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。 Ov<EOK+^
插入排序: <?8aM7W7
2&b?NqEeZ
package org.rut.util.algorithm.support; ;-]' OiS;
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import org.rut.util.algorithm.SortUtil; X>-|px$vy
/** VAD9mS^~
* @author treeroot ]:"<if gp$
* @since 2006-2-2 c2E*A+V#u
* @version 1.0 gPT<%F
*/ &d,!^9
public class InsertSort implements SortUtil.Sort{ "39\@Ow
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/* (non-Javadoc) \5
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^osXM`
*/ e #!YdXSx
public void sort(int[] data) { IoAG !cS
int temp; or<n[<D-C
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); fex<9'e
} D,hZVKa
} %$Smei
} j:>_1P/
|$:y8H'J
} '((pW
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冒泡排序: fFe{oR
.Ld{QPa
package org.rut.util.algorithm.support; ye^*Z>|
% S vfY {
import org.rut.util.algorithm.SortUtil; 1fOH$33
*DUP$@}k
/** >}7Ml
* @author treeroot V zTHW5B
* @since 2006-2-2 uB@~x Q_V
* @version 1.0 ZZ*+Tl\
s
*/ +x(~!33[G
public class BubbleSort implements SortUtil.Sort{ ^0tO2$
G4;5$YGG
/* (non-Javadoc) QWQJSz5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @{q:179w^
*/ I6e[K(7NY
public void sort(int[] data) { Cm"7f!(#
int temp; _c $F?9:
for(int i=0;i for(int j=data.length-1;j>i;j--){ h1
npaD!
if(data[j] SortUtil.swap(data,j,j-1); )45#lE3TH
} p6c&vEsNj
} {9Ug9e{
~
} %o
} [,0[\NC
2
r';)8:
} 4Q17vCC*n
V'^E'[Dd{
选择排序: MU>6s`6O
IQ\5!e
package org.rut.util.algorithm.support; /g)(
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import org.rut.util.algorithm.SortUtil; @#QaaR;4
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/** xOt
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* @author treeroot wTe 9OFv
* @since 2006-2-2 Q+7+||RW
* @version 1.0 BVzMgn;
*/ q}|_]R_y
public class SelectionSort implements SortUtil.Sort { !nDiAjj
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/* Am@:<J
* (non-Javadoc) tjg?zlj
* @%"r69\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3|Y2BAd
*/ e'|IRhr
public void sort(int[] data) { ZJ8"5RW
int temp; +z|@K=d#|
for (int i = 0; i < data.length; i++) { ER,!`C]
int lowIndex = i; ;_S
DW
for (int j = data.length - 1; j > i; j--) { H7
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if (data[j] < data[lowIndex]) { @]YEOk-
lowIndex = j; q.kDx_
} h?Lp9VF
} VA5f+c/ %
SortUtil.swap(data,i,lowIndex); ntQW+!s;P
} |Ae7wXOs
} &!F"3bD0
z?n6l7sH
} qVssw* GDB
^c]c`w
Shell排序: ^'p!#\T;H
?c<uN~fC=
package org.rut.util.algorithm.support; z|8zNt Ug
Qp9QSyMs}
import org.rut.util.algorithm.SortUtil; q"i]&dMr
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/** I7HGV(
* @author treeroot biG :Xn
* @since 2006-2-2 sIMN""@Y^
* @version 1.0 AC*SmQ\>!
*/ d&lT/S
public class ShellSort implements SortUtil.Sort{ A=sz8?K+`
8g {;o7
/* (non-Javadoc) Ept=&mJPu
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pVM1%n:#
*/ `CRF E5
public void sort(int[] data) { ~ike&k{
for(int i=data.length/2;i>2;i/=2){ #^tnRfS"
for(int j=0;j insertSort(data,j,i); 1)3'Y2N*
} RivhEc1h%
} .X5A7 m
insertSort(data,0,1); r4ljA@L
} X%5 `B2Wu
H<tU[U=G
/** H43d[@h
* @param data {e1sq^>|
* @param j kQp*+ras
* @param i 2FY]o~@
*/ $pIo`F _W
private void insertSort(int[] data, int start, int inc) { 4+89 M
int temp; dsOt(yNo
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); R8 LHwRQ
} n5#QQk2
} ^Rtxef
} F2{SC?U
/l+"aKW
2
} 7'gk=MQc
gD;T"^S+
快速排序: D< kf/hj
q8uq%wf
package org.rut.util.algorithm.support; u08j9)
,4
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import org.rut.util.algorithm.SortUtil; BSy{"K*M
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/** A
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* @author treeroot 1]Cdfj6@
* @since 2006-2-2 ~'|^|*}~Dj
* @version 1.0 bc NyB$S
*/ i'10qWz
public class QuickSort implements SortUtil.Sort{
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/* (non-Javadoc) ,Vl2U"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [mj=m?j
*/
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public void sort(int[] data) { CpK:u!
