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。 .`lCWeHN
插入排序: mw!F{pw
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package org.rut.util.algorithm.support; _$'ashF
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import org.rut.util.algorithm.SortUtil; \zY!qpX<
/** 9x8fhAy}4
* @author treeroot 8}[).d160
* @since 2006-2-2 4Ig;3 ^%71
* @version 1.0 Y*^[P,+J*}
*/ _w{Qtj~s|
public class InsertSort implements SortUtil.Sort{ 9Na$W:P
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/* (non-Javadoc) 9p/Bh$vJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zda 3
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*/ Uly ue
public void sort(int[] data) { uD'6mk*
int temp; 2HdC |$_+
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )UR7i8]!0
} A<{{iBEI`
} ,2q-D&)\Z
} |N2#ItBbW
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} vt8By@]:
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冒泡排序: JI}'dU>*U:
y0#2m6u
package org.rut.util.algorithm.support; %Zi} MPx
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import org.rut.util.algorithm.SortUtil; xEI%D|)<
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/** wp_0+$?s
* @author treeroot #a6iuO0I
* @since 2006-2-2 b;n[mk
* @version 1.0 a9gLg
&
*/ %v|B *
public class BubbleSort implements SortUtil.Sort{ EwN}l
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/* (non-Javadoc) d-qUtgqV86
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uFE)17E
*/ U6K|fYN`
public void sort(int[] data) { 1#x0 q:6
int temp; XSRsGTCC=
for(int i=0;i for(int j=data.length-1;j>i;j--){ qm}@!z^
if(data[j] SortUtil.swap(data,j,j-1); {FkF
} iTwm3V
P
} 7I}uZ/N
} Ac@VGT:9
} 7dWS
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} _f83-':W6
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选择排序: h{Y",7]!
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package org.rut.util.algorithm.support; 7#Ft|5$~q
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import org.rut.util.algorithm.SortUtil; [JiH\+XLPs
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/** 1zv'.uu.,
* @author treeroot :Ye !w$r
* @since 2006-2-2 `?]k{ l1R
* @version 1.0 **%37
*/ jA1+x:Wq
public class SelectionSort implements SortUtil.Sort { 3fj4%P"
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/* oR'm2d ^
* (non-Javadoc) Cdn J&N{
* [y(MCf19
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) js(pC@<q5
*/ d{?LD?,)
public void sort(int[] data) { 6P3*Z
int temp; 4?kcv59
for (int i = 0; i < data.length; i++) { i1UsIT
int lowIndex = i; l?e.9o2-
for (int j = data.length - 1; j > i; j--) { dO'(2J8
if (data[j] < data[lowIndex]) { z/-=%g >HA
lowIndex = j; #qki
} |yCMt:Hk
} M`_0C38
SortUtil.swap(data,i,lowIndex); N2G{<>=
} sJZiI}Xc
} {}9a6.V;}
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} 4#D,?eA7
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Shell排序: 6ujWNf
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package org.rut.util.algorithm.support; Rq -ZL{LR7
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import org.rut.util.algorithm.SortUtil; 0GwR~Z}Z
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/** ~N4m1s"
* @author treeroot NEs:},)o
* @since 2006-2-2 P \I|,
* @version 1.0 7V>M]
*/ mFeP9MfJ
public class ShellSort implements SortUtil.Sort{ h[ ZN+M
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/* (non-Javadoc) PT
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T{"(\X$
*/ BT$_@%ea&
public void sort(int[] data) { ib m4fa
for(int i=data.length/2;i>2;i/=2){ rv;3~'V
for(int j=0;j insertSort(data,j,i); Jm@oDME_E
} }V>T M{
} [g,}gyeS(
insertSort(data,0,1); MV"=19]
} pg.%Pdr<$
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/** *p d@.|^)m
* @param data \vNU,WO
* @param j K3C <{#r
* @param i y`Fw-!'o
*/ XW9!p.*.U
private void insertSort(int[] data, int start, int inc) { `oJ [u:b
int temp; reVgqYp{{-
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ~[: 2I
} k)u[0}
} ;S{(]K7i
} hZ3bVi)L\
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} 8L XHk l
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快速排序: zDp 2g)
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package org.rut.util.algorithm.support; b6[j%(
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import org.rut.util.algorithm.SortUtil; TC. ,V_
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/** 0YzpZW"+
* @author treeroot zi:BF60]=
* @since 2006-2-2 neh(<>
* @version 1.0 tkhCw/
*/ o
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public class QuickSort implements SortUtil.Sort{ l0]
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/* (non-Javadoc) 2:R+tn(F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H]!"Zq k
*/ v<;Md-<
public void sort(int[] data) { >7r!~+B"9'
quickSort(data,0,data.length-1); /(T?j!nPE
} l~.-e^p?
