2006-2-2 ]enqkiS
* @version 1.0 t`DUY3>36
*/ Mzb_o2^(
public class ShellSort implements SortUtil.Sort{ ([$F5
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/* (non-Javadoc) {CGk5` g~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8YYY *>
*/ KY_qK)H
public void sort(int[] data) { .h*&$c/l
for(int i=data.length/2;i>2;i/=2){ 29GejLg|
for(int j=0;j insertSort(data,j,i); Y,)9{T
} 0@xuxm/i
} g%\e80~1 (
insertSort(data,0,1); pp{%\td
} NT8%{>F`
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/** sRoZvp5
* @param data t+h"YiT
* @param j J(l6(+8
* @param i +)7NWR\
*/ {0QA+[Yd&!
private void insertSort(int[] data, int start, int inc) { =%RDT9T.
int temp; Y ,}p
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); yp :yS
} s:fnOMv
"
} fSun{?{
} (@&|
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} _Juhl^LM;
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快速排序: 1,pg:=N9
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package org.rut.util.algorithm.support; cBm3|@7
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import org.rut.util.algorithm.SortUtil; f[ER`!
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/** {8"W
* @author treeroot :ss9-
* @since 2006-2-2 s"Kp+tTWj
* @version 1.0 7 IIM8/BI
*/ _l/6Qpf
public class QuickSort implements SortUtil.Sort{ a%-Yl%#
*:d_~B?Tn
/* (non-Javadoc) 3@}_ F<"*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JP@UvDE|
*/ 5-&P4
public void sort(int[] data) { | _S9U|
quickSort(data,0,data.length-1); C8{CKrVE
} RF6|zCWuI
private void quickSort(int[] data,int i,int j){ Dxu)by
int pivotIndex=(i+j)/2; L9AfLw5&X
file://swap Dd{{d?;B
SortUtil.swap(data,pivotIndex,j); ev+NKUi=
#Io#OG<7b
int k=partition(data,i-1,j,data[j]); ||_F
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SortUtil.swap(data,k,j); >|rL0
if((k-i)>1) quickSort(data,i,k-1); ^Cak/5^K
if((j-k)>1) quickSort(data,k+1,j); LLU>c]a
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} 9r)5d&,6
/** rAQ^:q
* @param data $~9U-B\
* @param i (
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* @param j U O[p
* @return m<076O4|`
*/ hA~}6Qn
private int partition(int[] data, int l, int r,int pivot) { D@Wm-
do{ KztF#[64W^
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); +B&FZ4'
SortUtil.swap(data,l,r); G-:DMjvN
} WK<pZ *x
while(l SortUtil.swap(data,l,r); 9GQTe1[t4
return l; GvVuF S>y
} k5PzY!N
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} mV'd9(s?
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改进后的快速排序: xbmOch}j6
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package org.rut.util.algorithm.support; _e-a>y
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import org.rut.util.algorithm.SortUtil; 2<J82(4j
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/** Ao]F_hZ
* @author treeroot 0umfC
* @since 2006-2-2 e~}+.B0
* @version 1.0
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*/ 'i@Y #F%D
public class ImprovedQuickSort implements SortUtil.Sort { Fm2t:,=
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private static int MAX_STACK_SIZE=4096; x,1&ml5
private static int THRESHOLD=10; Sa@Xh,y Z
/* (non-Javadoc) ZERd#7@m+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %8$wod6
*/ pFG~XW
public void sort(int[] data) { |Rab'9U^
int[] stack=new int[MAX_STACK_SIZE]; ]9x30UXLwD
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int top=-1; 55[K[K
int pivot; vR`KRI`{
int pivotIndex,l,r; MZ+"Arzb
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stack[++top]=0; }wUF#
stack[++top]=data.length-1; xW^<.@Agm
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while(top>0){ &2c?g1%
int j=stack[top--]; RZz] .Nx
int i=stack[top--]; C( r?1ma
8p!PR^OM@
pivotIndex=(i+j)/2; :`uo]B"
pivot=data[pivotIndex]; N
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Nd( $s[
SortUtil.swap(data,pivotIndex,j); BE m%x0y
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file://partition }ShZ4 xMz
l=i-1; MW&;{m?2(
r=j; ~o8$/%Oeb/
do{ ,v^it+Jc'
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); JY_' d,O
SortUtil.swap(data,l,r); swJwy~
} jbg@ CA*=C
while(l SortUtil.swap(data,l,r); ]V9\4#I4
SortUtil.swap(data,l,j); 8T2$0
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if((l-i)>THRESHOLD){ dFS+O;zE\
stack[++top]=i; +XIN-8
stack[++top]=l-1; !G 8SEWP
} 4+uAd"
if((j-l)>THRESHOLD){ Yt{Y)=_t
stack[++top]=l+1; 5ax/jd~}
stack[++top]=j;
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} \dCdyl6V
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} g,q&A$Wi
file://new InsertSort().sort(data); ?vk&k(FT
insertSort(data); OgzPX^q/=
} Cx@, J\rsQ
/** 'DKP-R"
* @param data Lu<'A4Q1
*/ kdF#Nm
private void insertSort(int[] data) { `5gcc7b
int temp; x JepDCUJ>
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); T{ojla(
} ]6(NeS+
} b0
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} {0[qERj"z
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} AMkjoy3+]
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归并排序: W"~G]a+
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package org.rut.util.algorithm.support; Ddu$49{S:
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import org.rut.util.algorithm.SortUtil; gsZCWT
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/** ]pFYAe ?