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quickSort(data,0,data.length-1); #s' `bF^
} HH0ck(u_A*
private void quickSort(int[] data,int i,int j){ &g>MZ"Z|
int pivotIndex=(i+j)/2; Ov4=!o=
file://swap K4o']{:U
SortUtil.swap(data,pivotIndex,j); Spu;
zo("v*d*q
int k=partition(data,i-1,j,data[j]); /sn
}Q-Zy2
SortUtil.swap(data,k,j); <f =<r*6
if((k-i)>1) quickSort(data,i,k-1); :5'hd^Q
if((j-k)>1) quickSort(data,k+1,j); WncHgz
;#+I"Ow
} 1]Cbi7
/** deq5u>
* @param data W7(5z
* @param i .t9`e=%
* @param j [ w-Tf&
* @return
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*/ X$G:3uoN
private int partition(int[] data, int l, int r,int pivot) { !I\eIV>0b
do{ S4c-i2Rq
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 2}bXX'Y
SortUtil.swap(data,l,r); W$Xr:RU
} m- a':
while(l SortUtil.swap(data,l,r); MmU`i ,z
return l; vl6|i)D
} #T8jHnI
YMy**
} 8zcSh/
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改进后的快速排序: pAqPHD=
wDSwcNS
package org.rut.util.algorithm.support; dd;rnev+
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import org.rut.util.algorithm.SortUtil; TKbfZw
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/** A>315!d"
* @author treeroot UUM:*X
* @since 2006-2-2 @MoCEtt
* @version 1.0 ux*G*QZ
*/ xRO9o3
public class ImprovedQuickSort implements SortUtil.Sort { [3ggJcUgW>
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private static int MAX_STACK_SIZE=4096; 69Z`mR
private static int THRESHOLD=10; <lU(9)
L;&
/* (non-Javadoc) WP Gp(Xw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \d:Uq5d)0
*/ BZKg:;9
public void sort(int[] data) {
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int[] stack=new int[MAX_STACK_SIZE]; 0S
}\ML
ar'VoL}
int top=-1; {w,<igh
int pivot; %s5(''a.
int pivotIndex,l,r; M1k_ldP
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stack[++top]=0; nE0I [T(
stack[++top]=data.length-1; mi5bk>o
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while(top>0){ 2#CN:b]+
int j=stack[top--]; )7AjRtb!/
int i=stack[top--]; .lI.I
ycEp,V;[Z
pivotIndex=(i+j)/2; 1-<?EOYaE
pivot=data[pivotIndex];
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SortUtil.swap(data,pivotIndex,j); .%\||1F<
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file://partition @ kba^z
l=i-1; Y9%zo~]-W'
r=j; ;L$l0(OO
do{ NID2$ p
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); nn">
SortUtil.swap(data,l,r); Iu;VFa
} u)/i$N
while(l SortUtil.swap(data,l,r); G!Y7RjWD
SortUtil.swap(data,l,j); EIg:@o&Jj
SpEu>9g&
if((l-i)>THRESHOLD){ u=#_8e(9Z
stack[++top]=i; ,ob)6P^rw
stack[++top]=l-1; 9IacZ
} Gq?>Bi;`
if((j-l)>THRESHOLD){ PA,\o8]x
stack[++top]=l+1; UVsF !0
stack[++top]=j; F7=&CW 0
} /q"8sj/
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}
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file://new InsertSort().sort(data); lXnv(3j3*s
insertSort(data); SK,UW6h
} Z[\nyj
/** ;`a~9uG
* @param data S3c%</'
*/ i[vOpg]J
private void insertSort(int[] data) { 8ROZ]Xh,x
int temp; 'puiahA
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); sB'~=1m^
} Wr4Ob*2iD
} - KaU@t
} E/>kvs%
sz4;hSTy
} rp!{QG
zZPXI&,
归并排序: V%FWZn^
!XF:.|
package org.rut.util.algorithm.support; v%E!
