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。 ?!wgH9?8
插入排序: v4?x.I
u4m,'XR
package org.rut.util.algorithm.support; ktK_e
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import org.rut.util.algorithm.SortUtil; J%V-Q>L
/** 9k9_mjLZ
* @author treeroot ;`l'2
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* @since 2006-2-2 R E}?5XHb
* @version 1.0 \Z^TXyu
*/ .U"8mP=&
public class InsertSort implements SortUtil.Sort{ {D!6%`HKV+
_8Z_`@0
/* (non-Javadoc) $p#%G#T
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]V-W~r=
*/ XGJj3-eW{
public void sort(int[] data) { 76wc ,+
int temp; Vm5c+;
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); m~@;~7I x
} OS4q5;1#
} z ?[r
} O@MGda9_;
W ZazJ=27}
} 3l[McZ
9Rn?
:B~W:
冒泡排序: _2k]3z?
O$D'.t
package org.rut.util.algorithm.support; LUH"
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import org.rut.util.algorithm.SortUtil; Y7#-Fra0W
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/** Q?8R[i
* @author treeroot #?*WPq
* @since 2006-2-2 vohoLeJTj
* @version 1.0 !Gu%U $d
*/ @Ukr
public class BubbleSort implements SortUtil.Sort{ ixW@7m
%uJ<M-@r=u
/* (non-Javadoc) GiP`dtK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F^N82
*/ lZyG)0t,g
public void sort(int[] data) { {~h*2n
int temp; X/z6"*(|/
for(int i=0;i for(int j=data.length-1;j>i;j--){ +j(d| L\
if(data[j] SortUtil.swap(data,j,j-1); !>BZ6gn5
} fMGbODAvY
} (
{1e%
} *+TH#EL2
}
)x}l3\s
r|PFw6
} Zq,9&y~
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选择排序: YY&l?*M<
|}{B1A
package org.rut.util.algorithm.support; .!1S[
Q:|l`*.R
import org.rut.util.algorithm.SortUtil; Oy<5>2^P
eh4gQ^l
/** N=5)fe%{4
* @author treeroot %9k!A]KD
* @since 2006-2-2 aFe`_cnG
* @version 1.0 <&&SX;
*/ txZ?=8j_Y
public class SelectionSort implements SortUtil.Sort { rsF\JQk
UA4J>1 i
/* f6_];]yP
* (non-Javadoc) A a=u+
* e1>aTu@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "6R
5+
*/ rC.eyq,105
public void sort(int[] data) { ] GHt"
int temp; "V>R9dO{"!
for (int i = 0; i < data.length; i++) { <+^6}8-
int lowIndex = i; M
t*6}Cl
for (int j = data.length - 1; j > i; j--) { 3' ~gviI
if (data[j] < data[lowIndex]) { d~/q"r 1"
lowIndex = j; za:a)U^n
} %&->%U|'
} tG8jFou
SortUtil.swap(data,i,lowIndex); lqowG!3H
} 6*qL[m.F[o
} @*0cMO;SpG
j:}J}P
} V7Z4T6j4
X=6y_^
Shell排序: \S*$UE]uG
Vo9F
package org.rut.util.algorithm.support; *\wp?s>-t
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d
import org.rut.util.algorithm.SortUtil; i.xXb[M+
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/**
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* @author treeroot ],ZzI
* @since 2006-2-2 3#vinz
* @version 1.0 Yz4_vePh+5
*/ e/*$^i+S
public class ShellSort implements SortUtil.Sort{ anj#@U;!
