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。 JVO,@~~
插入排序: d ;GF<bz
=b+W*vUAw
package org.rut.util.algorithm.support; HFV4S]U=
nSWW^ ;
import org.rut.util.algorithm.SortUtil; 3\J-=U
/** @k_xA-a
* @author treeroot 1_}*aQ
* @since 2006-2-2 F2QX ^*
* @version 1.0 tBSHMz
*/ k"-2OT
public class InsertSort implements SortUtil.Sort{ V-Ebi^gz5W
# fvt:iE
/* (non-Javadoc) 7]}n0*fe
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Qs24b
*/ NYS|fa
public void sort(int[] data) { rdK=f<I]
int temp; }:NE
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2, bo
} 7s#,.(s
}
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} * !4r}h`
6$#p}nE
} <3aiS?i.h
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冒泡排序: H^UuT
nt$VH
package org.rut.util.algorithm.support; m0I/X$-Cl5
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import org.rut.util.algorithm.SortUtil; O5^!\j.WR
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/** Y*!J +A#
* @author treeroot j<+QGd%
* @since 2006-2-2 &DnX6%2
* @version 1.0 RLuA^ONI
*/ JO*}\Es
public class BubbleSort implements SortUtil.Sort{ ,Jqi J?,4C
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/* (non-Javadoc) Uy8r
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q
a(>$. h
*/ N%8O9Dp8;
public void sort(int[] data) { &j4 1<A
int temp; S.,om;`
for(int i=0;i for(int j=data.length-1;j>i;j--){ ^Fmp"[q
if(data[j] SortUtil.swap(data,j,j-1); 5[^pU$Y
} AcF6p)@_
} P+tnXT>nE
} 1A>>#M=A
} Y",
:u@R
E+>$@STv#
} ;MD6iBD
GEJEhwO;H
选择排序: 5i 56J1EC
QFn .<@
package org.rut.util.algorithm.support; R $vo
@m*^v\q<u
import org.rut.util.algorithm.SortUtil; J!l/!Z>!cF
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/** <B,z)c
* @author treeroot p[kEFE,%
* @since 2006-2-2 aZK%?c
* @version 1.0 ko-:)z
*/ $w,&h:.p
public class SelectionSort implements SortUtil.Sort { 85$W\d
``l7|b jJ
/* (_2;}eg
* (non-Javadoc) )_$F/ug
* H}TzNs
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u 3&9R)J1
*/ 0FL PZaRP
public void sort(int[] data) { l Je=z
int temp; Q&p'\6~
for (int i = 0; i < data.length; i++) { Aw]W- fx
int lowIndex = i; Dwvd
for (int j = data.length - 1; j > i; j--) { pq<302uBQ
if (data[j] < data[lowIndex]) { 3v oas
lowIndex = j; )~(( 6?k4e
} xp+Z%0D
} {yPJYF_l
SortUtil.swap(data,i,lowIndex); B2}|b^'I
} R?,O h*
} MoIq)5/
7 (}gs?&w
} T@V<J'
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Shell排序: ?`jh5Kw%y
Xbm\"g \
package org.rut.util.algorithm.support; s@Q,
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import org.rut.util.algorithm.SortUtil; ^Q)&lxlxpx
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/** G}MJWf Hl
* @author treeroot l$j/Ye]
* @since 2006-2-2 5~AK+6Za
* @version 1.0 r-Nv<oH;
*/ Rh%c<</`0s
public class ShellSort implements SortUtil.Sort{ F=/@D)hND
;>#YOxPl
/* (non-Javadoc) Hchh2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *b<
a@
*/ 6Dx^$=Sa$
public void sort(int[] data) { ]yvHb)X
for(int i=data.length/2;i>2;i/=2){ `%PU_;Y5Q
for(int j=0;j insertSort(data,j,i); zOV.cI6fZz
} VeLuL:4I
} 6jdNQC$#B
insertSort(data,0,1); 6xFvu7L_c;
} ?8{x/y:
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/** K6C@YY(
* @param data X`REhvT
* @param j @wzzI 7}C
* @param i F_Pv\?35z
*/ g;|3n&
private void insertSort(int[] data, int start, int inc) { /hNZ7\|P
int temp; @zz4,,]
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); G)vq+L5%
} _[eAA4h
} 2swHJ.d\
} B~[}E]WEK
dZSv=UY)
} 3,Dc}$t
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快速排序: 0N" VOEvG
DH3.4EUWS
package org.rut.util.algorithm.support; @U~i<kt
Wr3).m52}P
import org.rut.util.algorithm.SortUtil; >= G{.H
Q Pel n)
/** ( !K?^si
* @author treeroot u{Z
4M3U
* @since 2006-2-2
+lK?)77f
* @version 1.0 G4VdJ(_
*/ ?9F_E+!