* @author treeroot 6 .*=1P*?
* @since 2006-2-2 ty"k
* @version 1.0 g~`UC
*/ ^6obxwVG
public class MergeSort implements SortUtil.Sort{ BG=h1ybz
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/* (non-Javadoc) F02NnF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |KkVt]ZQe9
*/ oS]XE!^M
public void sort(int[] data) { Dzp9BRS
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int[] temp=new int[data.length];
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mergeSort(data,temp,0,data.length-1); >
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} ]ErAa"?
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private void mergeSort(int[] data,int[] temp,int l,int r){ 4s3n|6 v
int mid=(l+r)/2; CjD2FnjT
if(l==r) return ; I|08[
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mergeSort(data,temp,l,mid); #LcF;1o%o2
mergeSort(data,temp,mid+1,r); 2!l)%F`
for(int i=l;i<=r;i++){ P,*R@N
temp=data; &"25a[x{B
} "y62Wo6m)
int i1=l; ]$Z aS\m
int i2=mid+1; P=V~/,>SZ!
for(int cur=l;cur<=r;cur++){ )<!y_;$A
if(i1==mid+1) 5z=;q!3
data[cur]=temp[i2++]; obY5taOw
else if(i2>r) MQLa+I,S4
data[cur]=temp[i1++]; ``0knr <
else if(temp[i1] data[cur]=temp[i1++]; XN??^1{J}]
else "S*lI^8Z!
data[cur]=temp[i2++]; @y)fR.!)1$
} F2lTDuk>C
} :Oy9`vv
v vOG]2z
} & [4Gv61
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改进后的归并排序: Un7jzAvQ
XlR.Y~
package org.rut.util.algorithm.support; 1?Wk qQ
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import org.rut.util.algorithm.SortUtil; Q]66v$
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/** +Z/Pj_.o
* @author treeroot Pij*?qmeQ
* @since 2006-2-2 : 3*(kb1)&
* @version 1.0 tP7l
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*/ P>Pw;[b>O
public class ImprovedMergeSort implements SortUtil.Sort { ^!?W!k!:V
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private static final int THRESHOLD = 10; n:' Mpux
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/* 4IIe1
.{
* (non-Javadoc) OZDnU6
* e=Kf<ZQt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sBB>O@4
*/ FG'F]fc%
public void sort(int[] data) { r+d%*Dx
int[] temp=new int[data.length]; {rf.sN~M
mergeSort(data,temp,0,data.length-1); vm
1vX;
} "0pu_
6|~N5E~SX
private void mergeSort(int[] data, int[] temp, int l, int r) { FUiEayM
int i, j, k; 0LeR#l:I
int mid = (l + r) / 2; Z;-=x p
if (l == r) |*K AqTO0
return; w+z~Mz}Vz
if ((mid - l) >= THRESHOLD) Xu2:yf4No*
mergeSort(data, temp, l, mid); Hq ]f$Q6:
else +?DP r
insertSort(data, l, mid - l + 1); tp7cc;0
if ((r - mid) > THRESHOLD) vYcea
mergeSort(data, temp, mid + 1, r); NirG99kyo
else |W:xbtPNy
insertSort(data, mid + 1, r - mid); JPRo<jt=
ZvM~]8m
for (i = l; i <= mid; i++) { MV'q_{J
temp = data; h3[^uYe
} aHuZzYQ*"j
for (j = 1; j <= r - mid; j++) { bXmX@A$#Io
temp[r - j + 1] = data[j + mid]; a=]tqV_
} N7=lSBm
int a = temp[l]; k><k|P[|
int b = temp[r]; MZZEqsD5[
for (i = l, j = r, k = l; k <= r; k++) { l`>|XUf6
if (a < b) { (_Ph{IN
data[k] = temp[i++]; !?#B*JGFS
a = temp; CD]"Q1
t}
} else { bwG$\Oe6
data[k] = temp[j--]; PFq1Zai}n|
b = temp[j]; iGlg@
} R6v~Sy&n!
} ^T2o9f
} /g(WCKva
ps[HvV"
/** t<h[Lb%{T4
* @param data {DlQTgP
* @param l Qqm'Yom%T
* @param i Dc-v`jZ@)
*/ oG{0{%*@
private void insertSort(int[] data, int start, int len) { lC|`DG-B
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ObnQ,x(
} (#KSwWo{ed
} (JenTL`%u
} rvfS[@>v
} 76epkiz;=
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堆排序: v'=$K[_
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package org.rut.util.algorithm.support; (qo
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import org.rut.util.algorithm.SortUtil; !p
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/** lrQNl^K}=
* @author treeroot ?gYQE&M !
