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。 v #+ECx
插入排序: gQeQy
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package org.rut.util.algorithm.support; /JR+WmO
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import org.rut.util.algorithm.SortUtil; j*.;6}\o
/** a}UmD
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* @author treeroot Jy(G
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* @since 2006-2-2 GL
n M1
* @version 1.0 ;u<Ah?w=Z
*/ <X)\P}"L4
public class InsertSort implements SortUtil.Sort{ /*#o1W?wQZ
;5tOQ&p%v
/* (non-Javadoc) Jq/itsg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2^o7 ^S
*/ g{'f%bkG
public void sort(int[] data) { L8`v
int temp; UA$IVK&{
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); QEr<(wM-y
} :H]d1
} ~Gfytn9x.;
} MltO.K!
#gC[L=01
} ?EFRf~7JP
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冒泡排序: e0`z~z]6&
hY&Yp^"}]^
package org.rut.util.algorithm.support; P(shbi@
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import org.rut.util.algorithm.SortUtil; z.8/[)
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/** s47R,K$
* @author treeroot wKM9fs
* @since 2006-2-2 =|?`5!A
* @version 1.0 P73GH
*/ qX@e+&4P0
public class BubbleSort implements SortUtil.Sort{ 99=~vNn
NH/A`Wm
/* (non-Javadoc) KfiSQ!{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?#z$(upQ
*/ Py; 5z
public void sort(int[] data) { ve
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int temp; Q a (Sb
for(int i=0;i for(int j=data.length-1;j>i;j--){ +?*;#=q
if(data[j] SortUtil.swap(data,j,j-1); 'ZF6 Z9
} LzU'6ah';5
} !yd B,S
} d0>U-.
} c e;7
lx|Aw@C3~
} R%jOgZG
z x-[@G
选择排序: j}u L
I-R7+o
package org.rut.util.algorithm.support; NW[K/`-CTH
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import org.rut.util.algorithm.SortUtil; DsMo_m/"1
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/** /WnCAdDgZ
* @author treeroot (l99a&]t
* @since 2006-2-2 DzpWU8j
* @version 1.0 H\>{<`sD;f
*/ @AZNF+
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public class SelectionSort implements SortUtil.Sort { yI^Yh{
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/* .aNh>`OT'
* (non-Javadoc) :M"+
* F=qILwd
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #Pg#\v|7#>
*/ rCw4a?YS
public void sort(int[] data) { 6BV 6<PHJ
int temp; g4ZUh@b~
for (int i = 0; i < data.length; i++) { FsED9+/m
int lowIndex = i; !/p|~K
for (int j = data.length - 1; j > i; j--) { )J 'F]s
if (data[j] < data[lowIndex]) { lq9|tt6Z
lowIndex = j; nq!=9r
} v[
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} '7'/+G'~&
SortUtil.swap(data,i,lowIndex); jF?0,g
} \*t\=4
} tNY;wl:wp
XY'=_5t
}
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Shell排序: d ~M;
0T`Qoo>u
package org.rut.util.algorithm.support; 4FaO+Eo,8
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import org.rut.util.algorithm.SortUtil; 4V:W 8k 9D
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/** +^BThrB
* @author treeroot 6(QfD](2}
* @since 2006-2-2 p(RF
* @version 1.0 B!+c74
*/ cP?GRMX@}
public class ShellSort implements SortUtil.Sort{ y[i}iT/~
c[-N A
/* (non-Javadoc) D/E5&6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ &| (K#|^@
public void sort(int[] data) { "pDU v^ie
for(int i=data.length/2;i>2;i/=2){ ;T^s&/>E
for(int j=0;j insertSort(data,j,i); ={BC0,
} i*|HN"!
} 9?\cm}^?
