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。 >fHg1d2-
插入排序: o_;pEe
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package org.rut.util.algorithm.support; 5y-8_)y8o
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import org.rut.util.algorithm.SortUtil; C$Pe<C#
/** X{KWBk.1
* @author treeroot ?g9mDe;k
* @since 2006-2-2 E)z[@Np
* @version 1.0 JA0$Fz
*/ m| 8%%E}d
public class InsertSort implements SortUtil.Sort{ $Gt1T[:QUX
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/* (non-Javadoc) *I,3,zO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `~|8eKFq!
*/ pgT XyAP{
public void sort(int[] data) { U7O]g'BP
int temp; 6&V4W"k
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \;AW/&Ea
} ~um+r],@@
} ;m6Mm`[i<
} BkfWZ O{7
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} xHEkmL`)4
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冒泡排序: 9Br2}!Ny
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package org.rut.util.algorithm.support; 8qwc]f$.w
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import org.rut.util.algorithm.SortUtil; ]}z;!D>
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/** lOp/kGmn+
* @author treeroot Z-[nHSf
* @since 2006-2-2 cy)b/4h@
* @version 1.0 2y;
|6`
*/ o%#Z
public class BubbleSort implements SortUtil.Sort{ K0B
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/* (non-Javadoc) /E>z8J$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,Nl]rmI
*/ aIaydu+ \
public void sort(int[] data) { !R,9Pg*Ey
int temp; ?3
J
for(int i=0;i for(int j=data.length-1;j>i;j--){ A6w/X`([O
if(data[j] SortUtil.swap(data,j,j-1); ~:7AHK2
}
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} =uKGh`^[
} AMqu}G
} : sIZ+3
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} w`XwW#!}@$
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选择排序: 7Cf%v`B4D
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package org.rut.util.algorithm.support; ^9T6Ix{=
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import org.rut.util.algorithm.SortUtil; !NuYx9L?L
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/** pGw|T~e%
* @author treeroot {#M=gDhbX
* @since 2006-2-2 u:H@]z(x
* @version 1.0 ]RHR> =;
*/ PHRc*G{
public class SelectionSort implements SortUtil.Sort { X'N4a
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/* Zrfp4SlZZ
* (non-Javadoc) $hB;r
* 2=tPxO')B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cnf;5/
*/ 2D-ogSIo
public void sort(int[] data) { 'R6D+Vk/
int temp; @'[w7HsJ
for (int i = 0; i < data.length; i++) { QI>yi&t
int lowIndex = i; QC>I<j&`!
for (int j = data.length - 1; j > i; j--) { 'qLk"
if (data[j] < data[lowIndex]) { z79L2lJn
lowIndex = j; |7WzTz
} uE:#m.Q
} R= HN>(U
SortUtil.swap(data,i,lowIndex); M%4o0k]E,s
} [;dWFG"f
} UNocm0!N'
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} bTC2Ya
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Shell排序: lD2>`s5
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package org.rut.util.algorithm.support; }4xxge?r
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d
import org.rut.util.algorithm.SortUtil; ]OY6.m
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/** >>krH'79
* @author treeroot Y5LESZWo
* @since 2006-2-2 G1B~?i2$ ?
* @version 1.0 G~)jk+Qq
*/ 'ntb.S)
public class ShellSort implements SortUtil.Sort{ *sf9(%j
] d| -r:4
/* (non-Javadoc) o)n8,k&nm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "Ks%!
*/ !Dkz6B*
public void sort(int[] data) { Q"8)'dL'
for(int i=data.length/2;i>2;i/=2){ 7d/wT+f
for(int j=0;j insertSort(data,j,i); n);2b\&
} # l~d
} ,: w~-
insertSort(data,0,1); [K13Jy+
} If6wkY6sR
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/** Y'/` ?CK
* @param data .^#{rk
* @param j 'N=' B<^;%
* @param i $Z10Zf=
*/ `6j?2plZ
private void insertSort(int[] data, int start, int inc) { U._ U!U
int temp; M@!Gk
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ]Ke|wRQD
} _ %&"4bm.
