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。 ]"^GRFK5
插入排序: YTq>K/
nX>k}&^L
package org.rut.util.algorithm.support; /Mf45U<
K}O~tff
import org.rut.util.algorithm.SortUtil; ^!|BKH8>f%
/** WKpHb:H
* @author treeroot .N]^g#
* @since 2006-2-2 pTmG\wA~$
* @version 1.0 +D1;_DU
*/ +bd/*^
public class InsertSort implements SortUtil.Sort{ MQ"<r,o?:
cGC&O%`i,\
/* (non-Javadoc) A20_a;V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .+aSa?h_
*/ P/t$xqAL
public void sort(int[] data) { A]BD2
int temp; f7XmVCz1
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); p`{9kH1m e
} $,icKa
} [HIg\N$I8C
} k+-u4W
FFH-Kw,
} CQ sVGn{x
dvsOJj/b
冒泡排序: wmY6&^?uS
0_Etm83Wq6
package org.rut.util.algorithm.support; dW!T.S
6ssZg@}nf{
import org.rut.util.algorithm.SortUtil; (XT^<#Ga
VX&KGG.6
/** +YhTb
* @author treeroot O" ['.b
* @since 2006-2-2 +S|y)W8
* @version 1.0 E](Ood
*/ w0moC9#$?
public class BubbleSort implements SortUtil.Sort{ _}`iLA!$I
y{K~g<VL
/* (non-Javadoc) ?{cF'RB.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !e.@Xk.P6
*/ j/wNPB/NM
public void sort(int[] data) { nb22bXt
int temp; n7X3aoVV
for(int i=0;i for(int j=data.length-1;j>i;j--){ o?^j1\^
if(data[j] SortUtil.swap(data,j,j-1); 'fcJ]%-=
} Pp3tEZfE
} :!3CoC.X|c
} u&bo32fc
} 3,tKqR7g
u-j$4\'
} |...T
4:^Y
w{K_+}fAC
选择排序: GC$Hp!H
V'^s5
package org.rut.util.algorithm.support; .knRH^
lpve Yz
import org.rut.util.algorithm.SortUtil; d'^jekh
|;{wy
/** .'+Tnu(5q
* @author treeroot $CHri|
* @since 2006-2-2 1>57rx"l
* @version 1.0 ^"l>;.w
*/ wp.<}=|u
public class SelectionSort implements SortUtil.Sort { $>5|TG
0i
(EuHQ&<^9
/* wC <!,tB(8
* (non-Javadoc) v2JC{XqrI
* Aq QArSu,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B4[onYU
*/ kP6g0,\|a|
public void sort(int[] data) { z9&$Xao
int temp; W?F+QmD
for (int i = 0; i < data.length; i++) { #=7~.Y
int lowIndex = i; |53Zg"!
for (int j = data.length - 1; j > i; j--) { X!"ltNd
if (data[j] < data[lowIndex]) { IR(JBB|xNQ
lowIndex = j; v~ZdMQvwt
} '`\\O:@C`
} %{&yXi:mS
SortUtil.swap(data,i,lowIndex); DDc?GY:
} ,t5Ku)eNm
} J03yFT,dF
yXR$MT+ ~
} ^C_Y[i
~|
HWFo9as""v
Shell排序: #{UM4~|:
*hAq]VC})
package org.rut.util.algorithm.support; >F!2ib8
gG~UsA
import org.rut.util.algorithm.SortUtil; t~Cul+
z[}[:H8
/** =+'4u
* @author treeroot B Lw ssr.
* @since 2006-2-2 j5G8IP_Wx
* @version 1.0 Kt;h'?
*/ DE^{8YX,
public class ShellSort implements SortUtil.Sort{ M7fw/i
M{3He)&
/* (non-Javadoc) *Jmy:C<>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P<
O [S
*/ o.keM4OQ
public void sort(int[] data) { +/-#yfn!TR
for(int i=data.length/2;i>2;i/=2){ NK$k9,
for(int j=0;j insertSort(data,j,i); ;l7wme8Qk
} kDS4 t?Ig
} sD_Z`1
insertSort(data,0,1); /F4rbL^:
} iaLsIy#h
Zh6bUxr
/** go@UE2qw
* @param data @'/\O-
* @param j b{b2L.