insertSort(data,0,1); ^|MS2'
} *)Pm
('7?"npd
/** )x!q;^Js9A
* @param data 5, ;\zSz
* @param j 8[@,i|kgg0
* @param i +'m9b7+v
*/ zLl-{Kk
private void insertSort(int[] data, int start, int inc) { }5fd:B m;
int temp; FsqH:I4O
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 5X^\AW
} X4o#kW
} ~3s?.[}d
} (A?>U_@
YW7w>}aW
} %f;v$rsZ
HB )+.e
快速排序: "[
S[vkI
CG%bZco((
package org.rut.util.algorithm.support; GSRf/::I}4
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import org.rut.util.algorithm.SortUtil; sNx_9pJs4
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/** - egTZW-
* @author treeroot uYeb RCdR
* @since 2006-2-2 boiP_*|M Y
* @version 1.0 4(htdn6 \
*/ zYM2`(Z
5B
public class QuickSort implements SortUtil.Sort{ qq!ZYWy2
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/* (non-Javadoc) 4Y?fbb<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &~eCDlX/
*/ [lIX&!T"
public void sort(int[] data) { )y]Dmm
quickSort(data,0,data.length-1); <7y/)b@
} o+x%q<e;c
private void quickSort(int[] data,int i,int j){ pS8\ B
int pivotIndex=(i+j)/2; E#P#{_BR^
file://swap w#1BHx
SortUtil.swap(data,pivotIndex,j); 46vC/
">7xSWR*4
int k=partition(data,i-1,j,data[j]); LHtO|Utn(
SortUtil.swap(data,k,j); -|'@:cIZ
if((k-i)>1) quickSort(data,i,k-1); Y9mhDznS
if((j-k)>1) quickSort(data,k+1,j); Gw)y<h
PZ/tkw
} ~xG/ yPl
/** V(cU/Aia^
* @param data l8E))oz1T
* @param i t5 >ma:^j
* @param j q2#Ebw%]
* @return %rB,Gl:)g
*/ 1a9' *[
private int partition(int[] data, int l, int r,int pivot) { [`tOhL
do{ RV@B[:
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); f/L8usBXq
SortUtil.swap(data,l,r); y={ k7
} W.4R+kF<
while(l SortUtil.swap(data,l,r); "#Z e3Uy\
return l; :[l}Bb,
} ~
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} Ip{hg,>
#N3*SE
改进后的快速排序: hg12NzbK
y:\<FLR}j
package org.rut.util.algorithm.support; T}\>8EEG
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import org.rut.util.algorithm.SortUtil; ~98q1HgS]D
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/** T.De1Q|
* @author treeroot ~7aD#`amU
* @since 2006-2-2 )Fd)YJVR
* @version 1.0 >? o5AdZ
*/ ;PVE= z+y
public class ImprovedQuickSort implements SortUtil.Sort { yVzV]&k
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private static int MAX_STACK_SIZE=4096; o?O ZsA
private static int THRESHOLD=10; lLVD`)
/* (non-Javadoc) s]yZ<uA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R:P),
*/ 4qDa:D"5
public void sort(int[] data) { g&RhPrtl
int[] stack=new int[MAX_STACK_SIZE]; `Zp*?
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int top=-1; 5<X"+`=9
int pivot; >l}v
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int pivotIndex,l,r; L7- JK3/E
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stack[++top]=0; N]8/l:@
stack[++top]=data.length-1; Lm$KR!z
^Zpz@T>m
while(top>0){ $lB!Q8a$
int j=stack[top--]; mr[ 1F]G
int i=stack[top--]; VB^1wm
Bph(\=
W
pivotIndex=(i+j)/2; rG-x 3>b
pivot=data[pivotIndex]; bPV}T`
e8SAjl"}
SortUtil.swap(data,pivotIndex,j); tZ) ,Z<
DFfh!KKR$
file://partition Dt5AG
l=i-1; "@ZwDg`
r=j; TH>uL;?=
do{ ci%$So2#
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); WjVm{ 7?{
SortUtil.swap(data,l,r); [)X( Qtk
} Z>`frL
while(l SortUtil.swap(data,l,r); X$%[%q8qg
SortUtil.swap(data,l,j); kFQo[O]
G{pF! q
if((l-i)>THRESHOLD){ U&^(%W#
stack[++top]=i; @0:Eg 1-
stack[++top]=l-1; [C
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} U0|wC,7"
if((j-l)>THRESHOLD){ <_8eOL<X
stack[++top]=l+1; 1Xcj=I-4
stack[++top]=j; Mj0jpP<uf
} ?/3{gOgI$`
{niV63$m
} 1.2qh"#
file://new InsertSort().sort(data); sNG 7fi.|
insertSort(data); O?#<kmd/)
} =585TR;
V
/** 9u^za!pE
* @param data U2Siw
*/ )fuAdG
private void insertSort(int[] data) { L$Xkx03lz>
int temp; +IGSOWL
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &mJm'Ks
} ;[C_ho
} z/o&r`no
} 22d>\u+c
Yg!fEopLb
} GOCe&?
k:U%#rb;
归并排序: pcQzvLk
0CeBU(U+|R
package org.rut.util.algorithm.support; NljcHe}Qy
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import org.rut.util.algorithm.SortUtil; @ uL4'@Ej
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/** 1b7 Q-elG
* @author treeroot 06af{FXsGb
* @since 2006-2-2 G`v(4`tA
* @version 1.0 uMFV^&ZF
*/ 9j5k=IXg#a
public class MergeSort implements SortUtil.Sort{ Y>i
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/* (non-Javadoc) 1N.weey}W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qpB8ujj<V
*/ /u"K`y/*j\
public void sort(int[] data) { /KgP<2p
int[] temp=new int[data.length]; '8^>Z.~V
mergeSort(data,temp,0,data.length-1); fQf d1=4
} 5'rP-z~
u
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private void mergeSort(int[] data,int[] temp,int l,int r){ AhVV
int mid=(l+r)/2; P#KTlH
if(l==r) return ; mnYzn[d3U
mergeSort(data,temp,l,mid); c=B!\J<1
mergeSort(data,temp,mid+1,r); }1Hy[4B(k\
for(int i=l;i<=r;i++){ ~Ctq
temp=data; {tXyz[;i1}
} Wh?3vZ^
int i1=l; X5)].[d
int i2=mid+1; yEL5U{
for(int cur=l;cur<=r;cur++){ @vi;P ^1!
