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。 ,+~rd4a
插入排序: r5!/[_l
k)TSR5A
package org.rut.util.algorithm.support; Q#nOJ(KV
,V*%V;
import org.rut.util.algorithm.SortUtil; R+&jD;U{
/** !Hys3AP
* @author treeroot x\Z'2?u}
* @since 2006-2-2 5)
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* @version 1.0 pp7$J2s+j
*/ 5]M>8ll
public class InsertSort implements SortUtil.Sort{ i1S>yV^l
+3KEzo1=)
/* (non-Javadoc) XJLQ{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gY@N~'f;"
*/ [oF|s-"9!
public void sort(int[] data) { i hh/sPi
int temp; .BFYY13H
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Ok n(pJ0
} 2Ry1b+\
} &3yD_P_3
} %/9
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v@e~k-#
} IpP~Uz
Ug&,Y/tFw2
冒泡排序: SJIOI@\b
L[=a/|)TBV
package org.rut.util.algorithm.support; 5Hcf;P7
#!)n
{h+
import org.rut.util.algorithm.SortUtil; >@"Oe
ss5m/i7
/** da (km+
* @author treeroot @:KJYm[
* @since 2006-2-2 26xXl|I
* @version 1.0 yRo-EP
*/ :O(^w}sle
public class BubbleSort implements SortUtil.Sort{ ^5=B`aich
xhRngHU\z<
/* (non-Javadoc) To?W?s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bT&: fHc
*/ AE} )o)B
public void sort(int[] data) { {'U
Rz[g
int temp; :>+s0~
for(int i=0;i for(int j=data.length-1;j>i;j--){ G#MdfKH
if(data[j] SortUtil.swap(data,j,j-1); gdkwWoN.
} Unsogd
} rL}YLR
} 92^w8Z.
} -YsLd 9^4
Nj?/J47?,
} qu|B4?Y/CR
.|/~op4;
选择排序: "_`F\DGAZu
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package org.rut.util.algorithm.support; wQRZ"ri,
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import org.rut.util.algorithm.SortUtil; &LbJT$}V
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/** [ :zO}r:
* @author treeroot )KP5WudX
* @since 2006-2-2 @r?Uua
* @version 1.0 [o?*"c
*/ p1vp8p
public class SelectionSort implements SortUtil.Sort { bR V+>;L0@
@'|)~,"bx
/* zToq^T
* (non-Javadoc) l&[;rh
* C*`mM'#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uJ6DO#d`P
*/ Kw#i),M
public void sort(int[] data) { 7^g&)P
int temp; Aj0Tfdxy
for (int i = 0; i < data.length; i++) { 2 aL)
int lowIndex = i; mQY_`&Jq
for (int j = data.length - 1; j > i; j--) { e#E2>Bj;
if (data[j] < data[lowIndex]) { lEV]4
t_H
lowIndex = j; nB!&Zq
} $#]]K
} rta:f800z
SortUtil.swap(data,i,lowIndex); -N"&/)
} 1|ra&(=)
} mdw7}%5V
z(H^..<!5
} _%GGl$kH
/IsS;0K%L
Shell排序: i@4~.iZ8
?2oHZ%G
package org.rut.util.algorithm.support; k2AJXw
"U\4:k`:
import org.rut.util.algorithm.SortUtil; A*um{E+
kS!viJwtT
/** LA`*_|}qcR
* @author treeroot ak;*W
* @since 2006-2-2 A]DTUdL
* @version 1.0 0$-xw
*/ HvVts\f
public class ShellSort implements SortUtil.Sort{ >ss/D^YS
;v$4$D]L
/* (non-Javadoc) /FIE:Io
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *<J*S#]
*/ phgm0D7
public void sort(int[] data) { aAB`G3
for(int i=data.length/2;i>2;i/=2){ A7n\h-b
for(int j=0;j insertSort(data,j,i); CXC`sPY
} f{FDuIln
} =XY\iV1J*
insertSort(data,0,1); qBCK40
} Dre]AsgiV
YiPoYlD*n<
/** rp0ZvEX
* @param data d`F&aC
* @param j 4!LCR}K
* @param i 7R\oj8[
*/ qcN'e.A
private void insertSort(int[] data, int start, int inc) { IEzaK
int temp; AU$Uxwz4
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); _~T!9
} 1u6^z
} _-#'j2
} =|YxDas
;]pJj6J&v
} D`VM6/iQR
ph-ATJ"
快速排序: ^Y
iJV7
%b"\bHH
package org.rut.util.algorithm.support; 1[yq0^\]M[
('hEr~&
import org.rut.util.algorithm.SortUtil; E~_]Lfs)
E8~}PQW:I
/** G;~V
* @author treeroot Lg+G; W
* @since 2006-2-2 4Z/Q=Mq2
* @version 1.0 G^`1]?
