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。 >eJk)qM
插入排序: 0!!pNK%(
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package org.rut.util.algorithm.support; -Qqb/y
|~rDEv3
import org.rut.util.algorithm.SortUtil; NfS0yQPx
/** 4$d|}ajH
* @author treeroot 7f[nNng
* @since 2006-2-2 az0( 54M
* @version 1.0 yBht4"\Al
*/ t3v*P6
public class InsertSort implements SortUtil.Sort{ )^g}'V=vIr
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/* (non-Javadoc) z15(8Y@2]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8r)eiERv
*/ W"VN2
public void sort(int[] data) { IS]0 3_uQ
int temp; m->
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Af
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}
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} htlsU*x
} fC]+C(*d
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} DTn=WGm)
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冒泡排序: 6SlE>b9tA
{3`#? q^o'
package org.rut.util.algorithm.support; {eqUEdC
WO^smCk
import org.rut.util.algorithm.SortUtil; +J_A*B
B2WPjhzD
/** v#YO3nD
* @author treeroot )0fQ(3oOg
* @since 2006-2-2 0MrtJNF]_O
* @version 1.0 k;;?3)!
*/ :]=Y1*L\)
public class BubbleSort implements SortUtil.Sort{ &FkKnz4IZ
;QREwT~H
/* (non-Javadoc) _BtppQIWv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >xJt&jW-
*/ '1=/G7g
public void sort(int[] data) { 7+#^:;19`
int temp; jr"yIC_
for(int i=0;i for(int j=data.length-1;j>i;j--){ n?!.r
c
if(data[j] SortUtil.swap(data,j,j-1); Xdq2 .:\
} ;=*b:y Y
} i*W8_C:S
} G*\wu&7!
} MvL%*("4b
1fViW^l_
} OtY.s\m y
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选择排序: zdU<]ge
ruB&&C6)v
package org.rut.util.algorithm.support; &=X1kQG
nHNMoA
import org.rut.util.algorithm.SortUtil; mrE^D|
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/** z})H$]: $
* @author treeroot 08yTTt76t
* @since 2006-2-2 o@EV>4e y
* @version 1.0 im*QaO%a4
*/ _
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public class SelectionSort implements SortUtil.Sort { { tim{nV
4-ZiKM
/* :==kC672
* (non-Javadoc) <W|{zAyv
* 7.8ukAud
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &AUL]:<s
*/ W_O,Kao
public void sort(int[] data) { K&D
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int temp; [~f%z(vI
for (int i = 0; i < data.length; i++) { , $78\B^
int lowIndex = i; x>&1;g2r
for (int j = data.length - 1; j > i; j--) { kx]f`b
if (data[j] < data[lowIndex]) { `(W
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lowIndex = j; $-5iwZ
} 04WKAP'c
N
} frc>0\
SortUtil.swap(data,i,lowIndex); e9k}n\t3
} 3/}=x<ui
} g#9KG
]*sXISg1
} 4LUFG
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Shell排序: 7 82NiVed
"MZVwl "E#
package org.rut.util.algorithm.support; Pt";f
]Ny. gu
import org.rut.util.algorithm.SortUtil; ~Jmn?9 3
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/** ~WR6rc
* @author treeroot jW?.>(
* @since 2006-2-2 &P[eA u
* @version 1.0 G80d!*7
*/ G?'L1g[lc
public class ShellSort implements SortUtil.Sort{ p`33`25
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/* (non-Javadoc) 7!Ym~M=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5<,}^4wWZ
*/ }"Hf/{E$_"
public void sort(int[] data) { ylmf^G@JC
for(int i=data.length/2;i>2;i/=2){ Ur?a%]
for(int j=0;j insertSort(data,j,i); ,F6i5128{
} {j ${i
} .QRQvtd.
insertSort(data,0,1); H5^'J`0\
} _4x X}Z;
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/** oBifESJ
* @param data PZeVjL?E
* @param j cDm_QYQ
* @param i F2!_Z=
*/ oPo<F5M]d%
private void insertSort(int[] data, int start, int inc) { ~O
65=8
int temp; :&&Ps4\Sq
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); z"=#<C
} bkLm]n3
} 1i$9x$4~E
} Q$iv27
6_^u}me
} H2E!A2\m
2/E3~X7
快速排序: "'^#I_*Mf
~
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package org.rut.util.algorithm.support; NVcL9"ht*@
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import org.rut.util.algorithm.SortUtil; P7 H-Dw
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/** @&83/U?