if(i1==mid+1) F^DDN7AKH
data[cur]=temp[i2++]; k+u L^teyS
else if(i2>r) XJ1<!tl
data[cur]=temp[i1++]; Vg`32nRN
else if(temp[i1] data[cur]=temp[i1++]; yD^Q&1
else c_6~zb?k+m
data[cur]=temp[i2++]; h],l`lT1\
} }(UU~V
} OLJ|gunA#
H1ox>sC
} UDgUbi^v|D
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改进后的归并排序: V(!-xu1,
)K0rPnYV
package org.rut.util.algorithm.support; 8{%[|Ye
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import org.rut.util.algorithm.SortUtil; $2v{4WP7G
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/** fXx !_Z
* @author treeroot 2$>
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* @since 2006-2-2 tb'O:/
* @version 1.0 Z-'xJq
*/ ^1+=HdN,
public class ImprovedMergeSort implements SortUtil.Sort { d/I*$UC
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private static final int THRESHOLD = 10; )WF*fcx{
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/* K1|xatx1V
* (non-Javadoc) ?wj1t!83
* L%[b6<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "xMnD(p
*/ ,uhOf! |
public void sort(int[] data) { zqGo7;;#
int[] temp=new int[data.length]; m^YYdyn]M
mergeSort(data,temp,0,data.length-1); Cq%1j[
} OO?BN!
I(0 *cWO
private void mergeSort(int[] data, int[] temp, int l, int r) { 6tT*b@/_o
int i, j, k; y[~w2a&+
int mid = (l + r) / 2; E<4'4)FHuQ
if (l == r) V%'+ ob6
return; A:Kit_A
if ((mid - l) >= THRESHOLD) Ub*O*nre
mergeSort(data, temp, l, mid); CW;=q[+w
else hT$/ B|
insertSort(data, l, mid - l + 1); CoQ<Ky}*
if ((r - mid) > THRESHOLD) .hytn`+9
mergeSort(data, temp, mid + 1, r); :"~n`
Q2[
else C1SCV^#
insertSort(data, mid + 1, r - mid); $n9Bp'<
4X:S#z
for (i = l; i <= mid; i++) { Hyz:i)2
temp = data; + Awo\;@,
} ~&T%u.u7
for (j = 1; j <= r - mid; j++) { lX|d:HFtP
temp[r - j + 1] = data[j + mid]; L[.RV*sL
} r2xIbZ
int a = temp[l]; m\ (crkN
int b = temp[r]; #TKByOcD2!
for (i = l, j = r, k = l; k <= r; k++) { 3Ay<2v
if (a < b) { -|3feYb'
data[k] = temp[i++]; }E](NvCq
a = temp; $]S*(K3U~
} else { 85]3y%f9
data[k] = temp[j--]; j21nh >d
b = temp[j]; Pa\"l'!>^
} .7M:AS>
} {G4{4D }
} yM*f}S/
(
rIZ^ix-N
/** ).9m6.%Uk
* @param data -jQMh
* @param l 72{Ce7J4
* @param i DmpG35Jk
*/ hy{1 Ea/T
private void insertSort(int[] data, int start, int len) { 7!%xJ!
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); X) xeq
} 4n,>EA85
} q, XRb
} ;-!j,V+$h
} I<^&~==
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& 6
堆排序: O7D61~G]
;dE'# Kb
package org.rut.util.algorithm.support; ;ax%H @o
z)U/bjf
import org.rut.util.algorithm.SortUtil; Sk|DVV$
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/** ! 4{T<s;q
* @author treeroot "$rmy>d
* @since 2006-2-2 <WRrB
`nO
* @version 1.0 5Cjh%rj(jl
*/ >7I"_#x1:
public class HeapSort implements SortUtil.Sort{ A/w7(
y ZR\(\?<
/* (non-Javadoc) 86<[!ZM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X4Y!Z/b
*/ T?V!%AqY:
public void sort(int[] data) { v[I,N$:
MaxHeap h=new MaxHeap(); $`Hb-
h.init(data); Fl0 :Z
for(int i=0;i h.remove(); T+U,?2nF:
System.arraycopy(h.queue,1,data,0,data.length); >,)tRQS
} N=@Nn)
97SOa.@
private static class MaxHeap{ q}0xQjpo
@<,YUp,%S
void init(int[] data){ b'$fr6"O1
this.queue=new int[data.length+1]; p`2w\P3;)
for(int i=0;i queue[++size]=data; uKE?VNC]
fixUp(size); EX9os
} |v31weD8
} t1MK5B5jH
N#zh$0!8bJ
private int size=0; TZYz`l+v
l0-zu6iw
private int[] queue; mel(C1b"j/
t2 0Es
public int get() { $K}Y
return queue[1]; -N~eb^3[c
} 3C7}V{?
