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。 U70]!EaT
插入排序: 0G2g4DSKD
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package org.rut.util.algorithm.support; (?b@b[D~4
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import org.rut.util.algorithm.SortUtil; }Y17*zp%
/** xyE1Gw`V
* @author treeroot {A o,t+j
* @since 2006-2-2 9lo[&^<
* @version 1.0 'snYu!`z
*/ iYbX
public class InsertSort implements SortUtil.Sort{ cubk]~VD
n!E2_
/* (non-Javadoc) T=YzJyQC)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) **[Z^$)u(
*/ X{-9FDW
public void sort(int[] data) { 9OfFM9(:
int temp; fXQiNm[P
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;*[9Q'lI*
} 1SV^ ){5I
} NS,5/t
} ag4`n:1
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} ]fI/(e_U
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冒泡排序: b( ^^m:(w
swc@34ei\
package org.rut.util.algorithm.support; oAZh~~tp
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import org.rut.util.algorithm.SortUtil; O8N[Jl
ehAu^^Q>
/** HZ*0QgW\(5
* @author treeroot vG2b:[W
* @since 2006-2-2 <39!G7ny
* @version 1.0 lKEa)KF[
*/ Y#01o&f0n
public class BubbleSort implements SortUtil.Sort{ 8 )\M:s~7&
qOG}[%<^n7
/* (non-Javadoc) [W,-1.$!dM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n|4;Hn1V
*/ hD<f3_k
public void sort(int[] data) { XL}<1-}
int temp; L6i|:D32p
for(int i=0;i for(int j=data.length-1;j>i;j--){ %E27.$E_
if(data[j] SortUtil.swap(data,j,j-1); ~-F?Mc
} uC]Z8&+obb
} 7=*VpX1
} |H ;+1
} 7XyOB+aQO
4o9$bv
} I2HT2c$
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选择排序: y02u?wJ
XvSIWs
package org.rut.util.algorithm.support; }+Vv0jX|V
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import org.rut.util.algorithm.SortUtil; qSO*$1i
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/** ,dd WBwMK
* @author treeroot aN^IP
* @since 2006-2-2 hGP1(pH.
* @version 1.0 Vul+]h[!h
*/ q3'o|pp
public class SelectionSort implements SortUtil.Sort { 0d\~"4 R
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/* rvwy~hO"
* (non-Javadoc) M>_ = "atI
* I/UQ' xx
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 77:'I
*/ wh~sZ
public void sort(int[] data) { %TK&)Q% h5
int temp; O=jN&<rb
for (int i = 0; i < data.length; i++) { DPJh5d
int lowIndex = i; MPRO
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for (int j = data.length - 1; j > i; j--) { 3^G96]E
if (data[j] < data[lowIndex]) { mT_GrIl[
lowIndex = j; CJqc\I~
} E:VGji7s
} <uF [,
SortUtil.swap(data,i,lowIndex); _q Tpy)+
} pX<a2FP
} S>ugRasZ$
B[xR-6phW
} Xi~9&ed#$i
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Shell排序: h}=M^SL
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package org.rut.util.algorithm.support; $+:(f{Va*
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import org.rut.util.algorithm.SortUtil; nN ~GP"}
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/** }#aKFcvg
* @author treeroot >x'bZ]gm
* @since 2006-2-2 =[(1my7
* @version 1.0 mTEVFm
*/ =&0U`P$`
public class ShellSort implements SortUtil.Sort{ _@ i>s,
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/* (non-Javadoc) $ly0h W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }~*rx7p
*/ lvufk VG|
public void sort(int[] data) { XN;/nU
for(int i=data.length/2;i>2;i/=2){ 6D9o08
for(int j=0;j insertSort(data,j,i); ~Ob8i 1S>
} :k1$g+(lP
} Z! YpklZ?~
insertSort(data,0,1); 4
10:%WGc
} ULvVD6RQ47
&] 3:D
/** yzc pG6,
* @param data 1 !s28C5u
* @param j &`PbO
* @param i j+1KNH
*/ YkbO&~.
private void insertSort(int[] data, int start, int inc) { DM2Q1Dh3
int temp; YZ[%uArm
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &"j@79Ym1~
} !P" ?
