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。 o Xm
!
插入排序: ?Lg(,-:
)]P(!hW.
package org.rut.util.algorithm.support; :F:1(FDP
h1_Z&VJ
import org.rut.util.algorithm.SortUtil; }-oba_
/** \|,| )
* @author treeroot yx]9rD1cz
* @since 2006-2-2 :c/54Ss~
* @version 1.0 uBlPwb,V
*/
(Q8!5s
public class InsertSort implements SortUtil.Sort{ jYp!?%!
?%6oM
/* (non-Javadoc) {+67<&g
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~IhM(Q*mO!
*/ m]n2wmE3n
public void sort(int[] data) { UA$IVK&{
int temp; QEr<(wM-y
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~Gfytn9x.;
} MltO.K!
} $*0-+h
} ^\}qq>_
m4/qxm"Dx:
} Vm%G
q
`Z;Z^c
冒泡排序: '[#y|
-pC'C%Q
package org.rut.util.algorithm.support; vG_R( ]d
@62,.\F
import org.rut.util.algorithm.SortUtil; GAj%o]}u
Skt-5S#
/** wMVUTm
* @author treeroot 91]|4k93
* @since 2006-2-2
n4{%M
* @version 1.0 +9Tc.3vQ
*/ =dGp&9K,fw
public class BubbleSort implements SortUtil.Sort{ pCE
GZV,d@
KuP#i]Na
/* (non-Javadoc) \GL] I.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5Y *4a%"
*/ 6|eqQ+(A
public void sort(int[] data) { Tw-NIT)
int temp; WGv 47i
for(int i=0;i for(int j=data.length-1;j>i;j--){ KqGb+N-@
if(data[j] SortUtil.swap(data,j,j-1); ~[Tcl
} GQbr}xX.#
} J+P<zC
} tW UI?\
} <U3X4)r
@vl$[Z|
} ;^ME
NVMn7H}>
选择排序: w
% Hj'
6m_mma_,&
package org.rut.util.algorithm.support; j-K[]$
lx+;<la
import org.rut.util.algorithm.SortUtil; H,%bKl#
FSM M
/** Ph=NH8
* @author treeroot HA0!>_I dC
* @since 2006-2-2 :Qge1/
* @version 1.0 FOG{dio
*/ RhowhQ) G
public class SelectionSort implements SortUtil.Sort { \foThLx
cpOt?XYR~
/* hL3up] pZ
* (non-Javadoc) 64u(X^i
* FsED9+/m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )J 'F]s
*/ lq9|tt6Z
public void sort(int[] data) { nq!=9r
int temp; "B3jq^
for (int i = 0; i < data.length; i++) { C'I&<
int lowIndex = i; 3=
=["hO
for (int j = data.length - 1; j > i; j--) { ,!{8@*!=s
if (data[j] < data[lowIndex]) { =p;cJ%#2]'
lowIndex = j; ;KQU%
k$
} ":/c|!
} J@-'IJ
SortUtil.swap(data,i,lowIndex); )]fiyXA
} -YQh
F;/
} b\"F6TF:
6:2* <
} RnH?95n?{
{?yVA
Shell排序: ^Gd1T
%r[`HF>
package org.rut.util.algorithm.support; O&7.Ry
m
;{I9S'
import org.rut.util.algorithm.SortUtil; @}q, ';H7
li%@HdA!
/** 0cmd +`
* @author treeroot Nr*l3Z>LD
* @since 2006-2-2
LgF?1?
* @version 1.0 QP'sS*saJ
*/ 2 ,nhs,FZ
public class ShellSort implements SortUtil.Sort{ Ic&~iqQ
i*|HN"!