j
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/* (non-Javadoc) hY*0aZ|(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4EXB;[]
*/ nLwiCfe
public void sort(int[] data) { q;fKcblKj
for(int i=data.length/2;i>2;i/=2){ 'DCFezdf3
for(int j=0;j insertSort(data,j,i); 6
4D]Ypx
} C@Nv;;AlU
} 65oWD-
insertSort(data,0,1); [L6w1b,
} &SAH2xR
jYVE8Y)my
/** ~XydQJ^*
* @param data Xt{*N-v\
* @param j =?])['VaA
* @param i \eGKkSy
*/ TgTnqR@/
private void insertSort(int[] data, int start, int inc) { E"%2)
int temp; Q\Gq|e*
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); WKrX,GF
} 6AvHavA^Y
} ZkP{[^6d\
} BR v+.(S
.}k(L4T|=
} \ A%eG&
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快速排序: ,;<RW]r-P
MlJVeod
package org.rut.util.algorithm.support; li]
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>sD4R}\})
import org.rut.util.algorithm.SortUtil; 1`LXz3uBe
g7CXlT0Q6
/** <e)o1+[w
* @author treeroot [ U8$HQ+x
* @since 2006-2-2 wQ+dJ3b$
* @version 1.0 LhzMAW<L4
*/ spQLG_o,J
public class QuickSort implements SortUtil.Sort{ J9%@VZut
<w>/^|]#
/* (non-Javadoc) `W `0Fwu9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3ta$L"a
*/ ?-OPX_i_
public void sort(int[] data) { 0rokR&Y-d
quickSort(data,0,data.length-1); dQgk.k
} lFUWV)J\
private void quickSort(int[] data,int i,int j){
/u`3VOn
int pivotIndex=(i+j)/2; a$9A(Pte
file://swap 6P`)%zj
SortUtil.swap(data,pivotIndex,j); 2X88:
S2C]?6cTq
int k=partition(data,i-1,j,data[j]); }wwe}E-e
SortUtil.swap(data,k,j); _M,lQ~
if((k-i)>1) quickSort(data,i,k-1); 4'Xgk8)
if((j-k)>1) quickSort(data,k+1,j); ;pJ2V2 g8
Y-~~,Yl~
} m"-[".-l-
/** ~%#mK:+
* @param data i3mAfDF
* @param i 0nW F
* @param j M R'o{?{e`
* @return =y%rG :!
*/ ,xths3.K
private int partition(int[] data, int l, int r,int pivot) { #\4 b:dv
do{ 2GWDEgI1o
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); WxGSv#u
SortUtil.swap(data,l,r); $R^AEa7
} kGN||h
while(l SortUtil.swap(data,l,r); \k.vN@K#
return l; U3#dT2U
} NvtM3
jN/C'\QL
} sI 4yG
:DkAQ-<~
改进后的快速排序: uCzii o`S
9 1P4:6
package org.rut.util.algorithm.support; H5nS%D
Y/U{Qc\6
import org.rut.util.algorithm.SortUtil; 59B&2861
:WXf.+IA
/** W7UtA.2LT
* @author treeroot
?RD *1
* @since 2006-2-2 =qoRS0Qa
* @version 1.0 S7n"3.k
*/ ;RN8\re
public class ImprovedQuickSort implements SortUtil.Sort { R[A5JQ$[
<%bw/
private static int MAX_STACK_SIZE=4096; mog9 jw
private static int THRESHOLD=10; ;vO@m!h}U
/* (non-Javadoc) BIWD/|LQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &1)xoZ'\
*/ i(HByI
public void sort(int[] data) { fk5XvL
int[] stack=new int[MAX_STACK_SIZE]; tLX,+P2|
2HOe__Ns
int top=-1; #Ws53mT
int pivot; B}*V%}:)
int pivotIndex,l,r; 'M'w,sID
d,'!.#e
stack[++top]=0; +lp{#1q0
stack[++top]=data.length-1; EIX\O6*
8?jxDW
a
while(top>0){ f =_^>>.
int j=stack[top--]; 3n(*E_n
int i=stack[top--]; z] @W[MHY
dc^Vc{26Z
pivotIndex=(i+j)/2; Q5E:|)G
pivot=data[pivotIndex]; p$!@I
rFXSO=P?Z
SortUtil.swap(data,pivotIndex,j); dl[ob,aCK
qw:9zYG}qW
file://partition !p%@Deu
l=i-1; t*+! n.p
r=j; /GsrGX8
do{
*q"G }
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); nN{dORJlx
SortUtil.swap(data,l,r); |Is'-g!
