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。 #- hYjE5
插入排序: &hb:~>
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package org.rut.util.algorithm.support; ZfYva(zP{Q
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import org.rut.util.algorithm.SortUtil; *6trK`tx^
/** /X_g[*]?
* @author treeroot `pzXh0}|
* @since 2006-2-2 H=j&uv8
* @version 1.0 DZI:zsf;5Q
*/ |3A/Og
public class InsertSort implements SortUtil.Sort{ oSOO5dk:z
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/* (non-Javadoc) ,>rr|O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Rr|&~%#z
*/ {:;599l
public void sort(int[] data) { wtY*{m2
int temp; D+ )R_
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =E?!!EIq.
} (ugB3o
} C\B&'+uR
} :7w^2/ZGo
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} vxRy7:G"
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冒泡排序: q{?ku!cL
?Q]{P]
package org.rut.util.algorithm.support; Gx]J6Z8
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import org.rut.util.algorithm.SortUtil; lj4D:>Ov
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/** 1j7sJ" *
* @author treeroot ?/@~d
* @since 2006-2-2 ?{OB+f}Mo
* @version 1.0 A@kp`-
*/ .%pbKi
`
public class BubbleSort implements SortUtil.Sort{ $YX\&%N
'F- wC!
/* (non-Javadoc) lbCTc,xT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vg0$5@
*/ q@}eYQ=P|e
public void sort(int[] data) { !e}LB%zf
int temp; JToc("V
for(int i=0;i for(int j=data.length-1;j>i;j--){ &GC`4!H
if(data[j] SortUtil.swap(data,j,j-1); dvAvG.;U
} .UUY9@
} $~[k?D
} Sj$XRkbj:
} Uo!#p'<w)p
H |1owmbD
} FOFZ/q
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选择排序: $&@L[[xl
$
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package org.rut.util.algorithm.support; 4|9c+^%^
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import org.rut.util.algorithm.SortUtil;
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/** lAxbF
* @author treeroot 0
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* @since 2006-2-2 nnV(MB4z1
* @version 1.0 kXmnLxhS/
*/ hf/6VlZ
public class SelectionSort implements SortUtil.Sort { ~qG`~/7
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/* =lzRx%tm
* (non-Javadoc) a5v}w7vL
* TfD]`v`]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B} %B4&Ij
*/ .KA){_jBp
public void sort(int[] data) { #sn2Vmi
int temp; ! f\q0Gnl
for (int i = 0; i < data.length; i++) { PfaBzi9?f
int lowIndex = i; J;K-Pv+
for (int j = data.length - 1; j > i; j--) { JP2zom
if (data[j] < data[lowIndex]) { |hp_<F9.
lowIndex = j; \BV$p2m5-
} Q]Ymv:M,
} &B</^:
SortUtil.swap(data,i,lowIndex); S}/?Lm}
} ;^q@w
} *nv%~t
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} :
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Shell排序: T+O Qa+E@P
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package org.rut.util.algorithm.support; e;y\v/A
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import org.rut.util.algorithm.SortUtil; X*'tJN$
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/** D;pfogK @
* @author treeroot v&hQ;v
* @since 2006-2-2 Q-3o k7
* @version 1.0 h}X^
*/ R. sRH/6
public class ShellSort implements SortUtil.Sort{ ;b(*Bh<
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/* (non-Javadoc) vo9DmW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1}moT#
*/ 3fS+,>s\O
public void sort(int[] data) { xQ[~ c1
for(int i=data.length/2;i>2;i/=2){ "ooq1
0P
for(int j=0;j insertSort(data,j,i); r[
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} 3yWu-U \k
} As&=Pb9
insertSort(data,0,1); k3[%pS
} 0w0\TWz*
*o}LI6_u
/** q~[@(+zP5
* @param data p)5j~Nl
* @param j W| z
djb
* @param i Zc_%hQf2A
*/ -6URM`y'j
private void insertSort(int[] data, int start, int inc) { 2S~cW./#fX