/* (non-Javadoc) @|:fm()
<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8|Tqk,/pD
*/ *)Pm
public void sort(int[] data) { WXxnOLJr
for(int i=data.length/2;i>2;i/=2){ )x!q;^Js9A
for(int j=0;j insertSort(data,j,i); 5, ;\zSz
} u{4P)DIQ
} +'m9b7+v
insertSort(data,0,1); ajycYk9<m
} :P-H8*n""
}[eUAGhDU
/** 3V]dl)en%
* @param data PY.HZ/#d
* @param j uf?;;wg
* @param i G
`|7NL
*/ __}SHU0R
private void insertSort(int[] data, int start, int inc) { r^Ra`:ca
int temp; gOg7:VPG
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ]C^ #)7
} I;@q`Tm
} mPA)G,^
} GSRf/::I}4
M
%,\2!$
} q;9X8 _
p.:|Z-W$
快速排序: &W>\Vl1
diXWm-ZKL
package org.rut.util.algorithm.support; #f(a,,Uu'
"7sv@I_j
import org.rut.util.algorithm.SortUtil;
(7X
QI[WXxp
/** :0@0muo
* @author treeroot _EMXx4J
* @since 2006-2-2 4]1/{</B|
* @version 1.0 6?,qysm06
*/ ~;oXLCL0})
public class QuickSort implements SortUtil.Sort{ SXsszb:_
B}04E^
/* (non-Javadoc) |4DN2P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N@PuC>
*/ E#P#{_BR^
public void sort(int[] data) { w#1BHx
quickSort(data,0,data.length-1); }h1BAKg
} {eU>E/SQ
private void quickSort(int[] data,int i,int j){ p@78Xmu?q
int pivotIndex=(i+j)/2; ,xU#uyB
file://swap vs8[352
SortUtil.swap(data,pivotIndex,j); E0qJ.v
3sV$#l P
int k=partition(data,i-1,j,data[j]); =RUy4+0>F
SortUtil.swap(data,k,j); F+Kju2
if((k-i)>1) quickSort(data,i,k-1); HxK'u4I
if((j-k)>1) quickSort(data,k+1,j); 7s%D(;W_Mo
3z0Bg
} QV."ZhL5 =
/** KF&8l/f
* @param data npeL1zO-$
* @param i r~=+>,
_
* @param j 3q4VH q
* @return 1[OY -G
*/ MVMJl ">
private int partition(int[] data, int l, int r,int pivot) { :[l}Bb,
do{ $-DW+|p.?^
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); A23K!a2u&
SortUtil.swap(data,l,r); eLT3b6'"?
} ~V(>L=\V;
while(l SortUtil.swap(data,l,r); 8/2Wq~&
return l; t_ CMsp
} #>_t[9;
mqeW,89
} ();Z,A
ecm+33C
改进后的快速排序: >W+,(kAS
e }O&_j-
package org.rut.util.algorithm.support; VXCB.C"
53/$8=
import org.rut.util.algorithm.SortUtil; 0qR#o/~I
W+u@UJi
/** @j\;9>I/
* @author treeroot ;|T|*0vY[
* @since 2006-2-2 Z^]Oic/0Oa
* @version 1.0 u9:sj
*/ oG22;
public class ImprovedQuickSort implements SortUtil.Sort { euY+jc%
K:XXtG
private static int MAX_STACK_SIZE=4096; yq, qS0Fo
private static int THRESHOLD=10; &T-:`(
/* (non-Javadoc) <Y /3U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DaH4 Br.2
*/ :M;|0w*b
public void sort(int[] data) { MuO(%.H
int[] stack=new int[MAX_STACK_SIZE]; %D-!<)z
N]8/l:@
int top=-1; qKXg'1#E)
int pivot; 1grcCL
q
int pivotIndex,l,r; -DGuaUU
F+c8
O
stack[++top]=0; ?b d&Av
stack[++top]=data.length-1; /slCK4vFc
H1~9f{
while(top>0){ &hVf=We
int j=stack[top--]; a@|`!<5