*/ -]t,E,(!
public class QuickSort implements SortUtil.Sort{ ]~E0gsq
%y%j*B!%
/* (non-Javadoc) Sx8OhUyux
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {1b Zg
*/ d{E}6)1=
public void sort(int[] data) { x*Y@Q?`>5W
quickSort(data,0,data.length-1); a$Cdhx!
} |lkNi
private void quickSort(int[] data,int i,int j){ `^4vT3e
int pivotIndex=(i+j)/2; -Q
U^c2
file://swap $n^gmhp
SortUtil.swap(data,pivotIndex,j); NvvUSyk\;s
;asP4R=
int k=partition(data,i-1,j,data[j]); QJ7L7S
SortUtil.swap(data,k,j); l!g]a2x*
if((k-i)>1) quickSort(data,i,k-1); /)>s##p*
if((j-k)>1) quickSort(data,k+1,j); kVy\b E0o
a@0BBihz
} 6%VV,$p
/** gw}Mw
* @param data ~mR'Q-hi<
* @param i >z.<u|r2
* @param j ?|ZTaX6A
* @return ti<;7Yb
*/ f0BdXsV#g
private int partition(int[] data, int l, int r,int pivot) { ^J\~XYg{7
do{ `ck$t5:6sp
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ,Uy|5zv
SortUtil.swap(data,l,r); ZE/o?4k*c1
} b&5lY p"d
while(l SortUtil.swap(data,l,r); $O*O/iG
return l; xQp|;oW;z
} T
N!=@Gy
^*fxR]Y
} lf!FTm7
C(K; zo*S(
改进后的快速排序: m]cHF.:5
;JRs?1<='
package org.rut.util.algorithm.support; q.()z(M7
v= N!SaK{
import org.rut.util.algorithm.SortUtil; e@ \p0(
QurW/a
/** ZPD[5)~
* @author treeroot /mK?E5H'r1
* @since 2006-2-2 Y}vr>\
* @version 1.0 E{n:J3_X^d
*/ Al`e/a
public class ImprovedQuickSort implements SortUtil.Sort { @S7sr-
NMi45y(Y
private static int MAX_STACK_SIZE=4096; bcZf>:gVf
private static int THRESHOLD=10; ,DZX$Ug~+E
/* (non-Javadoc) leQT-l2Bk
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 59Gk3frk(
*/ q]\g,a
public void sort(int[] data) { d`(@_czdF
int[] stack=new int[MAX_STACK_SIZE]; =lu/9
i6
@_LN3zP
int top=-1; g=e71DXG2
int pivot; <Engi!
int pivotIndex,l,r; tu5*Qp\
H~E(JLcU
stack[++top]=0; EKzAd
stack[++top]=data.length-1; r]0
lo-
5A4&+rdU
while(top>0){ 0p@k({] <
int j=stack[top--]; s|NjT
int i=stack[top--]; ?PyG/W
eBJUv]o %
pivotIndex=(i+j)/2; A.5i"Ci[ie
pivot=data[pivotIndex]; /AQMFx4-5
ScSZGs 5&
SortUtil.swap(data,pivotIndex,j); ru7RcYRq
Dxk+P!!K
file://partition B)QHM+[=F
l=i-1; p3}?fej&|
r=j; -> J_ ~
do{ &EpAg@9!