* @since 2006-2-2 *62Cf[a
* @version 1.0 EC;R^)
*/ \D67J239E
public class HeapSort implements SortUtil.Sort{ l5P!9P
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/* (non-Javadoc) 1zIX
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )IBvm1
*/ S@4p.NMU
public void sort(int[] data) { IX+!+XC"U
MaxHeap h=new MaxHeap(); 8/gA]I
6=#
h.init(data); )@(IhU)
for(int i=0;i h.remove(); q8 &\;GK|
System.arraycopy(h.queue,1,data,0,data.length); pz4lC=H%o
} :#nfdvqm
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private static class MaxHeap{ T"IDCT'z
uSQlE=
void init(int[] data){ 8SGqDaRt
this.queue=new int[data.length+1]; |!m8JV|x
for(int i=0;i queue[++size]=data; kLE("I:7
fixUp(size); U\y:\+e l
} ly9tI-E
} ;}B6`v
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private int size=0; NdxPC~Z+
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private int[] queue; unvS `>)Np
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public int get() { Wr+/9
return queue[1]; V
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} :;Xh`br
zu_bno!
public void remove() { _9f7@@b
SortUtil.swap(queue,1,size--); yOTC>?p%
fixDown(1); TGDrTyI?y
} Yj"{aFK#u@
file://fixdown nixIKOnjC
private void fixDown(int k) { S\M+*:7
int j; KOhK#t>H@0
while ((j = k << 1) <= size) { awB+B8^s
if (j < size %26amp;%26amp; queue[j] j++; U%rEW[ j
if (queue[k]>queue[j]) file://不用交换 lJvfgP-j
break; slnvrel
SortUtil.swap(queue,j,k); B%n|%g6K|h
k = j; B=}s7$^
} J.(mg
D
} N(J'h$E
private void fixUp(int k) { 6w`.'5
while (k > 1) { ]!>tP,<`'
int j = k >> 1; H-iCaXT
if (queue[j]>queue[k]) {zIcEN$ ~
break; ##6u
SortUtil.swap(queue,j,k); Ak kth*p
k = j; tP1znJh>y
} }IRD!
} >PYc57S1c
}D]y-BbA.
} * ,Le--t
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} A'aY H`j
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A
SortUtil: Nt,:`o |
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package org.rut.util.algorithm; uCHM
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import org.rut.util.algorithm.support.BubbleSort; LGh#
import org.rut.util.algorithm.support.HeapSort; HDi_|{2^
import org.rut.util.algorithm.support.ImprovedMergeSort; SFjR SMi
import org.rut.util.algorithm.support.ImprovedQuickSort; f"-3'kqo
import org.rut.util.algorithm.support.InsertSort; GJ\bZ"vDo
import org.rut.util.algorithm.support.MergeSort; *+TO% {4
import org.rut.util.algorithm.support.QuickSort; Y)68
import org.rut.util.algorithm.support.SelectionSort; )YVs=0j
import org.rut.util.algorithm.support.ShellSort; $sFqMy
# AH gY.
/** (c
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* @author treeroot p`Ok(C_
* @since 2006-2-2 r ?<?0j
* @version 1.0 fQxlYD'peb
*/ ]tNB^
public class SortUtil { LfvNO/:,
public final static int INSERT = 1; ,(B/R8ZF~
public final static int BUBBLE = 2; emHaZhh
public final static int SELECTION = 3; QL\3|'a
public final static int SHELL = 4; e7yn"kd
public final static int QUICK = 5; /Yj; '\3
public final static int IMPROVED_QUICK = 6; pS "A{k)i
public final static int MERGE = 7; *SYuq)
public final static int IMPROVED_MERGE = 8; Ip0`R+8
public final static int HEAP = 9; "
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5Mp$u756
public static void sort(int[] data) { 0HI0/Tvu$<
sort(data, IMPROVED_QUICK); z
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} p^C$(}Yh
private static String[] name={ 7O~hA*Z
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" .[
s6x5M
}; z
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bo#?,80L}`
private static Sort[] impl=new Sort[]{ &hEkm
new InsertSort(), JSoInR1E
new BubbleSort(), ikb;,Js
new SelectionSort(), p#N2K{E
new ShellSort(), Bxf&gDwjgr
new QuickSort(), IN@ =UAc&
new ImprovedQuickSort(), \;Sl5*kr
new MergeSort(), w&Z.rB?
new ImprovedMergeSort(), fskc'%x
new HeapSort() nj#kzD[n>
}; )&[ol9+\
r.' cjUs
public static String toString(int algorithm){ o,qUf
return name[algorithm-1]; K8uqLSP '
} LYuMR,7E
_6`H`zept
public static void sort(int[] data, int algorithm) { +.a->SZ5"
impl[algorithm-1].sort(data); *iUR1V Y
} ?s]?2>p
;y;UgwAM
public static interface Sort { M1eM^m8U
public void sort(int[] data); :m0pm@
} {
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public static void swap(int[] data, int i, int j) { t;
@T~%
int temp = data; Dc3bG@K*G
data = data[j]; @Ll^ze&HI
data[j] = temp; b~;M&Y
} {tuGkRY2~
} UAds$9