* @author treeroot HZkC3$
* @since 2006-2-2 M_Z*F!al<
* @version 1.0 &owBmpz
*/
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public class QuickSort implements SortUtil.Sort{ FxTOc@<
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/* (non-Javadoc) Y \& 4`v'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vz#rbBY*;
*/ .NiPaUzc<
public void sort(int[] data) { IgG@v9'
quickSort(data,0,data.length-1); Pi40w+/
} : \:jIP
private void quickSort(int[] data,int i,int j){ neoT\HV
int pivotIndex=(i+j)/2; s@jzu
file://swap %K\_gR}V
SortUtil.swap(data,pivotIndex,j); NMJ230?
u/hFf3
int k=partition(data,i-1,j,data[j]); L/"u,~[
SortUtil.swap(data,k,j); qCc'w8A
if((k-i)>1) quickSort(data,i,k-1); kbI:}b7H
if((j-k)>1) quickSort(data,k+1,j); <q~&g
&&+
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7scv%i
} ZgcA[P
/** di
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* @param data n,wLk./`
* @param i R1!{,*Gy
* @param j .o]vjNrd/
* @return s~6?p%
2]
*/ 0N;Pb(%7UU
private int partition(int[] data, int l, int r,int pivot) { EZ8Ih,j9
do{ z%}^9
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); v< xe(dC
SortUtil.swap(data,l,r); Y@c!\0e$
} >dUnk)7
while(l SortUtil.swap(data,l,r); WID4 {>G2
return l; THi*'D/
} %A,4vLe~6
HH&`f3
} R.Ao%VT
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改进后的快速排序: $*Njvr7
xm6=l".%z
package org.rut.util.algorithm.support; ReE6h\j
lM3UjR|@
import org.rut.util.algorithm.SortUtil; C&^"]-t
9KN75<n
/** X2 c<.
* @author treeroot u7=`u/
* @since 2006-2-2 zF[kb%o
* @version 1.0 zqh.U@
*/ xL3-(K6e
public class ImprovedQuickSort implements SortUtil.Sort { Smzy EMT
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private static int MAX_STACK_SIZE=4096; #eD@sEn
private static int THRESHOLD=10; OGw =e{
/* (non-Javadoc) 3R1v0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8_US.52V
*/ M.O3QKU4
public void sort(int[] data) { Q&}`( ]k
int[] stack=new int[MAX_STACK_SIZE]; ma)Y@Uw M
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int top=-1; 9YS &RBJu
int pivot; LE%3..
!
int pivotIndex,l,r; 9!6sf
GZ
8<#X]I_eP+
stack[++top]=0; k\8]fh)J\7
stack[++top]=data.length-1; ^
ry
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while(top>0){ h W\q
int j=stack[top--]; uO8z .
int i=stack[top--]; 6," 86
^"WrE(3
pivotIndex=(i+j)/2;
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pivot=data[pivotIndex]; |Byw]\3v
th]1>
.
SortUtil.swap(data,pivotIndex,j); :_E=&4&g
6}zargu(;
file://partition .\ K0+b;
l=i-1; lArYlR}
r=j; W9nmTz\8
do{ ltRvNXx+]
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 5]D"y Ay81
SortUtil.swap(data,l,r); wN'Q\l+
} wPdp!h7B~N
while(l SortUtil.swap(data,l,r); fgcI55&jV{
SortUtil.swap(data,l,j); u
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Y+
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if((l-i)>THRESHOLD){ {+r0Nikx_
stack[++top]=i; 8D7=]
stack[++top]=l-1; "l0z?u
} S?TyC";!
if((j-l)>THRESHOLD){ OE_;i}58
stack[++top]=l+1; #Duz|F+%
stack[++top]=j; >S/m(98
} J<J_yRg2
JtA
tG%
} 7J?`gl&C
file://new InsertSort().sort(data); yv1Z*wTpO
insertSort(data); KtH-QQDluj
} )rX["=
/** h^QicvZ
* @param data X633.]+
*/ :rr;9nMR[
private void insertSort(int[] data) { G1K72M}CW
int temp; t0t" =(d
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &)Y26*(`
} rZ}y'A
} !58j xh
} \Eqxmo
CF"u8yE
} s az<NT
<i}lP/U
归并排序: Z:51Q
s'/b&Idf8
package org.rut.util.algorithm.support; zg)-RCG
g?Jx99c;
import org.rut.util.algorithm.SortUtil; L#)F00/`
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/** ME'hN->c
* @author treeroot -1^dOG6*
* @since 2006-2-2 9k5$rK`
* @version 1.0 x""gZzJ$L
*/ ]r6S|;:
public class MergeSort implements SortUtil.Sort{ ! n@*6
Ih_2")d
/* (non-Javadoc) ZY NHVR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RE*;_DF
*/ l]:nncpns
public void sort(int[] data) { CVo2?ZQ
int[] temp=new int[data.length]; 7;]n+QRfm
mergeSort(data,temp,0,data.length-1); >\J({/ #O
} mBb;:-5
){'Ef_/R
private void mergeSort(int[] data,int[] temp,int l,int r){ i6)7)^nG
int mid=(l+r)/2; Q[5j5vry
if(l==r) return ; s+9q`k^
mergeSort(data,temp,l,mid); {& Pk$Q!
