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。 Q4LPi;{\
插入排序: Sa9VwVUE
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package org.rut.util.algorithm.support; *P7/ry^<F
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import org.rut.util.algorithm.SortUtil; W!O/t^H>
/** uQx/o^
* @author treeroot Keo<#Cc?
* @since 2006-2-2 hF@%k
;I
* @version 1.0 zng.(]U/?H
*/ =fnBE`Uc
public class InsertSort implements SortUtil.Sort{ n
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(.@pe Hu)#
/* (non-Javadoc) >2pxl(i
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -2[4 @
*/ BgT ^
public void sort(int[] data) { et)n`NlcK
int temp; TB.>?*<n]
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); - QY<o|
} W]7<PL*u
} =<Sn&uL
} 3~3tjhw;]9
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} k,=<G,
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冒泡排序: _Y&.Nw
yn]Sc<uK
package org.rut.util.algorithm.support; Lhux~,EH
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import org.rut.util.algorithm.SortUtil; 4XER7c
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/** u=v-,Tw
* @author treeroot >FOCdlJ#
* @since 2006-2-2 Ot\[Ya''
* @version 1.0 i?(cp["7
*/ Q"{Dijc%
public class BubbleSort implements SortUtil.Sort{ .(cpYKFX
.$}z</#!
/* (non-Javadoc) =d ;#Nu-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PpG;5
*/ |36%B7H
public void sort(int[] data) { d;gs1]E50
int temp; gU|:Y&lFZg
for(int i=0;i for(int j=data.length-1;j>i;j--){ xcmg3:s
if(data[j] SortUtil.swap(data,j,j-1); \rxjvV4fcZ
} z{w %pUn}
} G]k[A=dg
} [[<TW}
} uQdy
=gJ{75tV3
} D>W&#A8&y
fUWrR1
选择排序: \yw5`5g
%Y;^$%X%_
package org.rut.util.algorithm.support; d1c+Ii%
rm3/R<
import org.rut.util.algorithm.SortUtil; JHm Pa
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/** +
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* @author treeroot :ZB.I(v
* @since 2006-2-2 `{>/'o
* @version 1.0 ,qp8Rg|3j
*/ 3]JJCaf
public class SelectionSort implements SortUtil.Sort { ."BXA8c;A
juF=ZW%i
/* ^ /G ;
* (non-Javadoc) d-Z2-89K
* +VW8{=$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jG{?>^
*/ 08^f|K
public void sort(int[] data) { Lm`-q(!7w
int temp; rBQ<5.
for (int i = 0; i < data.length; i++) { U@yhFj_y
int lowIndex = i; nF]R"
for (int j = data.length - 1; j > i; j--) { VvP: }yJ
if (data[j] < data[lowIndex]) { A. tGr(r
lowIndex = j; <v'[Wl@hq
} q#c+%,Z=C
} U&R)a|
7R
SortUtil.swap(data,i,lowIndex); ,ps?@lD
} OZf@cOTWK
} ai?J
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} EHf,VIC8
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Shell排序: ~:Z|\a58j
NV/paoyx:*
package org.rut.util.algorithm.support; )ADI[+KW
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import org.rut.util.algorithm.SortUtil; :'<;]~f
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/** Q~wS2f`)
* @author treeroot J`[jub
* @since 2006-2-2
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7gHp
* @version 1.0 yZp/P %y
*/ |gxPuAXa)
public class ShellSort implements SortUtil.Sort{ tF/Ni*\^rV
~Y~M}4
/* (non-Javadoc) d]|K%<+(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _>`9]6\&
*/ @,,G]4zZ!