public class QuickSort implements SortUtil.Sort{ \(S69@f
mBp3_E.t
/* (non-Javadoc) PNjZbOmzS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }"V$li
*/ J.R|Xd
public void sort(int[] data) { =th(Hdk17
quickSort(data,0,data.length-1); -AJ$-y
} 0`{3|g
private void quickSort(int[] data,int i,int j){ dKKh ^D`~
int pivotIndex=(i+j)/2; Z9TUaMhF
file://swap Y?1
3_~
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SortUtil.swap(data,pivotIndex,j); eM3-S=R?<g
jbDap i<
int k=partition(data,i-1,j,data[j]); qHAZ)Tz
SortUtil.swap(data,k,j); 51,RbADB
if((k-i)>1) quickSort(data,i,k-1); ]8Eci^i
if((j-k)>1) quickSort(data,k+1,j); =V)88@W
BA1|%:.
} M9_G
/** `PV+.V}
* @param data 7W{xK'|]
* @param i 3 &aBU[
* @param j /b$0).fj@,
* @return Lc0U-!{G
*/ [<2#C#P:6
private int partition(int[] data, int l, int r,int pivot) { ,-4SVj8$P
do{ ?PMF]ah
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); CY"iP,nHl
SortUtil.swap(data,l,r); dn"&j1@KY
} pl-2O $
while(l SortUtil.swap(data,l,r); U c6]]Bbc
return l; 5tSR2gG#K,
} _tl,-}~
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} H
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改进后的快速排序: Q|!}&=
QG|KZ8uO
package org.rut.util.algorithm.support; vf|lF9@U
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import org.rut.util.algorithm.SortUtil; 0<,Q7onDD:
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/** pPC_ub
* @author treeroot 4 ^=qc99
* @since 2006-2-2 |GDf<\
* @version 1.0 [(hB%x_"
*/ lbRm(W(
public class ImprovedQuickSort implements SortUtil.Sort { GaD]qeS-K
`u. /2]n
private static int MAX_STACK_SIZE=4096; j K!Y-
private static int THRESHOLD=10; 9PU9BYBG
/* (non-Javadoc) ]m>N!Iu
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v7V.,^6+
*/ z>,fuR?9
public void sort(int[] data) { 500qg({2]
int[] stack=new int[MAX_STACK_SIZE]; 3Zr'Mn
+[=yLE#P%
int top=-1; ;yc|=I^
int pivot; g^CAT1}
int pivotIndex,l,r; S$=e %c
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stack[++top]=0; Ab"mX0n
stack[++top]=data.length-1; DgJG: D{
%LL*V|
while(top>0){ ylV.ZoY6
int j=stack[top--]; EB/.M+~a
int i=stack[top--]; ?=UIx24W
eX+FtN
pivotIndex=(i+j)/2; rvdhfM!-A
pivot=data[pivotIndex]; [i8,rOa7
z3RlD"F1
SortUtil.swap(data,pivotIndex,j); _$W</8<
cH5@Jam
file://partition SS4'yaQ
l=i-1; g _2m["6*
r=j; )2U#<v^
do{ @iW^OVpp<8
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 'G.^g}N1
SortUtil.swap(data,l,r); !A. Kb74
} ]h
Dy]
while(l SortUtil.swap(data,l,r); b),_rr
SortUtil.swap(data,l,j); F(-1m A&-