} )ACa0V>*p
} |NtT-T)7
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} z1!ya#,$
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快速排序: : ` F>B
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package org.rut.util.algorithm.support; KGi@H%NN
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import org.rut.util.algorithm.SortUtil; 9 )B >|#\
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/** lGG1d
* @author treeroot w,8 M
* @since 2006-2-2 l@1f L%f
* @version 1.0 sLbz@5 4
*/ KtEMH
public class QuickSort implements SortUtil.Sort{ /G[y
24 Q
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/* (non-Javadoc) y(.WK8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B>X+eK
*/ 1sc #!^Oo
public void sort(int[] data) { mm#U a/~1u
quickSort(data,0,data.length-1); TOMvJ>bF
} g/z9bOgIX
private void quickSort(int[] data,int i,int j){ 8f^URN<x
int pivotIndex=(i+j)/2; Kox~k?JK
file://swap yF0,}
SortUtil.swap(data,pivotIndex,j); Z+t?ah00
m)_1->K
int k=partition(data,i-1,j,data[j]); /UyW&]nK
SortUtil.swap(data,k,j); w0/W=!_
if((k-i)>1) quickSort(data,i,k-1); 58e{WC
if((j-k)>1) quickSort(data,k+1,j); Zy*}C,Z
3{M IBMA
} e@]cI/j
/** .e.vh:Sz
* @param data ~ezCE4^&
* @param i V<4)'UI?k9
* @param j fbuop&FN+q
* @return r@%32h
*/ mSQ!<1PM
private int partition(int[] data, int l, int r,int pivot) { W\~ZmA.
do{ 73}k[e7e
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); /Z2*>7HM8[
SortUtil.swap(data,l,r); w5n>hz_5
} 8QC:ro
while(l SortUtil.swap(data,l,r); w5|@vB/pj
return l; G#@<bg3
} w4L\@y3
7KM!\"PM
} ?!~au0
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改进后的快速排序: gP1$#KgU
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package org.rut.util.algorithm.support; BM&'3K_y
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import org.rut.util.algorithm.SortUtil; v?LJ_>hw*T
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/** BMX x(W]
* @author treeroot ;4qalxzu
* @since 2006-2-2 ZN4&:9M
* @version 1.0 _cGiuxf
#
*/ }f-rWe{gs>
public class ImprovedQuickSort implements SortUtil.Sort { 7gQt
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private static int MAX_STACK_SIZE=4096;
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private static int THRESHOLD=10; Ue,"CQ6H
/* (non-Javadoc) !h4 So4p
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) , JZ@qmQ,
*/ $(CHwG-
public void sort(int[] data) { =u;q98r
int[] stack=new int[MAX_STACK_SIZE]; sJM}p5V
~{NDtB)
int top=-1; UT{Nly8u
int pivot; HPCA,*YR`
int pivotIndex,l,r; JK_$A;Q
&P+cTN9)
stack[++top]=0; O0$ijJa|
stack[++top]=data.length-1; hR`dRbBi%
}<Me%`x"
while(top>0){ R,^FJ
int j=stack[top--]; ,*lK4?v
int i=stack[top--]; RgRcW5VxK
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pivotIndex=(i+j)/2; "R30oA#m
pivot=data[pivotIndex]; 9QX{b+}"e
f
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SortUtil.swap(data,pivotIndex,j); jcG4h/A
XqwdJND
file://partition Sv>aZ
l=i-1; ;zJ_apZ:{
r=j; [R:O'AP}@}
do{ ix/uV)]k`
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Z'j<wRf
SortUtil.swap(data,l,r); *l9Y]hinq
} eBN>|mE4N
while(l SortUtil.swap(data,l,r); 1bDc ct
SortUtil.swap(data,l,j); ]D]K_`!K
~ZDdzp>
if((l-i)>THRESHOLD){ tllg$CQ5
stack[++top]=i; b~~}(^Bg
stack[++top]=l-1; d
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} Wex4>J<`/
if((j-l)>THRESHOLD){ =VSieh
stack[++top]=l+1; s3knh&'zb
stack[++top]=j; 02+^rqIx5
} LaIif_fie^
){(cRB $
} SMy&K[hJ[
file://new InsertSort().sort(data); 4C[gW
insertSort(data); d)AkA\neWo
} w'eenIX^^
/** ;s!H
* @param data 0y1t%C075
*/ s`TBz8QO$
private void insertSort(int[] data) { +I~?8*
int temp; 6x7=0}'
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); u}h'v&"e,
} tvH)I px
} {38aaf|'/
} .5z|g@
6
qqAsh]Z
} @]7\.>)
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归并排序: 3z ry %qV=
BA5= D>T-
package org.rut.util.algorithm.support; EtcamI*`
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import org.rut.util.algorithm.SortUtil; axl?t|~I
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/** -Tt}M#W
* @author treeroot $k?L?R1
* @since 2006-2-2 2#[Y/p
* @version 1.0 N?Z?g_a8
*/ !6%mt} h
public class MergeSort implements SortUtil.Sort{ @rF\6I
u`~{:V
/* (non-Javadoc) pJ(l=a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'GyPl
*/ $5o<Mj
public void sort(int[] data) { /l`XJs
int[] temp=new int[data.length]; 9%wppNT/
mergeSort(data,temp,0,data.length-1); q8lK6p\:W
} 93dotuF
GwV FD%
private void mergeSort(int[] data,int[] temp,int l,int r){ @W,Y_8:
int mid=(l+r)/2; Y>%NuL|s
if(l==r) return ; %!S
mergeSort(data,temp,l,mid); vqHJc2yYkZ
mergeSort(data,temp,mid+1,r); I6fpXPP).
