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。 x97H(*
插入排序: ,\}k~ U99
l# BZzJ?~
package org.rut.util.algorithm.support; FH[#yq.Pr
vlAy!:CV
import org.rut.util.algorithm.SortUtil; ?cJA^W
/** 5f{wJb2
* @author treeroot Kk>DYHZ6y
* @since 2006-2-2 L,W:,i/C
* @version 1.0 EO"6Dq(
*/ |C4o zl=O?
public class InsertSort implements SortUtil.Sort{ :i}@Br+R7L
01o [!n T
/* (non-Javadoc) @Rf^P(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iAgOnk[
*/ ;xI0\a7
public void sort(int[] data) { B/rzh? b
int temp; -zR.'x%
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); CMFC"e Se
} U(!?d ]en
} ]An_5J
} ]y}Zi/zh
r\B"?oqC
} +2El
)u-ns5
冒泡排序: ,k\/]9
sN=KR qe
package org.rut.util.algorithm.support; }]`}Ja
88#N~j~P
import org.rut.util.algorithm.SortUtil; 8a?IC|~Pz
\Me"'.F?
/** vyujC`61d
* @author treeroot g(1"GKg3K
* @since 2006-2-2 y1nP F&_
* @version 1.0 yZ ?$8r
*/ 2G H)iUmc
public class BubbleSort implements SortUtil.Sort{ b13nE.
}&C dsCM>2
/* (non-Javadoc) yX`J7O{=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @\+%GDv
*/ y>4p~
public void sort(int[] data) { lu3Q, W
int temp; \Ec
X!aC
for(int i=0;i for(int j=data.length-1;j>i;j--){ 3mybG%39
if(data[j] SortUtil.swap(data,j,j-1); a!&bc8J7
} ?l(nM+[kSL
} r.?qEe8VV
} dWMccn;-m
} xJ$Rs/9C
]Kof sU_{
} y)0gJP
L^
5[1@`6j
选择排序: U-ERhm>uk
r}Ltv?4
package org.rut.util.algorithm.support; y(V&z"wk[
}F~f&<GX6
import org.rut.util.algorithm.SortUtil; )8 oEs
D\@e{.$MZ|
/** C+DG+_%V*S
* @author treeroot SlR7h$r'
* @since 2006-2-2 ',:3>{9
* @version 1.0 er#8D6*
*/ N|bPhssFw
public class SelectionSort implements SortUtil.Sort { K<D`(voL
6Wf*>G*h
/* :P HUsy
* (non-Javadoc) 6\%r6_.d
* ,G/\@x%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D1oaG0
*/ z]'|nX
public void sort(int[] data) { tq2-.]Y@U
int temp; dl7Riw-J
for (int i = 0; i < data.length; i++) { #8P#^v]H
int lowIndex = i; y>DfM5>
for (int j = data.length - 1; j > i; j--) { @$2`DI{_^
if (data[j] < data[lowIndex]) { 4x=V|"
lowIndex = j; x8\E~6`,
} 6 Xzk;p
}
JsZAP
SortUtil.swap(data,i,lowIndex); =>gyc;{2K<
} t-3v1cv"
} 8<wtf]x
2tm~QL
} rD:gN%B=
2U-#0,ll]
Shell排序: 9^6|ta0;0
n's2/9x
package org.rut.util.algorithm.support; IKNFYe[9e
L,s|gtv
import org.rut.util.algorithm.SortUtil; T%M1[<"Q
[lDt0l5^
/** DDqC}l_
* @author treeroot B:R7[G;1
* @since 2006-2-2 ~9`^72
* @version 1.0 .0R/'!e
*/ @&nx;K6h
public class ShellSort implements SortUtil.Sort{ "1gk-
N7RG5?