S`!MoIMsD
if((l-i)>THRESHOLD){ 6Y#V;/gK!5
stack[++top]=i; 4z~%gt74O]
stack[++top]=l-1; &HPzm6.3
} 33R_JM{
if((j-l)>THRESHOLD){ /,>@+^ 1
stack[++top]=l+1; ""j(wUp-W
stack[++top]=j; >=|;2*9v
} ?z:Xdx\l
,| \62B`
} -n C
5
file://new InsertSort().sort(data); OT&mNE4
insertSort(data); X(b"b:j'
} [n53eC
/** if
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* @param data 2n9E:tc
*/ <lx~/3<m
private void insertSort(int[] data) { \Ty%E<
int temp; bt$+l[U^J
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /K#t$O4
} a"!D @a
} ]Z@+
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} vFKt=o$ g
O_PKS$sz{
} l
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归并排序: ~}SOd<n)|
UUxDW3K
package org.rut.util.algorithm.support; ..ig jc#UF
/r4QDwu
import org.rut.util.algorithm.SortUtil; aZe[Nos
yM3]<~m
/** Qi_De
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* @author treeroot 2|fN*Wm
* @since 2006-2-2 (HHVup1f
* @version 1.0 -?8;-h, h
*/ )xJo/{?
public class MergeSort implements SortUtil.Sort{ "TWNit
)8H5ovj.
/* (non-Javadoc) zUw9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c`'2
*/ }v'jFIkhI
public void sort(int[] data) { $X.X_
int[] temp=new int[data.length]; EW* 's(
mergeSort(data,temp,0,data.length-1); PV2cZ/
} l!B)1
:Sh>
private void mergeSort(int[] data,int[] temp,int l,int r){ iU5Aj:U3
int mid=(l+r)/2; qlT'gUt=H
if(l==r) return ; G3j&8[
mergeSort(data,temp,l,mid); hRn[ 9B
mergeSort(data,temp,mid+1,r); DqLZc01>
for(int i=l;i<=r;i++){ :v_H;UU
temp=data; [l+1zt0w0
} F5CV<-jB
int i1=l; 0G(T'Z1
int i2=mid+1; +^St"GWY
for(int cur=l;cur<=r;cur++){ {9 >jWNx
if(i1==mid+1) @K 8sNPK
data[cur]=temp[i2++]; d83K;Ryd
else if(i2>r) zc<C %t[~y
data[cur]=temp[i1++]; !MOgM
else if(temp[i1] data[cur]=temp[i1++]; >L#HE
else \O"EK~x}/
data[cur]=temp[i2++]; kf3yJP/
} W$x'+t5H
} H3=U|wr|
UB3b
} $K)9(DD
0|0<[:(hc
改进后的归并排序: u vo2W!
#+2|ZfCn%
package org.rut.util.algorithm.support; wvAXt*R
>Q0HqOq
import org.rut.util.algorithm.SortUtil; '_z#}P<
~-+lZ4}
/** %ZF6%m0S
* @author treeroot g-c\;
* @since 2006-2-2 HvWnPh1l
* @version 1.0 rPV\ F
*/ Pg3O )D9
public class ImprovedMergeSort implements SortUtil.Sort { fP41B
ZJotg*I
private static final int THRESHOLD = 10; *o8DfZ
6Xjr0C+
/* Nz+Jf57t
* (non-Javadoc) EUvxil
* b|i94y(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zOR
*/ <r*A(}Y
public void sort(int[] data) { 33O@jbs@
int[] temp=new int[data.length]; /aepE~T
mergeSort(data,temp,0,data.length-1); l<7)uO^8
} MB,;HeP!