} B+D`\ Nl o
} fSV5
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} h[l{ 5Z*
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快速排序: A[ 1)!e
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package org.rut.util.algorithm.support; J<_ 1z':W)
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import org.rut.util.algorithm.SortUtil; R`C.ha
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/** {Tx 3$eU
* @author treeroot K.h]JD]o
* @since 2006-2-2 Fd"WlBYy0
* @version 1.0 f%1wMOzx
*/ $SF3odpt
public class QuickSort implements SortUtil.Sort{ Th+|*=Il
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/* (non-Javadoc) k6g|7^es2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4(iS-8{J
*/ 7z>+w
public void sort(int[] data) { L{K*~B -p
quickSort(data,0,data.length-1); 4JK@<GBK6
} 2))t*9;h
private void quickSort(int[] data,int i,int j){ ;@'0T4Z&l
int pivotIndex=(i+j)/2; sWW\bK0B4
file://swap WH;xq^
SortUtil.swap(data,pivotIndex,j); <tQXK;
eH
`t \n
int k=partition(data,i-1,j,data[j]); .9I_NG
SortUtil.swap(data,k,j); Dtt\~m;AR
if((k-i)>1) quickSort(data,i,k-1); &"O_wd[+:
if((j-k)>1) quickSort(data,k+1,j); 'Ix5,^M}B
I~'gK8<e7
} >";%2u1
/** N
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* @param data (>r|j4$
* @param i "9u-lcQ\
* @param j >2t
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* @return %g5jY%dg.r
*/ ~W/}:;
private int partition(int[] data, int l, int r,int pivot) { -|$* l
Q
do{ yx 7loy$[
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); eFes+i( 35
SortUtil.swap(data,l,r); [5-!d!a|st
} |/2LWc?
while(l SortUtil.swap(data,l,r); 0 c,bet{m
return l; H7J`]nr6
} qY# m*R
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} ,$o-C&nC
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改进后的快速排序: fyGCfM
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package org.rut.util.algorithm.support; ~S!L!qY
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import org.rut.util.algorithm.SortUtil; M44_us
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/** \8
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* @author treeroot ~igRg~k:/
* @since 2006-2-2 ?UU5hek+m
* @version 1.0 J,6!7a
*/ !Q[;5Lqt
public class ImprovedQuickSort implements SortUtil.Sort { 'o7R/`4KR
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private static int MAX_STACK_SIZE=4096; l85O-g}M
private static int THRESHOLD=10; ]cS&8{ ^2
/* (non-Javadoc) a"MTQFm'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BW+qp3 k\
*/ #!(Zn:[
public void sort(int[] data) { #}nBS-+
int[] stack=new int[MAX_STACK_SIZE]; gCjH%=s
#tCIuQ,
int top=-1; 2#,8evH
int pivot; f|;HS!$
int pivotIndex,l,r; *G8'Fjin'T
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stack[++top]=0; JkRGt Yq
stack[++top]=data.length-1; fp`U?S6
hnH)Jy;>
while(top>0){ aY3pvOV
int j=stack[top--]; h[vAU 9f)
int i=stack[top--]; 1uKD&k%q
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pivotIndex=(i+j)/2; pT|./ Fe
pivot=data[pivotIndex]; .N?|t$J
M'pY-/.
SortUtil.swap(data,pivotIndex,j); EU`'
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file://partition ,C5@P+A
l=i-1; F#zQQ)(Pf
r=j; |:`?A3^m#
do{ e7)> U!9c9
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); iPRJA{$b_
SortUtil.swap(data,l,r); 4nX'a*'D~}
} +_vm\]4
while(l SortUtil.swap(data,l,r); 7lnM|nD
SortUtil.swap(data,l,j); o.v,n1Nm
Q*TQ*J7".X
if((l-i)>THRESHOLD){ ]~4}(\u
stack[++top]=i; 0TuNA\Ug+
stack[++top]=l-1; b}"vIRz
} 6
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if((j-l)>THRESHOLD){ Y9lbf_51
stack[++top]=l+1; *,Aa9wa{
stack[++top]=j; fSgGQ
D4
} )o}=z\M-bN
uC <|T
} &q"uy:Rd
file://new InsertSort().sort(data); \`p |,j
insertSort(data); X"]mR7k
} '6Rs0__
/** z.Ve#~\
* @param data q[We][Nrzb
*/ b*$o[wO9
private void insertSort(int[] data) { .pNq-T
int temp; =}6Z{}(TT
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); RQ_#rYmT
} ~a0d.dU
} r;5 AY
} G5X|JTzpu<
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} x&6i@ Jl
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归并排序: Jf8'N
ot
MXu+I,y*
package org.rut.util.algorithm.support; NR@SDW
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import org.rut.util.algorithm.SortUtil; Y
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/** !Dhfr{
* @author treeroot _^,[wD
* @since 2006-2-2 j2C^1:s@m
* @version 1.0 %'p|JS
*/ YC+ZVp"v
public class MergeSort implements SortUtil.Sort{ \)s 3]/"7
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/* (non-Javadoc) 55)ep
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !{|yAt9kP
*/ N'q/7jOy
public void sort(int[] data) { *?