/* (non-Javadoc) ~frPV8^DP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3B!&ow<rt
*/ CSd9\V
public void sort(int[] data) { rw}5nv
for(int i=data.length/2;i>2;i/=2){ ,H#qgnp
for(int j=0;j insertSort(data,j,i); !`O_VV`/@
} Z~-T0Ab-
} mVc'%cPaw
insertSort(data,0,1); YoSo0fQA
} (Fbm9(q$d
iOX4Kl
/** thlpj*|
* @param data o2 T/IJP
* @param j 4 _c:Vl
* @param i =
C$@DNEc
*/ LX(iuf+l
private void insertSort(int[] data, int start, int inc) { &kXGWp
int temp; E,ZB;
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ZF/J/;uI
} HwVgT"
} Xn
ZX *Y]"
} QYf/tQg$
NbQMWU~7
} 4}r\E,`*X
gN!E*@7
快速排序: xsY>{/C
.JD4gF2N
package org.rut.util.algorithm.support; =yhn8t7@]
"t%1@b*u
import org.rut.util.algorithm.SortUtil; vxzf[
gn[$;*932z
/** Z@c0(ol
* @author treeroot ;I`,ZKY
* @since 2006-2-2 6ljRV)
* @version 1.0 Vgru, '
*/ NZ%~n:/V#
public class QuickSort implements SortUtil.Sort{ 28UL
WV!kA_
/* (non-Javadoc) x>8}|ou
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1
">d|oC
*/ kb}]sj
public void sort(int[] data) { BhE~k?$9
quickSort(data,0,data.length-1); r3BDq
} ZimMjZ%4
private void quickSort(int[] data,int i,int j){ $jm>tW&;
int pivotIndex=(i+j)/2; Z9
q{r s
file://swap 13_+$DhU-L
SortUtil.swap(data,pivotIndex,j); q$u\
q.
l~Wk07r3
int k=partition(data,i-1,j,data[j]); ,T21z}r
SortUtil.swap(data,k,j); RwE*0 T
if((k-i)>1) quickSort(data,i,k-1); 2t`9_zqLw
if((j-k)>1) quickSort(data,k+1,j); _G}CD|Kx
Oz9Mqcx
} X-ki%jp3
/** h7W%}6Cqkw
* @param data T>uWf#&pjs
* @param i ,C'w(af@}
* @param j GZhfA ;O,
* @return l]klV+9t
*/ Z\gg<Q
private int partition(int[] data, int l, int r,int pivot) { CXP $bt}
do{ LN3dp?;_{
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); m|cWX"#g
SortUtil.swap(data,l,r); v[yTk[zd0
} <}Wy;!L
while(l SortUtil.swap(data,l,r); 6<Pg>Bg
return l; {@K2WB
} SeJFZ0p
2}#wdJ`
} `Py=
?[cD
W!4V:(T
改进后的快速排序: b\Xu1>
3f2Hjk7,d
package org.rut.util.algorithm.support; A*;^F]~'
!wb~A0m
import org.rut.util.algorithm.SortUtil; % x*Ec[l
Ccd7|L1
/** WoWM
* @author treeroot 0)Um W{
* @since 2006-2-2 $E_vCB_
* @version 1.0 {7~ $$AR(
*/ m<'xlF
public class ImprovedQuickSort implements SortUtil.Sort { H{A| ~V)
y>cmKE
private static int MAX_STACK_SIZE=4096; z9kX`M+
private static int THRESHOLD=10; 0|>
/* (non-Javadoc) Qx,$)|_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .fh?=B[o#
*/ ut5!2t$c
public void sort(int[] data) { ,t&-`U]AX
int[] stack=new int[MAX_STACK_SIZE]; >]Yha}6h
NUnc"@
int top=-1; |%cO"d^ri
int pivot; FR6I+@ oX~
int pivotIndex,l,r; AW;)_|xM
0V,MDX}#_
stack[++top]=0; t-x"(
stack[++top]=data.length-1; ST8/
;S#c
)?IA`7X
while(top>0){ _5S$mc8K0
int j=stack[top--]; `8.32@rUB.