_v2K1 1
private void mergeSort(int[] data, int[] temp, int l, int r) { ,!"\L~6
int i, j, k; Z8??+d=
int mid = (l + r) / 2; mlgw0
if (l == r) ?]S!-6:
return; '1{#I/P;
if ((mid - l) >= THRESHOLD) sjLI^#a
mergeSort(data, temp, l, mid); :@6,|2be=
else h"S+8Y:1{k
insertSort(data, l, mid - l + 1); `[JX}<~i
if ((r - mid) > THRESHOLD) Re <G#*^
mergeSort(data, temp, mid + 1, r); M[ea!an
else *$nz<?
insertSort(data, mid + 1, r - mid); 4_3
DQx9s
y0Pr[XZ
for (i = l; i <= mid; i++) { gB!K{ Io'
temp = data; m:77pE&o
} @g*=xwve=~
for (j = 1; j <= r - mid; j++) { f`X#1w9
temp[r - j + 1] = data[j + mid]; &xF 2!t`
} dU]>
int a = temp[l]; gt3;Xi
int b = temp[r]; >pKu
G#
for (i = l, j = r, k = l; k <= r; k++) { Zy2@1-z6
if (a < b) { Dm':D
data[k] = temp[i++]; SSANt?\Z<
a = temp; w,
u`06
} else { [c@14]e
data[k] = temp[j--]; }hOExTz
b = temp[j]; 3AWNoXh
} |C9qM
} 9,|&+G$
} L3M]06y
H4'xxsx
/** DCfV
* @param data ,*fvA?
* @param l EQ&E C
* @param i <tZPS`c'_
*/ 1MdVWFKXV
private void insertSort(int[] data, int start, int len) { \*#9Ry^f
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); UOrfwK
} jP6;~[rl
} .^^YS$%%7
} ;|v6^2H"
} ]*+ozAG4
rIz"_r
堆排序: zmI?p4,
XfFZ;ul
package org.rut.util.algorithm.support; `,
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!*wK4UcX"
import org.rut.util.algorithm.SortUtil; b'Gn)1NE
6KmF 9
/** kW&{0xkGR
* @author treeroot <o5+*X
* @since 2006-2-2 rm*Jo|eH`
* @version 1.0 $l:?(&u
*/ $smzP.V
public class HeapSort implements SortUtil.Sort{ -`6O(he
<Tr_,Ya{9
/* (non-Javadoc) 7~[1%`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4
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*/ zO`54^
public void sort(int[] data) { u]P0:)tS.
MaxHeap h=new MaxHeap(); STp}?Cb
h.init(data); VIL #q
for(int i=0;i h.remove(); Ml8 '=KN_
System.arraycopy(h.queue,1,data,0,data.length); ANh5-8y
} >\b=bT@iM
=)C}u6
private static class MaxHeap{ (
q^umw
W`],
void init(int[] data){ 8Pklw^k
this.queue=new int[data.length+1]; RRy3N
)HR
for(int i=0;i queue[++size]=data; Fs7/3
fixUp(size); >G<AyS&z*
} zH8l-0I+$
} JZ&]"12]fR
DUiqt09`~
private int size=0; fL4F
~@`9l
=8 d`qS"
private int[] queue; ):C4"2l3
}' `2C$
public int get() { A(#hyb#
return queue[1]; .H+`]qLkL
} 6/9 A' !4C
aX6.XHWbDf
public void remove() { NL))!Pi
SortUtil.swap(queue,1,size--); &;7\/m*W1
fixDown(1); ( B$;'U<
} o
Wg5-pMWZ
file://fixdown Nzz" w_#
private void fixDown(int k) { uj_uj!
