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。 2zKo
插入排序: B3dA%\'
[.j]V-61
package org.rut.util.algorithm.support; #PslrA.
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import org.rut.util.algorithm.SortUtil; FL`1yD^2
/** uKbHFF
* @author treeroot b
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* @since 2006-2-2 j&dx[4|m:h
* @version 1.0 vS$oT]-hKE
*/ *
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public class InsertSort implements SortUtil.Sort{ dY/u<4
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/* (non-Javadoc) 4e+BqCriC*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w53z*l>ek
*/ }F{C= l2
public void sort(int[] data) { 6Q2orn[
int temp; ,2,SG/BB
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Jh$"f r3
} F)/~p&H
} 1Y=AT!"V
} ', sQ/#S
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} -@SOo"P
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冒泡排序: 'h^-t^:<>b
7|QGY7Tf
package org.rut.util.algorithm.support; 5#0A`QO
j|[(*i%7|
import org.rut.util.algorithm.SortUtil; {_zV5V
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/** S<eZ d./p6
* @author treeroot }XCR+uAz
* @since 2006-2-2 S5~`T7Ra
* @version 1.0 ,!6M*|
*/ vuR5}/Ev
public class BubbleSort implements SortUtil.Sort{ MSZ!W(7,<
jCTy:q]
/* (non-Javadoc) As@ihB+(\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b/sOfQ
*/ Ecxj9h,S
public void sort(int[] data) { F0&~ ?2nG
int temp; )L |tn
for(int i=0;i for(int j=data.length-1;j>i;j--){ bZ>&QM
if(data[j] SortUtil.swap(data,j,j-1); YH[XRUa
} H]_WFiW-9
} Nush`?]J"_
} cQT1Xi
} >`7OcjLg
ytjK++(T5
} H\^VqNK"
k> b&xM!
选择排序: -3.UE^W2
61/)l0<;
package org.rut.util.algorithm.support; h/I@_?k+
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import org.rut.util.algorithm.SortUtil; ;>9OgO
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/** ~ J0,)_b%*
* @author treeroot 99^AT*ByY
* @since 2006-2-2 2)wAFO6u
* @version 1.0 w`L~#yu
*/ W|ReLM\
public class SelectionSort implements SortUtil.Sort { pC*BA<?Rg
^ED"rMI
/* dh&W;zs
* (non-Javadoc) 2m_'z
* Ovvny$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `Kh]x9Z
*/ %_R$K#T^,
public void sort(int[] data) { *(k%MTG
int temp; y7/PDB\he
for (int i = 0; i < data.length; i++) {
jip\4{'N
int lowIndex = i; f
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for (int j = data.length - 1; j > i; j--) { 7}Bj|]b)~
if (data[j] < data[lowIndex]) { }>V/H]B
lowIndex = j; ^:qD .h>&
} NMXnrvS&
} (cvh3',
SortUtil.swap(data,i,lowIndex); ^J8uhV;w
} 6m9 7_NRO
} #2 \8?UPd
/xcJo g~F,
} QhsMd-v
9C_*3?6
Shell排序: eGLO!DdxZ
U,PZMz`2j
package org.rut.util.algorithm.support; 'WK;$XQ
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import org.rut.util.algorithm.SortUtil; [s~JceUyX
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/** q( IZJGb
* @author treeroot m}98bw
* @since 2006-2-2
rFo\+//
* @version 1.0 4E2yH6l
*/ ejVdxVr \7
public class ShellSort implements SortUtil.Sort{ a mqOxb
{>@QJlE0
/* (non-Javadoc) || [89G
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }'%^jt[3
*/ SSE3tcRRl
public void sort(int[] data) { pprejUR
for(int i=data.length/2;i>2;i/=2){ EY kj@
.,
for(int j=0;j insertSort(data,j,i); wf?u(3/%
} .(|+oHg<
} BDy5J2<<7l
insertSort(data,0,1); tQrS3Hz'nA
} B/mYoK
/|GT\X4o
/** F;u7A]H^
* @param data F?z<xL@
* @param j s2%V4yy%
* @param i |zq4* 5
*/ Bz+.Qa+
private void insertSort(int[] data, int start, int inc) { 0#QKVZq2>
int temp;
9RQU?
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); i'HPRY
} vt.P*Z5
} Q"%S~'
} qe$33f*
j$Nf%V 6Y
} O~ 27/
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快速排序: 9~c~E/4!
