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。 #&IrCq+
插入排序: w9GY/]
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package org.rut.util.algorithm.support; Gdb0e]Vt+
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import org.rut.util.algorithm.SortUtil; 8aVQW_m}
/** K/C}
* @author treeroot okRt^qe
* @since 2006-2-2 uKXU.u*C
* @version 1.0 ~s4JGV~R
*/ EH2):
public class InsertSort implements SortUtil.Sort{ @q<h.#9
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/* (non-Javadoc) }0E@eL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \R@}X cqZ
*/ <ZZfN@6
public void sort(int[] data) { KYB3n85 1
int temp; ,?j!c*
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); hr.mzQd
} .aa7*e
} 1_LKqBgo
} lY`WEu
:/=P6b;
} `_Iyr3HAf
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冒泡排序: Th%w-19,8
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package org.rut.util.algorithm.support; &f 'Lll
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import org.rut.util.algorithm.SortUtil; Om:Gun\%
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/** AM!P?${a
* @author treeroot av(qV$2
* @since 2006-2-2 ^8oN~HLZ
* @version 1.0 p +JOUW
*/ AX@bM
public class BubbleSort implements SortUtil.Sort{ 2xuU[
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/* (non-Javadoc) gf9,/m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4xs>X7
*/ 6@^
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public void sort(int[] data) { U/q"F<?.c
int temp; $?kTS1I(
for(int i=0;i for(int j=data.length-1;j>i;j--){ fvTp9T\f3
if(data[j] SortUtil.swap(data,j,j-1); ~rOvVi&4
} J^` pE^S
} )06. dZq\
} L~|_)4
} E]a,2{&8<
l3MA&&++KF
} r
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选择排序: :WH0=Bieh
w{;bvq%lY
package org.rut.util.algorithm.support; 2V9"{F?
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import org.rut.util.algorithm.SortUtil; =hh,yi
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/** q,Nqv[va
* @author treeroot P6^\*xkMr
* @since 2006-2-2 ='eQh\T)
* @version 1.0 #c<F,` gdi
*/ [e. `M{(TB
public class SelectionSort implements SortUtil.Sort { 2+(SR.oGq
/6N!$*8
/* )J\
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* (non-Javadoc) `a7b,d
* K^AIqL8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O'~^wu.
*/ <3k9 y^0
public void sort(int[] data) { 2rP!]
int temp; zBrqh9%8e
for (int i = 0; i < data.length; i++) { r)qow.+&
int lowIndex = i; $I4JKh
for (int j = data.length - 1; j > i; j--) { J(,gLl
if (data[j] < data[lowIndex]) { }`$({\^w
lowIndex = j; M|z4Dy
} .0y .0=l
} x*^)B~7}
SortUtil.swap(data,i,lowIndex); 1G, '
} GV)DLHiyxX
} N':d
T
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} F*B^#AZg
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Shell排序: 8+_e= _3R
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package org.rut.util.algorithm.support; [QT
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import org.rut.util.algorithm.SortUtil; ^j_t{h)W(0
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/** bb`DyUy ^+
* @author treeroot QN~9O^
* @since 2006-2-2 Z=s]@r
* @version 1.0 h7\16j
*/ pvqbk2BO
public class ShellSort implements SortUtil.Sort{ 98l-
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/* (non-Javadoc) 7tT L,Nxe
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wAF#N1-k
*/ VelX+|w
public void sort(int[] data) { l)
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for(int i=data.length/2;i>2;i/=2){ YQfQ[{kp
for(int j=0;j insertSort(data,j,i); ( v=Z$#l
} ,n{|d33
} _3Q8R}
insertSort(data,0,1); A}03s6^i;
} 'F8:|g
2I~a{:O
/** Ria*+.k@"B
* @param data ]:]w+N%7
* @param j >R6>*|~S
* @param i M*jn8OE
*/ 1QuR7p
private void insertSort(int[] data, int start, int inc) { !='&#@7u
int temp; XM*%n8q7#N
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ?[Qxq34
} RZKczZGZg
} ^5gB?V,
} |f&=9%
{B6tGLt#bf
} `OyYo^+D|.
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快速排序: ApAHa]Ccp
.[:*bo3
package org.rut.util.algorithm.support; FHu+dZ
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import org.rut.util.algorithm.SortUtil; %MUwd@,
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/** :.EVvuXI
* @author treeroot ZzO.s$
* @since 2006-2-2 #v4q:&yKf
* @version 1.0 lWYgIpw
*/ VbzW4J_
public class QuickSort implements SortUtil.Sort{ Jyu*{
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/* (non-Javadoc) y 4jelg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SA16Ng
*/ uzUZuJ
public void sort(int[] data) { Jq?"?d|:
quickSort(data,0,data.length-1); 7q _.@J
} m:XMF)tW
private void quickSort(int[] data,int i,int j){ l+8G6?@]>
int pivotIndex=(i+j)/2; !@-g9z
file://swap .EoLJHL
}
SortUtil.swap(data,pivotIndex,j); 8klu*
7~Md6.FtM
int k=partition(data,i-1,j,data[j]); %g*AGu`
SortUtil.swap(data,k,j); dD8f`*"*=
if((k-i)>1) quickSort(data,i,k-1); HBnnIbEtF'
if((j-k)>1) quickSort(data,k+1,j); zc#aQ.
