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。 P{gGvC,
插入排序: g,YJh(|#{
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package org.rut.util.algorithm.support; oRALhaI
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import org.rut.util.algorithm.SortUtil; yPmo@aw]1
/** - Mubq
* @author treeroot 5j{jbo=!
* @since 2006-2-2 r2xXS&9!|
* @version 1.0 C-:lM1
*/ HO`N]AMw
public class InsertSort implements SortUtil.Sort{ #J):N
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l
/* (non-Javadoc) en?J#fz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c?/R=/H
*/ |n/qJIE6
public void sort(int[] data) { !%lcn
O
int temp; oLh2:c
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _[:>!ekx
} "gQ-{ W
} ]E:K8E
} 3$yOv"`
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} fp)%Cr
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冒泡排序: +5k^-
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cb
package org.rut.util.algorithm.support; VUF$,F9
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import org.rut.util.algorithm.SortUtil; 4[P]+Z5b+
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/** tEbR/?,GI
* @author treeroot MJ..' $>TC
* @since 2006-2-2 )zK6>-KWA
* @version 1.0 CBrC
*/ A7c*qBt
public class BubbleSort implements SortUtil.Sort{ <5t2 +D]]}
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/* (non-Javadoc) u;/5@ADW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <,:5d2mM.
*/ NE1n 9
public void sort(int[] data) { %vZTD+i
int temp; 9()d7Y#d/`
for(int i=0;i for(int j=data.length-1;j>i;j--){ GLpl
if(data[j] SortUtil.swap(data,j,j-1); x[dR5
} +k<0:Fi
} Zai:?%^
} Gp.XTz#=
} x,rK4L7U
Q&k1' nT5
} -L6YLe%w
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选择排序: D_D76
y~'h/tjM@=
package org.rut.util.algorithm.support; \YZ7
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import org.rut.util.algorithm.SortUtil; 5?=haGn
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/** Gtm|aR{OS
* @author treeroot %={[e`,
* @since 2006-2-2 {n'+P3\T:
* @version 1.0 .gP}/dj
*/ )&F]j
public class SelectionSort implements SortUtil.Sort { HVLj(_
A
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/*
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* (non-Javadoc) 3X>x`
*
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,"xr^@W
*/ \|f3\4;!
public void sort(int[] data) { ,l )7]p*X
int temp; (l_/ HQ32
for (int i = 0; i < data.length; i++) { [zsUboCkc
int lowIndex = i; dZ6P)R
for (int j = data.length - 1; j > i; j--) { 6Qw5_V^0o
if (data[j] < data[lowIndex]) { Py^fWQ5I~%
lowIndex = j; +v{g'
} TRJ5m?x
} "IuHSjP
SortUtil.swap(data,i,lowIndex); &WV&_z
} /y-eVu6
} fP>~ @^
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} vP @\"
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Shell排序: $sS;#r0
sL",Ho
package org.rut.util.algorithm.support; 1{Kv
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t
import org.rut.util.algorithm.SortUtil; WXmR{za
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/** @ i*It Hk
* @author treeroot pW,)yo4
* @since 2006-2-2 k,h
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* @version 1.0 jnzOTS
*/ QJ^'Uyfdn
public class ShellSort implements SortUtil.Sort{ my+2@ln
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/* (non-Javadoc) ZFFKv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k"$E|$
*/ W&Xm_T[Q
public void sort(int[] data) { IZSJ+KO
for(int i=data.length/2;i>2;i/=2){ <nk7vo?Ks
for(int j=0;j insertSort(data,j,i); 3`+Bq+
} N% !TFQf
} CY</v,\:#
insertSort(data,0,1); ,~nrNkhp
} vhE^jS<Tg
u5O`|I@R
/** S9kA69O
* @param data <.knM
* @param j A V]7l}-
* @param i 4T??8J-J
*/ LM2S%._cj;
private void insertSort(int[] data, int start, int inc) { `P
* wz<
int temp; es!>u{8)
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); X6-;vnlKN
}
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} bB+ 4
} TJ_pMU
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} p6AF16*f0
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快速排序: 4r tNvf5`
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package org.rut.util.algorithm.support; KJYcP72P
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import org.rut.util.algorithm.SortUtil; t$EL3U/(
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/** (b#4Z
* @author treeroot ]9lR:V
sw
* @since 2006-2-2 H#:Aby-d}
* @version 1.0 e pGC
Ta
*/ IcJQC
public class QuickSort implements SortUtil.Sort{ PdqyNn=
ZE:!>VXa87
/* (non-Javadoc) vJ9IDc|[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /I48jO^2
*/ =Y
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public void sort(int[] data) { _@@.VmZL
quickSort(data,0,data.length-1); sIzy/W0iV
} 7fXta|eP0
private void quickSort(int[] data,int i,int j){ {v,NNKQ4x
int pivotIndex=(i+j)/2; bR'UhPs-8;
file://swap 3XSfXS{lwP
SortUtil.swap(data,pivotIndex,j); Y|nC_7&Bv
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int k=partition(data,i-1,j,data[j]); +[2ep"5H
SortUtil.swap(data,k,j); 3,^.