1AF%-<`?s
package org.rut.util.algorithm.support; >SoO4i8
6PU/{c
import org.rut.util.algorithm.SortUtil; D+sQP ymI
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/** |O-`5_z$r
* @author treeroot ZqQ*}l5
* @since 2006-2-2 hGI+:Js6
* @version 1.0 Q".g.k
*/ 7X}TB\N1
public class QuickSort implements SortUtil.Sort{ BX[~%iE
xvmt.> f
/* (non-Javadoc) H\E7o"m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %X>FVlPm
*/ gO='A(Y
public void sort(int[] data) { ]tB@kBi "
quickSort(data,0,data.length-1); U\jb"
} #op:/j
private void quickSort(int[] data,int i,int j){ fN)x#?
int pivotIndex=(i+j)/2; o@W_ai_
file://swap {~N3D4n^
SortUtil.swap(data,pivotIndex,j); %<}<'V0
fW(/Loh
int k=partition(data,i-1,j,data[j]); *KJB>W%@uM
SortUtil.swap(data,k,j); ]78!!G[`
if((k-i)>1) quickSort(data,i,k-1); r|GY]9
if((j-k)>1) quickSort(data,k+1,j); W;zpt|kAH
zrRFn `B
} *}cSE|S%
/** #f{lC0~vA
* @param data 0C$8g
Y*
* @param i 0(y:$
* @param j T#EFXHPr
* @return #y1Bx,
*/ L0Y0&;y|R
private int partition(int[] data, int l, int r,int pivot) { l%~lz[
do{ @g-G
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); sI,W%I':d
SortUtil.swap(data,l,r); PcC/_+2
} ,%[4j9#!_
while(l SortUtil.swap(data,l,r); _c2WqQ-05
return l; `G!M>h@
} JoZ(_Jh%m
*fnvZw?
} D!F 2l_
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改进后的快速排序: SV.z>p
q0&$7GH4
package org.rut.util.algorithm.support; UKtSm%\
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import org.rut.util.algorithm.SortUtil; `Ye8
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HYCuK48F[_
/** qMP1k7uG)
* @author treeroot G.\l qYrXU
* @since 2006-2-2 Kqg!,Sn|
* @version 1.0 6na^]t~ncm
*/ TL0[@rr4
public class ImprovedQuickSort implements SortUtil.Sort { ?9mkRd}c
(R*j|HAw`X
private static int MAX_STACK_SIZE=4096; 8'#/LA[uPe
private static int THRESHOLD=10; jlqv2V7=/
/* (non-Javadoc) .cDOl_z<:G
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g/~XCC^F?
*/ W)*p2#l
public void sort(int[] data) { 5~H#(d<oZ
int[] stack=new int[MAX_STACK_SIZE]; MS3=~*+
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int top=-1; ?o*I9[Z)
int pivot; +f|BiW
int pivotIndex,l,r; a.2L*>p
@1-F^G%p8
stack[++top]=0; z6*<V5<7
stack[++top]=data.length-1; 3jZ6kfj
Y32 "N[yw
while(top>0){ !H@0MQ7
int j=stack[top--]; 7Nzbz3
int i=stack[top--]; 5/MKzoB
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pivotIndex=(i+j)/2; @7oL#-
pivot=data[pivotIndex]; ;# uZhd
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SortUtil.swap(data,pivotIndex,j); W-efv
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file://partition V~@^`Gd
l=i-1; XH}'w9VynR
r=j; "Gb1K9A
im
do{ oczG|_
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); TZR)C P5
SortUtil.swap(data,l,r); 5=|hC3h
} v'!a\b`9
while(l SortUtil.swap(data,l,r); J aTp}#
SortUtil.swap(data,l,j); V[o`\|<
_Q[$CcDEE
if((l-i)>THRESHOLD){ v59dh (:`Z
stack[++top]=i; Jg}K.1Hs
stack[++top]=l-1; {X(:jAy
} gKYfQ+
if((j-l)>THRESHOLD){ ~Wo)?q8UY,
stack[++top]=l+1; xG&)1sT#-\
stack[++top]=j; jRSUp
E8
} %w7u]-tR
{(U %i\F\
} YG[;"QR
file://new InsertSort().sort(data); ojvj}ln
insertSort(data); #S&Tkip]"W
} +LM#n#T
/** |KSy`lY-j>
* @param data 3 @ak<9&
*/ s7Ub@
private void insertSort(int[] data) { S}p4iE"n
int temp; = C4
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); x8S7oO7
} b2b^1{@h;v
} Tq]Sn]CSP
} a}%#*J)!
R"
;xvo*
} 3;S,3
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归并排序: B2-V@06
28 8XF9B^
package org.rut.util.algorithm.support; ,Ax dCT
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import org.rut.util.algorithm.SortUtil; =c/wplv*
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/** E_vq
* @author treeroot 1P~X8=9h
* @since 2006-2-2 +=O5YR!{
* @version 1.0 ?VP8ycm
*/ gbH<]?
public class MergeSort implements SortUtil.Sort{ 0q&<bV:D
=EHUR'
/* (non-Javadoc) W[Ls|<Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N<~t3/Nm
*/ Ney/[3 A
public void sort(int[] data) { 8C*c{(4
int[] temp=new int[data.length]; 3AU;>D ^5
mergeSort(data,temp,0,data.length-1); Kx>qz.wwI?
