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。 G$zL)R8GE|
插入排序: 2I1uX&g
1k%k`[VC
package org.rut.util.algorithm.support; 0yM[Z':i'{
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import org.rut.util.algorithm.SortUtil; C#;jYBtT7?
/** b#)UUGmI
* @author treeroot abNV4 ,M
* @since 2006-2-2 ppIbjt6r
* @version 1.0 S/ywA9~3Q
*/ 2L_6x<u'
public class InsertSort implements SortUtil.Sort{ <Peebv&v
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/* (non-Javadoc) #%@*p,xh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nwt C:*}
*/ 1_'? JfY-
public void sort(int[] data) { j VgFZ,
int temp; X6+qpp
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); VQI(Vp|
} E`H$YS3o
} XZNY4/25G
} -m=
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m9}AG Rj
} ]j~"mFAP
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冒泡排序: ^I
mP`*X
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package org.rut.util.algorithm.support; `~UZU@/x
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import org.rut.util.algorithm.SortUtil; lOwS&4UT
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/** u}bf-;R
* @author treeroot ow=UtA-^O
* @since 2006-2-2 Si9Z>MR
* @version 1.0 @XD+' {]
*/ 8.=\GV
public class BubbleSort implements SortUtil.Sort{ \,Lo>G`!
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/* (non-Javadoc) >N\0"F7.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &M/0g]4p
*/ !
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public void sort(int[] data) { l=N2lHU
int temp; raVA?|'g~
for(int i=0;i for(int j=data.length-1;j>i;j--){ D0(xNhmKz
if(data[j] SortUtil.swap(data,j,j-1); ;;$# )b
} C${S^v
} ajRSMcKb7i
} %n%xR%|
} PfS:AIy
tj]9~eJ-
} ZlYPoOq
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选择排序: ;Yfv!\^ |
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package org.rut.util.algorithm.support; qjAWeS/
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import org.rut.util.algorithm.SortUtil; [+*$\
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/** BG^C9*ZuP
* @author treeroot R.[Z]-X
* @since 2006-2-2 _{vkX<s
* @version 1.0 `dMqe\o%!
*/ F["wDO
public class SelectionSort implements SortUtil.Sort { SjjIr ^
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/* `u!l3VZ/4
* (non-Javadoc) ,
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* { wF&+kH3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V~ ~=Qp+.
*/ Ogt]_
public void sort(int[] data) { !{n<K:x1
int temp; 6J~12TU,
for (int i = 0; i < data.length; i++) { X1[CX&Am
int lowIndex = i; j#~Jxv%n
for (int j = data.length - 1; j > i; j--) { gw`B "c|
if (data[j] < data[lowIndex]) { ?.c;oS|
lowIndex = j; +#b:d=v!
} `s '#
} c(co\A.]:6
SortUtil.swap(data,i,lowIndex); 5F t5@UF~
} VN0mDh?E
} +(O~]Q-Ez
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} TvNY:m6.%
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Shell排序: dw~p?[
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package org.rut.util.algorithm.support; L{l6Dd43q
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import org.rut.util.algorithm.SortUtil; )2UZ% ?V#
2Nxm@B` {
/** IvpcSam'
* @author treeroot ;Z j]~|
* @since 2006-2-2 ;U:
{/
* @version 1.0 2,vB'CAI
*/ 7:]Pl=:X
public class ShellSort implements SortUtil.Sort{ gx03xPeu
Z=4{Vv*
/* (non-Javadoc) ,y9iKkg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FLoNE>q
*/ /!}'t
public void sort(int[] data) { >U1R.B7f
for(int i=data.length/2;i>2;i/=2){ 2#X4G~>#h
for(int j=0;j insertSort(data,j,i); n\I#CH0V
} "M|P+A
} (qn2xrV
insertSort(data,0,1); ;v17K
} wdzOFDA
k{tMzx]F__
/** I9o6k?$K
* @param data FtufuL?JS
* @param j a"/#+=[
* @param i Y=Z1Tdxa|
*/ ]maYUKqv}'
private void insertSort(int[] data, int start, int inc) { 5#3W5z
int temp; _<$>*i
R
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Z'^U ad6
} ?::NO Dg
} KucV3-I
} VHOfaCE
xRuFuf8
} Mh(]3\
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快速排序: GN#<yv$av
"I;C;}!
