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。 fSd|6iFH
插入排序: =SmU;t>t/
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package org.rut.util.algorithm.support; ahgP"Qz
<k8WnA ~Fl
import org.rut.util.algorithm.SortUtil; T+T)~!{%
/** F1BvDplQ>G
* @author treeroot ]d(Z%
* @since 2006-2-2 Vq0X:<9
* @version 1.0 F_:Wu,dUZ
*/ N<SW
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public class InsertSort implements SortUtil.Sort{ =XQGg`8<LB
HYO/]\al
/* (non-Javadoc) .X3n9]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =_=%1rI~
*/ v\bWQs1
public void sort(int[] data) { axmq/8X
int temp; l4T[x|')M
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1v:Ql\^cT
} 4I&(>9 @z<
} YSxr(\~j
} j.6!T'$|
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} mg:kVS
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冒泡排序: #m{(aa9;
C+t3a@&|
package org.rut.util.algorithm.support; zf)*W#+
4r_*: $g
import org.rut.util.algorithm.SortUtil;
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/** -cU bIbW
* @author treeroot *2/qm:gB
* @since 2006-2-2 HdlOGa6C
* @version 1.0 G0h&0e{w
*/ hwUb(pZ
public class BubbleSort implements SortUtil.Sort{ ,k_ b-/
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/* (non-Javadoc) e}5x6t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wM[Z 0*K
*/ 7R[7M%H
public void sort(int[] data) { JtSwbdN
int temp; =LIb0TZ2
for(int i=0;i for(int j=data.length-1;j>i;j--){ A?04,l]y
if(data[j] SortUtil.swap(data,j,j-1); v(Kj6 '
} - s'W^(
} Q'jGNWep
} eXsp0!v
} E8PwA.
*MfH\X379
} 'wFhfZB1!B
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选择排序: ]6^S:K_"
4xT /8>v2|
package org.rut.util.algorithm.support; #\N8E-d
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import org.rut.util.algorithm.SortUtil; 1O,5bi>t7
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/** v B~VJKD
* @author treeroot !oi
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* @since 2006-2-2 0?t;3z$n
* @version 1.0 ye(av&Hn
*/ ~pH!.|k-&
public class SelectionSort implements SortUtil.Sort { sa<\nH$_X
;~r- P$kCY
/* }s?w-u+(c6
* (non-Javadoc) #s(ob `0|
* n|WSnm,W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o3Yb2Nw
*/ eu)""l
public void sort(int[] data) { H(Wiy@cJn
int temp; kLF3s#k
for (int i = 0; i < data.length; i++) { X!6dg.n5
int lowIndex = i; /m>SEo\{C
for (int j = data.length - 1; j > i; j--) { 8[,R4@
if (data[j] < data[lowIndex]) { vv)O+xt
lowIndex = j; P//nYPyzg
} \2~\c#-k
} (bsywM
SortUtil.swap(data,i,lowIndex); yz,_\{}
} '`gnJX
JO
} ^-Arfm%dn
#a@ jt
} 8cvSA&l(D
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Shell排序: @N[<<k7g
P()n=&XO6
package org.rut.util.algorithm.support; L$"x*2[A
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import org.rut.util.algorithm.SortUtil; BZTj>yd
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/** p;7wH\c
* @author treeroot L~h:>I+pG
* @since 2006-2-2 7s%1?$B
* @version 1.0 0n4( Rj|}2
*/ =n=!s{A:t
public class ShellSort implements SortUtil.Sort{ )gU:Up24|"
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/* (non-Javadoc) SJc*Rl>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3NZK$d=4
*/ %*<Wf4P"
public void sort(int[] data) { [giw(4m#y
for(int i=data.length/2;i>2;i/=2){ "WmsBdO
for(int j=0;j insertSort(data,j,i); '-~J.8-</
} =B+dhZ+#S$
} Z= -fL
insertSort(data,0,1); ]!1HN3
} OU/3U(%n]e
-;8 a* F
/** OhaoLmA}6
* @param data opn6 C )
* @param j wNl6a9#
* @param i "g"%7jK
*/ /_expSPHl
private void insertSort(int[] data, int start, int inc) { !.iFU+?V
int temp; #68$'Rl"o1
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); bM_fuy55Op
