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。 :cOwTW?Fj
插入排序: Vbwbc5m}
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package org.rut.util.algorithm.support; >`6^1j(3
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import org.rut.util.algorithm.SortUtil; lRO4-
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/** ftK.jj1:
* @author treeroot }$b/g
* @since 2006-2-2 /WM
: Bj
* @version 1.0 >CYg\vas!
*/ i4- >XvC
public class InsertSort implements SortUtil.Sort{ V,>#!zUv
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/* (non-Javadoc) BkIvoW_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "Uyw7
*/ Q,s,EooIx
public void sort(int[] data) { <H$ CCo
int temp; ']qC,;2
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >Vn!k N6\
} H#1/H@I#
} C#gQJ=!B
} Wve ^2lkoK
wv1?v_4
} /1O6;'8He
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冒泡排序: ,x_g|J _Y
w|>Y&/IX
package org.rut.util.algorithm.support; /a]+xL
3 \kT#nr
import org.rut.util.algorithm.SortUtil; xvgIYc{
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/** ; I=z
* @author treeroot E
fqa*,k
* @since 2006-2-2 ;T/' CD
* @version 1.0 ~kYF/B2*
*/ RRV&!<l@$
public class BubbleSort implements SortUtil.Sort{ ;E*ozKpm
J,E&Uz95%
/* (non-Javadoc) FCI38?`%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L:'Y#VI{
*/ S_\RQB\l
public void sort(int[] data) { RzyEA3L'
int temp; d/7c#er
for(int i=0;i for(int j=data.length-1;j>i;j--){ $bMeL7CN
if(data[j] SortUtil.swap(data,j,j-1); 5m_@s?P[
} oE5+
} +[*UC"
} S-v9z:M3
} \Ud2]^D=
F.O2;M|x
} Va9vDb6
E{j6OX\
选择排序: Ju:=-5r"'
dAga(<K
package org.rut.util.algorithm.support; ^ 41p+
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import org.rut.util.algorithm.SortUtil; !vG._7lPp
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/** 6.ap^9AD
* @author treeroot n+xM))
* @since 2006-2-2 mv+.5X
* @version 1.0 J_`.w
*/ EQ7cK63
public class SelectionSort implements SortUtil.Sort { OD*DHC2rN]
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/* W[YcYa_tQ
* (non-Javadoc) gzw[^d
* !WDdq_n*v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %d*}:295
*/ t7lRMCN
public void sort(int[] data) { ,ll!19y
int temp; fV[xv4D.
for (int i = 0; i < data.length; i++) { ` 3<#DZ;!
int lowIndex = i; &M<431y
for (int j = data.length - 1; j > i; j--) { 1f~_# EIC
if (data[j] < data[lowIndex]) { X2o5Hc)l<
lowIndex = j; Y/{Z`}
} rNI3_|a
} \QHM7C T
SortUtil.swap(data,i,lowIndex); jQf1h|e
} _Hkc<j/e~
} 0E+ +
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} W/J3sAYv
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Shell排序: UY>{e>/H9
78 3a Z8
package org.rut.util.algorithm.support; r}XD{F}"
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import org.rut.util.algorithm.SortUtil; f *)t<1f
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/** {'{ssCL
* @author treeroot g%^Zq"
* @since 2006-2-2 h~<#1'/<
* @version 1.0 .llAiv
*/ b}[{'
public class ShellSort implements SortUtil.Sort{ F7=a|g
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/* (non-Javadoc) W;j*lII
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q E(`@G
*/ @ /c{gD
public void sort(int[] data) { UIzk-.<
for(int i=data.length/2;i>2;i/=2){ _{T`ka
for(int j=0;j insertSort(data,j,i); $k}+,tHtJO
} W6]iJ
} |[xi"E\
insertSort(data,0,1); MJ>(HJY6?%
} -7\RO%U
g2F~0%HY
/** XjL( V1
* @param data #bf^Pq'8
* @param j =(v/pLLK?
* @param i -Xx,"[sN\w
*/ Xa%Z0%{
private void insertSort(int[] data, int start, int inc) { ,P5HR+h
int temp; yUBic~S
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); <sd
Qvlx$-
} \$9S_z
} V8&%f xn+
} wwE9|'Ok
/&vUi7'
} C$rZn%dp(
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快速排序: BXLhi(.s
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package org.rut.util.algorithm.support; }p."7(
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import org.rut.util.algorithm.SortUtil; ~d>O.*Q)
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/** JQI`9$asuC
* @author treeroot %M~Ugv_4v
* @since 2006-2-2 I]TL#ywF
* @version 1.0 ca$D|3
*/ R?^FO:nM%!