J2d3&6
public void remove() { T.x"a$AU
SortUtil.swap(queue,1,size--); HHcWyu
fixDown(1); oQ"J>`',
} ~|5B
file://fixdown #<EMG|&(
private void fixDown(int k) { >0Gdxj]\
int j; =!{
E!3>*D
while ((j = k << 1) <= size) { Qq*Ks
5
if (j < size %26amp;%26amp; queue[j] j++; C.Ty\@U
if (queue[k]>queue[j]) file://不用交换 m6
@,J?X
break; z6>Rv9f
SortUtil.swap(queue,j,k); J.^%VnrFO9
k = j; _m2p>(N|
} AIX?840V
} "{"745H5
private void fixUp(int k) { %e|.a)78
while (k > 1) { )$oboAv#
int j = k >> 1; C6ry]R@
if (queue[j]>queue[k]) gyf9D]W
break; T\b-<Xle
SortUtil.swap(queue,j,k); .qGfLvx%
k = j; ~![J~CkPS
} FvVR \a
} N~t4qlC/
w_h}c$;GK
} CPt62j8
1b4/
} #9FY;~
nTQ&nu!
SortUtil: +xG
xR`M#d5"
package org.rut.util.algorithm; yHIZpU|(j
|h(05Kbk
import org.rut.util.algorithm.support.BubbleSort; tVFydN~
import org.rut.util.algorithm.support.HeapSort; O/1:2G/`
import org.rut.util.algorithm.support.ImprovedMergeSort; I5mtr
import org.rut.util.algorithm.support.ImprovedQuickSort; W&`{3L
import org.rut.util.algorithm.support.InsertSort; m(o^9R_=^9
import org.rut.util.algorithm.support.MergeSort; "nQ&~KQ
import org.rut.util.algorithm.support.QuickSort; 0P7sMCYu
import org.rut.util.algorithm.support.SelectionSort; -jdhdh
import org.rut.util.algorithm.support.ShellSort; .Mb<.R3
3tu:Vc.:M
/** V~!lY\
* @author treeroot 6<qVeO&uZ
* @since 2006-2-2 9XEP:}5,
* @version 1.0 bji^b@us_
*/ 8PXjdHR
public class SortUtil { 3]cW08"c
public final static int INSERT = 1; OuuN~yC
public final static int BUBBLE = 2; #[$zbZ(I>:
public final static int SELECTION = 3; dJ&f +
public final static int SHELL = 4; Ka+N5 T.f
public final static int QUICK = 5; [B+]F~}@
public final static int IMPROVED_QUICK = 6; eb#p-=^KP
public final static int MERGE = 7; +u\kTn
public final static int IMPROVED_MERGE = 8; 8LH\a.>
public final static int HEAP = 9; )Lb?ZXT3
2vh@KnNU
public static void sort(int[] data) { "f |xIK`c
sort(data, IMPROVED_QUICK); wpI_yp
} D8*tzu-
private static String[] name={ &@rXt!
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" J_eu(d[9
}; On*pI37(\
kX)QHNzP
private static Sort[] impl=new Sort[]{ .mwB'Ll
new InsertSort(), +]dh`8*8>1
new BubbleSort(), H&_drxUq;L
new SelectionSort(), G%FLt[
new ShellSort(), S\"#E:A
new QuickSort(), ]21`x
new ImprovedQuickSort(), E hw2o-s^
new MergeSort(), !LAC_b
new ImprovedMergeSort(), A-*y[/
new HeapSort() 2PTAIm Rq
}; o>i@2_r\&H
TnXx;v
public static String toString(int algorithm){ (mOL<h[)IP
return name[algorithm-1]; M,we9];N
} Q@0Zh,l
3]wV 1<K
public static void sort(int[] data, int algorithm) { KJ#SE|
impl[algorithm-1].sort(data); oGvk,mh"(
} e~P4>3
mIh >8))E
public static interface Sort { hSgH;k
public void sort(int[] data);
e]DuV)k&
} Bj*\)lG<
qac8zt#2
C
public static void swap(int[] data, int i, int j) { {v>8Kp7_R
int temp = data; GJ Takhj3
data = data[j]; `W9~u: F
data[j] = temp; f[fH1cu&`
} Kv~'*A)d
} Ls6C*<8