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int[] temp=new int[data.length]; M KE[Yb?
mergeSort(data,temp,0,data.length-1); #0$eTdx#
} B3i=pcef
_{@}Fd?o
private void mergeSort(int[] data,int[] temp,int l,int r){ I$sm5oL
int mid=(l+r)/2; j4hUPL7
if(l==r) return ; !&:.Uh
mergeSort(data,temp,l,mid); 3hpz.ISk
mergeSort(data,temp,mid+1,r); -_H2FlB
for(int i=l;i<=r;i++){ V3Rnr8
temp=data; 7H@Cy}a
} laIC}!
int i1=l; %nK15(
int i2=mid+1; x[,wJzp\6
for(int cur=l;cur<=r;cur++){ 6T
aT_29
if(i1==mid+1) */@bNT9BgO
data[cur]=temp[i2++]; wBaFC\CW
else if(i2>r) pJ@DHj2@
data[cur]=temp[i1++]; Kps
GQM
else if(temp[i1] data[cur]=temp[i1++]; lKD<
else x'PjP1
data[cur]=temp[i2++]; rzY@H }u
} jjlCi<9CQ^
} ;@UX7NA
%QcG^R
} t7`Pw33#kY
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改进后的归并排序: qSs^}eN
N`^W*>XB
package org.rut.util.algorithm.support; ${H&Q*
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import org.rut.util.algorithm.SortUtil; ?^A:~" ~
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/** `e69kBAm
* @author treeroot #~qp8
w
* @since 2006-2-2 {xx;zjt%}}
* @version 1.0 ]3cf}Au
*/ %3B>1h9N
public class ImprovedMergeSort implements SortUtil.Sort { ?;QKe0I^
xRZT
private static final int THRESHOLD = 10; xa axj
N=q29JU
/* w)c#ZJHG
* (non-Javadoc) m<HjL
* @g5]w&o_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !ef)Ra-W
*/ 2PW3S{D t
public void sort(int[] data) { ^mb*w)-p?
int[] temp=new int[data.length]; :fQ*'m,
mergeSort(data,temp,0,data.length-1); 43]&SXprH
} \)
ONy9
DcM+K@1E4^
private void mergeSort(int[] data, int[] temp, int l, int r) { ^]K)V
int i, j, k; 1j-i nj`
int mid = (l + r) / 2; YLd%"H $n
if (l == r) I!#^F1p1
return; &BR?;LD
if ((mid - l) >= THRESHOLD) Bd[}A9O[
mergeSort(data, temp, l, mid); 89dC
bF3b
else LKG|S<s
insertSort(data, l, mid - l + 1); !ry+ r!"
if ((r - mid) > THRESHOLD) bhT]zsBK
mergeSort(data, temp, mid + 1, r); OH~qJ<
else xef7mx
insertSort(data, mid + 1, r - mid); 'hWRwP|
j>M%?Tw
for (i = l; i <= mid; i++) { QrA+W\=_`y
temp = data; :S2MS{>Mo
} >FhBl\oIi
for (j = 1; j <= r - mid; j++) { Y'R1\Go-
temp[r - j + 1] = data[j + mid]; @~HD<K
} &(7Io?
int a = temp[l]; j+_75t`AZ
int b = temp[r]; <:o><f+
for (i = l, j = r, k = l; k <= r; k++) { p.olXP
if (a < b) { ?Fw/c0
data[k] = temp[i++]; s os&
a = temp; r}bKVne
} else { hR{Zh>
data[k] = temp[j--]; EeJ]>
1
b = temp[j]; ,B!Qv3bn
} zt6ep=
} i>}z$'X
} ?a(3~dh|
4v$AM8/o
/** c9
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* @param data f{oWd]eAhb
* @param l a#=-Aj-
* @param i :gC2zv
*/ c i>=45@J
private void insertSort(int[] data, int start, int len) { }+1o D{
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); rG6/h'!|
} T~E83Jw
} e^TF.D?RS
} 6h%(0=^
} N0f}q1S<-A
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堆排序: I 3PnyNZ
}z#8vE;
package org.rut.util.algorithm.support; :h@:F7N _
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import org.rut.util.algorithm.SortUtil; b :00w["
JZ
[&:
/** L`v,:#Y
* @author treeroot I(SE)%!%S
* @since 2006-2-2 |)?T([
* @version 1.0 U$}]zaB
*/ HN+z7 Q8hH
public class HeapSort implements SortUtil.Sort{ U@WT;:.T
i^(<E0vS
/* (non-Javadoc) oZCO$a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HYS7=[hv6
*/ 5l#)tX.by
public void sort(int[] data) { |rQ;|+.