5S?+03h~
} ;O7<lF\7o
/** 9i+SU|;j
* @param data 2f$6}m'Ad
* @param i RBzBR)@5
* @param j H-.8{8
* @return P ".[=h
*/ [6Gb@jG
private int partition(int[] data, int l, int r,int pivot) { t<2B3&o1
do{ eE-@dU?
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); GE[J`?E]
SortUtil.swap(data,l,r); #!X4\+)
} VBK9te,A
while(l SortUtil.swap(data,l,r); nZ2mY!*
return l; ^8yhx-mgb
} wtw
gNG_,+=!
} ]RJcY1
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改进后的快速排序: S20L@e"U
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package org.rut.util.algorithm.support; 5b2_{6t
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import org.rut.util.algorithm.SortUtil; zLiFk<G@Xi
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/** sh %snLw
* @author treeroot kW@,P.88
* @since 2006-2-2 gjVKk
* @version 1.0 )N4_SA
*/ $NtbI:e{
public class ImprovedQuickSort implements SortUtil.Sort { _ *O^|QbM
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private static int MAX_STACK_SIZE=4096; MdOQEWJ$|
private static int THRESHOLD=10; fc#zhp5bX
/* (non-Javadoc) &u'$q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ 2%Y]M%P
public void sort(int[] data) { AI&Bv
int[] stack=new int[MAX_STACK_SIZE]; T~rPpi&
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int top=-1; Q,mmHw.`J
int pivot; }G#TYF}
int pivotIndex,l,r; 3i'L5f67
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stack[++top]=0; F#w=z/
stack[++top]=data.length-1; &O5W
1 f;k)x
while(top>0){ E$'Zd,|f=
int j=stack[top--]; OA_Bz"
int i=stack[top--]; 5 :ZM-kZT
S6r$n
pivotIndex=(i+j)/2; q >|:mXR
pivot=data[pivotIndex]; n~g,qEI;<x
<QyJJQM
SortUtil.swap(data,pivotIndex,j); :!h1S`wS
^Z{W1uYi
file://partition <I{)p;u1
l=i-1; aD1G\*AFJ
r=j; .*N,x0B(
do{ E K)7g~
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); VE<&0d<
SortUtil.swap(data,l,r); q.l"Y#d
} Fx.hti
while(l SortUtil.swap(data,l,r); z;_fO>u:
SortUtil.swap(data,l,j); D,rF?t>=S
L`$MOdF{_
if((l-i)>THRESHOLD){ `H5n_km
stack[++top]=i; EhkvC>y
stack[++top]=l-1; h$Z_r($b
} ix<sorR H
if((j-l)>THRESHOLD){ k#I4^
stack[++top]=l+1; hDp
-,ag{
stack[++top]=j; JwNG`MGc
} \/J7U|@Lt
yE(> R(^
} 8 ]N
file://new InsertSort().sort(data); q89#Ftkt
insertSort(data); uj_ OWre
} DA_[pR
/** %8 )GuxG*
* @param data tTT./-*0
*/ ZLBv\VQ
private void insertSort(int[] data) { )2|'`
int temp; Ub%al
D
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); o!`.LL%
} Rl7V~dUY
} +)#d+@-
} |-Z9-rl
MOuI;EF
} "(6]K}k@
#-ioLt%
归并排序: $q]:m+Fm
?-
5{XrNm
package org.rut.util.algorithm.support; =rV*iLy
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import org.rut.util.algorithm.SortUtil; ~N+bD
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/** QfuKpcT&
* @author treeroot ]bG8DEwD
* @since 2006-2-2 `zNvZm -E
* @version 1.0 p!MOp-;-
*/ l I&%^>
public class MergeSort implements SortUtil.Sort{ ;F@N2j#
uUUj?%
/* (non-Javadoc) T-)Ur/qp
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @;iW)a_M
*/ 5eI3a!E]O
public void sort(int[] data) { /lKgaq.