int j; r?d601(fa
while ((j = k << 1) <= size) { 6l IFxc
if (j < size %26amp;%26amp; queue[j] j++; M")v ph^
if (queue[k]>queue[j]) file://不用交换 @#ih;F
break; 39?iX'*p
SortUtil.swap(queue,j,k); PL<q|y
k = j; *nD yB.(
} f+Nq?GvwBQ
} CDei+ q
private void fixUp(int k) { iUqL /
while (k > 1) { >:5/V0;,
int j = k >> 1; AEm?g$a
if (queue[j]>queue[k]) ;5-Sn(G
break; kc `Q-
N}
SortUtil.swap(queue,j,k); nn$,|/
k = j; D
%~s
} >1xlP/4jx
} he&*N*of:
M~;Ww-./
} hRSRz5 J}
YSk,kU
} <T:u&Ic
OUn,URI
SortUtil: R@t?!`f!+
UO8#8
package org.rut.util.algorithm; Z2`(UbG}
e4Ol:V
import org.rut.util.algorithm.support.BubbleSort; u*Eb4
import org.rut.util.algorithm.support.HeapSort; /r Zj=
import org.rut.util.algorithm.support.ImprovedMergeSort; UceZWtYa
import org.rut.util.algorithm.support.ImprovedQuickSort; C/ow{MxA
import org.rut.util.algorithm.support.InsertSort; 30g-J(Zg
import org.rut.util.algorithm.support.MergeSort; )Z0pU\
import org.rut.util.algorithm.support.QuickSort; <oTIzj7f
import org.rut.util.algorithm.support.SelectionSort; `TKe+oS)
import org.rut.util.algorithm.support.ShellSort; a/X@5kr{
"#d}S)GlXM
/** I
:%(nKBK
* @author treeroot e m<(wJ-Y
* @since 2006-2-2 ^.Vq0Qzy]
* @version 1.0 z+&mMP`-
*/ ?n>h/[/
public class SortUtil { AM*V4}s*9k
public final static int INSERT = 1; i3s-l8\\z
public final static int BUBBLE = 2; FSd842O
public final static int SELECTION = 3; rC}r99Pe:x
public final static int SHELL = 4; 6~V$0Y>]
public final static int QUICK = 5; YY{S0jnhF
public final static int IMPROVED_QUICK = 6; Gr&5 mniu
public final static int MERGE = 7; bTE%p0
public final static int IMPROVED_MERGE = 8; [GZ%K`wx
public final static int HEAP = 9; z'3
2 Q,e1'=
public static void sort(int[] data) { M?x/C2|
sort(data, IMPROVED_QUICK); |2AK~t|t
} j%Y`2Ra
private static String[] name={ i}N'WV`!
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ([iMOE[D3
}; `Q^G
k{9P
>%x7-->IB
private static Sort[] impl=new Sort[]{ ] 7_ f'M1F
new InsertSort(), "zJ1vIZY
new BubbleSort(), _/MHi-]/.
new SelectionSort(), 8-UlbO6
new ShellSort(), wlKfTJrn&
new QuickSort(), G+[hE|L~y
new ImprovedQuickSort(), Vq2d+
,fb
new MergeSort(), E(*RtOC<W
new ImprovedMergeSort(), QNJ )HNLp
new HeapSort() _CDUUr
}; i5w
XLz>h(w=
public static String toString(int algorithm){ ihBlP\C
return name[algorithm-1]; i&$L$zf,
} Zm!T4pL
)8p FPr
public static void sort(int[] data, int algorithm) { fB|rW~!v
impl[algorithm-1].sort(data); cU?A|'
} bEyZRG
eaCv8zdX
public static interface Sort { AK%`EsI^
public void sort(int[] data); l_5]~N
} *=mtt^yZ
8-3]Bm!
public static void swap(int[] data, int i, int j) { 9^QiFgJy
int temp = data; iyAeR!`
data = data[j]; DX l3
data[j] = temp; <XiHQ
B!
} e82SG8#]
} thIuK V{CO