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); CQpCS_M
SortUtil.swap(data,l,r); ,do58i
K
} HyR!O>
while(l SortUtil.swap(data,l,r); U5r7j
SortUtil.swap(data,l,j); Wy%s1iu
|qoKO:B4-[
if((l-i)>THRESHOLD){ $\?yAE
stack[++top]=i; Rd>B0;4
stack[++top]=l-1; a:_I
} M5trNSL&u
if((j-l)>THRESHOLD){ Tdc3_<1
stack[++top]=l+1; ^7.h%lSg
stack[++top]=j; \fjMc }'
} w`DW(hXJ
bUY>st'
} `w.AQ?p@
file://new InsertSort().sort(data); {Ixg2=E\
insertSort(data); X7g3
} 8Mbeg
,P
/** ~I(Hc.Q
* @param data x+G0J8cW
*/ 9RWkm%?
private void insertSort(int[] data) { ~QZ"Z
tu
int temp; 10#f`OPC
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); (4%YHS8
} Ve/xnn]'
} 5~yNqC
} x[Wwq=~
7jJbo]&
} \))=gu)I
*;XWLd#
归并排序: x{&w?ng
w2xG_q
package org.rut.util.algorithm.support; 8#D:H/`'
A?*o0I
import org.rut.util.algorithm.SortUtil; ^xZ
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$v b,P(
/** W@2vjz
* @author treeroot e9E\% p
* @since 2006-2-2 l)-Mq@V
* @version 1.0 @K:N,@yq
*/ 1>Q'R
public class MergeSort implements SortUtil.Sort{ <vUVP\u~$
lW 81q2n
/* (non-Javadoc) P%MfCpyj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
3!
~K^Z]
*/ Mzd[fR5a8
public void sort(int[] data) {
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int[] temp=new int[data.length]; `.2hjO
mergeSort(data,temp,0,data.length-1); BQ jK8c<
} T{}fHfM
&'' WRgZ}
private void mergeSort(int[] data,int[] temp,int l,int r){ K]xa/G(
int mid=(l+r)/2; Cb:gH}j
if(l==r) return ; WGAXIQ
mergeSort(data,temp,l,mid); !7d*v3)d
mergeSort(data,temp,mid+1,r); %5*@l vy
for(int i=l;i<=r;i++){ =KT7nl
temp=data; -ti{6:H8
} =\{\g7
int i1=l; Y\=FLO9
int i2=mid+1; 6yy;JQAke
for(int cur=l;cur<=r;cur++){ }17.~
if(i1==mid+1) &Z^l=YH,
data[cur]=temp[i2++]; tV/Z)fpyH
else if(i2>r) IooNb:(
data[cur]=temp[i1++]; n& $^04+i
else if(temp[i1] data[cur]=temp[i1++]; !JBae2Z
else {5|("0[F
data[cur]=temp[i2++]; |([R'Orm
} /1`cRyS
} }!TL2er_
Bg8#qv
} z5]bia,
*{o UWt
改进后的归并排序: =?X$Yaw*
` rm?a0
package org.rut.util.algorithm.support; 90xk$3(
BN,>&1I
import org.rut.util.algorithm.SortUtil; lHB) b}7E
[ REf>_R
/** >ulY7~wUv
* @author treeroot \b*X:3g*
* @since 2006-2-2 ^S#t|rN
* @version 1.0 G9g6.8*&
*/ oK9'
public class ImprovedMergeSort implements SortUtil.Sort { Yct5V,X^
0qFH
s
private static final int THRESHOLD = 10; MEiRj]t
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8)z\n
/* B%\g kl
* (non-Javadoc) 5HS~op2n/
* q*)+K9LRk
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rbqo"g`
*/ ,L OQDIyn
public void sort(int[] data) { N]YtLa,t
int[] temp=new int[data.length]; J g$xO@.