int[] temp=new int[data.length]; ^mLZT*
mergeSort(data,temp,0,data.length-1); !@9Vq6
} d&:ABI
N5$L),?\y
private void mergeSort(int[] data,int[] temp,int l,int r){ ?u/Uov@rD
int mid=(l+r)/2; fKzOt<wm
if(l==r) return ; [:x^ffs
mergeSort(data,temp,l,mid); gdupG
mergeSort(data,temp,mid+1,r); >5{Z'UWxh
for(int i=l;i<=r;i++){ lHBk&UN'
temp=data; 3;(6tWWLT
} +$KUy>
int i1=l; Np4';H
int i2=mid+1; G 3HmLz
for(int cur=l;cur<=r;cur++){ DBuvbq-
if(i1==mid+1) MS,J+'2
data[cur]=temp[i2++]; @B;2z_Y!l
else if(i2>r) kw8?::
<
data[cur]=temp[i1++]; 6b9 oSY-8
else if(temp[i1] data[cur]=temp[i1++]; /
AFn8=9'^
else 58"Cn ||tF
data[cur]=temp[i2++]; 5CZii=@
} e"u=4nk
} wu5]S)?*
Pa%;[hbn
} */iD68r|-
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改进后的归并排序: P9~7GFas|
=W(mZ#*vdY
package org.rut.util.algorithm.support; bce>DLF
$;1#gq%
import org.rut.util.algorithm.SortUtil; %./vh=5)
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/** UPs*{m
* @author treeroot ?{W@TY@S
* @since 2006-2-2 H#IJ&w|
* @version 1.0 zc&>RM
*/ jm1f,=R
public class ImprovedMergeSort implements SortUtil.Sort { 0xbx2jlkY
8<UD#i@:C
private static final int THRESHOLD = 10; %xtTh]s
a?bSMt}
/* }W{rDc kv
* (non-Javadoc) $2Y'[Dto\
* LeBuPR$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 413,O~^
*/ 1!,xB]v1Ri
public void sort(int[] data) { 3.M<ATe^
int[] temp=new int[data.length]; :<ye:P1s
mergeSort(data,temp,0,data.length-1); {&,9Zy]"S
} m6J7)Wp
*oAv:8"iY
private void mergeSort(int[] data, int[] temp, int l, int r) { S'>(4a
int i, j, k; +cQGX5 K
int mid = (l + r) / 2; iHoQNog-!
if (l == r) tsdkpt
return; cd1M0z
if ((mid - l) >= THRESHOLD) C8qA+dri
mergeSort(data, temp, l, mid); m\>531&
else U)~?/s{v
insertSort(data, l, mid - l + 1); zPWX%1Qr
if ((r - mid) > THRESHOLD) C$o#zu q-
mergeSort(data, temp, mid + 1, r); ydo"H9NOS
else qgd#BJ=
insertSort(data, mid + 1, r - mid); R)% Jr.U
+]^6&MqO
for (i = l; i <= mid; i++) { Pt~mpRlH
temp = data; s@^(1g[w`
} f/t1@d!
for (j = 1; j <= r - mid; j++) { 2P9gS[Ub
temp[r - j + 1] = data[j + mid]; &WN#HI."]
} d;`bX+K
int a = temp[l]; InDISl]
int b = temp[r]; =Nn&$h l
for (i = l, j = r, k = l; k <= r; k++) { IXYSZ)z
if (a < b) { Fm(~Vt;%u
data[k] = temp[i++]; (R)\
a = temp;
PZZTRgVc
} else { c,%9Fh?(
data[k] = temp[j--]; /fCj;8T3o
b = temp[j]; 1vlRzkd
} N1rBpt
} YEF|SEon0
} _:ypPRJ
R/8>^6
/** ("(:wYR%
* @param data >%jQw.
* @param l d#yb($HAJ
* @param i iXN"M` nhm
*/ Lc ,te1
private void insertSort(int[] data, int start, int len) { S-{3'D[Nj
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); F3*]3,&L
} Q+(}nz4
} 0{bGVLp
} ssVO+
T
} Qhlgu!
t5dk}sRF
堆排序: MQc|j'vEY
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package org.rut.util.algorithm.support;
19a/E1
2Qg.b-C
import org.rut.util.algorithm.SortUtil; ({=:
N
['%]tWT9
/** LX{[9
* @author treeroot a1]@&Dr
* @since 2006-2-2 A<ca9g3
* @version 1.0 6.? Ke8iC
*/ dKyJ.p
public class HeapSort implements SortUtil.Sort{ MONfA;64/
4%wP}Zj#
/* (non-Javadoc) My'u('Q%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~ _C[~-
*/ S#+Dfa`8X
public void sort(int[] data) { kL;sA'I:S
MaxHeap h=new MaxHeap(); [4uTp[U!r
h.init(data); <4,hrx&.