private void quickSort(int[] data,int i,int j){ _ m>b2I?
int pivotIndex=(i+j)/2; /=h` L,
file://swap ':W[ A
SortUtil.swap(data,pivotIndex,j); OB7hlW
ddo#P%sH'
int k=partition(data,i-1,j,data[j]); vy/-wP|1
SortUtil.swap(data,k,j); F/Pep?'
if((k-i)>1) quickSort(data,i,k-1); Wm|lSisY
if((j-k)>1) quickSort(data,k+1,j); M;NX:mX9
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} X.V~SeS
/** KG@8RtHsQ
* @param data ]?)TdJ`
* @param i ca}2TT&t
* @param j K#xvu1U
* @return *kVV+H<X|b
*/ X|[`P<'N<
private int partition(int[] data, int l, int r,int pivot) { V:27)]q
do{ nie% eC&U
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); K>9 ()XT)
SortUtil.swap(data,l,r); Mlq.?-QgIL
} {U1m.30n
while(l SortUtil.swap(data,l,r); i&k7-<
return l; nd(S3rct&
} ~4"dweu?
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} <1pEwI~
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改进后的快速排序: +O5hH8<&b
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package org.rut.util.algorithm.support; SzRmF1<
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import org.rut.util.algorithm.SortUtil; smLQS+UE
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/** _~pbqa,
* @author treeroot rs.M]8a2{&
* @since 2006-2-2 c)tfAD(N8x
* @version 1.0 <t,x RBk
*/ @P"p+
public class ImprovedQuickSort implements SortUtil.Sort { y==CTY@
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private static int MAX_STACK_SIZE=4096; xKC[=E>z
private static int THRESHOLD=10; D-4f.Tq4#
/* (non-Javadoc) :ivf/xn
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iX\X>W$P
*/ $g7<Y*t[
public void sort(int[] data) { \4#W xZ
int[] stack=new int[MAX_STACK_SIZE]; m`_ONm'T&
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int top=-1; MS]r:X6
int pivot; QIgNsz
int pivotIndex,l,r; `@
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stack[++top]=0; '=6\v!
stack[++top]=data.length-1; _l]fkk[T
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while(top>0){ \15nSB
int j=stack[top--]; IMfqiH)
int i=stack[top--]; V!dtF,tH
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pivotIndex=(i+j)/2; ^KELKv,_
pivot=data[pivotIndex]; veRm2LSP
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SortUtil.swap(data,pivotIndex,j); 7!$^r$t
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file://partition #u
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l=i-1; 4g7)i L^#~
r=j; ,{q;;b9
do{ EyLu O-5
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); So
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SortUtil.swap(data,l,r); {>%&(
} xRsWI!d+|
while(l SortUtil.swap(data,l,r); 'Qo*y%{@5
SortUtil.swap(data,l,j); *|E[L^
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if((l-i)>THRESHOLD){ ilva,WFa^
stack[++top]=i; ^KE%C;u
stack[++top]=l-1; hiw|2Y&`
} V#}kwON
if((j-l)>THRESHOLD){ Yir
[!{
stack[++top]=l+1; r(2uu
stack[++top]=j; ,'iE;o{Tu
} $DUZ!zaH!
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} =6#Eh=7N
file://new InsertSort().sort(data); ff1c/c/
insertSort(data); [ps*uva
} O<;3M'y\
/** HOh!Xcu
* @param data /Qk4
*/ c\V7i#u[d;
private void insertSort(int[] data) { bD8Gwi=iiu
int temp; ,<p}o\6
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @k/NY*+
} ;{o|9x|
} P_p<`sC9
} g2/8~cn8z
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} ;l-!)0U
}XM(:|8J,
归并排序: q=qcm`ce
kd$D 3S^{
package org.rut.util.algorithm.support; }k
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import org.rut.util.algorithm.SortUtil; p`#R<K
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/** VEw"
* @author treeroot 3J438M.ka
* @since 2006-2-2 gH3vk $WS
* @version 1.0 _1L![-ac
*/ h@WhNk7"xa
public class MergeSort implements SortUtil.Sort{ Ziu]'#
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/* (non-Javadoc) X<; f
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ; XN{x
*/ 4^OY
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public void sort(int[] data) { ["e3Ez
int[] temp=new int[data.length]; JNUt$h
mergeSort(data,temp,0,data.length-1); WYYa/,{9.