mergeSort(data,temp,0,data.length-1); Ei({`^
} 23DJV);g8
s0hBbL0DH
private void mergeSort(int[] data, int[] temp, int l, int r) { #hw/^AaD-
int i, j, k; b.2J]6G
int mid = (l + r) / 2; 3_5XHOdE
if (l == r) W0cgI9=9
return; %}>dqUyQ
if ((mid - l) >= THRESHOLD) /Y^8SO4
mergeSort(data, temp, l, mid); |vFj*XU
else `3q;~ 9
insertSort(data, l, mid - l + 1); "'Z- UV
if ((r - mid) > THRESHOLD) [*m2
mergeSort(data, temp, mid + 1, r); 4QJ8Z t
else y 0ckm6^
insertSort(data, mid + 1, r - mid); P|jF6?C
=GR'V
for (i = l; i <= mid; i++) { Dmdy=&G
temp = data; 8n?kZY$,
} 9j|gdfb%ml
for (j = 1; j <= r - mid; j++) { %zo=
K}u
temp[r - j + 1] = data[j + mid];
l+y-Fo@
} 34|a:5c
int a = temp[l]; H]#Rg`~n
int b = temp[r]; l)+:4N?iVv
for (i = l, j = r, k = l; k <= r; k++) { .>6 Wv0
if (a < b) { Z$ KV&.=+
data[k] = temp[i++]; @\Js8[wS9@
a = temp; +K6szGP
} else { <Mf*l)%*
data[k] = temp[j--]; '7Ig.K&
b = temp[j]; ,7d|O}B
} o`r(`6@
} YTyX`Y#
} +iF
1sC_
#^mqQRpgq
/** ]y1fM0
* @param data tjv\)Nn'
* @param l Q* O<@
* @param i v@u<Ww;=@
*/ O%1/r*
private void insertSort(int[] data, int start, int len) { q'(z #h,cv
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); {)K](S
~
} FE m=w2
} nwM)K
} h
; kfh.
} )%JD8;[Jq
Yr&Ka:
堆排序: &:#m&,tQ
.]76!(fWZ
package org.rut.util.algorithm.support; =ak7ldA=2
9XV^z*E(J
import org.rut.util.algorithm.SortUtil; IjZ@U%g@;
NW.XA! =E)
/**
CB*/ =Y
* @author treeroot hG Apuy
* @since 2006-2-2 Dl;d33
* @version 1.0 KAb(NZK
*/ ,{<p
public class HeapSort implements SortUtil.Sort{ d\]O'U)s
OV5e#AOy)
/* (non-Javadoc) ESDB[
O+`x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :):zNn_>`
*/ %<}=xJf>1
public void sort(int[] data) { qa!RH]B3
MaxHeap h=new MaxHeap(); HcJE0-"
h.init(data); l
C\E
for(int i=0;i h.remove(); wq72%e
System.arraycopy(h.queue,1,data,0,data.length); e.X@] PQJQ
} n,KA&)/s
aR:<<IF\
private static class MaxHeap{ Fh`-(,e?5
W(@>?$&
void init(int[] data){ k:P$LzIB
this.queue=new int[data.length+1]; |< N frz
for(int i=0;i queue[++size]=data; NfF~dK|
fixUp(size); koH4~m{
} %D^bahf
} &`@M8-m#F
|%ZpatZA5
private int size=0; fS./y=j(X
6GKT yN
private int[] queue; J E)J<9gf
u7muaSy
public int get() { `-D$Fsl
return queue[1]; EUwQIA2c8N
} r'd/qnd
}[,3yfiX
public void remove() { ~n]NyVFP
SortUtil.swap(queue,1,size--); ?'2 v.5TQt
fixDown(1); c$#GM57V
} .3g&9WvN!Z
file://fixdown 2X_ >vIlEm
private void fixDown(int k) { qeMv
Vf
int j; T}2:.Hk:N
while ((j = k << 1) <= size) { pF='jj51
if (j < size %26amp;%26amp; queue[j] j++; 'rx?hL3VW
if (queue[k]>queue[j]) file://不用交换 ;](h2Z`3s
break; .&(8(C