mergeSort(data,temp,mid+1,r); AHa%?wb
for(int i=l;i<=r;i++){ ZjCT * qx
temp=data; /E(319u_
} T~=r*4
int i1=l;
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int i2=mid+1; 5X8GR5P
for(int cur=l;cur<=r;cur++){ H);O. m
if(i1==mid+1) ~3,>TV
data[cur]=temp[i2++]; rUg<(/c
else if(i2>r) v$H=~m
data[cur]=temp[i1++]; @jXdQY%{
else if(temp[i1] data[cur]=temp[i1++]; /&PRw<}>_o
else '{e9Vh<x
data[cur]=temp[i2++]; ape\zZCV
} r8]y1
Om<
} !|\$|m<n
Wc6Jgpl
} 2h_XfY'3pX
0[/GEY@
改进后的归并排序: QJeL&mf
}8joltf
package org.rut.util.algorithm.support; lfle7;
p,(gv])ie
import org.rut.util.algorithm.SortUtil; 9FGe(t<
]$4DhB
/** &oU) ,H
* @author treeroot bSG}I|
* @since 2006-2-2 /Qa'\X,f3
* @version 1.0 D90.z"N\i9
*/ <%_7%
public class ImprovedMergeSort implements SortUtil.Sort { /b|V=j}W
&3@{?K
private static final int THRESHOLD = 10; "UNWbsn6Qr
"7G>
/* !Dc|g~km\
* (non-Javadoc) ~g#$'dS
* l0
Eh?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FZk=-.Hk
*/ Qru
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public void sort(int[] data) { ` FJ2
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int[] temp=new int[data.length]; Rhfx
mergeSort(data,temp,0,data.length-1); 5]c\{G
} )o=ipm[
vzXfJP
private void mergeSort(int[] data, int[] temp, int l, int r) { k}0Y&cT!rU
int i, j, k; \#yKCA';
int mid = (l + r) / 2; x>ZnQ6x~m]
if (l == r) 2#i*'.
return; y;GwMi$KI
if ((mid - l) >= THRESHOLD) uV|%idC
mergeSort(data, temp, l, mid); [iO*t,3@h
else &E/0jxM1
insertSort(data, l, mid - l + 1); cFV)zFu
if ((r - mid) > THRESHOLD) ]Yw/}GKB
mergeSort(data, temp, mid + 1, r); ZUA%ZkX=F
else [& d"Z2gK
insertSort(data, mid + 1, r - mid); q{c/TRp7
!gyEw1Re7
for (i = l; i <= mid; i++) { i&di}x
temp = data; 3g{T+c*
} aAi"
for (j = 1; j <= r - mid; j++) { .='hYe.
temp[r - j + 1] = data[j + mid]; +YX*.dW
} j,Vir"-)
int a = temp[l]; =[
+)T[
int b = temp[r]; <@](uWu
for (i = l, j = r, k = l; k <= r; k++) { OL2 b
if (a < b) { yGs:3KI
data[k] = temp[i++]; ~%D=\iE
a = temp; o3ZqPk]al
} else { aCZ7G
%Y
data[k] = temp[j--]; "J=A(w5
b = temp[j]; Y+ Qm.
} +\ZaVi
} >hFg,5 _l3
} dBeZx1Dy
U#mrbW
/** aj|gt
* @param data b]oPx8*'
* @param l M~O$,dof
* @param i P.>5`^
*/ )*m#RqLQ8
private void insertSort(int[] data, int start, int len) { |9;MP&68
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 92";?Xk
} V.?Oly
} '7ps_pz
} ][[\!og
} pN-c9n4#j
0,M1Q~u%.
堆排序: 6?uo6 I
^;DbIo\6H
package org.rut.util.algorithm.support; 5n#@,V.O/
2`V[Nb
import org.rut.util.algorithm.SortUtil; M!Wjfq
^~
[}1+=Ub
/** -6yFE- X/
* @author treeroot wS%j!|xhlV
* @since 2006-2-2 O@)D%*;v
* @version 1.0 eI:;l];G9
*/ w"/RI#7.