package org.rut.util.algorithm.support; o01kYBD
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import org.rut.util.algorithm.SortUtil; c4e_6=Iv
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/** K|C^l;M6
* @author treeroot $@\mpwANl
* @since 2006-2-2 yix'rA -T
* @version 1.0 :"6q,W
*/ Nf+b"&Zh`
public class QuickSort implements SortUtil.Sort{ $d+DDm1o
j9qREf9)
/* (non-Javadoc) f:zFFpP.j@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,3v+PIcMM+
*/ `=#01YX[0
public void sort(int[] data) { Q|}aR:4
quickSort(data,0,data.length-1); |CgnCUv+
} ]U[X1W+@
private void quickSort(int[] data,int i,int j){ JJV0R}z?TV
int pivotIndex=(i+j)/2; o
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file://swap \&V0vN1
SortUtil.swap(data,pivotIndex,j); c~A4gtB=
"HD+rmUEH
int k=partition(data,i-1,j,data[j]);
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SortUtil.swap(data,k,j); "Th$#3
if((k-i)>1) quickSort(data,i,k-1); , xx6$uZ
if((j-k)>1) quickSort(data,k+1,j); d-bqL:/
ZaFb*XRgS
} s"=6{EVqk3
/** 2y0J`!/)
* @param data k)S.]!u&G
* @param i ;;5Uwd'-
* @param j 1ju#9i`.Wg
* @return Kzy/9
*/ ;vhyhP.oM
private int partition(int[] data, int l, int r,int pivot) { A6<C-1
N}j
do{ 5q{h 2).)
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); tC8(XMVx
SortUtil.swap(data,l,r); O^LTD#}$a)
} u{&B^s)k.
while(l SortUtil.swap(data,l,r); =9L$L|W
return l; {-9jm%N
} iK;dU2h
+&tgJ07A
} Q8p&Ki;i
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改进后的快速排序: 78n=nHS
2^~<("+w
package org.rut.util.algorithm.support; fQWIw
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import org.rut.util.algorithm.SortUtil; x+? 9C
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/** vv6$>SU
* @author treeroot [\)oo
* @since 2006-2-2 sKLX [l
* @version 1.0 #gQF'
*/ rh2LGuo4m
public class ImprovedQuickSort implements SortUtil.Sort { 39e;
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private static int MAX_STACK_SIZE=4096; ~:;3uLs,8
private static int THRESHOLD=10; 9L%I<5i
/* (non-Javadoc) MFJE6ei
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |6biq8|$3V
*/ -0o[f53}p
public void sort(int[] data) { c- $Gpa}M
int[] stack=new int[MAX_STACK_SIZE]; n9LGP2#!
/4=-b_2Y~
int top=-1; C`oa3B,z
int pivot; pl*~kG=
int pivotIndex,l,r; rgIrr5
z
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stack[++top]=0; VeiElU3
stack[++top]=data.length-1; &zL#hBE
Zr$d20M2A;
while(top>0){ (%ew604X
int j=stack[top--]; TGT$ >/w >
int i=stack[top--]; @mw "W{
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pivotIndex=(i+j)/2; (lA.3 4.p
pivot=data[pivotIndex]; Q+|{Bs)6i1
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SortUtil.swap(data,pivotIndex,j); Qx|H1_6
h>S[^
-,
file://partition tury<*
l=i-1; iY[+Ywh
r=j; U3;aLQ*
do{ 'iSAAwT2aj
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); oR+-+-??$
SortUtil.swap(data,l,r); }`/gX=91
} TmRxKrRs
while(l SortUtil.swap(data,l,r); fT:}Lj\L1
SortUtil.swap(data,l,j); n[xkSF^)
$BN15x0/:~
if((l-i)>THRESHOLD){ +\`vq"e
stack[++top]=i; a+41|)pt
stack[++top]=l-1; 3{raKM6F
} xc
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if((j-l)>THRESHOLD){ +,'T=Ic{
stack[++top]=l+1; @
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stack[++top]=j; `cP <}^]
} .;/L2Jv
L6:h.1 U$
} qX:B4,|ck
file://new InsertSort().sort(data); ,1n
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insertSort(data); !jX4`/n2
} 2f, B$-#
/** -xmf'c9P
* @param data 4k}e28
*/ MlO-+}`_+
private void insertSort(int[] data) { 4|J[Jdj
int temp; ;~ 4k7Uz
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); SDJH;c0
} Pd=,$UQp
} aA*9,
} l4'~}nn(Y
>}+Q:iNQ)2
} a^nAZ
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归并排序: 8 ,}ikOZ?
#~Q=h`9
package org.rut.util.algorithm.support; Bl.u=I:Y4
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import org.rut.util.algorithm.SortUtil; D=?{8 'R'
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/** +`en{$%%
* @author treeroot wJ"ev.A)
* @since 2006-2-2 }Ag|gF!_
* @version 1.0 AMlV%U#
*/ 1IH[g*f
public class MergeSort implements SortUtil.Sort{ </oY4$ l'
/9ZcM]X B
/* (non-Javadoc) B:oF;~d/,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I@7/jUO
*/ Z_z#QX>=D
public void sort(int[] data) { :Z`4j
int[] temp=new int[data.length]; c,5n,i
mergeSort(data,temp,0,data.length-1); x/TGp?\g
} z MdC
Rph%*~'
private void mergeSort(int[] data,int[] temp,int l,int r){ gy_$#e
int mid=(l+r)/2; _+QwREP
if(l==r) return ; 97~K!'/^+y
mergeSort(data,temp,l,mid); W^g'}}]T
mergeSort(data,temp,mid+1,r); _g|acBF
for(int i=l;i<=r;i++){ a%,fXp>
temp=data; q=c/B(II!