for(int i=l;i<=r;i++){ -a[{cu{
temp=data; &|4Uo5qS=Z
} LNb![Rq
int i1=l; E6gEP0b
int i2=mid+1; 2uTa}{/%
for(int cur=l;cur<=r;cur++){ ww2Qa-K
if(i1==mid+1) Ss:,#|
data[cur]=temp[i2++]; ?uN(" I
else if(i2>r) )-{~7@yqZ
data[cur]=temp[i1++]; xRUYJ=|oh
else if(temp[i1] data[cur]=temp[i1++]; >KPJ74R
else ]4yvTP3[Rm
data[cur]=temp[i2++]; X3nhqQTZ
} g2]-Q.
} O /&%`&2
$5IrM7i
} QhUraZ
@FV;5M:I
改进后的归并排序: v\eBL&WK
8iN As#s
package org.rut.util.algorithm.support; Zy%Z]dF
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import org.rut.util.algorithm.SortUtil; ,Aii>D]
Uk9g^\H<D
/** GP$Y4*y/
* @author treeroot #77UKYj2L-
* @since 2006-2-2 NjxW A&[ng
* @version 1.0 m+UdT854
*/ g@k9w{_
public class ImprovedMergeSort implements SortUtil.Sort {
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private static final int THRESHOLD = 10; \7/_+)0}'
G= cxc_9
/* l/^-:RRNKi
* (non-Javadoc) A&F4;>dms
* Y
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mmL~`i/
*/ ;Y^RF?un
public void sort(int[] data) { 81cmG`G7
int[] temp=new int[data.length]; q1Sm#_7
mergeSort(data,temp,0,data.length-1); }D+8K
} )mdNvb[*n
];;w/$zke
private void mergeSort(int[] data, int[] temp, int l, int r) { [u80-x<
int i, j, k; T6$<o\g'
int mid = (l + r) / 2; cloI 6%5r
if (l == r) ~PnpYd<2
return; J"rwWIxO*
if ((mid - l) >= THRESHOLD) uN
62>
mergeSort(data, temp, l, mid); ?<'W~Rm6n
else %
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>
insertSort(data, l, mid - l + 1); J36@Pf]h
if ((r - mid) > THRESHOLD) S(i(1Hs.
mergeSort(data, temp, mid + 1, r); sV[Z|$&Z
else Xb*_LZAU
insertSort(data, mid + 1, r - mid); h\d($Ki
M[u3]dN
for (i = l; i <= mid; i++) { 4d
G-
temp = data; "S`wwl
} vs|6ww
for (j = 1; j <= r - mid; j++) { ;;!{m(;LS}
temp[r - j + 1] = data[j + mid]; k+$4?/A
} PAV2w_X~
int a = temp[l]; ~iZF~PQ1_
int b = temp[r]; HDyZzjgG
for (i = l, j = r, k = l; k <= r; k++) { \STvBI?
if (a < b) { Qu FCc1Q
data[k] = temp[i++]; vXyo
a = temp; f+Me dc~
} else { W;dzLgc
data[k] = temp[j--]; 2gAdZE&Y
b = temp[j]; FM"BTA:C
} ~#_$?_/(
} lMez!qx,=
} 5,BkwAr+6[
y=xe<#L
/** g/Jj]X#r
* @param data OIty
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* @param l H)T# R?
* @param i 9~'Ip7X,!
*/ */dh_P<Yj
private void insertSort(int[] data, int start, int len) { "Vp:z V<S
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); -!G#")<
} -^Km}9g
} `AHNk7 t=
} Z?c=t-yqp
} X1[R*a/p
B9)qv>m
堆排序: p]|ME
1=5'R/k
package org.rut.util.algorithm.support; zRoEx1
vKf;&`^qE
import org.rut.util.algorithm.SortUtil; GnrW{o
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/** }_ :#fE
* @author treeroot 'Oy5G7^R
* @since 2006-2-2 {R!TUQ5
* @version 1.0 T>Rf?%o
*/ 5uJP)S?
public class HeapSort implements SortUtil.Sort{ .Xz"NyW
#u5;utY:F
/* (non-Javadoc) S%s|P=u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \BcJDdL
*/ ]AA*f_!
public void sort(int[] data) { 2a(yR>#
MaxHeap h=new MaxHeap(); Ldj^O9p(
h.init(data); 2]RH)W86;
for(int i=0;i h.remove(); IcA\3j
System.arraycopy(h.queue,1,data,0,data.length); bc=u1=~w
} ~K#_'Ldrd
f.84=epv
private static class MaxHeap{ xiOrk
qMdtJ(gq
void init(int[] data){ *o\Y~U-so
this.queue=new int[data.length+1]; dms:i)L2
for(int i=0;i queue[++size]=data; zV(tvt
fixUp(size); i~Ob( YIH
} 2N8sq(LK{
} <\9Ijuq}k
\
NSw<.