* @param i O!\P]W4r$
*/ 25::z9i
private void insertSort(int[] data, int start, int inc) { tl
(2=\
int temp; KArR.o }
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); '_@Y
} 5 nkx8JJ
} .]k+hc`
} i"r&CS)sT
cX>
a>U
} vjhd|
0V1)ou84'
快速排序: xw&[ 9}Y
[YpSmEn}Y
package org.rut.util.algorithm.support; ?76Wg::
*[wy-
fu
import org.rut.util.algorithm.SortUtil; cWA9 n}Z
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/** \&NpVH,-
* @author treeroot \rF6"24t6
* @since 2006-2-2 J3Qv|w[3Y
* @version 1.0 F@& R"-
*/ p&>*bF,
public class QuickSort implements SortUtil.Sort{ \A6MVMF8
q?nXhUD
/* (non-Javadoc) o
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kn^RS1m
*/ +%OINMo.A
public void sort(int[] data) { O={4 >>F
quickSort(data,0,data.length-1); k?;A#L~
} JN .\{ Y
private void quickSort(int[] data,int i,int j){ +?w 7Nm`
int pivotIndex=(i+j)/2; *!$4
file://swap #5wOgOv
SortUtil.swap(data,pivotIndex,j); o8-BTq8
%g5TU 6WP
int k=partition(data,i-1,j,data[j]); 3{LXx
SortUtil.swap(data,k,j); '_lyoVP
if((k-i)>1) quickSort(data,i,k-1); 1XSA3;ZEc
if((j-k)>1) quickSort(data,k+1,j); GbFLu`I u
W2D^%;mw
} GpMKOjVm|
/** `MAee8u'
* @param data X/gIH/
* @param i gbsRf&4h
* @param j OL4I}^*,
* @return !
@{rkp
*/ 1P.
W 34
private int partition(int[] data, int l, int r,int pivot) { [^EU'lewnW
do{ \_Nr7sc\
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); peCmb)>Sa
SortUtil.swap(data,l,r); <H<5E'm
} kT&-:: ^R
while(l SortUtil.swap(data,l,r); ,24NMv7
return l; zlF*F8>m
} ([R}s/)$
1+~JGY#
} L-hK(W!8pt
x|d Xa0=N_
改进后的快速排序: !C
*%,Ak
es]\xw
package org.rut.util.algorithm.support; +0rMv
RrSSAoz1
import org.rut.util.algorithm.SortUtil; dIQ7u
XKp.]c wP
/** "u~l+aW0
* @author treeroot Tf7$PSupP
* @since 2006-2-2
gcqcY
* @version 1.0 r(h&=&T6
*/ BIEc4k5(
public class ImprovedQuickSort implements SortUtil.Sort { J~eY,n.6]
M[}EVt~
private static int MAX_STACK_SIZE=4096; q>/#
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private static int THRESHOLD=10; 8Y *SZTzV
/* (non-Javadoc) Fh9%5-t:J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l>`N+ pZ$
*/ R $HIJM
public void sort(int[] data) { j/4N
int[] stack=new int[MAX_STACK_SIZE]; )8kcOBG^L
}YW0?-G.$
int top=-1; ,Dfq%~:grT
int pivot; E1IRb':
int pivotIndex,l,r; A ${b]
@'C f<wns
stack[++top]=0; {Z 3t0F
stack[++top]=data.length-1; .j:.?v
+Mc kR
while(top>0){ 1@q~(1-o
int j=stack[top--]; A`v (hBM
int i=stack[top--]; -ZFeE[Z
o90SXa&l/
pivotIndex=(i+j)/2; T=35?