} d 7i#w
#
while(l SortUtil.swap(data,l,r); sX'U|)/pD
SortUtil.swap(data,l,j); _Y
YP4lEL
w yD%x(
if((l-i)>THRESHOLD){ +G!v!(Ob+
stack[++top]=i; ABWb>EZ8
stack[++top]=l-1; _O52ai><b
} u
2lXd'
if((j-l)>THRESHOLD){ }|He?[TR
stack[++top]=l+1; >Pkdu}xP3
stack[++top]=j; $y6rvQ
2>S
} oYq,u@oM
OLFt;h
} j6X LyeG7
file://new InsertSort().sort(data); }=pOiILvD
insertSort(data); XqFu(Lm8=
} _[$#
b]V
/** , ,{6m
d
* @param data RdkU2Y}V
*/ C5B=NAc
private void insertSort(int[] data) { `V~LV<v5
int temp; -R@JIe_28f
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]S]"`;Wh
} ||gEs/6-
} )_pt*xo
} D5[VK`4Z
c9|a$^I6
} El1:?4;
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归并排序: Q2R-z^pd
qnTi_c
package org.rut.util.algorithm.support; :xN8R^(
x#o?>5Qg?
import org.rut.util.algorithm.SortUtil; F(G<*lA
;x RjQR
/** 7BrV<)ih{*
* @author treeroot Uk"Y/Ddm
* @since 2006-2-2 (l;C%O7*
* @version 1.0 0Ts!(b]B
*/ vu>YH)N_h
public class MergeSort implements SortUtil.Sort{ 0i_
y$v@wb5
/* (non-Javadoc) +QQYPEx+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z3I L8
*/ 7n
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public void sort(int[] data) { rN'.&;Y5
int[] temp=new int[data.length]; 8q{1E];:q
mergeSort(data,temp,0,data.length-1); @!-aR u
} ){jqfkL
dd19z%
private void mergeSort(int[] data,int[] temp,int l,int r){ 1O- E],
int mid=(l+r)/2; ax;{MfsK
if(l==r) return ; 2Z-,c;21
mergeSort(data,temp,l,mid); HcDyD0;L.
mergeSort(data,temp,mid+1,r); s.bT[0Vl
for(int i=l;i<=r;i++){ 6HB]T)n
temp=data; y 2cL2c$BT
} \/X{n*Hw?
int i1=l; s?~8O|Mu'
int i2=mid+1; t{[gKV-b
for(int cur=l;cur<=r;cur++){ #Ul4&QVeg
if(i1==mid+1) `Q+i-y
data[cur]=temp[i2++]; ;4R=eI
else if(i2>r) PGMv(}%;
data[cur]=temp[i1++]; Iy6p>z|
else if(temp[i1] data[cur]=temp[i1++]; lJ("6aT?