} mW[w4J+7P
} IcqzMmb
} Q;y4yJ$wI
U4Y)Jk
} %< ;u
JP K
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快速排序: 1)~9Eku6K
n/BoK6g
package org.rut.util.algorithm.support; .MDSP/s
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import org.rut.util.algorithm.SortUtil; Zs0;92WL
1PWi~1q{Q
/** 3AP=
* @author treeroot qKeR}&b
* @since 2006-2-2 D>U(&n
* @version 1.0 DuAix)#FN9
*/ pnuwjU-
public class QuickSort implements SortUtil.Sort{ d'Dd66
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/* (non-Javadoc) P A*U\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xf8e" mD
*/ ,0nrSJED
public void sort(int[] data) { 6r%i=z
quickSort(data,0,data.length-1); 3*7 klu
} c":2<:D&
private void quickSort(int[] data,int i,int j){ .W;cz8te
int pivotIndex=(i+j)/2; RZqMpW
file://swap Xa"I
SortUtil.swap(data,pivotIndex,j); )VG>6x
_~>WAm<
int k=partition(data,i-1,j,data[j]); nnu#rtvZp}
SortUtil.swap(data,k,j); 6&LmR75C
if((k-i)>1) quickSort(data,i,k-1); XdlA)0S)
if((j-k)>1) quickSort(data,k+1,j); +g1+,?cU
>#T?]5Z'MF
} F$|d#ny
/** 8OS^3JS3"
* @param data _\@zq*E
* @param i !xg10N}I
* @param j wLfH/J
* @return !w!k0z]
*/ S;#7B?j
private int partition(int[] data, int l, int r,int pivot) { !-SI &qy
do{ ?caHS2%?ae
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Kxh WZ3
SortUtil.swap(data,l,r); UpQda`rb
} g^=Ruh+
while(l SortUtil.swap(data,l,r); Ya<V@qd
return l; PF)s>
} 7''iT{-[p
wYS r.T8Q
} BG4TUt
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改进后的快速排序: vy-(:aH7U
R:^jQ'1
package org.rut.util.algorithm.support; }U}ppq0Eo
BOdlz#&s
import org.rut.util.algorithm.SortUtil; WkpHe
NP!LBB)=Y
/** bVZAf
* @author treeroot Az?^4 1r8
* @since 2006-2-2 VS~+W=5}
* @version 1.0 d,'gh4C
*/ 4]
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public class ImprovedQuickSort implements SortUtil.Sort { x],XiSyp
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private static int MAX_STACK_SIZE=4096; 80gOh:
private static int THRESHOLD=10; r#}o
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/* (non-Javadoc) =
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u<Ch]m+
*/ _3g!_
public void sort(int[] data) { "-IF_Hid
int[] stack=new int[MAX_STACK_SIZE]; 7#N= GN
64'sJc.
int top=-1; ][ 8`}ki 1
int pivot; p gv, Su
int pivotIndex,l,r; {?cF2K#
x'Nc}
stack[++top]=0; Z;dR:|%)
stack[++top]=data.length-1; 0d0ga^O
%bG\
while(top>0){ ']^]z".H
int j=stack[top--]; ?ZhBS3L
int i=stack[top--]; TOvsW<cM
`Xi)';p
pivotIndex=(i+j)/2; bXM&VW?OP
pivot=data[pivotIndex]; \ZSq ZDq
:"i2`y;u
SortUtil.swap(data,pivotIndex,j); ( pCU:'"
^7:UC\_
file://partition (2RuQgO
l=i-1; B\ZCJaMb
r=j; NXS$w{^
do{ B" ]a8}u
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); P+e {,~o
SortUtil.swap(data,l,r); )2jH&}K
} wr>6Go%
while(l SortUtil.swap(data,l,r); ?cK67|%W
SortUtil.swap(data,l,j); x.I?)x!C'
ij}{H#0S-
if((l-i)>THRESHOLD){ {"N:2
stack[++top]=i; 'RQEktm
stack[++top]=l-1; &EC8{.7
} u&f|z9
if((j-l)>THRESHOLD){ S[l z>I
stack[++top]=l+1; XE;'K`%
stack[++top]=j; -_Z
} $P #KL//
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} ]4FAbY2'h
file://new InsertSort().sort(data); |uM=pm;H
insertSort(data); #~r+Z[(,p
} F}B2nL&
/** @cG+D
* @param data *oh,Va
*/ >v1.Gm
private void insertSort(int[] data) { M pz9}[`3g
int temp; ZpwFC7LW
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); g/i.b&
} {3Dm/u%=9|
} ')WS :\J
} 2UBAk')O}
n(Um/
} sr<\fW
lI9|"^n7F
归并排序: ZV-Yq !|t
7VLn$q]:
package org.rut.util.algorithm.support; +Q :)zE
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import org.rut.util.algorithm.SortUtil; '^'PdB