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import org.rut.util.algorithm.SortUtil; PD:lI]:s
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/** qtS+01o
* @author treeroot 1@^*tffL:
* @since 2006-2-2 -Vjrh/@
* @version 1.0 6>Is-/hsy
*/ 5VE9DTE
public class MergeSort implements SortUtil.Sort{ 9XN/ wp
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/* (non-Javadoc) [4\n(/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]_:j+6i
*/ BPypjS0?8
public void sort(int[] data) { #]s&[O43
int[] temp=new int[data.length]; 0JV|wd8j
mergeSort(data,temp,0,data.length-1); 0G#s/u#
} [d6TwKv
1&utf0TX6q
private void mergeSort(int[] data,int[] temp,int l,int r){ PO]c&}/
int mid=(l+r)/2; :qK^71gz
if(l==r) return ; >8w=Vlp
mergeSort(data,temp,l,mid); [^\HP]*Q{
mergeSort(data,temp,mid+1,r); N7dI}ju
for(int i=l;i<=r;i++){ PKX
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temp=data; j>|mpfU
} q,.@<s W
int i1=l; $6*6%T5}
int i2=mid+1; Rj])c^ZA'*
for(int cur=l;cur<=r;cur++){ ifcC
[.im
if(i1==mid+1) _F tI2G9
data[cur]=temp[i2++]; ?;CMsO*q
else if(i2>r) CdTE~O<)
data[cur]=temp[i1++]; n_P2l<F~/x
else if(temp[i1] data[cur]=temp[i1++]; xC -&<s
else "Rr650w[
data[cur]=temp[i2++]; \@GKVssw
} }\hz@G<
} '\/|K
eBg:[44V
} :Wd@Qy?;
tZ_D.syBAc
改进后的归并排序: i'uSu8$'*
LAU\.d
package org.rut.util.algorithm.support; 05Y4=7,!
m 9.BU2.
import org.rut.util.algorithm.SortUtil; )LjW=;(b
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/** -=a,FDeR
* @author treeroot {*AYhZ
* @since 2006-2-2 C=<PYkt,L
* @version 1.0 +$\/HO
*/ _REAzxeS
public class ImprovedMergeSort implements SortUtil.Sort { X.J$
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private static final int THRESHOLD = 10; M|}V6F_y
,]_<8@R
/* lkaWwjv_D
* (non-Javadoc) HCZVvsG
* 8;"HM5+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b+e9Pi*\
*/ #B!<gA$/
public void sort(int[] data) { WADAp\&
int[] temp=new int[data.length]; F$te5 `a
mergeSort(data,temp,0,data.length-1); ] Wx?k7T
} X}_Gk5q*
pra0:oHN
private void mergeSort(int[] data, int[] temp, int l, int r) { nIf~ds&TT
int i, j, k; y4j\y
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int mid = (l + r) / 2; ]jgMN7
if (l == r) ;U]Ym48
return; MWJ}
if ((mid - l) >= THRESHOLD) 0Q!/A5z
mergeSort(data, temp, l, mid); 8\Kpc;zb
else [K""6D
insertSort(data, l, mid - l + 1); s%i
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if ((r - mid) > THRESHOLD) F-%Hw
mergeSort(data, temp, mid + 1, r); ,C}s8|@k
else FqXE6^
insertSort(data, mid + 1, r - mid); @cu#rWiG
@!p0<&R@x
for (i = l; i <= mid; i++) { G|.6%-
temp = data; ;C,t`(
} {iYrC m[_
for (j = 1; j <= r - mid; j++) { WYd9p; k
temp[r - j + 1] = data[j + mid]; 3wN{k\ns
} qijQRxS
int a = temp[l]; ;.Y-e
Q,
int b = temp[r]; B,U|V
for (i = l, j = r, k = l; k <= r; k++) { @K1'Q!S*
if (a < b) { {h0T_8L/
data[k] = temp[i++]; /z`.- D(
a = temp; bi[g4,`Z;
} else { pMd!Jl#(N
data[k] = temp[j--]; 6o&ZS @
b = temp[j]; wWQt
} mjKu\7F
} <RuLIu
} E?S
6G7+&g`
/** )3.=)?XW
* @param data ;e6L@)dp9
* @param l epgAfx-_OH
* @param i rqz48~\lJ
*/ V-dyeb
private void insertSort(int[] data, int start, int len) { a%r( F
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); =
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} eh}|Wd7J
} GD%qrK?
} [*1:?mD$
} l~mj>$
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堆排序: yVWt%o/
T%4yPmY
package org.rut.util.algorithm.support; XZT|ID_u"
$}B&u )
import org.rut.util.algorithm.SortUtil; MavidkS
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/** +2>, -V
* @author treeroot |lN=q44I
* @since 2006-2-2 qtuT%?wT@Z
* @version 1.0 w|f@sB>j
*/ vI]V@il
public class HeapSort implements SortUtil.Sort{ 5Gm8U"UR
m[ER~]L/C
/* (non-Javadoc) ;
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .Hg{$SAC(w
*/ `aSbGMz
public void sort(int[] data) { I#;.;%u
MaxHeap h=new MaxHeap(); 2V*;=cv~z
h.init(data); EAHdt=8W{
for(int i=0;i h.remove(); MzF,is
System.arraycopy(h.queue,1,data,0,data.length); lQxEiDIL
} ?