public class HeapSort implements SortUtil.Sort{ .0ExHcr
;z3w#fNMv
/* (non-Javadoc) T0F!0O `
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9i`sSi8
*/ #
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public void sort(int[] data) { 7TaHE
MaxHeap h=new MaxHeap(); i3usZ{_r
h.init(data); ]fb3>HOTJ
for(int i=0;i h.remove(); <7X6ULQ
System.arraycopy(h.queue,1,data,0,data.length); {klyVb
} fd&=\~1_$
W%&'EJ)62
private static class MaxHeap{ X{-[
E^X
f83Tl~
void init(int[] data){ 15L0B5(3
this.queue=new int[data.length+1]; o9 g0fC
for(int i=0;i queue[++size]=data; P{{U
fixUp(size); ^cz;UQX~}
} 4Px
} ?=^M(TA;
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private int size=0; pQ/
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private int[] queue; 1}>u Y
l;'#!hC)
public int get() { TexSUtx@$
return queue[1]; Ad'b{C%
} cJQ& #u
;xMieqz
public void remove() { @b,&b6V
SortUtil.swap(queue,1,size--); 'D1Sm&M2%e
fixDown(1); $Afw]F$
} WymBjDos:
file://fixdown ^+)q@{\8Y
private void fixDown(int k) { Wgr`)D
int j; BMlu>,
while ((j = k << 1) <= size) { 1;$8=j2
if (j < size %26amp;%26amp; queue[j] j++; UC{Tm f
if (queue[k]>queue[j]) file://不用交换 klqN9d9k
break; Y\pRk6,
SortUtil.swap(queue,j,k); g\O&gNq<)-
k = j; <>9zXbI
} 1E'/! |
} hr)CxsPoRQ
private void fixUp(int k) { #vnJJ#uI|>
while (k > 1) { #FL\9RXy
int j = k >> 1; Pu-/*Fx
if (queue[j]>queue[k]) nL[zXl
break; X|3l*FL
SortUtil.swap(queue,j,k); P
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k = j; `4N{x.N
} |loo^!I
} Edi`x5"l
c'8a)j$$+
} *gxo!F}
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} Ad@Odx=o*R
14,Pf`5Sz
SortUtil: ag
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on=I*?+R
package org.rut.util.algorithm; -<0PBl
B,Gt6cUq
import org.rut.util.algorithm.support.BubbleSort; h)746T )
import org.rut.util.algorithm.support.HeapSort; yXdJ5Me(T
import org.rut.util.algorithm.support.ImprovedMergeSort; 4\6-sL?rW
import org.rut.util.algorithm.support.ImprovedQuickSort; sivd@7r\Fa
import org.rut.util.algorithm.support.InsertSort; 7 ?O~3
import org.rut.util.algorithm.support.MergeSort; ~il{6Z+#n
import org.rut.util.algorithm.support.QuickSort; \f AL:mJ
import org.rut.util.algorithm.support.SelectionSort; uDZ$'a
import org.rut.util.algorithm.support.ShellSort; x`#|8
%%w/;o!c
/** ?<#2raH-
* @author treeroot >nnjLrI
* @since 2006-2-2 {MaFv
* @version 1.0 5}/TB_W7j
*/ ~GWn >
public class SortUtil { =c>w
public final static int INSERT = 1; X@[)jWs
public final static int BUBBLE = 2; P=j89-e
public final static int SELECTION = 3; %!>~2=Q2*
public final static int SHELL = 4; B: pIzCP
public final static int QUICK = 5; +[DL]e]@U
public final static int IMPROVED_QUICK = 6; j9=QOq
public final static int MERGE = 7; A?q9(n|A"
public final static int IMPROVED_MERGE = 8; ,;2x.We
public final static int HEAP = 9; 4ZZ/R?AiK
"^~>aVuXf
public static void sort(int[] data) { u{o!j7
sort(data, IMPROVED_QUICK); \9S&j(I
} a^*@j:[
private static String[] name={ .Fy f4^0
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Q6?}/p
}; Ikkv <uY
3']yjj(gHr
private static Sort[] impl=new Sort[]{ gGiLw5o,
new InsertSort(), `+!GoXI
new BubbleSort(), ?}N@bsl08w
new SelectionSort(), 4gTD HQP
new ShellSort(), H nRd
new QuickSort(), %mhnd):
new ImprovedQuickSort(), kW#{[,7r
new MergeSort(), amL8yb
new ImprovedMergeSort(), &DMKZMj<Q*
new HeapSort() !~{AF|2f
}; O^D$ ~
]
M.Fu>Xi
public static String toString(int algorithm){ S >P TD@
return name[algorithm-1]; axl!zu*
} g2=5IU<
tNskB`541
public static void sort(int[] data, int algorithm) { Z=sC YLm
impl[algorithm-1].sort(data); -ISI!EU$
} U$J l5[`F^
QD0upYG
public static interface Sort { *g^U=t
public void sort(int[] data); `}s$cgEG
} 6#+&_#9
Xj;nh?\u
public static void swap(int[] data, int i, int j) { xzFV]
int temp = data; #Nt?4T<
data = data[j]; -WIT0F4o;
data[j] = temp; &v+8RY^F=
} eUYd0L!
} 'vT
XR_D