for(int i=0;i h.remove(); ,4$ZB(\
System.arraycopy(h.queue,1,data,0,data.length); L{fKZ
} r )8[LN-
`I+G7KK
private static class MaxHeap{ vt0XCUnK
{KJ !rT
void init(int[] data){ 6 R}]RuFQ
this.queue=new int[data.length+1]; W]Z;=-CBr
for(int i=0;i queue[++size]=data; HO ,z[6
fixUp(size); nG<_&h
} "&;>l<V
} a4HUP*
S]3K5Z|
private int size=0; ^Glmg}>q
?f!w:zp
private int[] queue; ql,k 5.l
(.~#bl
public int get() { bdh6ii
return queue[1]; #rSm;'%,
} 5B3S]@%
3 @XkO
public void remove() { XOsPKq
SortUtil.swap(queue,1,size--); A[QUFk(
fixDown(1); 6Yw;@w\
} cVjs-Xf7D%
file://fixdown FncK#hZ.
private void fixDown(int k) { M0[7>N_
int j; |sd0fTK
while ((j = k << 1) <= size) { 94bmKV_
if (j < size %26amp;%26amp; queue[j] j++; vR$[#`X
if (queue[k]>queue[j]) file://不用交换 3!_X FV
break; 9PXG*r|D
SortUtil.swap(queue,j,k); `I|$U)'
k = j; (V2~txMh
} K=|x"6\
} &NbhQY`k
private void fixUp(int k) { GSzb
while (k > 1) { 7:7i}`O
int j = k >> 1; E^kB|; Ki
if (queue[j]>queue[k]) \"!Fw)wj
break; vmW >$P
SortUtil.swap(queue,j,k); yVQ0;h
k = j; &AR@5M u
} ? <b>2j
} l-` M
9#
y[M<x5
} 13
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AlP}H~|M7
} ;.$AhjqiP
;hP43Bi
SortUtil: zu8
Zpfsh2`
package org.rut.util.algorithm; b1An2e[
\;&WF1d`ac
import org.rut.util.algorithm.support.BubbleSort; pVgzUu7
import org.rut.util.algorithm.support.HeapSort; ;a@%FWc
import org.rut.util.algorithm.support.ImprovedMergeSort; #R2wt7vE
import org.rut.util.algorithm.support.ImprovedQuickSort; iTTUyftHT
import org.rut.util.algorithm.support.InsertSort; lu~<pfg
import org.rut.util.algorithm.support.MergeSort; , y%!s27
import org.rut.util.algorithm.support.QuickSort; wrw4Uxq
import org.rut.util.algorithm.support.SelectionSort; t>nx#ErS
import org.rut.util.algorithm.support.ShellSort; 9<qAf`
[n%=2*1p
/** OV<'v%_&
* @author treeroot Q<4Sd:P`"
* @since 2006-2-2 ^0oOiZs
* @version 1.0 %K0
H?^.
*/ ;2Aqztp
public class SortUtil { $oF0[ }S
public final static int INSERT = 1;
DZPg|*KT
public final static int BUBBLE = 2; V~nqPh!Jc
public final static int SELECTION = 3; ^{f^%)X
public final static int SHELL = 4; 3d<Z##`{4
public final static int QUICK = 5; *F:f\9
public final static int IMPROVED_QUICK = 6; 7p"4rL
public final static int MERGE = 7; '3B"@^]
public final static int IMPROVED_MERGE = 8; ft |W
public final static int HEAP = 9; p6)Jzh_/
]70V
public static void sort(int[] data) { )4h4ql W
sort(data, IMPROVED_QUICK); Jz"Yb
} Rr>nka)U
private static String[] name={ < cNJrer
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" L\)GPTo!x
}; Y!!w*G9b
PfF5@W;E;
private static Sort[] impl=new Sort[]{ !2YvG%t^6
new InsertSort(), 3a|I| NP
new BubbleSort(), -^C^3pms
new SelectionSort(), be^+X[
new ShellSort(), -zn$h$N4
new QuickSort(), Z=c&</9e
new ImprovedQuickSort(), ),DLrGOl
new MergeSort(), {tE9m@[AF
new ImprovedMergeSort(), =;HC7TUM&
new HeapSort() Ql 2zC9C
}; T#M_2qJ1=
CEQs}bz
public static String toString(int algorithm){ 3^!Y9$y1
return name[algorithm-1]; \0)v5u
}
r Uau??
x-E@[=
public static void sort(int[] data, int algorithm) { =}F}XSvXH
impl[algorithm-1].sort(data); d8N{sT
} TwdY6E3`
Hl"^E*9x
public static interface Sort { eMHBY6<~=
public void sort(int[] data); $U*b;'o
} (U`<r-n\n
j Wpm"C
public static void swap(int[] data, int i, int j) { _bsAF^ ;
int temp = data; UnVYGch
data = data[j]; -l(G"]tRB
data[j] = temp; CdZS"I
} g
\;,NW^
} SN#Cnu}