public class QuickSort implements SortUtil.Sort{ uy 7)9w
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/* (non-Javadoc) sE]eIN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `5h$@
*/ `s@1'IG;R_
public void sort(int[] data) { qAkx52v6
quickSort(data,0,data.length-1); Y|KX:9Y@
} 5wr0+Xo
private void quickSort(int[] data,int i,int j){ sp'q=^t
int pivotIndex=(i+j)/2; '(I"54W
file://swap &zUo", }9
SortUtil.swap(data,pivotIndex,j); W~R_-
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2<YHo{0BLS
int k=partition(data,i-1,j,data[j]); lD\lFN(:
SortUtil.swap(data,k,j); #& Rx(
if((k-i)>1) quickSort(data,i,k-1); rHN>fySn7
if((j-k)>1) quickSort(data,k+1,j); l,pq;>c9a
uV=rLDY
} 8={(Vf6
/** <K|_M)/9
* @param data |
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* @param i mrk Q20D
* @param j (r:WG!I,
* @return [Fjh
*/ ; N!K/[p=
private int partition(int[] data, int l, int r,int pivot) { x4Eq5"F7}
do{ 0jE,=<W0>
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); nn5S 7!
SortUtil.swap(data,l,r); B.|2w
} #S_LKc
while(l SortUtil.swap(data,l,r); aRj3TtFh
return l; r=8]Ub[
} +qjW;]yxP
nM\Wa
} &<k)W
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改进后的快速排序: E70
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package org.rut.util.algorithm.support; Xs*~[k'
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import org.rut.util.algorithm.SortUtil; T3wR0,
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/** I0GL/a4s
* @author treeroot Eq'YtqU
* @since 2006-2-2 Y"G$^3% (]
* @version 1.0 Koahd=
*/ aD24)?db-
public class ImprovedQuickSort implements SortUtil.Sort { H~@aT7
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private static int MAX_STACK_SIZE=4096; wf<uG|90
private static int THRESHOLD=10; {I`B?6K5
/* (non-Javadoc) Iu%/~FgPj{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ApjLY58=
*/
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public void sort(int[] data) { /vSFQ}W
int[] stack=new int[MAX_STACK_SIZE]; ]qhVxeUm
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int top=-1; ]!0 BMZmf
int pivot; v;jrAND
int pivotIndex,l,r; u&r@@p.
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stack[++top]=0; ;k(|ynXv
stack[++top]=data.length-1; ~d){7OG
)Q~Q.
while(top>0){ 5N`g
int j=stack[top--]; |LiFX5!\
int i=stack[top--]; s^js}9]p
9]7+fu
pivotIndex=(i+j)/2; f}nGWV%,
pivot=data[pivotIndex]; x8tRa0-q
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SortUtil.swap(data,pivotIndex,j); ]N2'L!4|;
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file://partition ;,@3bu>r
l=i-1; Ba!`x<wa
r=j; YVD%GJ
do{ UU$ +DL
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); plb'EP>e
SortUtil.swap(data,l,r); G@ed2T
} ;bkS0Vmg
while(l SortUtil.swap(data,l,r); ~8}"X] 4
SortUtil.swap(data,l,j); m6+2rD
PY)C=={p
if((l-i)>THRESHOLD){ si%f.A #
stack[++top]=i; g)u2
stack[++top]=l-1; y)Ip\.KV\
} E5-8tHV
if((j-l)>THRESHOLD){ r(%#@?&
stack[++top]=l+1; ax7ub
stack[++top]=j; VO. Y\8/
} Ya304Pjd
DCP"
} (J$JIPF
file://new InsertSort().sort(data); 3l5q?" $
insertSort(data);
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} .Uha %~%
/** aH,0+ |
* @param data lt5~rH2
*/ ag[ yM
private void insertSort(int[] data) { khc5h^0
int temp; x\I9J4Q
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); TS-m^Y'R
} |~#!e}L(
} }5zH3MPQH
} cf@:rHB}
h#;fBQ]
} \A keC 6[D
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归并排序: tv\P$|LV`8
LW ntZ.
package org.rut.util.algorithm.support; ~cU,3g
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import org.rut.util.algorithm.SortUtil; v\$XhOK
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/** VUagZ7p
* @author treeroot sN^R Z0!>
* @since 2006-2-2 4Q_2GiF_
?