public void sort(int[] data) { I`IW^eZM
for(int i=data.length/2;i>2;i/=2){ Y&,}q_Z:
for(int j=0;j insertSort(data,j,i); t`hes
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} -lfDoNRhQ
} \/ri|fm6l#
insertSort(data,0,1); DS%]7,g]
} O[U`(A:
5({_2meJ:
/** 9\Ff z&
* @param data V73/q
* @param j 4*f+np
* @param i *mj=kJ7(
*/ 6l4=
private void insertSort(int[] data, int start, int inc) { YGQ/zB^Pj
int temp; PY '^:0
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 8,h!&9
} R%}<z*~NE@
} n
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} g&w~eWpk
G~&8/ s
} YhRy
C*b
[ t8]'RI%
快速排序: J{a9pr6
;q%z\gA
package org.rut.util.algorithm.support; JBc*m
*wJz0ex7R/
import org.rut.util.algorithm.SortUtil; l-c:'n
&D-z|ZjgHi
/** #d[Nm+~ko
* @author treeroot & uwOyb
* @since 2006-2-2 t~ I;IB
* @version 1.0 St!0MdCH
*/ w1zMY:9
public class QuickSort implements SortUtil.Sort{ #M!{D
}JQy&V%
/* (non-Javadoc) b[:m[^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~-H3]
*/ ?771e:>S-
public void sort(int[] data) { m0.g}N-w
quickSort(data,0,data.length-1); }zkFl{/u
} `mD!z.`U
private void quickSort(int[] data,int i,int j){ jzpDKc%
int pivotIndex=(i+j)/2; J_yXL7d
file://swap `w4'DB-R)
SortUtil.swap(data,pivotIndex,j); vA6onYjA
()Wu_Q
int k=partition(data,i-1,j,data[j]); [P~7kNFOh
SortUtil.swap(data,k,j); (#85<|z
if((k-i)>1) quickSort(data,i,k-1); 6Xo "?f
if((j-k)>1) quickSort(data,k+1,j); 1K|F;p
cotySio$
} ppLLX1S
/** gWj r|m<
* @param data lJfk4 -;M
* @param i ^ @=4HtA
* @param j lqrI*@>Tz
* @return yoe@]c=
*/ =5^1Bl
private int partition(int[] data, int l, int r,int pivot) { 2-UD^;0
do{ wXnVQ-6H
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); =tA;JB
SortUtil.swap(data,l,r); H~fF;
I
} 'ks .TS&
while(l SortUtil.swap(data,l,r); 6q`)%"4k
return l; 8n2;47 a
} _ 3>E+9TQ
Q qj9o2
} rqBoUS4
w3b?i89
改进后的快速排序: A{)pzV25
yeIS} O
package org.rut.util.algorithm.support; T?Z&\g0yp
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import org.rut.util.algorithm.SortUtil; 9 2D~trn
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/** e9Gu`$K
* @author treeroot ?+Vi
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* @since 2006-2-2 H13\8Te{
* @version 1.0 ]D,_<Kk
*/ u+6D|
public class ImprovedQuickSort implements SortUtil.Sort { bV'r9&[_6
xf7YIhL^*
private static int MAX_STACK_SIZE=4096; #J5_z#-Q;
private static int THRESHOLD=10; KMqGWO*
/* (non-Javadoc) !vK0|eV3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D(<0tU^[
*/ W)o*$cu
public void sort(int[] data) { pJl/d;Cyrb
int[] stack=new int[MAX_STACK_SIZE]; Q3bU"f
WL,2<[)Ew
int top=-1; c8Q2H
int pivot; ]b1>bv%
int pivotIndex,l,r; 1!U:M8T|
jyyig%
stack[++top]=0; b9T6JS j
stack[++top]=data.length-1; Y+$]N:\F\
5efN5Kt
while(top>0){ SfY9PNck\
int j=stack[top--]; %yfl-c(u
int i=stack[top--]; .qYQ3G'V
!:esdJH
pivotIndex=(i+j)/2; &dni6E4
pivot=data[pivotIndex]; q;sZwp<
l:/x&=w
SortUtil.swap(data,pivotIndex,j); !5[SNr3^
*M#L)c;6
file://partition 6;!)^b
l=i-1; &AeNrtGu
r=j; o.zP1n|G~r
do{ 4!96k~d}
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Nq9M$Nt]
SortUtil.swap(data,l,r); 6r@>n_6LY
} EASmB
while(l SortUtil.swap(data,l,r); ; 5[W*,7s
SortUtil.swap(data,l,j); z`Nss
o=
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if((l-i)>THRESHOLD){ P&:[pPG
stack[++top]=i; (ToD
u@p
stack[++top]=l-1; l S
p"(&
} Fe:
~M?]