pivot=data[pivotIndex]; 9w'3d@
06"p^#
SortUtil.swap(data,pivotIndex,j); !<H[h4g
!`q*{Ojx
file://partition &,4]XT
l=i-1; v+U(
#"
r=j; |7n&I`#
do{ i#$9>X
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); $C0NvJf
SortUtil.swap(data,l,r); 8:;_MBt
} xnmIo?
hC
while(l SortUtil.swap(data,l,r); 2ME"=!&5
SortUtil.swap(data,l,j); N]R<EBq
;"SnCBt:>
if((l-i)>THRESHOLD){ WJ=DTON
stack[++top]=i; ?#!Hm`\.
stack[++top]=l-1; 1RM;"b/
} cE>K:3n
if((j-l)>THRESHOLD){ s|rlpd4y
stack[++top]=l+1; DrLNY"Zq
stack[++top]=j; -Bbg'=QZa
} vK6YU9W~J
x?Z)q4
} [tsi8r=T
file://new InsertSort().sort(data); !Rk1q&U5
insertSort(data); _=E))Kp{z
} }[}u5T`w>
/** NLFs)6\
* @param data GdG1e%y]z
*/ $fhrGe
private void insertSort(int[] data) { 8v@6 &ras@
int temp; B3K!>lz
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); S>}jsP:V
} 26JP<&%L
} 3xef>Xv=
} *k==2figz
\kcJF'JFA0
} z_R^n#A~r
JL $6Fw;
归并排序: fpf1^TZ
LSb3w/3M
package org.rut.util.algorithm.support; {PgB~|W
R 5 47
import org.rut.util.algorithm.SortUtil; {9U<!
r|4jR6%<'m
/** BM=`zGh"
* @author treeroot `?LQd2p
* @since 2006-2-2 ta"/R@ k*
* @version 1.0 SY|r'8Z%Q
*/ qJ|ByZ.N+
public class MergeSort implements SortUtil.Sort{ [1B F8:
4"1OtBU3
/* (non-Javadoc) D}'g4Ag
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mj5$ 2J
*/ Ol H{!
public void sort(int[] data) {
c+?L?s`"
int[] temp=new int[data.length]; JbpKstc;
mergeSort(data,temp,0,data.length-1); -/|O*oZ
} I7TdBe-
2Fi>nJ
private void mergeSort(int[] data,int[] temp,int l,int r){ 0/hX3h
int mid=(l+r)/2; *I%r
if(l==r) return ; wGa0w*$
mergeSort(data,temp,l,mid); ^;+lsEW
mergeSort(data,temp,mid+1,r); B%gk[!d}8
for(int i=l;i<=r;i++){ ='u'/g$'&
temp=data; ha
} Je_Hj9#M\d
int i1=l; +#8?y
5~q
int i2=mid+1; QwXM<qG*
for(int cur=l;cur<=r;cur++){ Hn)K;?H4
if(i1==mid+1) ! P/ ]o
data[cur]=temp[i2++]; =<fH RX`
else if(i2>r) 7iu?Q
data[cur]=temp[i1++]; 6G6Hg&B
else if(temp[i1] data[cur]=temp[i1++]; nL!h hseH
else RrKAgw
data[cur]=temp[i2++]; a
OR}
} I8HUH*|)n
} cw.Uy(ks|$
?GqFtNz
} uA=6 HpDB
oc'#sE
改进后的归并排序: HRIf)n&~f
*V#v6r7<Y/
package org.rut.util.algorithm.support; UXD?gK1
7Z5,(dH>
import org.rut.util.algorithm.SortUtil; Ht+ng
qY\zZ
/** (y|{^@
* @author treeroot g0I<Fan
* @since 2006-2-2 g!~&PT)*
* @version 1.0 hY+3PNiI@
*/ 2n+j.