* @version 1.0 A -c3B+
*/ p.8G]pS
public class MergeSort implements SortUtil.Sort{ qhL e[[>
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/* (non-Javadoc) 6i=m1Yk
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?%*Zgk!l7
*/ nVs0$?}
public void sort(int[] data) { evu @uq
int[] temp=new int[data.length]; c|96;=z~
mergeSort(data,temp,0,data.length-1); v<3i ~a
} &[23DrI8
lq1pgM ?Kf
private void mergeSort(int[] data,int[] temp,int l,int r){ V..m2nQj
int mid=(l+r)/2; ^J@Y?CQl\
if(l==r) return ; [8O`VSV3
mergeSort(data,temp,l,mid); vTP'\^;
mergeSort(data,temp,mid+1,r); /$+ifiFT
for(int i=l;i<=r;i++){ :+!hR4Z~\;
temp=data; CO5?UgA
} 'DRyOJn r
int i1=l; &ATjDbW*(
int i2=mid+1; }g>&l.2X
for(int cur=l;cur<=r;cur++){ ]>*Z 1g;
if(i1==mid+1) =GFlaGD
data[cur]=temp[i2++]; |w:7).P
else if(i2>r) *hFT,1WE=+
data[cur]=temp[i1++]; vF1]L]z:?
else if(temp[i1] data[cur]=temp[i1++]; !mq+Oz~
else 7tit>dJ
data[cur]=temp[i2++]; HQv#\Xi1
} )jCAfdnCs
}
`6Y'H2WJ?
"m/0>UU0
} 9dSKlB5J
+}X@{DB
改进后的归并排序: 80axsU^H0
M0"xDvQ
package org.rut.util.algorithm.support; pbloL3d.;+
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import org.rut.util.algorithm.SortUtil; fu\M2"e
A!goR-J]
/** '1/uf;OXIH
* @author treeroot NWb,$/7T
* @since 2006-2-2 GZ*cV3Y`&
* @version 1.0 Q6"r^wWx
*/ I9k o*f
public class ImprovedMergeSort implements SortUtil.Sort { b[$l{RQ[?
~H)b vN^
private static final int THRESHOLD = 10; NqlG= pu
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/* :|N5fkhN
* (non-Javadoc) A4 o'EQ?~
* Ko2{[%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gnx!_H\h<
*/ vY}/CBmg
public void sort(int[] data) { uK3,V0 yz
int[] temp=new int[data.length]; =#n|t[h-
mergeSort(data,temp,0,data.length-1); A2*z
} G#3 O^,m
W}a&L
private void mergeSort(int[] data, int[] temp, int l, int r) { cFD(Ap
int i, j, k; PHZA?>Q7Z
int mid = (l + r) / 2; }3=]1jH6
if (l == r) ),dXaP[
return; R279=sO,J
if ((mid - l) >= THRESHOLD) d,+d8X
mergeSort(data, temp, l, mid); >g8Tl`P,iN
else VmV/~- <Z
insertSort(data, l, mid - l + 1); !W .ooy5(
if ((r - mid) > THRESHOLD) $WrDZU 2z
mergeSort(data, temp, mid + 1, r); h]vA%VuE'E
else r5tv9#4]
insertSort(data, mid + 1, r - mid); BWfsk/lej
D]Bvjh
for (i = l; i <= mid; i++) { /<
h~d
temp = data; E3;[*ve
} Y2QlK1.8V
for (j = 1; j <= r - mid; j++) { [p[Kpunr{l
temp[r - j + 1] = data[j + mid]; rFdq \BSi
} wUW+S5"K
int a = temp[l]; \ec,=7S<Zf
int b = temp[r]; 7L? ~;;L$
for (i = l, j = r, k = l; k <= r; k++) { {b=]JPE
if (a < b) { g' H!%<
data[k] = temp[i++]; 8L6!CP_!
a = temp; %R-"5?eTtu
} else { iK= {pd
data[k] = temp[j--]; 3dQV5E.
b = temp[j]; $Rd74;edn
} *|a_(bQ4@
} -:AknQq
} P*)}ENY
^)D[ W(*
/** Et4gRS)\
* @param data >Vn;1 |w
* @param l '@ (WT~g
* @param i \h,S1KmIBD
*/ /\_0daUx
private void insertSort(int[] data, int start, int len) { oCXBek?\
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); j#Bea ,
} 31Y+bxQ
} mJ)o-BV
} j%#n}H
} <p-R{}8
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堆排序: `N]!-=o
u-f_,],p
package org.rut.util.algorithm.support; al(t-3`<
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import org.rut.util.algorithm.SortUtil; Z Z\,iT
gle_~es'K
/** g3Xq@RAJ c
* @author treeroot BD\xUjd?)Q
* @since 2006-2-2 @K3<K(
* @version 1.0 HYZ94[Ti
*/ 'Oyz/P(p
public class HeapSort implements SortUtil.Sort{ E#Smi507p
"z1\I\
^
/* (non-Javadoc) GxuFO5wz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AQDT6E:
*/ wm=!tx\`k
public void sort(int[] data) { =3_I;Lw
MaxHeap h=new MaxHeap(); N3!x7J7A
h.init(data); 7D@O:yO
for(int i=0;i h.remove(); >Ke4lO"
System.arraycopy(h.queue,1,data,0,data.length); :{E;*v_!v
} *[) b}?