} Y6L~K?
kO*$"w#X[p
private void mergeSort(int[] data,int[] temp,int l,int r){ I[##2
int mid=(l+r)/2; M8b;d}XL
if(l==r) return ; t; {F%9j{
mergeSort(data,temp,l,mid); y(pks$
mergeSort(data,temp,mid+1,r); s)Cjc.Qs
for(int i=l;i<=r;i++){ -FQ 'agf@&
temp=data; zXxT%ZcCj
} .oUTqki
int i1=l; |:<f-j7t~
int i2=mid+1; !|S43i&p
for(int cur=l;cur<=r;cur++){ o/Q;f@
if(i1==mid+1) Ab"@714@
data[cur]=temp[i2++]; p\ZNy\N^
else if(i2>r) hL;(C)(
data[cur]=temp[i1++]; A_5P/ARmI
else if(temp[i1] data[cur]=temp[i1++]; 6U,O*WJ%e
else I \[_9
data[cur]=temp[i2++]; u=7J/!H7^
} ApV~(k)W
} 4X
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T7u%^xm
} }$Tl ?BRpU
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改进后的归并排序: EbE-}>7OO
0dhaAq`k
package org.rut.util.algorithm.support; c>Xs&_
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import org.rut.util.algorithm.SortUtil; !F1N~6f
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/** b@f$nS
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* @author treeroot [^e%@TV>d
* @since 2006-2-2 u5: q$P
* @version 1.0 j=aI9p
*/ JYd 'Jp8bP
public class ImprovedMergeSort implements SortUtil.Sort { VAf1 " )pC
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private static final int THRESHOLD = 10; `a/%W4
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/* w6GyBo{2O_
* (non-Javadoc) ua]o6GlO
* v+`N*\J_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TQ*1L:X7M&
*/ Oz`BEyb]{
public void sort(int[] data) { &c:Ad%
z
int[] temp=new int[data.length]; 5^lxj~ F
mergeSort(data,temp,0,data.length-1); orfO^;qTY
} Hx*;jpy(2
G) 7;;
private void mergeSort(int[] data, int[] temp, int l, int r) { ahOM CZF|
int i, j, k; \LppYXz
int mid = (l + r) / 2; <|+Ex
if (l == r) TDNQu_E
return; |J}Mgb-4
if ((mid - l) >= THRESHOLD) ]0)|7TV*
mergeSort(data, temp, l, mid); G<f@#[$'
else `[)YEgs
insertSort(data, l, mid - l + 1); .#Z%1U%P.
if ((r - mid) > THRESHOLD) !~&R"2/
mergeSort(data, temp, mid + 1, r); TXk?#G\o
else i9A+gtd
insertSort(data, mid + 1, r - mid); $lIz{ySJv
tj4VWJK
for (i = l; i <= mid; i++) { V=V:SlS9|
temp = data; ayD}r#7
} `gb5"`EZ
for (j = 1; j <= r - mid; j++) { k"]dK,,
temp[r - j + 1] = data[j + mid]; \\7ZWp\fN
} vIwCJN1C
int a = temp[l]; ?yR&/a
int b = temp[r]; b7tOo7a H)
for (i = l, j = r, k = l; k <= r; k++) { :Q_<Z@2Y{
if (a < b) { QxOjOKAG
data[k] = temp[i++]; T {Uc:Z
a = temp; B'EKM)dA
} else { rZ^v?4Z\
data[k] = temp[j--]; aKuSd3E@#
b = temp[j]; 9Z'8!$LYg
} aZ'Lx:)R
} @u%_1
} Kt|1&Gk
+H#U~p$
/** ux3<l +jv^
* @param data #x3ujJ
* @param l 3*)ig@e6
* @param i 3?Pn6J{O
*/ Ve!fU
private void insertSort(int[] data, int start, int len) { @kU@N?5e
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); pV,P|>YTf
} g[7#w,o
} xD[Gq%
} 5
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} z;wELz1L{
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堆排序: '@CR\5 @
Z(_ZAB%+D
package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; Eb>78k(3I)
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/** fpN-
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* @author treeroot aKJQm'9Ks
* @since 2006-2-2 !o+_T?