} 4I~i)EKy6
int i1=l; M]_E
int i2=mid+1; D5]{2z}k
for(int cur=l;cur<=r;cur++){ T-L5zu
if(i1==mid+1) d+2daKi
data[cur]=temp[i2++]; !e8i/!}^S
else if(i2>r) ;b~~s.+
data[cur]=temp[i1++]; B!,yfTk]
else if(temp[i1] data[cur]=temp[i1++]; L/r{xS
else vE\lp8j+
data[cur]=temp[i2++]; q(]f]Vl|0
} L'kq>1QWf
} r2eQ{u{nX
mBl7{w;Iv
}
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bkQ3c-C<
改进后的归并排序: mN1Ssq"B
n.$(}A
package org.rut.util.algorithm.support; ijZ>:B2:
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import org.rut.util.algorithm.SortUtil; H~9=&p[Q
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/** =Sxol>?t
* @author treeroot !Tfij(91
* @since 2006-2-2 1kFjas`g
* @version 1.0 [8]m8=n
*/ xPQL?.
public class ImprovedMergeSort implements SortUtil.Sort { R{3CW^1
bEpMaBN
private static final int THRESHOLD = 10; J/Q|uRpmqr
j7/(sf
/* l]5%
* (non-Javadoc) |-kEGLH[*V
* jxY-u+B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ U6{dI@|B
public void sort(int[] data) { 4;<DJ.XlN=
int[] temp=new int[data.length]; +WF.wP?y
mergeSort(data,temp,0,data.length-1); 0=[0|`x
} Y6eEGo"K.+
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private void mergeSort(int[] data, int[] temp, int l, int r) { k&GHu0z
int i, j, k; a!t
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int mid = (l + r) / 2; &'O?es|Lb
if (l == r) nFXAF!,jj
return; epVH.u%
if ((mid - l) >= THRESHOLD) YNM\pX'
mergeSort(data, temp, l, mid); @d)a~[pm
else oh&Y<d0
insertSort(data, l, mid - l + 1); 3?ba
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if ((r - mid) > THRESHOLD) G[6=u|(M
mergeSort(data, temp, mid + 1, r); yX9B97XyC
else < l[`"0
insertSort(data, mid + 1, r - mid); V\zsDP
`^%GN8d}nm
for (i = l; i <= mid; i++) { "6V_/u5M;=
temp = data; hEOJb
@:R
} WEC-<fN|Y\
for (j = 1; j <= r - mid; j++) { ^Kw(&v
temp[r - j + 1] = data[j + mid]; /=M.-MU2
} A?Sm-#n{
int a = temp[l]; faVS2TN4
int b = temp[r]; s^PmnFR
for (i = l, j = r, k = l; k <= r; k++) { Y'_ D<Mp
if (a < b) { g{a d0.y,
data[k] = temp[i++]; {Gkn_h-^
a = temp; &7F&}7*c
} else { \X opU"
data[k] = temp[j--]; lIl9ypikg
b = temp[j]; 7.|S>+Q
} `Kp}s<
} s5.k|!K
} Wf1-"Q
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/** '%Dg{ zL
* @param data ZOHRUm
* @param l yS"0/Rm}
* @param i g
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*/ J~2CD*v
private void insertSort(int[] data, int start, int len) { m){&:Hs
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); }rxFS
<j
} M=Is9)y
} ddMM74
} p;ZDpR
} f[M"EMy
2$Y3[$
堆排序: %0(>!SY
6cZ C
package org.rut.util.algorithm.support; HjPH
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import org.rut.util.algorithm.SortUtil; hGKdGu`0
+}]wLM}\UF
/** @}{VM)Fc+
* @author treeroot I)uASfT$
* @since 2006-2-2 Y;PDZbK3
* @version 1.0 5oa]dco
*/ }'_ :XKLj
public class HeapSort implements SortUtil.Sort{ -(ER4#
h=mv9=x
/* (non-Javadoc) <on)"{W13
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mZ &]
*/ OAyE/Q|
public void sort(int[] data) { ?(M\:`G'
MaxHeap h=new MaxHeap(); [M2Dy{dh
h.init(data); Ua!Odju*w
for(int i=0;i h.remove(); D2-O7e
System.arraycopy(h.queue,1,data,0,data.length); <v-92?