int i=stack[top--]; tZ) ,Z<
DFfh!KKR$
pivotIndex=(i+j)/2; x15&U\U
pivot=data[pivotIndex]; %eF=;q
c&#Q`m
SortUtil.swap(data,pivotIndex,j); GwgY{-|`
/hg^hF
file://partition 11S{XbU
l=i-1; `$4wm0G|
r=j; %b
pQ=
do{ Hv"qRuQ?[
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); z+fy&NPl
SortUtil.swap(data,l,r); b7'A5]X
} cooicKS7
while(l SortUtil.swap(data,l,r); ='I2&I,)
SortUtil.swap(data,l,j); {'P?wv
\Ogs]4
if((l-i)>THRESHOLD){ 7F]oK0l_
stack[++top]=i; -iy17$
stack[++top]=l-1; 3-y2i/4}$
} V
7 p{'C
if((j-l)>THRESHOLD){ rk+s[Qi~
stack[++top]=l+1; 9-#=xE9'U
stack[++top]=j; ty;a!yjC
} !K.)Qr9 V
G"J
8i|~
} 6 X2w)cO
file://new InsertSort().sort(data); 1jK2*y
insertSort(data); \Pfm>$Ib=
} L$Xkx03lz>
/** 3DjX0Dx/l
* @param data 4d`f?8vS
*/ gT fA]
private void insertSort(int[] data) { /xg1i1Et
int temp; *Ta
{
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); G #$r)S
} tR=1.M96Y
} =?M{B1;H
} 'uqY%&U
ZjK'gu8*
} @gx]3t*]I
YFcMU5_F
归并排序: |Ntretz`\
!':y8(Ou
package org.rut.util.algorithm.support; P` CQ)o
]<iD'=a
import org.rut.util.algorithm.SortUtil; >.gT9
#cl|5jm+m#
/** IjPtJwW`A
* @author treeroot QF.M%she+
* @since 2006-2-2 q\s>Oe6$
* @version 1.0 1N.weey}W
*/ 27JZwlzZ
public class MergeSort implements SortUtil.Sort{ i:R_g]
0;5qo~1
/* (non-Javadoc) utdus:B#0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0d,&)
*/ ,PWMl[X
public void sort(int[] data) { 0VgsV;
int[] temp=new int[data.length]; )P W Zc?M
mergeSort(data,temp,0,data.length-1); |'k7 ;UW
} jjoyMg95
]D>\Z(b
private void mergeSort(int[] data,int[] temp,int l,int r){ x50ZwV&j
int mid=(l+r)/2; 78'3&,+si
if(l==r) return ; N,ihQB5
mergeSort(data,temp,l,mid); Xj6?,J
mergeSort(data,temp,mid+1,r); n~yhX%=_Du
for(int i=l;i<=r;i++){ `g'9)Xf4KT
temp=data; TwZmZE ?!
} !5zj+N
int i1=l; \S#![NC
int i2=mid+1; Q=498Y~x
for(int cur=l;cur<=r;cur++){ ynq^ztBVe
if(i1==mid+1) $.Qq:(O:6
data[cur]=temp[i2++]; d-UQc2r
else if(i2>r) Eye.#~
data[cur]=temp[i1++]; #
i|pi'Ij
else if(temp[i1] data[cur]=temp[i1++]; .gwT?O,
else CVgVyy^
data[cur]=temp[i2++]; OYIH**?
} 35#"]l"
} ]#O~lq
Kb#Z(C9
} csv;u'
u3vw[k
改进后的归并排序: mm`yu$9gbP
hRktvO)K
package org.rut.util.algorithm.support; *edhJUT
hLSas#B>
import org.rut.util.algorithm.SortUtil; G8CM
JN<u4\e{-&
/** D7,{p2<2T
* @author treeroot u`Zj~t
* @since 2006-2-2 m@c\<-P
* @version 1.0 /80RO:'7
*/ KZsJ_t++!W
public class ImprovedMergeSort implements SortUtil.Sort { lT-LOu|
!-|{B3"6
private static final int THRESHOLD = 10; `yua?n
RATW[(ZA
/* 8(GJz ~y
* (non-Javadoc) 0(az 80
p
* idP2G|Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5l
/EZ\q
*/ vt2A/9_Z%
public void sort(int[] data) { ~&8bVA= .