int temp; t%
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for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); %h)6o99{wF
} z=}@aX[
} BT|5"b}
} Q>jx`68'KI
9] i$`y
} K.y2 $b/
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快速排序: pvCf4pf~
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package org.rut.util.algorithm.support; PGaB U3
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import org.rut.util.algorithm.SortUtil; i+x$Y)=
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/** [^rT: %Z
* @author treeroot X@;o<2^
* @since 2006-2-2 v8
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* @version 1.0 > 3<P^-9L
*/ ,/d
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public class QuickSort implements SortUtil.Sort{ ' }G!D
W'3&\}
/* (non-Javadoc) _0~WT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]}KoW?M
*/ aR3R,6ec
public void sort(int[] data) { av-l_iE
quickSort(data,0,data.length-1); {s=n "*Qp)
} s:_M+_7_
private void quickSort(int[] data,int i,int j){ 2~:jg1
int pivotIndex=(i+j)/2; E5-f{Qc
file://swap v9<7= D&x
SortUtil.swap(data,pivotIndex,j); 8db J'
f L @rv
int k=partition(data,i-1,j,data[j]); K+9oV[DMs
SortUtil.swap(data,k,j); .AEOf0t
if((k-i)>1) quickSort(data,i,k-1); ZG=B'4W
if((j-k)>1) quickSort(data,k+1,j); 'S_kD! BO
]}4{|& e
} wv.FL$f[@
/** !ke_?+8sY
* @param data l>l)m-;O
* @param i aNZJs<3;'D
* @param j -&4W0JK9
* @return yv.Y-c=
*/ eBZa9X$
private int partition(int[] data, int l, int r,int pivot) { cY%[UK $l
do{ XkB^.[B
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 'dE G\?v9
SortUtil.swap(data,l,r); q+A^JjzT
} 'ZyHp=RN)
while(l SortUtil.swap(data,l,r); q4].C|7
return l; tTWeOAF
} ,XD'f
0((3q'[ <
} #41fRmzC
kOv2E]
改进后的快速排序: deD%E-Ja
r"yA=d'c
package org.rut.util.algorithm.support; xM ]IU
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4vri=P 2%
import org.rut.util.algorithm.SortUtil; q3+G
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/** :K%{?y
* @author treeroot 9fk@C /$
* @since 2006-2-2 2C9wOO
* @version 1.0 tBDaFB
*/ q#fj?`k
public class ImprovedQuickSort implements SortUtil.Sort { #+mt}w/
m$T?~oo
private static int MAX_STACK_SIZE=4096; it=4cHT
private static int THRESHOLD=10; }*WNrS">S
/* (non-Javadoc) aq~g54
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )` nX~_'p
*/ g.AMCM?z
public void sort(int[] data) { )@-v6;7b0
int[] stack=new int[MAX_STACK_SIZE]; _%g}d/v}pO
UQGOCP_
int top=-1; "][MCVYP
int pivot; UjmBLXz@T
int pivotIndex,l,r; y`"~zq0D
~7Ji+AJA
stack[++top]=0; @"BvyS,p
stack[++top]=data.length-1; T*,kBJ
*/=5m]
while(top>0){ a );>
int j=stack[top--]; f/spJ<B).4
int i=stack[top--]; [Z2:3*5r.
+Eil:Jz
pivotIndex=(i+j)/2; I]qml2
pivot=data[pivotIndex]; +r7uIwi$@
|ITSd%`3_
SortUtil.swap(data,pivotIndex,j);
z^s40707x
l_ycYD$ZA
file://partition O34'c_ fZ
l=i-1; AJ'YkSg
r=j; iI_ad7,u
do{ l3Vw?f
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); f_`gUMf
SortUtil.swap(data,l,r); mZ;W$y SO
} zWiMl.[
while(l SortUtil.swap(data,l,r); 7%p[n;-o&
SortUtil.swap(data,l,j); i
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=^.f)
if((l-i)>THRESHOLD){ tw.2h'D
stack[++top]=i; > QwZt
stack[++top]=l-1; 1:-^*
} __U;fH{c
if((j-l)>THRESHOLD){ !^Mk5E (
stack[++top]=l+1; I!(.tu6u6c
stack[++top]=j; TNs0^h)
} [@Hv,
{^TV Zdw
} Pb0+z=L
file://new InsertSort().sort(data); +PC<#
insertSort(data); K&(}5`H0=
} "yR56`=
/** :3qA7D }
* @param data &1hJ?uM01
*/ $y!k)"k
private void insertSort(int[] data) { NB]T~_?]*
int temp; 7g(,$5
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;6N@raP7
} 6d~[M y
} \tc`Aj%K
} &FrW(>2
)A]E:]2
} 8Z;wF
h.Cr;w,2R
归并排序: 0{ovLzW
*uYnu|UQH
package org.rut.util.algorithm.support; q2VQS1R`8
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import org.rut.util.algorithm.SortUtil; OtuOT=%