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/** gU@R
* @author treeroot Iqj?wI1)
* @since 2006-2-2 LZJFp@
* @version 1.0 <yw=+hz[u
*/ H<*n5r(c
public class MergeSort implements SortUtil.Sort{ 5VGZ5,+<<
7e)j|a-!<
/* (non-Javadoc) j}G9+GX~,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "DecS:\
*/ \`*]}48Z
public void sort(int[] data) { - C8VDjf9
int[] temp=new int[data.length]; Pf3F)y [=
mergeSort(data,temp,0,data.length-1); "2"2qZ*h}
} 8&7zV:=
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private void mergeSort(int[] data,int[] temp,int l,int r){ @[TSJi
int mid=(l+r)/2; !]8QOn7 =
if(l==r) return ; P
qa;fiJ)
mergeSort(data,temp,l,mid); Rf{YASPIw&
mergeSort(data,temp,mid+1,r); 8;3I:z&muQ
for(int i=l;i<=r;i++){ h,MaF<~
temp=data; &sJ6k/l
} ?:7$c
int i1=l; OHH\sA
int i2=mid+1; Ma ]*Pled
for(int cur=l;cur<=r;cur++){ YgQb(umK
if(i1==mid+1) y@ c[S;
data[cur]=temp[i2++]; {@ tO9pc`8
else if(i2>r) t+Qx-sW
data[cur]=temp[i1++]; ;"NW=P&
else if(temp[i1] data[cur]=temp[i1++]; * YLpC^&
else d(, M
data[cur]=temp[i2++]; cfc=a
}
ypTH=]y
} hz-^9U
U@LIw6B!KL
} }l5Q0'
87R$Y> V
改进后的归并排序: {w v{"*Q9Q
i~{ 0>"9
package org.rut.util.algorithm.support; ERfSJ
-Y>QKS
import org.rut.util.algorithm.SortUtil; ;jmT5XzL
#*"I?B/fd8
/** 8HWEObRY
* @author treeroot f Qf5%
* @since 2006-2-2 3AcDW6x|
* @version 1.0 Et;Ubj"+
*/ j__l'?s
public class ImprovedMergeSort implements SortUtil.Sort { [-nPHmZV[
G;J!3A;TE
private static final int THRESHOLD = 10; kM76?M
@CA{uP;
/* ]QF*\2b-I2
* (non-Javadoc) VB=jKMi
* 8y]{I^z}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Lv-M.
*/ ~W_T3@
public void sort(int[] data) { Tqx
int[] temp=new int[data.length]; <,&t}7M/:
mergeSort(data,temp,0,data.length-1); 2bOFH6g
} d.y-R#F_]
YcM0A~<
private void mergeSort(int[] data, int[] temp, int l, int r) { m3`J9f,c/
int i, j, k; 9#\oGzDN
int mid = (l + r) / 2; ~@D{&7@
if (l == r) i MF-TR
return; z+j3j2
if ((mid - l) >= THRESHOLD) 7C~g?1
mergeSort(data, temp, l, mid); $T*g@]
else 8HDI]
insertSort(data, l, mid - l + 1); is{H >#+"
if ((r - mid) > THRESHOLD) YF)c.Q0
mergeSort(data, temp, mid + 1, r); oox;8d4}y
else ezhK[/E=
insertSort(data, mid + 1, r - mid); }t1J`+x%
Qt=OiKZ
for (i = l; i <= mid; i++) { Ka8Bed3
temp = data; 9gETWz(3I
} A3Vj3em
for (j = 1; j <= r - mid; j++) {
^{64b
temp[r - j + 1] = data[j + mid]; gzp]hh@4
} GAlM:>
int a = temp[l]; @[O|n)7
int b = temp[r]; P2
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for (i = l, j = r, k = l; k <= r; k++) { `M ~-(,++
if (a < b) { KK/siG~O
data[k] = temp[i++]; 2Jt*s$
a = temp; 0G8zFe*p
} else { H|<Zm:.%$
data[k] = temp[j--]; @zig{b 8
b = temp[j]; >8gb/?z
} Q\z9\mMG-
} F?4&qbdD
} i5czm?x
UQJ
/** nOU.=N
v`
* @param data @5cY5e*i{
* @param l fh9w5hT={
* @param i k}e~xbh-y
*/ #6 M3BF
private void insertSort(int[] data, int start, int len) { cTdX'5
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); t0)XdIl8
} 6FEIQ#`{
} xDn#=%~+x
} uiaZ@
} P:m6:F@hO
N[sJ5oF
堆排序: dU|&- .rG
#9q
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package org.rut.util.algorithm.support; ] U.*KkQ
p ^ )iC&*0
import org.rut.util.algorithm.SortUtil; DP!~WkU~
2h`Tn{&1/
/** --F6n/>
* @author treeroot ZP"Xn/L
* @since 2006-2-2 qyR}|<F8*
* @version 1.0 J|DY
/v
*/ _k Utj(re
public class HeapSort implements SortUtil.Sort{ t:tIzFNv
nRheByYm
/* (non-Javadoc) vFi+ExBU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fD2)/5j1
*/ T!t9`I0Zz
public void sort(int[] data) { '~AR|8q?
MaxHeap h=new MaxHeap(); tIo
b
h.init(data); ^8
cq
qu
for(int i=0;i h.remove(); ulNMqz\.