public class ImprovedMergeSort implements SortUtil.Sort { H^xrFXg~z
$UW!tg*U&
private static final int THRESHOLD = 10; heoOOP(#
SFoF]U09
/* vM~/|)^0sW
* (non-Javadoc) i0/gyK
* s([9/ED
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Fp4?/-]
*/ *E:w377<}
public void sort(int[] data) { W093rNF~
int[] temp=new int[data.length]; Tj*o [2mD
mergeSort(data,temp,0,data.length-1); T[a1S ?_*T
} ju0]~,
TFbCJ@X
private void mergeSort(int[] data, int[] temp, int l, int r) { M['25[
int i, j, k; <y'B
!d#
int mid = (l + r) / 2; jjBcoQU$o
if (l == r) gXI_S9z
return; v}A] R9TY
if ((mid - l) >= THRESHOLD) d hiLv_/
mergeSort(data, temp, l, mid); Iu|G*~\
else a<tUpI$
insertSort(data, l, mid - l + 1); OdgfvHDgW
if ((r - mid) > THRESHOLD) p9R`hgx
mergeSort(data, temp, mid + 1, r); ]n?a h
else wJ!
insertSort(data, mid + 1, r - mid); S$W
*i@x?
RL~|Kr<7J
for (i = l; i <= mid; i++) { a$#,'UB
temp = data; OQ#gQ6;?0
} ~]Mq'
for (j = 1; j <= r - mid; j++) { .Y'kDuUu
temp[r - j + 1] = data[j + mid]; X^% I 3
} COv#dOw
int a = temp[l]; %#Wg>6
int b = temp[r]; ;w4rwL
for (i = l, j = r, k = l; k <= r; k++) { V'c9DoSRI\
if (a < b) { Fdd$Bl.&XS
data[k] = temp[i++]; 8"wA8l.
a = temp; "A__z|sQ
} else { SAs'u"EB
data[k] = temp[j--]; +;#hED;8
b = temp[j]; .
)Fn]x"<
} H:U1#bQQ:
} ;G!X?(%+
} M<7<L
Bx
E1Ky8@A
/** aFo%B; 8m
* @param data 6`NsX
* @param l =N<Hc:<t4
* @param i L"zOa90ig
*/ <y*#[:i
private void insertSort(int[] data, int start, int len) { 8/b_4!5c
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 0'^? m$
} HT
A-L>Cee
} OI %v>ns
} @U;-5KYYi
} v7O{8K+
x0.&fCh%
堆排序: z-[Jbjhd
{0QD-b o
package org.rut.util.algorithm.support; {xEX_$nv
wX#\\Jgi
import org.rut.util.algorithm.SortUtil; U,iTURd
#`z!f0
P
/** oLruYSaD
* @author treeroot }y|%wym
* @since 2006-2-2 Uvf-h4^J]:
* @version 1.0 /qI80KVnN
*/ ehxtNjA
public class HeapSort implements SortUtil.Sort{ Yc:b:\0}F6
XF\`stEnb
/* (non-Javadoc) <n }=zu
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ":]O3 D{r
*/ rorzxp{
public void sort(int[] data) { z &<Rx[
MaxHeap h=new MaxHeap(); P_-zkw
h.init(data); +hjc~|RK
for(int i=0;i h.remove(); V$q%=Sip
System.arraycopy(h.queue,1,data,0,data.length); Vz 5:73
} 1b6gTfU
xO1d^{~^^
private static class MaxHeap{ 6J%SkuxR
XF^c(*5
void init(int[] data){ ys+?+dY2
this.queue=new int[data.length+1]; #l;Ekjfz
for(int i=0;i queue[++size]=data; h^hEyrJw
fixUp(size); wk9tJ#}
} U45/%?kE)
} 2d.I3z:[
7UQD02
private int size=0; = 1}-]ctVn
bs+KcY:N]
private int[] queue; cR@z^
s
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public int get() { i":-g"d
return queue[1]; NPB':r-8
} NLz$jk%=g
Qs%f6rL
public void remove() { B|, 6m 3.