M.'YB2
9{0%M
private static class MaxHeap{ :s1.TQ;Y(
!Wj`U$];
void init(int[] data){ E:;MI{;7
this.queue=new int[data.length+1]; -`$J& YU
for(int i=0;i queue[++size]=data; r{f$n
fixUp(size); Gn4XVzB`O
} y5 X FJj
} (a"/cH
OW#G{#.6R
private int size=0; `|mV~F|
Mm!;+bM%
private int[] queue; k>~D
v1/Y0
public int get() { ]Bs{9=2
return queue[1]; 93=?^
} ,;Uf>8~
kOC0d,
public void remove() { _Ud! tK*H
SortUtil.swap(queue,1,size--); ]W5p\(1g
fixDown(1); S;oRE'kk
} . BX*C
file://fixdown L uW""P/
private void fixDown(int k) { 7Hj7b:3K&!
int j; 1$^r@rP
while ((j = k << 1) <= size) { bf.yA:~U
if (j < size %26amp;%26amp; queue[j] j++; xrI9t?QaCb
if (queue[k]>queue[j]) file://不用交换 L-zU%`1{M
break; h92KU
SortUtil.swap(queue,j,k); [.6bxK
k = j; (W }DMcuSd
} /lhk}
y^
} (Ffa{Tt!
private void fixUp(int k) { ;|W:,a{kS
while (k > 1) { HVzkS|^F
int j = k >> 1; EVE"F'Ww,_
if (queue[j]>queue[k]) c= ?Tu
break; SLp nVD:'1
SortUtil.swap(queue,j,k); &|' NDcp
k = j; 4n1 g@A=y
} D *IeG>%
} 'I:_}q
Wtp=1
} j?g#8L;W\w
ej1WkaR8
} 7xR:\FBa^
N vTp1kI]
SortUtil: ^:,wk7
0QxBC7`qp
package org.rut.util.algorithm; *pAB dP+
Ndyo)11z
import org.rut.util.algorithm.support.BubbleSort; "KSdC8MS
import org.rut.util.algorithm.support.HeapSort; hZ.](rD
import org.rut.util.algorithm.support.ImprovedMergeSort; 7#X`D
import org.rut.util.algorithm.support.ImprovedQuickSort; (ak&>pk;
import org.rut.util.algorithm.support.InsertSort; 1^ go)(Mx
import org.rut.util.algorithm.support.MergeSort; pbIVj3-lY
import org.rut.util.algorithm.support.QuickSort; E>O@Bv
import org.rut.util.algorithm.support.SelectionSort; V|*3*W
import org.rut.util.algorithm.support.ShellSort; 5 PP^w~n
52^,qP'6
/** GiXs`Yt|
* @author treeroot jj]|}G
* @since 2006-2-2 t2|0no
* @version 1.0 )J2UNIgN
*/ oq b(w+<
public class SortUtil { }_H\75Iv
public final static int INSERT = 1; %b~ND?nn-
public final static int BUBBLE = 2; e AaS }g
0
public final static int SELECTION = 3; 2 zG;91^
public final static int SHELL = 4; m9]Ge]
public final static int QUICK = 5; VW;E14
public final static int IMPROVED_QUICK = 6; ZS`Kj(D
public final static int MERGE = 7; MmFtG-
public final static int IMPROVED_MERGE = 8; @x;(yqOb
public final static int HEAP = 9; rV?@Kgxi
2 gca*
public static void sort(int[] data) { H\a\xCP3
sort(data, IMPROVED_QUICK); ^g"p}zf
L"
} }wI+eMr
private static String[] name={ OI3j!L2f
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" JxEz1~WK &
}; &l4kwds R
Ug4o2n0sk
private static Sort[] impl=new Sort[]{ pd.unEWwF
new InsertSort(), pRUQMPn (
new BubbleSort(), cmq4w&x/
new SelectionSort(), A]drNFE
new ShellSort(), I7#JT?\}
new QuickSort(), 8U7dd[
new ImprovedQuickSort(), nwqA\
new MergeSort(), @gM}&G08
new ImprovedMergeSort(), 2!9Zw$
new HeapSort() T21?~jS
}; ] ;CJ6gM~
}OTJ{eG
public static String toString(int algorithm){ d>Nh<PqH6
return name[algorithm-1]; Q("4R
} }z|9F(I
7KJ0>0~Et
public static void sort(int[] data, int algorithm) { t~44ub6GN`
impl[algorithm-1].sort(data); DF
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} e"*ho[
nV`W0r(f'
public static interface Sort { 4^d).{&X
public void sort(int[] data); o|#F@L3i
} :2')`xT
Wt=@6w&
public static void swap(int[] data, int i, int j) { q:iu
hI$~G
int temp = data; 2"%f:?xV{
data = data[j]; L=M'QJl9
data[j] = temp; _>?.MUPB
} AN|f:259
} !$!%era`