MaxHeap h=new MaxHeap(); "fdG5|NJe
h.init(data); {H74`-C)W
for(int i=0;i h.remove(); <jF <_j
System.arraycopy(h.queue,1,data,0,data.length); n>'}tT)U
} #XZ?,neY
\=JKeL|6[S
private static class MaxHeap{ '
BpRi N
R0WJdW#
void init(int[] data){ "d'@IN
this.queue=new int[data.length+1]; eJ'ojc3
for(int i=0;i queue[++size]=data; jiat5
fixUp(size); d
{4br
} =z+zg^wsT
} OB%y'mo7]
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private int size=0; ]So%/rOvX
Qa=;Elp:[
private int[] queue; })Jp5vv
_]g6
3q
public int get() { s$;v )w$
return queue[1]; UZ$p wjC
} -9mh|&z`
BshS@"8r
public void remove() { 4{TUoI6ii
SortUtil.swap(queue,1,size--); rlq8J/0/+
fixDown(1); .dV!d u
} 6O}r4*
file://fixdown *7ox_ R@
private void fixDown(int k) { P&K~wP]
int j; Rs dACP
while ((j = k << 1) <= size) { b3ZPlLx6
if (j < size %26amp;%26amp; queue[j] j++; oKUJB.PF
if (queue[k]>queue[j]) file://不用交换 J
GdVSjNC
break; V>hy5hDpH
SortUtil.swap(queue,j,k); Kxq~,g=t
k = j; M1:m"#=
} a)]N#gx
} /CP1mn6H
private void fixUp(int k) { :\ S3[(FV
while (k > 1) { iH2|w
int j = k >> 1; {pqm&PB04
if (queue[j]>queue[k]) 8r5j~Df
break; %}@^[E)
SortUtil.swap(queue,j,k); =8]'/b
k = j; |cH\w"DcXw
} <B)lV'!Bd
} WVVqH_
b|EZ;,i
} MDRSI g
o_cj-
} #8'%CUF*<8
T"$"`A"
SortUtil: wi!Ml4Sb
1\1o65en
package org.rut.util.algorithm; :)+cI?\#
wFh{\
import org.rut.util.algorithm.support.BubbleSort; 5)}xqE"x
import org.rut.util.algorithm.support.HeapSort; ^OUkFH;dG?
import org.rut.util.algorithm.support.ImprovedMergeSort; {W0@lMrD
import org.rut.util.algorithm.support.ImprovedQuickSort; |
#,b1|af
import org.rut.util.algorithm.support.InsertSort; JI.ad_IR
import org.rut.util.algorithm.support.MergeSort; "UE'dWz
import org.rut.util.algorithm.support.QuickSort; >LjvMj ]
import org.rut.util.algorithm.support.SelectionSort; VBOq~>V6(v
import org.rut.util.algorithm.support.ShellSort; -IPc;`<
J=()
A+
/** D.RHvo~6
* @author treeroot 7.]ZD`"Bb
* @since 2006-2-2 x;ujR<
* @version 1.0 *F=wMWa
*/ t.NG]ejZ
public class SortUtil { <#:"vnm$j
public final static int INSERT = 1; @L`t/OD
public final static int BUBBLE = 2; @n<WM@|l
public final static int SELECTION = 3; 4rv3D@E
public final static int SHELL = 4; "}EydG"=
public final static int QUICK = 5; sURHj&:t|
public final static int IMPROVED_QUICK = 6; Dk:Zeo]+my
public final static int MERGE = 7; ndN8eh:OR
public final static int IMPROVED_MERGE = 8; P\SE_*&
public final static int HEAP = 9; 1h|JKu0
QGfU:
public static void sort(int[] data) { "",V\m
sort(data, IMPROVED_QUICK); -8g ;t3z
} qW),)i
private static String[] name={ UAa2oY&
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 2uz<n}IV
}; ceAK;v
o
NFsMc0{
private static Sort[] impl=new Sort[]{ Si!W@Jm
new InsertSort(), oMcX{v^"
new BubbleSort(), 74QWGw`,
new SelectionSort(), 'R= r9_%
new ShellSort(), b bX2D/
new QuickSort(), G.1pg]P!
new ImprovedQuickSort(), \#
new MergeSort(), +\SbrB P
new ImprovedMergeSort(), (m})V0/`
new HeapSort() ]e 81O#t3
}; yjc:+Y{5'
Q']:k}y
public static String toString(int algorithm){ \3Ys8umKq
return name[algorithm-1]; |0BmEF
} ,0;E_i7
t/pHdxX*C7
public static void sort(int[] data, int algorithm) { az\;D\\
impl[algorithm-1].sort(data); V\^?V|
} 19h8p>Sx0
F(:+[$)
public static interface Sort { `
Y"Rh[C
public void sort(int[] data); ^<7)w2ns
} pJ 1GB
++BVn[ 1
public static void swap(int[] data, int i, int j) { xqX~nV#TB
int temp = data; @zW'!Ol
data = data[j]; >cQ*qXI0
data[j] = temp; f?[IwA`
} lhKd<Y"
} =k'3rm*ld