* @version 1.0 V-r3-b
*/ $aPfGZ<i
public class HeapSort implements SortUtil.Sort{ XNb ZNaAd
AT)a :i
/* (non-Javadoc) SdwS= (e6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j>/ ,$H
*/ 0{PzUIM,W
public void sort(int[] data) { ,SiY;(b=\
MaxHeap h=new MaxHeap(); -"[<ek
h.init(data); dG71*)<)t
for(int i=0;i h.remove(); !\;FNu8_.
System.arraycopy(h.queue,1,data,0,data.length); \7
NpT}dj
} 13&0rLS
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private static class MaxHeap{ T,OwM\`.X{
Z@%HvB7
void init(int[] data){ OOz[-j>'Y+
this.queue=new int[data.length+1]; 0W()lQ
for(int i=0;i queue[++size]=data; V@QK
fixUp(size); d4 (/m_HMu
} _:B1_rz7,
} !'*csg
Q9&kJ%Mo
private int size=0; @hImk`&[N
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private int[] queue; I;?X f
+/;*|
public int get() { *79m^
return queue[1]; |fY/i]
Ax
} <JwX_\?ln
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public void remove() { K!mOr
SortUtil.swap(queue,1,size--); <x),,a=X
fixDown(1); 02k4N%
} 5I@w~z
file://fixdown CCGV~e+
private void fixDown(int k) { ?<yM7O,4
int j; sW^a`VM
while ((j = k << 1) <= size) { ec|/ /
if (j < size %26amp;%26amp; queue[j] j++; Px>va01n
if (queue[k]>queue[j]) file://不用交换
`:G%
break; 5Y3i|cj
SortUtil.swap(queue,j,k); 9ElCg"
k = j; V8~jf-\$b
} nB ". '=
} 2spg?]
private void fixUp(int k) { CC3v%^81l^
while (k > 1) { fXQiNm[P
int j = k >> 1; zK+52jhi
if (queue[j]>queue[k]) NS,5/t
break; +/+P\O
SortUtil.swap(queue,j,k); 'iLH `WE
k = j; &wetzC)
} t%r :4,
} B )JM%r
jRpdft
} Us~ X9n_F
bxXiQa
} efuK
w h$jr{
SortUtil: WnAd5#G
"MiD8wX-
package org.rut.util.algorithm; h.whjiCFa
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import org.rut.util.algorithm.support.BubbleSort; Cv=GZGn-
import org.rut.util.algorithm.support.HeapSort; 7=*VpX1
import org.rut.util.algorithm.support.ImprovedMergeSort; ELh3^
import org.rut.util.algorithm.support.ImprovedQuickSort; p11G#.0
import org.rut.util.algorithm.support.InsertSort; aP>37s
import org.rut.util.algorithm.support.MergeSort; ;</Twm;:
import org.rut.util.algorithm.support.QuickSort; 5GAy "Xd
import org.rut.util.algorithm.support.SelectionSort; IdM*5Y>f
import org.rut.util.algorithm.support.ShellSort; ;' e@t8i6
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/** `HX3|w6W;
* @author treeroot I&1!v8
* @since 2006-2-2 chAan~r[*
* @version 1.0 QlW=_Ymv{
*/ M>_ = "atI
public class SortUtil { uiBTnG"
public final static int INSERT = 1; 04y!\
public final static int BUBBLE = 2; 4^!4eyQ^
public final static int SELECTION = 3; i|\{\d
public final static int SHELL = 4; 3^G96]E
public final static int QUICK = 5; J^I7BsZ
public final static int IMPROVED_QUICK = 6; Wtv#h~jy9
public final static int MERGE = 7; v29G:YQe
public final static int IMPROVED_MERGE = 8; @PcCiGZ
public final static int HEAP = 9; B[xR-6phW
_JOP[KHb
public static void sort(int[] data) { a%~yol0wO7
sort(data, IMPROVED_QUICK); TvrwVL)
} M<