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/** <UJgl{-
* @author treeroot ?>lvV+3^`
* @since 2006-2-2 'T54k
* @version 1.0 Y21,!$4gb
*/ sY?pp
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public class MergeSort implements SortUtil.Sort{ owA3>E5t&
846j<fE
/* (non-Javadoc) c nAwoTt4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'U<-w$!f+^
*/ {;4AdZk
public void sort(int[] data) { &&e{ 9{R
int[] temp=new int[data.length]; EK:!.Fl
mergeSort(data,temp,0,data.length-1); 9wLV\>i[k
} J~z;sTR
7)zn[4v7qt
private void mergeSort(int[] data,int[] temp,int l,int r){ ]Xcqf9k
int mid=(l+r)/2; "rz|sbj
if(l==r) return ; y}jX/Ln
mergeSort(data,temp,l,mid); Va"_.8n|+
mergeSort(data,temp,mid+1,r); H27J kZ&
for(int i=l;i<=r;i++){ zuOx@T^
temp=data; ARYqX\-e
} 41%B%K*
int i1=l; ^n5[pF}Gw
int i2=mid+1; 2Up1
FFRx
for(int cur=l;cur<=r;cur++){ $rf4h]&<
if(i1==mid+1) dbGW`_zQ4
data[cur]=temp[i2++]; ]E90q/s@c
else if(i2>r) 84[T!cDk
data[cur]=temp[i1++]; T2#
W=P
else if(temp[i1] data[cur]=temp[i1++]; %-@`|
else (j-[m\wF
data[cur]=temp[i2++]; L{$ZL &
} >b;fhdd:4
} gBRhO^Sz
)f4D2c&VE
} {N+N4*
F,#)8>O
改进后的归并排序: Yo:l@(
8:,E=swe
package org.rut.util.algorithm.support; -A}*Aa'\
P/._ tQu6
import org.rut.util.algorithm.SortUtil; y|!%C-P
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/** &F"Mkyf
* @author treeroot Y>-|`2Z
* @since 2006-2-2 po_||NIY
* @version 1.0 4%O*2JAw
*/ 0 1[LPN
public class ImprovedMergeSort implements SortUtil.Sort { _xign 3
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private static final int THRESHOLD = 10; s)%RmsdL
07-S%L7Z
/* <^VZ4$j
* (non-Javadoc) HBYqqEO
* "HFS5Bj'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +M%i3A
*/ -!(
public void sort(int[] data) { *W q{ :k
int[] temp=new int[data.length]; S1^u/$*6
mergeSort(data,temp,0,data.length-1); XtfO;`
} 9&5\L
@YmD 79
private void mergeSort(int[] data, int[] temp, int l, int r) { We3*WsX\
int i, j, k;
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int mid = (l + r) / 2; Nd/iMV6V;
if (l == r) ?iG}Qj@5
return; SV .\B
if ((mid - l) >= THRESHOLD) POTW+Zq]
mergeSort(data, temp, l, mid); haW8zb0z
else :qy`!QPUm
insertSort(data, l, mid - l + 1); }gL9G
if ((r - mid) > THRESHOLD) l5S(xQ
mergeSort(data, temp, mid + 1, r); UwY <3ul
else 'X{cDdS^
insertSort(data, mid + 1, r - mid); +uW$/_Y$
N)A?*s'v~
for (i = l; i <= mid; i++) { qWe1`.o
temp = data; CtVY;eG
} o9M[Zr1@k
for (j = 1; j <= r - mid; j++) { ''!pvxA
temp[r - j + 1] = data[j + mid]; VP=(",`
} 4 8M)A
int a = temp[l]; xI'<4lo7Z
int b = temp[r]; \/4ipU.
for (i = l, j = r, k = l; k <= r; k++) { w\=zTHo88
if (a < b) { ;nG"y:qq
data[k] = temp[i++]; ]@1YgV
a = temp; XhFa9RC
} else { ke|v|@
data[k] = temp[j--]; (5{ |']G
b = temp[j]; I jN3 jU
} ';??0M
} 1Nx.aji
} vTjgW?9
R|H9AM
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/** <5/r
* @param data m}0US;c#f
* @param l OlhfBu)~
* @param i PRl\W:_t
*/ ed*Cx~rT
private void insertSort(int[] data, int start, int len) { joDnjz=
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 6cSMKbgZJ
} zfL$z,zgf
} b].:2
} H[V^wyi'z
} hNc;,13
i0,{*LD%^
堆排序: ?ECmPS1
T^NY|Y/
package org.rut.util.algorithm.support; ,5'LbO-
oM-{)rvQd
import org.rut.util.algorithm.SortUtil; &/R@cS6}'
C.s{&
/** @/yRE^c
* @author treeroot lDV8<
* @since 2006-2-2 [6BLC{2
* @version 1.0 ;6t>!2I>C
*/ PC/fb-J
public class HeapSort implements SortUtil.Sort{ KgVit+4u/
GmtMA|
/* (non-Javadoc) 2.}<VivT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `3kE$h#
*/ Y\BB;"x1
public void sort(int[] data) { 'T7JXV5
MaxHeap h=new MaxHeap(); RGhl`;
h.init(data); m\7-/e2a
for(int i=0;i h.remove(); #h ;j2
System.arraycopy(h.queue,1,data,0,data.length); WM: ~P$%cx
} 2 8SlFu?