int i=stack[top--]; xv% USm
dQ|Ht[s=
pivotIndex=(i+j)/2; C<@1H>S4_
pivot=data[pivotIndex]; HN~4-6[q
|QTqa~~B
SortUtil.swap(data,pivotIndex,j); tKsM}+fq
-Fc#
file://partition o3=S<|V
l=i-1; ow$l!8
r=j; jMWwu+w
do{ }_/h~D9-T#
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); fX$4TPy(h
SortUtil.swap(data,l,r); K}/`YDu
} GhQ`{iJM
while(l SortUtil.swap(data,l,r); |{IU<o
x
SortUtil.swap(data,l,j); @=#s~ 3
[*ovYpj^
if((l-i)>THRESHOLD){ RkP|_Bf8)
stack[++top]=i; 1nTaKK
q
stack[++top]=l-1; dB/I2uGl>
} 54cgX)E[x
if((j-l)>THRESHOLD){ uWtS83i
stack[++top]=l+1; 2LH;d`H[0
stack[++top]=j; |=}~>!!
} ',s7h"
]sP9!hup
} #I~dv{RX
file://new InsertSort().sort(data); EjE`S_i=
insertSort(data); 5f@YrTO[@
} *"sDaN0@R
/** *xTquV$
* @param data +9rbQ?'
*/ bK%tQeT
private void insertSort(int[] data) { WzbN=&
C]h
int temp; 5nqdY*
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); uOqDJM'RM
} kR?n%`&k
} cD@lorj
} HwMsP$`q
Mf13@XEo
} J,KTc'[
x)Kh_G
归并排序: -+@~*$
d
MJpTr5Vs
package org.rut.util.algorithm.support; 0M2+?aKif
B_jI!i{N%o
import org.rut.util.algorithm.SortUtil; !-nm7Q
{:OVBX
/** `^k<.O
* @author treeroot p&doQh
* @since 2006-2-2 .h^Ld,Chj
* @version 1.0 luog_;{h+
*/ 1+c(G?Ava
public class MergeSort implements SortUtil.Sort{ ([o:_5/8I
jt?%03iuk
/* (non-Javadoc) c}s3c
>`d
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) irj}:f;!eF
*/ O'U,|A
public void sort(int[] data) { vz5RS
int[] temp=new int[data.length]; vGp@YABM
mergeSort(data,temp,0,data.length-1); <{Wa[1D
} $:Zxb
d}J#wT
private void mergeSort(int[] data,int[] temp,int l,int r){ [/j-d
int mid=(l+r)/2; xl=|]8w
if(l==r) return ; 481u1
mergeSort(data,temp,l,mid); 30`H
Xv@
mergeSort(data,temp,mid+1,r); vA~hkkj{
for(int i=l;i<=r;i++){ '-TFr NO;h
temp=data; vG:,oB}
} ~h|L;E"
int i1=l; vB4qJ{f
int i2=mid+1; 8#-}3~l[
for(int cur=l;cur<=r;cur++){ 74wa
if(i1==mid+1) rVmO/Y#Hx$
data[cur]=temp[i2++]; vbJMgdHFR
else if(i2>r) Gl1$W=pR:
data[cur]=temp[i1++]; sM[c\Z]
else if(temp[i1] data[cur]=temp[i1++]; "+Rm4_
else s#49pDN
data[cur]=temp[i2++]; 1h{_v!X
} !\v3bOi&
} mt7:`-
Hb4rpAeP
} @Q5^Q'!