else p5D5%B/
data[cur]=temp[i2++]; 4*YOFU}l
} ja L$LJV
} EI%M
Azj}
{rtM%%l
} .wM:YX'[G
y`\mQ48V
改进后的归并排序: tru;;.lj8K
CL
EpB2_
package org.rut.util.algorithm.support; rO5u~"v]
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import org.rut.util.algorithm.SortUtil; (0X,Qwx
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/** DBLA% {05
* @author treeroot -MQZiq7H4
* @since 2006-2-2 -qs(2^
* @version 1.0 ?,D>+::
*/ Y1m}@k,+M
public class ImprovedMergeSort implements SortUtil.Sort { &S9f#Ui
3$MYS^D
private static final int THRESHOLD = 10; u'#`yTB6b
JTSq{NN
/* rsd2v9
* (non-Javadoc) M-}j9,oR`
* ',L{CQA?c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DxE^#=7iH;
*/ U)SM),bE[
public void sort(int[] data) { v; je <DT
int[] temp=new int[data.length]; v@F|O8t:s
mergeSort(data,temp,0,data.length-1); `wP/Zp{Hy
} 2]?w~qjWm
L*kh?PS;
private void mergeSort(int[] data, int[] temp, int l, int r) { ;"d?_{>7
int i, j, k;
"$`wk
int mid = (l + r) / 2; KyuA5jQ7
if (l == r) ^zBjG/'7
return; iSSc5ek4
if ((mid - l) >= THRESHOLD) >cGh| _9
mergeSort(data, temp, l, mid); []GthF
else yS1b,cxz
insertSort(data, l, mid - l + 1); "3U{h]
if ((r - mid) > THRESHOLD) V%X:1 8j
mergeSort(data, temp, mid + 1, r);
<^H1)=tlF
else r78u=r
insertSort(data, mid + 1, r - mid); 2P;%P]~H
v_?s1+w
for (i = l; i <= mid; i++) { ^8o_Iz)r,
temp = data; ZXFAuF
} c n\k`8
for (j = 1; j <= r - mid; j++) { t(Q&H!~e
temp[r - j + 1] = data[j + mid]; v>x {jZkFL
} ^yEj]]6
int a = temp[l]; aF;]7i@
int b = temp[r]; z5|e\Z
for (i = l, j = r, k = l; k <= r; k++) { 2eZk3_w
if (a < b) { 7yq7a[Ra
data[k] = temp[i++]; >N+bU{s
a = temp; 1YF+(fk
} else { VJ~X#Q
data[k] = temp[j--]; t
1Ir4
b = temp[j]; %a)0?U
} ::3iXk)
} Dz"u8 f
}
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)[@YHE5g
/** wW6mYgPN%
* @param data |.Y@^z;P3
* @param l pmow[e
* @param i (<d&BV- "
*/ =!pu+&I 9
private void insertSort(int[] data, int start, int len) { cu.*4zs
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); EPE!V>
} v&[X&Hu[
} .-O@UQx.I
}
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} hJC
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w(vE2Y ?
堆排序: K$37}S5
%-1BA*J`|
package org.rut.util.algorithm.support; tdw\Di#m
h X>VVeIZ
import org.rut.util.algorithm.SortUtil; 4."o.:8x
KG4#BY&^
/** #x4h_K
Y
* @author treeroot oPBg+Bh*
* @since 2006-2-2 dIBKE0`
* @version 1.0 !BvTJ-e)F
*/ QKUBh-QFK
public class HeapSort implements SortUtil.Sort{ @^y?Bh9jQ
9QX~aX
/* (non-Javadoc) 'Ec:l(2Ec
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HX /GLnY/X
*/ 'o)ve(
public void sort(int[] data) { Y?&DEKFbD
MaxHeap h=new MaxHeap(); $$bTd3N+
h.init(data); 1a=9z'8V
for(int i=0;i h.remove(); Z3abem<Q
System.arraycopy(h.queue,1,data,0,data.length); YjX!q]56
} [d^:
xtIehr0{$I
private static class MaxHeap{ c`$`0}
#2lvfR|
void init(int[] data){ T$.-{I
this.queue=new int[data.length+1]; zT4ulXN
for(int i=0;i queue[++size]=data; /BjGAa(
fixUp(size); NrI5uC7
} C<wj?!v,F[
} },Y;
(n'
FVC2 XxP
private int size=0; Tk v
v]`A_)[
private int[] queue; |peMr#
#<tWYE
public int get() { 3w<j:\i
return queue[1]; ,SJK
} '4^V4i
_;J9q}X
public void remove() { lM|WOmD
SortUtil.swap(queue,1,size--); AHMV@o`V
fixDown(1); CtC`:!Q
} f5=t*9_-[
file://fixdown "{ry 9?z
private void fixDown(int k) { ,@'){V
int j; &x0TnW"g
while ((j = k << 1) <= size) { ![P(B0Ct/
if (j < size %26amp;%26amp; queue[j] j++; _iboTcUF
if (queue[k]>queue[j]) file://不用交换 <zDw&s2
break; z?t(+^
SortUtil.swap(queue,j,k); ,5A>:2 zs
k = j; ^;k _
} Y="&|c=w#L
} -o!,,XYj .