System.arraycopy(h.queue,1,data,0,data.length); J,t`ilT
} Lwkl*
SF[}suL
private static class MaxHeap{ :[ll$5E.
J{PNB{v
void init(int[] data){ fmv,)UP
this.queue=new int[data.length+1]; =8Gpov1!V~
for(int i=0;i queue[++size]=data; c6MMI]+8
fixUp(size); WL}XD
Kx
} x]~&4fp
} =v=u+nO
T}Ve:S
private int size=0; HD>UTX`&mc
>yqFO
private int[] queue; I"HA(
+G
X>U _v
public int get() { 0G(|`xG1q
return queue[1]; *fQn!2}=(
} +RyV"&v
a[NR%Xq
public void remove() { z#/"5 l
SortUtil.swap(queue,1,size--); 3?<LWrhV3
fixDown(1); k;l^y%tzp
} LMI7Ih;
file://fixdown 5GDg_9Bz
private void fixDown(int k) { 8Bx58$xRq
int j; b-YmS=*
while ((j = k << 1) <= size) { gm7 [m}
if (j < size %26amp;%26amp; queue[j] j++; $dF$-y<[0
if (queue[k]>queue[j]) file://不用交换 Z~ u3{
break; fY!9i5@'
SortUtil.swap(queue,j,k); nt*K@
k = j; `a9iq>
} il$eO 7
} |P7FPmn
private void fixUp(int k) { %;b] k
while (k > 1) {
wnHfjF
int j = k >> 1; aA'of>'ib|
if (queue[j]>queue[k]) ;e6-*
break; __`6 W1
SortUtil.swap(queue,j,k); S%df'bh$
k = j; deCi\n
} EAK[2?CY
} !k!1h%7q
Koc5~qUY]
} Dfy=$:Q
jt3=<&*Bm
} _3q}K
Zhc99 L&K
SortUtil: K<MWiB&
=LKf.@]#
package org.rut.util.algorithm; >FqU=Q
B{>x
import org.rut.util.algorithm.support.BubbleSort; 4++p K;I
import org.rut.util.algorithm.support.HeapSort; =-/sB>-C
import org.rut.util.algorithm.support.ImprovedMergeSort; ;3+_aoY
import org.rut.util.algorithm.support.ImprovedQuickSort; hp}JKj@
import org.rut.util.algorithm.support.InsertSort; -!IeP]n#P
import org.rut.util.algorithm.support.MergeSort; t)4]2z)$
import org.rut.util.algorithm.support.QuickSort; =A(Az
import org.rut.util.algorithm.support.SelectionSort; 3e)$ <e
import org.rut.util.algorithm.support.ShellSort; {2U3
)oy+-1dE
/** b fI= =
* @author treeroot >{>X.I~
* @since 2006-2-2 SZ~lCdWad
* @version 1.0 ;KT/;I
*/ )C0d*T0i
public class SortUtil { J>1%*Tz
public final static int INSERT = 1; O"J"H2}S
public final static int BUBBLE = 2; ^ LVKXr
public final static int SELECTION = 3; XC4wm#R
public final static int SHELL = 4; huvn_
public final static int QUICK = 5; rTim1<IXR
public final static int IMPROVED_QUICK = 6; H{1'- wB
public final static int MERGE = 7; _}tPtHPa/
public final static int IMPROVED_MERGE = 8; B(Er/\-@U
public final static int HEAP = 9; HJt
'@t=Ak
,>Dpt<
public static void sort(int[] data) { }H|'W[Q.
sort(data, IMPROVED_QUICK); F12$BKDH
} |qpFR)l
private static String[] name={ .TNGiUzG
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ?nZe.z-%6
}; WG
+]
~bz$] o-<
private static Sort[] impl=new Sort[]{ 9K-,#a
new InsertSort(), uobQS!
new BubbleSort(), vb3hDy
new SelectionSort(), 8WC_CAP
new ShellSort(), svtqX-Vj"
new QuickSort(), ?%$~Bb _
new ImprovedQuickSort(), yYdh+ x
new MergeSort(), d
'\^S}
new ImprovedMergeSort(), 0 gR_1~3
new HeapSort() S}qGf%
}; v
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15d'/f
public static String toString(int algorithm){ -K/c~'%'*
return name[algorithm-1]; f6 s .xQ
} 9U Hh#
hx ^ l
public static void sort(int[] data, int algorithm) { 0bOT&Z^
impl[algorithm-1].sort(data); ua,!kyS
} #44}Snz
QwL*A `@
public static interface Sort { 25<qo{
public void sort(int[] data); $GYy[8{:V
} z>)lp$
X$_pDF&\z
public static void swap(int[] data, int i, int j) { S3&n?\CO:
int temp = data; FsS.9
`B
data = data[j]; U65oh8x
data[j] = temp; V!NRBXg
} wLNkXC
} OxUc,%e9P