F/ 2@%,2n
private static class MaxHeap{ hSaS2RLF
9:A>a3KOH
void init(int[] data){ '*!R
gbj;
this.queue=new int[data.length+1]; I!jSAc{
for(int i=0;i queue[++size]=data; M! gX4
fixUp(size); mc|T}B
} x+|Fw d
} '0X!_w6W
Q l%7wrK
private int size=0; F^_d8=67h
/V~L:0%
private int[] queue; P~_CDh.N
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public int get() { 9 f-T>}
return queue[1]; swG^L$r`
} x`PIJE
J[YA1
public void remove() { v6oPAqj,r
SortUtil.swap(queue,1,size--); CB_(9T72H
fixDown(1); :tdx:
} VbM5]UT/
file://fixdown /}2
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private void fixDown(int k) { >?'q P ]
int j; zJI/j
_~W
while ((j = k << 1) <= size) { ,.]e~O4R
if (j < size %26amp;%26amp; queue[j] j++; Y:^ =jV7
if (queue[k]>queue[j]) file://不用交换 !W^2?pqN
break; X~0l1 @!
SortUtil.swap(queue,j,k); kR^7Z7+#*
k = j; Y@KZ:0<
} nX5*pTfjL3
} &Xe r#6~
private void fixUp(int k) { jCW>=1:JGY
while (k > 1) { (&PamsV*8
int j = k >> 1; 'nP'MA9b;a
if (queue[j]>queue[k]) ^K@r!)We
break; vbqI$F[s
SortUtil.swap(queue,j,k); w?C_LP
k = j; )g:UH
Ns
} -c<<A.X
} @M#2T
D> Z>4:EM
} Q+mMpI
ZyCAl9{p
} ;07!^#:L=Q
;DC0LJ
SortUtil: au"HIyi?k
P:lvZ
package org.rut.util.algorithm; kSU5
}
KrMIJA4>
import org.rut.util.algorithm.support.BubbleSort; dwrc"GK!o
import org.rut.util.algorithm.support.HeapSort; )FWF T:P~
import org.rut.util.algorithm.support.ImprovedMergeSort; Cb=r 8C
import org.rut.util.algorithm.support.ImprovedQuickSort; oge^2
import org.rut.util.algorithm.support.InsertSort; Ep 5lmzg
import org.rut.util.algorithm.support.MergeSort; vlyq2>TfR
import org.rut.util.algorithm.support.QuickSort; (n" )
import org.rut.util.algorithm.support.SelectionSort; P7egT,Z
import org.rut.util.algorithm.support.ShellSort; n,PHfydqX
:m#vvH
/** MFW?m,It)
* @author treeroot E>4#j
PK
* @since 2006-2-2 ~pzaX8!
* @version 1.0 n/$Bd FH
*/ C^nL{ZP,
public class SortUtil { v^@L?{"}8
public final static int INSERT = 1; y{u6t 3
public final static int BUBBLE = 2; YD.3FTNGC
public final static int SELECTION = 3; |\QR9>
public final static int SHELL = 4; O b8[P=
public final static int QUICK = 5; f@LUp^Z/v
public final static int IMPROVED_QUICK = 6; wB9IP{Pf
public final static int MERGE = 7; L%B+V;<h3
public final static int IMPROVED_MERGE = 8; =v:_N.Fh-c
public final static int HEAP = 9; '0t j2
ATnD~iACY
public static void sort(int[] data) { 6\5U%~78
sort(data, IMPROVED_QUICK); > 7;JZuVo
} w-B\AK?}
private static String[] name={ Lj~lfO
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" .&sguAyG
}; E*(Q'p9C
GGJ_,S*
private static Sort[] impl=new Sort[]{ K"}Dbr
new InsertSort(), \W=
new BubbleSort(), GK&yP%Z3
new SelectionSort(), So`xd
*C!
new ShellSort(), +D
h=D*
new QuickSort(), I]k'0LG*^
new ImprovedQuickSort(), {_q2kk
new MergeSort(), 46XB6z01
new ImprovedMergeSort(), N23s{S t
new HeapSort()
}rO4b>J
}; XX6&%7(
7PQedZ<\
public static String toString(int algorithm){ @=;6:akz`
return name[algorithm-1]; 2Cr+Z(f
} W!X#:UM)
cU{LyZp
public static void sort(int[] data, int algorithm) { +Og O<P
impl[algorithm-1].sort(data); 20fCWVw}?}
} {;p/V\
8ZIv:nO$
public static interface Sort { iGha pD
public void sort(int[] data); M2s
} qh2.N}lW
|HG%o
3E]
public static void swap(int[] data, int i, int j) { qS2%U?S7
int temp = data; ux=a9
data = data[j]; yBl<E$=
data[j] = temp; 8vT:icl
} I7uYsjh@u
} }s)Z:6;(,q