int[] temp=new int[data.length]; ":Ll.=!
mergeSort(data,temp,0,data.length-1); uKpWb1(
} sxn^1|O;m
_*dUH5
private void mergeSort(int[] data, int[] temp, int l, int r) { :J;*]o:
int i, j, k; J*r%b+
int mid = (l + r) / 2; \9jvQV/y
if (l == r) r|0wIpi6Q
return; [f@[gE
if ((mid - l) >= THRESHOLD) H1kxY]_/
mergeSort(data, temp, l, mid); aiwKkf`\
else P4 dhP-t
insertSort(data, l, mid - l + 1); ]c$)0O\O
if ((r - mid) > THRESHOLD) M@78.lPS
mergeSort(data, temp, mid + 1, r); H6%%n
X
else DH{^9HK
insertSort(data, mid + 1, r - mid); z+qrsT/?L
Y.v. EZ
for (i = l; i <= mid; i++) { .l ufE
temp = data; +OX:T) 4h6
} J^<}fRw
for (j = 1; j <= r - mid; j++) { 4ai|*8.
temp[r - j + 1] = data[j + mid]; dhmZ3 ~cW>
} 3!0~/8!f@
int a = temp[l]; 0l>4Umxr{J
int b = temp[r]; *Bm
_
for (i = l, j = r, k = l; k <= r; k++) { 6-h(305A
if (a < b) { q, XRb
data[k] = temp[i++]; We*&\e+"T
a = temp; <vUhJgN2/
} else { ;dE'# Kb
data[k] = temp[j--]; Ij9ezNZT=
b = temp[j]; Y>2kOE
} { x/~gp
} qD<\U
} f{eMh47 NC
i*ErxWzu
/** pLea 4
* @param data [|"{a
* @param l }0z]sYI
* @param i hqVxvS"
*/ KBkS>0;X
private void insertSort(int[] data, int start, int len) { b?{ \t;
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); EQ>] ~
} &R;Cm]jt
} iW,fKXuo&y
} `M.\ D
} , UiA?7k
|v31weD8
堆排序: t1MK5B5jH
N#zh$0!8bJ
package org.rut.util.algorithm.support; TZYz`l+v
~gJJ@j 0n
import org.rut.util.algorithm.SortUtil; <b$.{&K
}6!*H!
/** 40)Ti
* @author treeroot 4fa2_
* @since 2006-2-2 b!3Y<D*
* @version 1.0 ;j^C35
*/ 8ZPjzN>c6
public class HeapSort implements SortUtil.Sort{ mKN#dmw6
N!iugGL
/* (non-Javadoc) -J\R}9 lIm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qVMBZ\`Qm
*/ bL9vjD'}
public void sort(int[] data) { ;'~GuZ#I
MaxHeap h=new MaxHeap(); 9E-]S'Z
h.init(data); r;
pS_PV
for(int i=0;i h.remove(); [OK(
System.arraycopy(h.queue,1,data,0,data.length); J.^%VnrFO9
} _m2p>(N|
AIX?840V
private static class MaxHeap{ "{"745H5
eUeOyC
void init(int[] data){ N^;rLrm*
this.queue=new int[data.length+1]; " }oH3L
for(int i=0;i queue[++size]=data; =LHz[dSL
fixUp(size); _,{R3k
} u#r[JF9LP
} +4]31d&3
h}knn3"S
private int size=0; Q8>
"ukiuCfVuW
private int[] queue; M:QM*?+)
3yp?|>e
public int get() { L
j>HZS$F
return queue[1]; O|I)HpG;
} 7ts`uI<E@7
oW\kJ>!
public void remove() { Wd<|DmSy
SortUtil.swap(queue,1,size--); .qAlPe L:
fixDown(1); $G}!eV
6
} d:SLyFD$q
file://fixdown h}SP`
private void fixDown(int k) { k^C^.[?