} Pi]19boM.
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private void mergeSort(int[] data,int[] temp,int l,int r){ _f$^%?^
int mid=(l+r)/2; a!=D [Gz*5
if(l==r) return ; BO;6
u^[
mergeSort(data,temp,l,mid); \ExMk<y_&
mergeSort(data,temp,mid+1,r); r"P|dlV-
for(int i=l;i<=r;i++){ KET2Ws[w
temp=data; r>o63Q:
} D)L+7N0D~
int i1=l; DGS $Ukz&T
int i2=mid+1; \WxukYH
for(int cur=l;cur<=r;cur++){ 6}d.5^7lr
if(i1==mid+1) o,_?^'@
data[cur]=temp[i2++]; n*2UnKaJ
else if(i2>r) JpXlBEio%
data[cur]=temp[i1++]; hDF@'G8F
else if(temp[i1] data[cur]=temp[i1++]; MF5[lK9e
else wB.&}p9p
data[cur]=temp[i2++]; 0yD9SJn
} k?+?v?I
=
} .yz}ROmN^
E=nIRG|g
} vSEuk}pk
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改进后的归并排序: As'=tIro
YNQY4\(
package org.rut.util.algorithm.support; <0Xf9a8>
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import org.rut.util.algorithm.SortUtil; ?8'*,bK
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/** .+$Q<L
* @author treeroot 'Gj3:-xqL
* @since 2006-2-2 9Z4nAc
* @version 1.0 M/b Sud?@%
*/ a<^ v(r
public class ImprovedMergeSort implements SortUtil.Sort { ~E17L]ete
6 (]Dh;gC
private static final int THRESHOLD = 10; _852H$H\
p {T*k'
/* y3@H/U{
* (non-Javadoc) s~^5kgPA
* ;r<^a6B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F1*>y
*/ ItNz}4o|d
public void sort(int[] data) { d3\qKL!~
int[] temp=new int[data.length]; p M4 :#%V
mergeSort(data,temp,0,data.length-1); Mk"^?%PxT
} H?yK~bGQ
MTuV^0%jD
private void mergeSort(int[] data, int[] temp, int l, int r) { -|$@-fY;
int i, j, k; bCRV\myd`
int mid = (l + r) / 2; ,E S0NA
if (l == r) C5o#i*|
return; Y]'Z7<U}*E
if ((mid - l) >= THRESHOLD) Va"0>KX
mergeSort(data, temp, l, mid); <^#,_o,!
else ;U/&I3dzV
insertSort(data, l, mid - l + 1); ag [ZW
if ((r - mid) > THRESHOLD)
akp-zn&je
mergeSort(data, temp, mid + 1, r); =$'6(aDH
else f6hnTbJ
insertSort(data, mid + 1, r - mid); I|qo+u)
)_HA>o_?C:
for (i = l; i <= mid; i++) { &."iFe
temp = data; -r`.#c4
} u^^[Q2LDU}
for (j = 1; j <= r - mid; j++) { 5_GYrR2
temp[r - j + 1] = data[j + mid]; M\uiq38
} +%<(E
int a = temp[l]; W+I!q:p4H
int b = temp[r]; /:m->
T
for (i = l, j = r, k = l; k <= r; k++) { em%4Ap
if (a < b) { Ni9/}bb
data[k] = temp[i++]; <? q?Mn
a = temp; *#,7d"6W5
} else { n(1l}TJy
data[k] = temp[j--]; @LF,O}[2J
b = temp[j]; R0KPZv-
} ?gA 8x
} )|ju~qbf
} P)Jgs
` Fa~
/** $*^7iT4q_t
* @param data f\|w'
* @param l V'z1
* @param i i1 }:8Unxf
*/ G|bT9f$
private void insertSort(int[] data, int start, int len) { f z'@_4hg
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); LBw1g<&
} ^pp\bVh2Q]
} I ce~oz)
} ^9v4O UG
} l!D}3jD
~[t[y~Hup
堆排序: zfJT,h-{
b6,iZ+]
package org.rut.util.algorithm.support; Z@4Arfl
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import org.rut.util.algorithm.SortUtil; 5AFJC?