if((j-l)>THRESHOLD){ :1bDkoK
stack[++top]=l+1; (@^ySiU
stack[++top]=j;
{;u+? uY
} (w(k*b/
fsnZHL}=n
} J
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file://new InsertSort().sort(data); #D{Eq8dp
insertSort(data); 9Nv?j=*$
} '+g[n
/** v*As:;D_
* @param data suLC7x`Z
*/ FQ47j)p;
private void insertSort(int[] data) { K:AP 0Te
int temp; BOy&3.h5?
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;qWSfCt/^
} "VoufXM:
} k w
} OkT@ _U
]Z85%q^`
} _]D
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!
jDopE0L
归并排序: 0sme0"Sl
9pS:#hg
package org.rut.util.algorithm.support; Sx0{]1J
@k'V`ZQF
import org.rut.util.algorithm.SortUtil; ^f"|<r
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/** Ux= B*m1@{
* @author treeroot a+~b3
* @since 2006-2-2 k:@N6K/$P^
* @version 1.0 alNn(0MG
*/ %Kp^wf#o9
public class MergeSort implements SortUtil.Sort{ :kwDa
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/* (non-Javadoc) 1:@ScHS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $T7 qd
*/ Nvh&=%{g
public void sort(int[] data) { >w.%KVBJ
int[] temp=new int[data.length]; Z6Kp-z(l3
mergeSort(data,temp,0,data.length-1); >*!^pbZfX
} F:Ps>
!su773vo
private void mergeSort(int[] data,int[] temp,int l,int r){ :!?Fq/!
int mid=(l+r)/2; El
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if(l==r) return ; #mK?:O\-1
mergeSort(data,temp,l,mid); `GCK%evLG
mergeSort(data,temp,mid+1,r); OTJMS_IT
for(int i=l;i<=r;i++){ hJk:&!M=T
temp=data; q0vZR"y
} X*5N&AJ
int i1=l; Pv\8 \,B9
int i2=mid+1; oEFo7X`t
for(int cur=l;cur<=r;cur++){ &2q<#b
if(i1==mid+1) v?Cakwu
data[cur]=temp[i2++]; b+hN\/*]
else if(i2>r) @qx$b~%
data[cur]=temp[i1++]; DvOvtd
else if(temp[i1] data[cur]=temp[i1++]; ]gaeN2
else HPt\ BK
data[cur]=temp[i2++]; d'3"A"9R7-
} Ss\?SEq
} 'Yc^9;C(
hH%fWB2(
} fZ;}_wR-H
>dD$GD{
改进后的归并排序: n'JS-
FS!)KxC/-
package org.rut.util.algorithm.support; gm!sLZ!X
8.I3%u
import org.rut.util.algorithm.SortUtil; BD86t[${W
asLrXGGyT
/** BS?$eai@:9
* @author treeroot bz~aj}"`
* @since 2006-2-2 [cl+AV "
* @version 1.0 2cRru]VZ5
*/ IXm[c@5l
public class ImprovedMergeSort implements SortUtil.Sort { v'^}zO
Sl<1Rme=w
private static final int THRESHOLD = 10; AP1ZIc6
}#g+~9UK
/* X-TGrdoX
* (non-Javadoc) h%4UeL &F
* ;#0$iE
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D. x8=|;
*/ 7-}5
W
public void sort(int[] data) { e+4Eiv
int[] temp=new int[data.length]; Z5)v
mergeSort(data,temp,0,data.length-1); *">CEQ[MT
} 9d(#/n
D<<q5gG
private void mergeSort(int[] data, int[] temp, int l, int r) { Wv;,@xTZ
int i, j, k; ?.lo[X<,*
int mid = (l + r) / 2; DBLM0*B