private int size=0; ~v(M6dz~vk
3g#=sd!0O@
private int[] queue; =']};
9Bvn>+_K
public int get() { C`~4q<W'
return queue[1]; F;&fx(
} sEJ;t0.LX
-anFt+f-
public void remove() { dYew7
SortUtil.swap(queue,1,size--); (zro7gKked
fixDown(1); ?r'TH/>
} (VXx G/E3
file://fixdown -k[tFBlw
private void fixDown(int k) { e5>5/l]jsg
int j; v6DxxE2n
while ((j = k << 1) <= size) { U>B5LU9&
if (j < size %26amp;%26amp; queue[j] j++; k5%0wHpk =
if (queue[k]>queue[j]) file://不用交换 MV;Y?%>
break; UFIAgNKl
SortUtil.swap(queue,j,k); D7_Hu'y<o
k = j; Jn@Mbl
} cM<hG:4%wX
} voej ~z+
private void fixUp(int k) { CWe>jlUQ
while (k > 1) { Zc\h15+P
int j = k >> 1; 0O['-x
if (queue[j]>queue[k]) Jyz$&jqyr'
break; L3=YlX`UL
SortUtil.swap(queue,j,k); uM#U!
k = j; J,0WQQnb
} q%kj[ZOY$]
} 7MuK/q.
o!l3.5m2d
} Xm^h5jAr
_Dcc<-.
} sg6w7fp>
oA3W
{
SortUtil: k"^t?\Q%vI
.M53, 8X
package org.rut.util.algorithm; &b@!DAwAJ
9p\wTzA
import org.rut.util.algorithm.support.BubbleSort; 1nlE3Y?AV
import org.rut.util.algorithm.support.HeapSort; 3e!Yu.q:
import org.rut.util.algorithm.support.ImprovedMergeSort; peTO-x^a-
import org.rut.util.algorithm.support.ImprovedQuickSort; fCt\2);a
import org.rut.util.algorithm.support.InsertSort; djy:
import org.rut.util.algorithm.support.MergeSort; leb^,1/D6
import org.rut.util.algorithm.support.QuickSort; zmL~]!~&
import org.rut.util.algorithm.support.SelectionSort; fBWJ%W
import org.rut.util.algorithm.support.ShellSort; 5Du>-.r
K7[AiU_I
/** y5AXL5
* @author treeroot +%le/Pg@
* @since 2006-2-2 X~)V )'R
* @version 1.0 \A3>c|
*/ x(3
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public class SortUtil { x,w`OMQ}c
public final static int INSERT = 1; 32bkouq
public final static int BUBBLE = 2; ]g8i>,G
public final static int SELECTION = 3; gM;)
public final static int SHELL = 4; Q&.IlVB[
public final static int QUICK = 5; gGI#QPT`X
public final static int IMPROVED_QUICK = 6; @^:7UI_
public final static int MERGE = 7; Z*)y.i `
public final static int IMPROVED_MERGE = 8; _sf#J|kQ
public final static int HEAP = 9; EYJ i6#
Ot2zhR )
public static void sort(int[] data) { mOz&6T<|
sort(data, IMPROVED_QUICK); p'%: M
} ~*PK080N}
private static String[] name={ uku}Mr"p
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" lEyG9Xvi
}; WK_y1(v>
GEe 0@q#YA
private static Sort[] impl=new Sort[]{ m_E[bDON
new InsertSort(), ?LV-W
new BubbleSort(), _/N'I7g
new SelectionSort(), 0x>/ 6 <<
new ShellSort(), L&DF,fWsF&
new QuickSort(), G1?0Q_RN
new ImprovedQuickSort(), _']%qd"%
new MergeSort(), 35%[DUkb
new ImprovedMergeSort(), N)vk0IM!
new HeapSort() }o!#_N0T
}; _@BRpLs:4
* Y%<b86U
public static String toString(int algorithm){ XYK1-m}2
return name[algorithm-1]; A'~%_}
} f- k|w%R@
{ /F rs*AF
public static void sort(int[] data, int algorithm) { Mf;|z0UX
impl[algorithm-1].sort(data); _Ra<|NVQh
} #4P3xa
U=&^H!LVY
public static interface Sort { 4[LLnF--
public void sort(int[] data); ElEv(>G*
} #LN5&i;s
Z92iil;t
public static void swap(int[] data, int i, int j) { ~|r'2V*
int temp = data; O ':0V
data = data[j]; $TD~k;
data[j] = temp; ~$&:NB1~q
} 9k=U0]!ch
} 7g A08M[O