{
)K(}~VD
改进后的归并排序: H-lRgJdc
i?9Lf
package org.rut.util.algorithm.support; N?:S?p9R@
1-<Xi-=^{t
import org.rut.util.algorithm.SortUtil; AlV2tffY^
tJ3s#q6
/** (avaTUMOqy
* @author treeroot /2I("x]
* @since 2006-2-2 =B2=UF
* @version 1.0 IC~D?c0H:
*/ >48Y-w
public class ImprovedMergeSort implements SortUtil.Sort { ' 'N@ <|
d~%Rnic6*
private static final int THRESHOLD = 10; #kEdf0
qI:wm=
/* so?1lG
* (non-Javadoc) D1 z3E;:
* ]T`qPIf;yJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L}+!<Ug
*/ 9G9lSj5>
public void sort(int[] data) { FT6cOMu
int[] temp=new int[data.length]; t&]IgF
mergeSort(data,temp,0,data.length-1); !h\3cs`QU
} ;2}Gqh )Yr
DTY=k
private void mergeSort(int[] data, int[] temp, int l, int r) { DJ.Ct4
int i, j, k; up?8Pq*
int mid = (l + r) / 2; <j'#mUzd
if (l == r) (;3jmdJhK
return; Fk:(%ci
if ((mid - l) >= THRESHOLD) + h&V;
mergeSort(data, temp, l, mid); zb (u?U
else ORTM[cL
insertSort(data, l, mid - l + 1); tz{]H9
if ((r - mid) > THRESHOLD) a@./e @p
mergeSort(data, temp, mid + 1, r); ~+Y;jAdU
else Ho/5e*X
insertSort(data, mid + 1, r - mid); o2L/8q.
5+r#]^eQY-
for (i = l; i <= mid; i++) { RzkJS9)m
temp = data; ?/~1z*XUW
} +?p ;,Z%5
for (j = 1; j <= r - mid; j++) { :?TV6M
temp[r - j + 1] = data[j + mid]; Q=[&~^Y)
} qJ!xhf1
int a = temp[l]; j:#[voo7
int b = temp[r]; Z.<B>MD8^
for (i = l, j = r, k = l; k <= r; k++) { > jcNo3S
if (a < b) { Xo,BuK&G
data[k] = temp[i++]; S=Zjdbd
a = temp; = FQH
} else { Hd:ZE::Q'#
data[k] = temp[j--]; ^t*BWJxPC
b = temp[j]; "o1/gV
} P*}Oi7Z
} "^\ 4xI
} YG% Zw
wo/H:3^N
/** 1+]e?
* @param data hOV+}P6
* @param l 3,GSBiK3}
* @param i 5VI'hxU4Qg
*/ +XQ6KG&
private void insertSort(int[] data, int start, int len) { sU>*S$X8
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); S7V;sR"V2
} g+f{I'j
} r6A7}v
} ve$P=ZuM
} X(8]9
#2}S83
k
堆排序: 7>.^GD
-n6C~Yx
package org.rut.util.algorithm.support; Jyd%!v
1{A4_/R
import org.rut.util.algorithm.SortUtil; YpiSH(70`
'h:4 Fzo<
/** sh0O~%]g
* @author treeroot 9Y7 tI3
* @since 2006-2-2 ALFw[1X
* @version 1.0 c;j]/R$i
*/ C?zC|0
public class HeapSort implements SortUtil.Sort{ @x)z" )>
-wY6da*.W
/* (non-Javadoc) X[VQ 1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tJ 6:$dh
*/ /GEqU^
B
public void sort(int[] data) { JAgec` T%
MaxHeap h=new MaxHeap(); /6>2,S8Ar
h.init(data); t]Vw`z%G
for(int i=0;i h.remove(); J?%Z7&/M>
System.arraycopy(h.queue,1,data,0,data.length); g|W~0A@D
} Bs^W0K$uBO
uu(.,11`
private static class MaxHeap{ D@mDhhK_
$?0<rvGJ
void init(int[] data){ %!WQ;(
this.queue=new int[data.length+1]; %e3lb<sv6
for(int i=0;i queue[++size]=data; 2f4 *r^
fixUp(size); SMnbI.0
} J)*y1
} o8bVz2E
MYLq2g\
private int size=0; puDy&T
~aBALD0D;
private int[] queue; a
"8/y4Y
#*?a"
public int get() { yBeSvsm
return queue[1]; E-l>z%
} ?"J5~_U.