} "lb\c
6!o/~I#
private static class MaxHeap{ h@/>?Va
lZ+/\s,]|
void init(int[] data){ Jz2q\42q
this.queue=new int[data.length+1]; (BhL/A 4
for(int i=0;i queue[++size]=data; Ut=0~x.=<
fixUp(size); M,Po54u
} xKisL=l6Y
} <#!8?o&i
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private int size=0; kfIbgya
JG1LS$p^
private int[] queue; _4A&%>
]n/jJ_[
public int get() { m';|}z'
return queue[1]; JCBnFrP
} 9Z}S]-u/
<C2c"=b
public void remove() { Xek E#?.
SortUtil.swap(queue,1,size--); m./*LXU
fixDown(1); %k~C-+
} (jt*u (C&Y
file://fixdown O/'f$ Zj36
private void fixDown(int k) { Zr~"\llk
int j; fG^7@Jw:G
while ((j = k << 1) <= size) { I[vME"
if (j < size %26amp;%26amp; queue[j] j++; 7jD@Gp`" 3
if (queue[k]>queue[j]) file://不用交换 F\l!A'Q+t
break; ]oo|o1H87
SortUtil.swap(queue,j,k); H==X0
k = j; ook' u}h
} 8Na}Wp;|Gi
} <:H
private void fixUp(int k) { X@G[=Rs
while (k > 1) { ZO]E@?Oav
int j = k >> 1; | H5Ync[s
if (queue[j]>queue[k]) sVNo\
break; $4&8U ~Zs
SortUtil.swap(queue,j,k); J#_\+G i
k = j; &7JEb]1C
} ">rsA&hN-
} XP3QBq
3" 8t)s
} F5Cqv0HV
%YsRm%q
} GWVEIZ
qsQ]M^@>
SortUtil: F\I5fNs@
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package org.rut.util.algorithm; GXGN;,7EV
dICnB:SSB
import org.rut.util.algorithm.support.BubbleSort; :ga 9Db9P
import org.rut.util.algorithm.support.HeapSort; 9iiU,}M`j
import org.rut.util.algorithm.support.ImprovedMergeSort; w?*'vF_2:#
import org.rut.util.algorithm.support.ImprovedQuickSort; 4"rb&$E
import org.rut.util.algorithm.support.InsertSort; 7 B4w.P,B
import org.rut.util.algorithm.support.MergeSort; %!1@aL]pQ
import org.rut.util.algorithm.support.QuickSort; ]M02>=1
import org.rut.util.algorithm.support.SelectionSort; z0FR33-
import org.rut.util.algorithm.support.ShellSort; L2do2_
1ZGQhjcx
/** mJU>f-l
* @author treeroot k|)^!BdO
* @since 2006-2-2 [j]}$fFe
* @version 1.0 U]1>?,Nk'3
*/ N GX-'w
public class SortUtil { b*9m2=6
public final static int INSERT = 1; :C}KI)
public final static int BUBBLE = 2;
~`a#h#
public final static int SELECTION = 3; h/fb<jIP1
public final static int SHELL = 4; $u(M 4(}
public final static int QUICK = 5; hPNQGVv
public final static int IMPROVED_QUICK = 6; _%C_uBLi
public final static int MERGE = 7; :K
a^
public final static int IMPROVED_MERGE = 8; `"-`D!U?$
public final static int HEAP = 9; F='jmiVJ
Lcm~QF7cd
public static void sort(int[] data) { P W0q71
sort(data, IMPROVED_QUICK); w0F:%:/
} Rq~
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private static String[] name={ n:{-Vvt
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 6ba2^3GH
}; W,L>'$#pM
U/v"?pg[
private static Sort[] impl=new Sort[]{ Lk$Je
O
new InsertSort(), S.?\>iH[
new BubbleSort(), |>m# m*{S
new SelectionSort(), !ds"88:5^
new ShellSort(), 1VPfa
new QuickSort(), :d:|7hlNQ
new ImprovedQuickSort(), Y:#kel<
new MergeSort(), ~`W6O>
new ImprovedMergeSort(), 3/#R9J#
new HeapSort() _AsHw
}; kfG 65aa>_
[7ek;d;'t
public static String toString(int algorithm){ >8.v.;`
return name[algorithm-1]; ;8
/+wBnm
} +)''l
`i_L?C7
public static void sort(int[] data, int algorithm) { h<!khWFS
impl[algorithm-1].sort(data); e2_r0I^C
} %$!R] B)
HquB*=^xh
public static interface Sort { n8y ,{|
public void sort(int[] data); R-0_226
} 071 E%u,
NC[GtAPD3
public static void swap(int[] data, int i, int j) { SFXfo1dqH
int temp = data; [f0oB$
data = data[j]; )e <! =S
data[j] = temp; r5fz6"
} :p*ojl|
} dcc%G7w