int j; VS
?n pH
while ((j = k << 1) <= size) { z(g6$Y{
if (j < size %26amp;%26amp; queue[j] j++; ~H1ZQ[
if (queue[k]>queue[j]) file://不用交换 MR`lF-|a|
break; 5%1a!MM
M
SortUtil.swap(queue,j,k); }I>h<O
k = j; Tw0GG8(c
} U1 ;<NUg
} 3Eu;_u_
private void fixUp(int k) { $l+DkR+
while (k > 1) { +\/1V`
int j = k >> 1; Wt
1]9{$
if (queue[j]>queue[k]) #[$zbZ(I>:
break; dJ&f +
SortUtil.swap(queue,j,k); Ka+N5 T.f
k = j; [B+]F~}@
} eb#p-=^KP
} +u\kTn
yh:Wg$qx
} SQ0?M\D7
}K'gjs/N;
} |rr<4>)X
fs,]%g^
SortUtil: jhF&
X5w_ }Nhe
package org.rut.util.algorithm; ])tUXU>
Wkj0z]]?
import org.rut.util.algorithm.support.BubbleSort; x?rn<=
import org.rut.util.algorithm.support.HeapSort; 2.PZtl
import org.rut.util.algorithm.support.ImprovedMergeSort; OLs<]0H
import org.rut.util.algorithm.support.ImprovedQuickSort; K);)$8K
import org.rut.util.algorithm.support.InsertSort; =%Z5"];
import org.rut.util.algorithm.support.MergeSort;
A\:u5(
import org.rut.util.algorithm.support.QuickSort; |zCT~#
import org.rut.util.algorithm.support.SelectionSort; 4157!w'\y
import org.rut.util.algorithm.support.ShellSort; U *K6FWqiB
V AnP3:
/** >Sc/E}3
* @author treeroot "%E<%g
* @since 2006-2-2 KbTd`AIL
* @version 1.0 unD.t
*/ |D1:~z
public class SortUtil { 4];<`
%
public final static int INSERT = 1; ,d`6
{ll
public final static int BUBBLE = 2; YHQvx_0yP
public final static int SELECTION = 3; tRu j}n+x
public final static int SHELL = 4; Uy98lv
public final static int QUICK = 5; @t{`KB+
^
public final static int IMPROVED_QUICK = 6; mIh >8))E
public final static int MERGE = 7; hSgH;k
public final static int IMPROVED_MERGE = 8;
e]DuV)k&
public final static int HEAP = 9; Bj*\)lG<
qac8zt#2
C
public static void sort(int[] data) { {v>8Kp7_R
sort(data, IMPROVED_QUICK); GJ Takhj3
} P1qQ)-J
private static String[] name={ aGbHDo
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" !))!!{
}; HnsPXF'8g
K=N8O8R$y
private static Sort[] impl=new Sort[]{ t/B4?A@C
new InsertSort(), U~I
y),5
new BubbleSort(), Rv)*Wo!L
new SelectionSort(), nI7v:h4
new ShellSort(), A~M .v0
new QuickSort(), ,,=VF(@G
new ImprovedQuickSort(), F!7\Za,
new MergeSort(), ?A]/
M~3B
new ImprovedMergeSort(), $w+()iI
new HeapSort() k3CHv =U{
}; 6;Sz^W
Jt(RF*i
public static String toString(int algorithm){ 7KJ%-&L^
return name[algorithm-1]; ^@HWw@GA
} 31&;3?3>
-^ R?O
public static void sort(int[] data, int algorithm) { )K!!Zq3;|
impl[algorithm-1].sort(data); w\lc;4U
} \N[2-;[3
>J) 9&?
public static interface Sort { Uu[dx}y
public void sort(int[] data); \5P 5N]]
} x T1MW
]O&\P n0q
public static void swap(int[] data, int i, int j) { SQT]'
int temp = data; g#lMT%
data = data[j]; kca#ssN
data[j] = temp; /*e6('9s
} ~?zu5,vb
} Aaug0X