if((k-i)>1) quickSort(data,i,k-1); ESmWK;7b
if((j-k)>1) quickSort(data,k+1,j); KXT9Wt=
ni?5h5-
} C17$qdV/
/** RMs+pN<5
* @param data Ny5$IIFe
* @param i %V|n2/O
Y
* @param j /2>.*H_2
* @return cq"#[y$r
*/ ~s2la~gu
private int partition(int[] data, int l, int r,int pivot) { BFswqp:
do{ a)QSq<2*
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 8 -YC#&
SortUtil.swap(data,l,r); !rTkH4!_
} ZtGtJV"H
while(l SortUtil.swap(data,l,r); Vb,'VN%
return l; jK\AVjn
} XsGc!o
iI Dun Ih
} ,FL*Z9wA
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改进后的快速排序: y`\rb<AZ*t
j1O_Az|3
package org.rut.util.algorithm.support; "0aJE1)p:
wY=k$
import org.rut.util.algorithm.SortUtil; r!;wKO
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/** k!py*noy
* @author treeroot >4&0j'z"
* @since 2006-2-2 KsQn %mxS
* @version 1.0 M
\UB
r4
*/ o&MOcy D
public class ImprovedQuickSort implements SortUtil.Sort { *nSKIDw
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private static int MAX_STACK_SIZE=4096; W!V-m
private static int THRESHOLD=10; IG90mpLX
/* (non-Javadoc) 9`td_qh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9`tSg!YOh
*/ |#ZMZmo{
public void sort(int[] data) { 'x<o{Hi"\B
int[] stack=new int[MAX_STACK_SIZE]; >e!Y 63`
.'bhRQY
int top=-1; IL{tm0$r
int pivot; +-NH
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int pivotIndex,l,r; Hm'aD2k
yJW/yt.l
stack[++top]=0; uj@d {AQ
stack[++top]=data.length-1; K(#O@Wmjq
]OV}yD2p
while(top>0){ M{g.x4M@W
int j=stack[top--]; 20/P:;
int i=stack[top--]; H'}6Mw%ra
U+,RP$r@
pivotIndex=(i+j)/2; ,olP}
pivot=data[pivotIndex]; [ d`m)MW-
-I[K IeF
SortUtil.swap(data,pivotIndex,j); NUFW
SL>
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file://partition Z8`Y}#Za [
l=i-1; uM,R +)3
r=j; ]GBlads
do{ 4"veq rC
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 9V|)3GF
SortUtil.swap(data,l,r); @H$Sv
} PR7B
Cxm
while(l SortUtil.swap(data,l,r); sh*/wM
SortUtil.swap(data,l,j); x(A8FtG
r@EHn[w
if((l-i)>THRESHOLD){ x/ix%!8J
stack[++top]=i; +K?sg;
stack[++top]=l-1; wz>[CXpi_
} B+z>$6
if((j-l)>THRESHOLD){ m qwJya
stack[++top]=l+1; P=.~LZZ]89
stack[++top]=j; LfN,aW
} VniU:A
mrBK{@n
} e~geBlLar
file://new InsertSort().sort(data); j/;wxKW
insertSort(data); ]f>0P3O5&
} EHK+qrym
/** :LCyxLI
* @param data 0i>p1/kv
*/ ~ ReX$9
private void insertSort(int[] data) { ]3~u @6
int temp; Y
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); J-qUJX~4c
} tIS.,CEQF
} [I}z\3Z
%
} *T~b
ox
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} e*Y<m\*
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归并排序: H5*#=It
10xza=a
package org.rut.util.algorithm.support; a(LtiO
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import org.rut.util.algorithm.SortUtil; M 5$JB nN
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/** i,t!17M:
* @author treeroot Ns]$+|
* @since 2006-2-2 frc9
* @version 1.0 v3{%U1>}v
*/ \VWgF)_
public class MergeSort implements SortUtil.Sort{ \/b[V3<"
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/* (non-Javadoc) Bg}l$?S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BkP4.XRI