J/:9;{R
private static class MaxHeap{ f-E]!\Pg
:-fCyF)EI
void init(int[] data){ w[S2
]<
this.queue=new int[data.length+1]; k id3@
for(int i=0;i queue[++size]=data; N2 wBH+3w
fixUp(size); "M3R}<Vt
} uosFpa
} D'$ki[{,
vSb$gl5H
private int size=0; !iN=py
d OQU#5
private int[] queue; w4\b^iJz
f R$E*Jd
public int get() { /. k4Y
return queue[1]; d3v5^5kU
} %AwR 4"M
suC]
public void remove() { _VLc1svv
SortUtil.swap(queue,1,size--); )$p<BL U
fixDown(1); MDZ,a0?4t
} &^=6W3RD
file://fixdown E:a_f!
private void fixDown(int k) { ,_,Z<X/
int j; T>7$<ulm
while ((j = k << 1) <= size) { \DI%/(?
if (j < size %26amp;%26amp; queue[j] j++; <7NY.zvwk]
if (queue[k]>queue[j]) file://不用交换 ae`*0wbv
break; :P1 J> dcG
SortUtil.swap(queue,j,k); _z4c7_H3
k = j; ^oDC F
}
yr9%,wwN
} d~M;@<eD
private void fixUp(int k) { M0YV Qa
while (k > 1) { 4D=p#KZ
int j = k >> 1; gXBC=
?jl
if (queue[j]>queue[k]) ;7Cb!v1
break; [xe(FFl+
SortUtil.swap(queue,j,k); g
<S&sYF5
k = j; Q(=} PF
} h;?=:(
} rtd&WkU
rD
b+bgGLo
} 3WZdP[o!
ZV=O oLt,
} \ bNN]=
xfZ.
SortUtil: 9y "R,
O~sv^
package org.rut.util.algorithm; ?:73O`sX:
iOXxxP%#
import org.rut.util.algorithm.support.BubbleSort; *{5p/}p
import org.rut.util.algorithm.support.HeapSort; i P gewjx
import org.rut.util.algorithm.support.ImprovedMergeSort; yxP(|
import org.rut.util.algorithm.support.ImprovedQuickSort; n]c6nX:'
import org.rut.util.algorithm.support.InsertSort; |)`<D
import org.rut.util.algorithm.support.MergeSort; MHar9)$}
import org.rut.util.algorithm.support.QuickSort; \Jq$!foYx
import org.rut.util.algorithm.support.SelectionSort; ^x8*]Sz#x
import org.rut.util.algorithm.support.ShellSort; "& h;\hL
lJ1_Zs `
/** ZZ|a`U
* @author treeroot E:'TZ4Z
* @since 2006-2-2 /qM:;:N%j
* @version 1.0 N.R,[K
*/ ?"-%>y@w
public class SortUtil { L@xag-b
i
public final static int INSERT = 1; ^oaFnzJdf
public final static int BUBBLE = 2; 4&]Sb}
public final static int SELECTION = 3; `L n,qiA
public final static int SHELL = 4; .;nU"
a3'
public final static int QUICK = 5; T:k-`t0":N
public final static int IMPROVED_QUICK = 6; /<ODP6Yy;
public final static int MERGE = 7; 3Run.Gv\
public final static int IMPROVED_MERGE = 8; V/xGk9L~
public final static int HEAP = 9; 0*G
=~:
6?GR+;/
public static void sort(int[] data) { UolsF-U}'
sort(data, IMPROVED_QUICK); b'F#Y9
} R{={7.As+
private static String[] name={ %N``EnF2
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" /BeA-\B
}; ?5@!r>i=<
euO!vLd X
private static Sort[] impl=new Sort[]{ ^U1@
hq*u
new InsertSort(), D2<(V,h9
new BubbleSort(), #2AKO/
new SelectionSort(), -CePtq`
new ShellSort(), .&Tcds
new QuickSort(),
J" :R,w`
new ImprovedQuickSort(), ;;|S
QX
new MergeSort(), phk fPvL{
new ImprovedMergeSort(), Am>^{qh9
new HeapSort() E&js`24 &
}; @q8h'@sX
nKxu8YAJe
public static String toString(int algorithm){ YKCd:^u
return name[algorithm-1]; m][i-|@M
} o!bIaeEaU
]nmVT~lBe"
public static void sort(int[] data, int algorithm) { KYe@2 6
impl[algorithm-1].sort(data); G!Gbg3:4e5
} Zw4z`x1f
/O@TqH
public static interface Sort { G_m$W3 zS
public void sort(int[] data); V!^5#A<
} :<Z>?x
:`U@b
6
public static void swap(int[] data, int i, int j) { {|:ro!&
int temp = data; @ ={Hx$zL
data = data[j]; 6d%V=1^F
data[j] = temp; Eu;f~ V
} Tw`n 3y?
} G%Dhj)2}