if (l == r) IXR'JZ?fH
return; 'RzO`-dr
if ((mid - l) >= THRESHOLD)
_VmXs&4
mergeSort(data, temp, l, mid); bQwG"N
else E'(nJ
insertSort(data, l, mid - l + 1); ZU+_nWnl
if ((r - mid) > THRESHOLD) p|dn&<kd
mergeSort(data, temp, mid + 1, r); *rHz/& ,
else _9p79S<+
insertSort(data, mid + 1, r - mid); ,&o^}TFkg
-p>1:M <
for (i = l; i <= mid; i++) {
Q6e7Z-8
temp = data; Cg`lQYU
} 7l~^KsX
for (j = 1; j <= r - mid; j++) { *,*O.#<6
temp[r - j + 1] = data[j + mid]; ~kSOYvK$'
} .9,x_\|G*
int a = temp[l]; "bWx<
int b = temp[r]; lQvgq
for (i = l, j = r, k = l; k <= r; k++) { T:H~Y+qnt
if (a < b) { 9&`";dg
data[k] = temp[i++]; S7#dyAX8
a = temp; j|N<6GSke
} else { a l6y=;\jZ
data[k] = temp[j--]; [C<K~
b = temp[j]; M* Ej*#
} "+wkruC
} _2{_W9k
} / #rH18
h{$k%YJ?
/** 0( A ?&
* @param data H{S+^'5Y.
* @param l ]*lZFP~
* @param i [6_.Y*}N
*/ .P")S|
private void insertSort(int[] data, int start, int len) { mU?~s7
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); uozq^sy
} 7DoU7I\u
} |0}7/^
} WVOj;c
} %iEdU V\$
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堆排序: 3(,m(+J[S
y,ub*-:
package org.rut.util.algorithm.support; k`|E&+og
'g'RXC}D>
import org.rut.util.algorithm.SortUtil; bGK*1FlH
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/** Yg,b
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* @author treeroot j u"?b2f
* @since 2006-2-2 Hc8He!X*#
* @version 1.0 4Y2I'~'
*/ ^H1m8=
public class HeapSort implements SortUtil.Sort{ -o`K/f}d
QJrXn6`
/* (non-Javadoc) y"'p#j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KF1iYo>p
*/ [)GRP
public void sort(int[] data) { -$0}rfX
MaxHeap h=new MaxHeap(); ?~t5>PEonv
h.init(data); <g;,or#$
for(int i=0;i h.remove(); e!gNd>b {
System.arraycopy(h.queue,1,data,0,data.length); V&vG.HAT
} V\{@c%xW
vc p{Gf|^
private static class MaxHeap{ *i:8g(
l>pB\<LL
void init(int[] data){ xRhGBb{@s
this.queue=new int[data.length+1]; oq!\100
for(int i=0;i queue[++size]=data; K\XQE50
fixUp(size); ]y=U"g
} ?Fny_{&^H
} ort*Ux)
CsycR @[
private int size=0; ?YZgH>7"
#0uu19+}
private int[] queue; "RK"Pn+
Mog [,{w
public int get() { C,W_0=!e
return queue[1]; A:GqR;;"x>
} HJ]e%og
1Td`S1'#yg
public void remove() { +ZW>JjP*
SortUtil.swap(queue,1,size--); iQ8{N:58DN
fixDown(1); -Pt E+R[A
} RH _b
file://fixdown eF.nNu
private void fixDown(int k) { $hcv}<$/
int j; @<pd@Mpf]
while ((j = k << 1) <= size) { R8u8jG(4
if (j < size %26amp;%26amp; queue[j] j++; p}1gac_c
if (queue[k]>queue[j]) file://不用交换 ]?D$n
break; SM
RKEPwp&
SortUtil.swap(queue,j,k); )D6i {I0
k = j; gWa0x-
} jy5[K.