*/ n6G&c4g<"
public void sort(int[] data) { 2@IL
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int[] temp=new int[data.length]; Ze <)B
*
mergeSort(data,temp,0,data.length-1); 8Ltl32JSB[
} Yr>0Qg],
[SD
mdr1T$
private void mergeSort(int[] data,int[] temp,int l,int r){ hM[3l1o{|
int mid=(l+r)/2; q]Kv.x]$R
if(l==r) return ; bGkLa/?S
mergeSort(data,temp,l,mid); w|Ry)[
mergeSort(data,temp,mid+1,r); f8ZuG !U
for(int i=l;i<=r;i++){ 5~ZzQG
temp=data; qOIVuzi*
} ;NE4G;px4<
int i1=l; `"hWbmQ
int i2=mid+1; 3Yo)K
for(int cur=l;cur<=r;cur++){ 5 D=r7
if(i1==mid+1) PpH
;p.-!d
data[cur]=temp[i2++]; {rK]Q! yj
else if(i2>r) EM`'=<)V
data[cur]=temp[i1++]; LzDRy L
else if(temp[i1] data[cur]=temp[i1++]; "$D'gSoYe
else 'Lw8l `7
data[cur]=temp[i2++]; mn\A)RQ
} Gpi_p
} ,Xr`tQ<@
9tb-;|
} bZr,jLEf
)FPn_p#3]
改进后的归并排序: q`?M+c*F
6}VFob#h8
package org.rut.util.algorithm.support; e=aU9v
L
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import org.rut.util.algorithm.SortUtil; aqWlX0+
Djdd|Z+*{
/** g*`xEb='
* @author treeroot O /:FY1
* @since 2006-2-2 \w"~DuA
* @version 1.0 &n#yxv4
*/ BO7XN;
public class ImprovedMergeSort implements SortUtil.Sort { Z}t^i^u
0Lb{HLT
private static final int THRESHOLD = 10; t&NpC;>v
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/* :H&G}T(#
* (non-Javadoc) ~mwIr
* ~<~
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \ q3ui}-9
*/ t\a|Gp W
public void sort(int[] data) { n>7aZ1Qa
int[] temp=new int[data.length]; H?!DcUg CC
mergeSort(data,temp,0,data.length-1); CJ7S5
} gFrNk
Uqp
>]&Ow9-
private void mergeSort(int[] data, int[] temp, int l, int r) { u~2]$ /U
int i, j, k; k{=dV
int mid = (l + r) / 2; +S[3HX7H
if (l == r) Lis>Qr
return; 13w(Tf
if ((mid - l) >= THRESHOLD) 4T;<`{]
mergeSort(data, temp, l, mid); $d!Vx m
else M] +.xo+A
insertSort(data, l, mid - l + 1); bM5o-U#^ C
if ((r - mid) > THRESHOLD) (xoYYO
mergeSort(data, temp, mid + 1, r); uubIL+
else 17,mqXX>
insertSort(data, mid + 1, r - mid); FvG?%IFM
aWH
for (i = l; i <= mid; i++) { ;E[Q/
tr:w
temp = data; V"'PA-z3
} pPag@L
for (j = 1; j <= r - mid; j++) { gu%i|-}
temp[r - j + 1] = data[j + mid]; k3nvML,bv
} <P'FqQ]
int a = temp[l]; 'TuaP`]<
int b = temp[r]; !c{F{t-a
for (i = l, j = r, k = l; k <= r; k++) { $IjI{%
if (a < b) { U8y?S]}vo
data[k] = temp[i++]; )J0h\ky
a = temp; Cl!(F6K*
} else { %?aq1 =B
data[k] = temp[j--]; 2H0BNrYM
b = temp[j]; <<E9MIn_
} EU>`$M&w-
} !lo
/L
} al-rgh
NdSuOkwwt
/** y Vm>Pj6
* @param data X{Hh^H
* @param l XZM@Rys
* @param i ;gSRpTS:
*/ EApbaS}Up
private void insertSort(int[] data, int start, int len) { 5ya^k{`+ZO
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); vp.?$(L^@/
} {V[}#Mf
} J|DZi2o
} -W<1BJE
} Gyy4zK
EwU)(UK
堆排序: k.K#i /t
P\<:.8@$S
package org.rut.util.algorithm.support; I[v`)T'_{
W]7/
e
import org.rut.util.algorithm.SortUtil; .-/IV^lGv
c.b| RM0;
/** **kix
* @author treeroot >:> W=
* @since 2006-2-2 FKz5,PeL
* @version 1.0 wT6zeEV~*
*/ rF"p7
public class HeapSort implements SortUtil.Sort{ uOJqj{k_."