SortUtil.swap(queue,j,k); 4e/cqN6
k = j; sV'v*
1|
} |#cAsf_{
} 9cOx@c+/
private void fixUp(int k) { E$T(Qu<-
while (k > 1) { 0pNo`Bm
int j = k >> 1; #HDesen
if (queue[j]>queue[k]) !Mil?^
break; _m7co :
SortUtil.swap(queue,j,k); )KE_t^$
k = j; M c@GH
} )l{A{f6O
} YOKR//|3
N
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} >
Z++^YVE
.Qk{5=l6P
} `]hCUaV
ZvyjMLf
SortUtil: h60\ Y 8
-eq=4N=s
package org.rut.util.algorithm; uWrFunh%
}s6G!v^2""
import org.rut.util.algorithm.support.BubbleSort; ;/aB)JZ5=
import org.rut.util.algorithm.support.HeapSort; CK Mv7
import org.rut.util.algorithm.support.ImprovedMergeSort; Z^+a*^w~{
import org.rut.util.algorithm.support.ImprovedQuickSort; D1!
{S7
import org.rut.util.algorithm.support.InsertSort; 1t%<5O;R
import org.rut.util.algorithm.support.MergeSort;
wQw-:f-
import org.rut.util.algorithm.support.QuickSort; q]+)c2M
import org.rut.util.algorithm.support.SelectionSort; =g[H]-Ee
import org.rut.util.algorithm.support.ShellSort; um}N%5GAa
_r7=&oL.Q
/** ^#7viZ*
* @author treeroot fOJj(0=y
* @since 2006-2-2 xcnt?%%M
* @version 1.0 'ucGt
*/ h=Oh9zsz8
public class SortUtil { X{s/``n
public final static int INSERT = 1; (L:`ojiU
public final static int BUBBLE = 2; 'XEK&Yi1
public final static int SELECTION = 3; F_ _H(}d
public final static int SHELL = 4; mf~Lzp
public final static int QUICK = 5; X,&xhSzg?
public final static int IMPROVED_QUICK = 6; {\lui eG
public final static int MERGE = 7; {NY]L==H
public final static int IMPROVED_MERGE = 8; N[]U%9[=2F
public final static int HEAP = 9; ny~W]1
w. vY(s
public static void sort(int[] data) { ,0FwBK
sort(data, IMPROVED_QUICK); =E;
#OZO
} CHg]U l
private static String[] name={ Z3Gm
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" SCI1bMf
}; &EGY+p|2Y
n)Hk8)^8
private static Sort[] impl=new Sort[]{ RAdvIIQp:
new InsertSort(), T[m ~6
new BubbleSort(), .oEFX8
new SelectionSort(), EuLXtq
new ShellSort(), A
mvw`u>
new QuickSort(), 0|GpZuGO9
new ImprovedQuickSort(),
a2[8wv1
new MergeSort(), $xQ"PJ2
new ImprovedMergeSort(), yX3PUO9
new HeapSort() phe"JNML
};
IF& PGo
G1p43
public static String toString(int algorithm){ v'K
% %z
return name[algorithm-1]; _>;&-e
} z?I+u*rF6
Mo~ki"9.
public static void sort(int[] data, int algorithm) { /XjN%|
impl[algorithm-1].sort(data); vB=;_=^i1
} Bmmb
|z ]aa
public static interface Sort { |}%(6<
public void sort(int[] data); v?FhG
b~1
} Euqjxz
`~0P[>|+
public static void swap(int[] data, int i, int j) { z( *]'Y
int temp = data; l#p}{
data = data[j]; KQ- ,W8Q5
data[j] = temp; a (P^e)<
} P_v0))n{
} }FHw"
{my