k
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/** 4>wP7`/+y
* @author treeroot R$R *'l
* @since 2006-2-2 !z\h|wU+
* @version 1.0 \1k79 c
*/ Hus)c3Ty7
public class HeapSort implements SortUtil.Sort{ '{cIAw/"n
E^B'4
/* (non-Javadoc) L^1NY3=$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R)c?`:iUB
*/ A#e%^{q$
public void sort(int[] data) { LQ@"Xe]5
MaxHeap h=new MaxHeap(); ;YaQB#GK%
h.init(data); 6fkRrD
for(int i=0;i h.remove(); 0CHH)Bku
System.arraycopy(h.queue,1,data,0,data.length); 5?f ^Rz
} Akq2 d;
NDN7[7E
private static class MaxHeap{ nGC/R&
^}RCoE
void init(int[] data){ %Hu5K>ZNYp
this.queue=new int[data.length+1]; VF+KR*
for(int i=0;i queue[++size]=data; Sj3+l7S?
fixUp(size); p?02C#p
} 2R[:]-b
} aS>u,=C
K%t*8
4j
private int size=0; Kew@&j~
j`EXlc~
private int[] queue; ))qy;Q,
C"y(5U)d
public int get() { dn&s*
return queue[1]; #NQMy:JHD)
} .j ?W>F
!Z1@}`V&;
public void remove() { 0j^Kgx
SortUtil.swap(queue,1,size--); B`EJb71^Xy
fixDown(1); l5~os>
} d9k0F
OR1
file://fixdown zrvF]|1UP
private void fixDown(int k) { )~X2
&^orW
int j; "fb[23g%@k
while ((j = k << 1) <= size) { Q-(zwAaE
if (j < size %26amp;%26amp; queue[j] j++; ~]sc^[
if (queue[k]>queue[j]) file://不用交换 irZ])a
break; 49eD1h3'X[
SortUtil.swap(queue,j,k); |44Ploz2b
k = j; M$wC=b
} R7%#U`Q^A
} +V2F#fI/
private void fixUp(int k) { \UA[
while (k > 1) { (|2t#'m
int j = k >> 1; ."g`3tVK
if (queue[j]>queue[k]) B.=FSow
break; .7J#_*NV
SortUtil.swap(queue,j,k); RTYvS5G
k = j; <3nMx^
} )Om*@;r(
} ~-k9%v`
jVi) Efy
} td$E/h=3
IYv`IS"
} x5pdS:
_T60;ZI+^
SortUtil: 'B|JAi?
?d* z8w
package org.rut.util.algorithm; @@f"%2ZR[
GC-5X`Sq
import org.rut.util.algorithm.support.BubbleSort; .e#w)K
import org.rut.util.algorithm.support.HeapSort; x[p|G5
import org.rut.util.algorithm.support.ImprovedMergeSort; KR}?H#%
import org.rut.util.algorithm.support.ImprovedQuickSort; 9+|$$)
import org.rut.util.algorithm.support.InsertSort; Cp\6W[2+B
import org.rut.util.algorithm.support.MergeSort; poE0{HOU
import org.rut.util.algorithm.support.QuickSort; ~g91Pr
import org.rut.util.algorithm.support.SelectionSort; #<fRE"v:Q
import org.rut.util.algorithm.support.ShellSort; i$Ul(?
cZ,b?I"Q%
/** wLIMv3;k
* @author treeroot soxc0OlN
* @since 2006-2-2 yxPazz
* @version 1.0 2Ah#<k-gC;
*/ 9
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public class SortUtil { RHW]Z
Pr<
public final static int INSERT = 1; AI2)g1m
public final static int BUBBLE = 2; <sbu;dQ`
public final static int SELECTION = 3; )$2QZ
qX
public final static int SHELL = 4; hgG9m[?K
public final static int QUICK = 5; M-VX;/&FR
public final static int IMPROVED_QUICK = 6; "nynl'Ryk
public final static int MERGE = 7; 2k~l$p>CN!
public final static int IMPROVED_MERGE = 8; sI=xl
public final static int HEAP = 9; AYBns]!
[jQp~&nY
public static void sort(int[] data) { &u."A3(
sort(data, IMPROVED_QUICK); `7E;VL^Y1
} T=DbBy0-
private static String[] name={ ^dWa;m]l
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" jVe1b1rt~3
}; bL`TySX
LENq_@$
private static Sort[] impl=new Sort[]{ bIDj[-CDG
new InsertSort(), K-)]
1BG
new BubbleSort(), M)Z7k/=<P
new SelectionSort(), ;fTKfa
new ShellSort(), HQdxL*N%^
new QuickSort(), FjHv
new ImprovedQuickSort(),
z_$% -6
new MergeSort(), BKCiIfkZ
new ImprovedMergeSort(), 5Pc;5
o0C
new HeapSort() au(D66VO
}; r8?gD&