private void fixUp(int k) { U38wGSG
while (k > 1) { 9+is?Pj
int j = k >> 1; >NOYa3
if (queue[j]>queue[k]) Er/5 ,
break; ^/d^$
SortUtil.swap(queue,j,k); i!d7,>l+Q~
k = j; z$BnEd.y=:
} v20I<!5w
} ^; V>}08
WtdkA Sj
} :5cu,&<Gv
_!^FW%
} 'G3OZj8
,@>rubUz
SortUtil: 0rm;)[SjF
b%!`fn-;
package org.rut.util.algorithm; Tx!m6B`Y
<<2b2?aS`
import org.rut.util.algorithm.support.BubbleSort; P7x?!71?L
import org.rut.util.algorithm.support.HeapSort; 9;v"bcQ
import org.rut.util.algorithm.support.ImprovedMergeSort; nog\,NT
import org.rut.util.algorithm.support.ImprovedQuickSort; '3u]-GU2_
import org.rut.util.algorithm.support.InsertSort; hTtp-e`
import org.rut.util.algorithm.support.MergeSort; ZesD(
import org.rut.util.algorithm.support.QuickSort; *ckrn>E{h
import org.rut.util.algorithm.support.SelectionSort; @xF8' [<
import org.rut.util.algorithm.support.ShellSort; 5WNg+
zHs
/** 3D09P5$W
* @author treeroot h'y@M+c(
* @since 2006-2-2 qQ
DFg`
* @version 1.0 TnU$L3k
*/ 7}1Kafs
public class SortUtil { e"adkV
public final static int INSERT = 1; e$^!~+J7
public final static int BUBBLE = 2; /GSI.tO
public final static int SELECTION = 3; 9]F&Fz/G
public final static int SHELL = 4; <:{[Zvl'k
public final static int QUICK = 5; ^57fHlw
public final static int IMPROVED_QUICK = 6; c+)|o!d
public final static int MERGE = 7; lPN< rgg
public final static int IMPROVED_MERGE = 8; :*Ggz|
public final static int HEAP = 9; 8`~3MsE"
o>A%}YU
public static void sort(int[] data) { \HQb#f,
sort(data, IMPROVED_QUICK); *,[=}v1
} U}wq~fD
private static String[] name={ YTPmS\ H _
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" x[>_I1TJ
}; 75}u
D
?.A/E?Oc
private static Sort[] impl=new Sort[]{ GK+\-U)v
new InsertSort(), *4^]?Y\*
new BubbleSort(), e(\S,@VN2
new SelectionSort(), i |^`gly
new ShellSort(), f>+}U;)EF
new QuickSort(), FuiW\=^
new ImprovedQuickSort(), JHZo:Ad -&
new MergeSort(), q
vVZA*
new ImprovedMergeSort(), h-rj
new HeapSort() -*q2Y^A^l
}; ; F(01
WblV`"~e
public static String toString(int algorithm){ 8oH54bFp
return name[algorithm-1]; ZznWs+
} RH4n0=2
Q0; gF?
public static void sort(int[] data, int algorithm) { [k=9 +0p
impl[algorithm-1].sort(data); (dipKs?K
} 446hr zW>@
nW%=k!''
public static interface Sort { aw"%B-N\
public void sort(int[] data); }3_G|
} W!B4<'Fjc
?HyioLO
public static void swap(int[] data, int i, int j) { d1La7|43u
int temp = data; [=1?CD
data = data[j]; ZL@DD(S-/
data[j] = temp; &&S4x
} *K.7Zf0
} CgKSK0/a