,~c:P>v=
public void remove() { ?9/%K45
SortUtil.swap(queue,1,size--); V[CS{Hy'
fixDown(1); Yr"G)i~"Y
} h}.0Ne
file://fixdown GQT|T0>Ro
private void fixDown(int k) { }KJ/WyYW
int j; XYf;72*
while ((j = k << 1) <= size) { ]l`?"X|^
if (j < size %26amp;%26amp; queue[j] j++; J/=b1{d"n
if (queue[k]>queue[j]) file://不用交换 D{\hPv
break; `[[
A7
SortUtil.swap(queue,j,k); aZ- )w
k = j; v"\Q/5p
} =f?| f
} F~z4T/TN%G
private void fixUp(int k) { JoIffI?{(D
while (k > 1) { fk;39$[
int j = k >> 1; kx*=1AfU+Y
if (queue[j]>queue[k]) {- tCLkE
3
break; HP"5*C5D
SortUtil.swap(queue,j,k); `G6Nk@9.
k = j; `UGHk*DL)
} pv;}Sv$
]-
} `TBau:E lI
LeXuTd
} E*i <P
px".pYr0
} |'Z6M];8t
6xvy hg#B
SortUtil: z'XFwk
|?i-y3N
package org.rut.util.algorithm; WR%x4\,d#
S3A OT
import org.rut.util.algorithm.support.BubbleSort; tFO86 !ln
import org.rut.util.algorithm.support.HeapSort; c"H*9u:
import org.rut.util.algorithm.support.ImprovedMergeSort; rK9X68)
import org.rut.util.algorithm.support.ImprovedQuickSort; xOp8[6Ga'
import org.rut.util.algorithm.support.InsertSort; ;gP@d`s
import org.rut.util.algorithm.support.MergeSort; $x)C_WZj?
import org.rut.util.algorithm.support.QuickSort; %\Z{~(&-v
import org.rut.util.algorithm.support.SelectionSort; OxZw;yD
import org.rut.util.algorithm.support.ShellSort; |Rf4^vN
Kp!sn,:
/** j:0(=H!#
* @author treeroot 8fY1~\G:\
* @since 2006-2-2 $2~I-[
* @version 1.0 =I-SQI8
*/ YQ:FBj
public class SortUtil { `
zeZ7:
public final static int INSERT = 1; 6av]LY K
public final static int BUBBLE = 2; * _)xlpy
public final static int SELECTION = 3; 8*k#T\
public final static int SHELL = 4; 7`9J.L&,;
public final static int QUICK = 5; {=pRU_-^
public final static int IMPROVED_QUICK = 6; }'U"HHv
public final static int MERGE = 7; xPl+
rsU
public final static int IMPROVED_MERGE = 8; A'^y+42jY
public final static int HEAP = 9; $<xa "aN!
!yI , ~`Z
public static void sort(int[] data) { p(g0+.?`~
sort(data, IMPROVED_QUICK); +]
s"* 'V$
} #T &z`
private static String[] name={ n}Pz:
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" cy%JJ)sf
};
;nW#Dn9
@8a1a3_F
private static Sort[] impl=new Sort[]{ >AX&PMb`
new InsertSort(), 3GqvL_
new BubbleSort(), //9Ro"
new SelectionSort(), ;4tmnC>OnA
new ShellSort(), ]k
&Y )
new QuickSort(), \D}K{P
new ImprovedQuickSort(), *.nC'$-2r
new MergeSort(), ^LO=&Cq
new ImprovedMergeSort(), mF7T=pl
new HeapSort() kqxX!
}; *8ykE
p^S]O\;M7
public static String toString(int algorithm){ P4@<`Eb
return name[algorithm-1]; tu{y
} G$FNofQx
MDI[TNYG
public static void sort(int[] data, int algorithm) { ;[9WB<t
impl[algorithm-1].sort(data); o0t/
} .b'hVOs{
0k Ezi
public static interface Sort { j<[+vrj
public void sort(int[] data); $C@v
} :wtr{,9rZ
f~nAJ+m=
public static void swap(int[] data, int i, int j) { ^,F8 ha
int temp = data; 2\
3}y(
data = data[j]; 0=]RG
data[j] = temp; a:nMW '!
} QQ*yQ\
} E07g^y"}i