} %H"
private void fixUp(int k) { ]wEI*c(
while (k > 1) { C=q&S6/+
int j = k >> 1; h'=)dFw7
if (queue[j]>queue[k]) { >izfG,\
break; g_P98_2f.k
SortUtil.swap(queue,j,k); y'odn ;
k = j; mhhc}dS(H
} N~CQh=<
} |^UQVNJ
)^s>2 1
} ;7?oJH;
H,w8+vZ4\
} wZ\93W-}
X;6;v]
SortUtil: 1R~$m
6O6B8
package org.rut.util.algorithm; \:1$E[3v
sfw*_}y
import org.rut.util.algorithm.support.BubbleSort; x,10o
import org.rut.util.algorithm.support.HeapSort; 3MHpP5C
import org.rut.util.algorithm.support.ImprovedMergeSort; p19(>|$J
import org.rut.util.algorithm.support.ImprovedQuickSort; .$x}~Sw
import org.rut.util.algorithm.support.InsertSort; 9v*y&V9/
import org.rut.util.algorithm.support.MergeSort; JluA?B7E
import org.rut.util.algorithm.support.QuickSort; >W-xDzJry
import org.rut.util.algorithm.support.SelectionSort; 3I( n];
import org.rut.util.algorithm.support.ShellSort; EHn!ZrQgh
:6t73\O
/** ?#: ']q
* @author treeroot *f;$5B#^
* @since 2006-2-2 dO1m
* @version 1.0 PDA9.b<q0
*/ E.NfVeq
public class SortUtil { RxJbQs$Ph
public final static int INSERT = 1; XfVdYmii
public final static int BUBBLE = 2; UMd.=HC L
public final static int SELECTION = 3; hN=kU9@knC
public final static int SHELL = 4; y|MhV/P04
public final static int QUICK = 5; iZdl0;16[
public final static int IMPROVED_QUICK = 6; 0R\.G1f%
public final static int MERGE = 7; 2INpo
public final static int IMPROVED_MERGE = 8; ,pTZ/#vP#
public final static int HEAP = 9; 9ETdO,L)f
X{Vs
public static void sort(int[] data) { x+6z9{O
sort(data, IMPROVED_QUICK); 'h6G"=+
} O^-QqCZE
private static String[] name={ gTTKjlI[
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" R,PN?aj
}; sgK =eBE
w2'z~\dG8
private static Sort[] impl=new Sort[]{ ?;P6#ByR
new InsertSort(), pn(i18x
new BubbleSort(), ]3*w3Y!XK
new SelectionSort(), vW*Mf}=
new ShellSort(), ,=Wj*S)~
new QuickSort(), H'YK j'
new ImprovedQuickSort(), Zh;}Q(w
new MergeSort(), t6KKfb
new ImprovedMergeSort(), > _sSni
new HeapSort() L{>rN`{
}; i{$P.i/&
H9TeMY
public static String toString(int algorithm){ ",gVo\^
return name[algorithm-1]; fmv:vs /9
} ]$s)6)kW
V*te8HIe
public static void sort(int[] data, int algorithm) { )#\3c,<Y
impl[algorithm-1].sort(data); Z.@n7G
} LXby(|<j
L9Zz-Dr s
public static interface Sort { =GP L>a&
public void sort(int[] data); k CGb~+
} ATc!c +
uQ[,^Ee&/
public static void swap(int[] data, int i, int j) { ]SU)L5Dt;
int temp = data; }\8-&VoY#X
data = data[j]; 6o6yx:
data[j] = temp; fI0"#iv}
} |?0MRX0'g
} ;7qzQ{Km