SortUtil.swap(queue,1,size--); KL5rF,DME
fixDown(1); ~PlwPvWo
} Iu1P}R>C
file://fixdown DN^ln%#
private void fixDown(int k) { G)< k5U4
int j; \re.KB#R
while ((j = k << 1) <= size) { RtqW!ZZ:H
if (j < size %26amp;%26amp; queue[j] j++; B.Xm*adBT
if (queue[k]>queue[j]) file://不用交换 ,{oP`4\Lm
break; ppV\FQ{K
SortUtil.swap(queue,j,k); Ce_Z
&?
k = j; ~MhPzu&B
} jC\R8_
} ^<% w'*gR
private void fixUp(int k) { uxh4nyE
while (k > 1) { k*M{?4
int j = k >> 1; YRYrR|I
if (queue[j]>queue[k]) n53}79Uiz
break; aY {.
SortUtil.swap(queue,j,k); m
k = j; *JpEBtTv=5
} (|6qN
} nIsi
p:4vjh=1h
} W_DO8nX
v>nJy~O]
} 10[~ki-1;
$C[YqZO
SortUtil: a,j!B
hu
eQ9x l
package org.rut.util.algorithm; *Lh0E/5
"(C}Dn#
import org.rut.util.algorithm.support.BubbleSort; e<C5}#wt
import org.rut.util.algorithm.support.HeapSort; M1ayAXO
import org.rut.util.algorithm.support.ImprovedMergeSort; sdO;vp^:b
import org.rut.util.algorithm.support.ImprovedQuickSort; 6iC}%eU
import org.rut.util.algorithm.support.InsertSort; 2j"%}&
import org.rut.util.algorithm.support.MergeSort; r{<u\>6X>P
import org.rut.util.algorithm.support.QuickSort; a"&Z!A:Z=
import org.rut.util.algorithm.support.SelectionSort; sztnRX_
import org.rut.util.algorithm.support.ShellSort; Mys;Il"
L>L4%?
/** g{D&|qWj
* @author treeroot "QlCcH`g
* @since 2006-2-2 NA3yd^sr
* @version 1.0 #g|j;{P
*/ C$(t`G
public class SortUtil { )0GnTB;5Z
public final static int INSERT = 1; =Q|}7g8o
public final static int BUBBLE = 2; n!N;WL3k
public final static int SELECTION = 3; A>4k4*aFm#
public final static int SHELL = 4; l y%**iN
public final static int QUICK = 5; .K7A!;
public final static int IMPROVED_QUICK = 6; cX=` Tl
public final static int MERGE = 7; C>03P.s4c
public final static int IMPROVED_MERGE = 8; Vm.u3KE
public final static int HEAP = 9; ]{"(l(
c:$:j,i}
public static void sort(int[] data) { .xk<7^ZD
sort(data, IMPROVED_QUICK); q?MYX=Y6
} 4kz8U
private static String[] name={ &FZe LIt
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 2fLd/x~
}; Ke/P[fo
i5wA=K_
private static Sort[] impl=new Sort[]{ Y7jD:P
new InsertSort(), (la
new BubbleSort(), txgGL'
new SelectionSort(), DRzpV6s
new ShellSort(), CTI(Kh+
new QuickSort(),
K8+b\k4E
new ImprovedQuickSort(), ^y3\e
new MergeSort(), yf8UfB#a
new ImprovedMergeSort(), 0 /kbxpih
new HeapSort() FQ87[|
S
}; u+R?N%
EKP
Mb9q<4
public static String toString(int algorithm){ SKtEEFyIR_
return name[algorithm-1]; $e;!nI;z
} )N6R#
B>]5/!_4
public static void sort(int[] data, int algorithm) { c,-x}i0c
impl[algorithm-1].sort(data); 1Efl|lV
} =ddx/zN
Nb8<8O
^
public static interface Sort { Y5NbY02E
public void sort(int[] data); KGWENX_U
} .;F+ QP0
EUn"x'
public static void swap(int[] data, int i, int j) { $oQsh|sTI
int temp = data; hHg
gH4T
data = data[j]; 5HIpoj;\(
data[j] = temp; 6m"
75
} M"vcF5q
} u7C{>