Iv*\8?07)
/* (non-Javadoc) FVBAB>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {\%I;2X
*/ XD|g G
public void sort(int[] data) { x: _[R{B
MaxHeap h=new MaxHeap(); k4dC
h.init(data); B(94; ,(
for(int i=0;i h.remove(); z F.@rXl
System.arraycopy(h.queue,1,data,0,data.length); {GLGDEb
} ujSoWs
n=C"pH#
private static class MaxHeap{ m,!SDCq
fFqYRK
void init(int[] data){ @sA!o[gH
this.queue=new int[data.length+1]; A;RV~!xx
for(int i=0;i queue[++size]=data; ^bfZd
fixUp(size); Z[d13G;
} 'ScvteQ
} L
1!V'Hm{
e@anX^M;
private int size=0;
w:QO@
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private int[] queue; ^Y%_{
,!^5w,P:
public int get() { KNd<8{'.
return queue[1]; )Hmf=eoc
} /*,_\ ;
ktx| c19
public void remove() { D_0Vu/v
SortUtil.swap(queue,1,size--); j]<K%lwp
fixDown(1); B 5|\<CF
} }UB@FRPF
file://fixdown S#y[_C?H
private void fixDown(int k) { HNv~ZAzBG-
int j; Cd"{7<OyM4
while ((j = k << 1) <= size) { wN4#j}C
if (j < size %26amp;%26amp; queue[j] j++; ]lBCK
if (queue[k]>queue[j]) file://不用交换 dp'[I:X
break; ceJi|`F
SortUtil.swap(queue,j,k); ?X6}+
k = j; ]4en|Aq
} 4,c6VCw3+
} Z%B6J>;u M
private void fixUp(int k) { X(*O$B{
R
while (k > 1) { bNVeL$'
int j = k >> 1; w,FPL&{
if (queue[j]>queue[k]) HdI)Z<Krp
break; 9%iQ~
SortUtil.swap(queue,j,k); N\ !
k = j; *Z_4bR4Q
} D\-\U
E/
} o#,^7ln
yvoz 3_!
} 8Ejb/W_
*1<kYrB
} iI";m0Ny
Gw$ 5<%sB
SortUtil: dM^Z,;u
#Ir?v
package org.rut.util.algorithm; 0O>ClE~P
R8Vf6]s_
import org.rut.util.algorithm.support.BubbleSort; Q'jw=w!|g
import org.rut.util.algorithm.support.HeapSort; ikV;]ox
import org.rut.util.algorithm.support.ImprovedMergeSort; mL48L57Z
import org.rut.util.algorithm.support.ImprovedQuickSort; Q}L?o
import org.rut.util.algorithm.support.InsertSort; ^.!jD+=I
import org.rut.util.algorithm.support.MergeSort; hyf
;f7`o
import org.rut.util.algorithm.support.QuickSort; 71{jedT
import org.rut.util.algorithm.support.SelectionSort; A+0-pF2D
import org.rut.util.algorithm.support.ShellSort; }QE*-GVv]
u/u(Z&
/** c Pf_B=
* @author treeroot #6<1
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* @since 2006-2-2 OpEH4X.Z
* @version 1.0 F. SB_S<'
*/ j/d}B_2
public class SortUtil { K8_v5
public final static int INSERT = 1; HT .*r6Y>g
public final static int BUBBLE = 2; yQN{)rv
public final static int SELECTION = 3; ^D$|$=|DH
public final static int SHELL = 4; 6_bL<:xtY
public final static int QUICK = 5; =zcvR {Dkp
public final static int IMPROVED_QUICK = 6; CC`_e^~y=F
public final static int MERGE = 7; \toU zTT
public final static int IMPROVED_MERGE = 8; $3g{9)}
public final static int HEAP = 9; g=56|G7n
i#`q<+/q
public static void sort(int[] data) { \H@1VgmR;
sort(data, IMPROVED_QUICK); c_D(%Vf5
} sjg`4^!wDD
private static String[] name={ SscB&{f
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Km8aHc]O~
}; =\WF +r]V
0\= du
private static Sort[] impl=new Sort[]{ Tn#Co$<
new InsertSort(), p2i?)+z
new BubbleSort(), yQD>7%x
new SelectionSort(), SXm%X(JU
new ShellSort(), RDp
new QuickSort(), (O5Yd 6u
new ImprovedQuickSort(), *{DTxEy
new MergeSort(), ZP<<cyY
new ImprovedMergeSort(), ^!&6=rb
new HeapSort() eMJ>gXA]
}; Zp9.
~&4o-
EJ9hgE
public static String toString(int algorithm){ a4__1N^Qj
return name[algorithm-1]; U\Wo&giP[
} tbd=A]B-
00QJ596
public static void sort(int[] data, int algorithm) { KkA)p/
impl[algorithm-1].sort(data); |h\7Q1,1~2
} -Lh7!d
3N2dV6u
public static interface Sort { ;/j2(O^
public void sort(int[] data); >CqzC8JF
} E[]5Od5#
No'?8 +i
public static void swap(int[] data, int i, int j) { ecghY=%
int temp = data; {_O!mI*
data = data[j]; o eUi
data[j] = temp; go uU
} >%j%Mj@8q|
} >1Z"5F7=