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。 Z_[ P7P
插入排序: -L+kt_>
~m_{&,CA.
package org.rut.util.algorithm.support; `;Ho<26
yts@cd`$
import org.rut.util.algorithm.SortUtil; C$q};7b1N
/** 3~{I/ft
* @author treeroot XLC9B3Jt
* @since 2006-2-2 )9^)t
* @version 1.0 Z#.1p'3qm1
*/ Mgr?D
public class InsertSort implements SortUtil.Sort{ "\i H/
U0t|i'Hx
/* (non-Javadoc) d(|q&b:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q8_(P&
*/ ynv{
rMl
public void sort(int[] data) { 3m= _a
int temp; l]4=W<N
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !NH(EWER
} e8rZP(g&g
} cI P.5)Ca
} /v^'5j1o
EjL]#,QR
} [0EWIdT*b
.u>[m.
冒泡排序: D%~tU70a
7mq&]4-G
package org.rut.util.algorithm.support; .<zKBv
d\uN
import org.rut.util.algorithm.SortUtil; =WjHf8v;
LD ]-IX&L
/**
V1B!5N<
* @author treeroot 5mQ@&E~#W
* @since 2006-2-2 9wZ?")2
* @version 1.0 @4hzNi+
*/ g'KxjjYT,
public class BubbleSort implements SortUtil.Sort{ ] L97k(:Ib
hH 5}%/vF
/* (non-Javadoc) TKM^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %ggf|\-e
*/ P&sWn?q Ol
public void sort(int[] data) { )w0x{_
int temp; sEFQ8S
for(int i=0;i for(int j=data.length-1;j>i;j--){ @QV0l]H0+
if(data[j] SortUtil.swap(data,j,j-1); OL>)SJj5
} H.\`(`6
} T[ZmD{6l
} Rjq Xz6
} ss[`*89
0W(mx-[H/
}
][wb4$2
]R_R`X?
选择排序: rw,Ylr:3
])wdd>'
package org.rut.util.algorithm.support; ^#d\HI
AY{KxCrb^
import org.rut.util.algorithm.SortUtil; *mzi ?3
#h?IoB7
/** q)i %*IY
* @author treeroot HD^#"
* @since 2006-2-2 ?>Sv_0
* @version 1.0 EW|$qLg
*/ ao2^3e
public class SelectionSort implements SortUtil.Sort { }9+;-*m/
uR ?W|a
/* N$6e KJ]
* (non-Javadoc) Yy88 5
* Q]YB.n3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .JPN ';
*/ IplOXD
public void sort(int[] data) { 3Do0?~n
int temp; >x{("``D0y
for (int i = 0; i < data.length; i++) { 2
^m}5:0
int lowIndex = i; 6@s!J8!
for (int j = data.length - 1; j > i; j--) { Z#Mm4(KNh
if (data[j] < data[lowIndex]) { se\f be ^0
lowIndex = j; m,lZy#02s3
} ^1najUpQ_n
} $DoR@2~y
SortUtil.swap(data,i,lowIndex); {1)A"lQu
} w}gmVJ#p
} `G qe]ZE#"
h+}BtKA
} /~Y\KOH|
Z^_qXerjP
Shell排序: !?nbB2,
q#tUDxf(|
package org.rut.util.algorithm.support; 5p (zhfuG
_K o#36.S
import org.rut.util.algorithm.SortUtil; C`hdj/!A
eR$@Q
/** Ipk;Nq
* @author treeroot ,WRm{v0f^
* @since 2006-2-2 U05;qKgkDF
* @version 1.0 &"^F;z/
*/ {Rkd;`Q`!
public class ShellSort implements SortUtil.Sort{ lS4r pbU_
S@/{34,
/* (non-Javadoc) WO_Uc_R
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /W/e%.
*/ eX+36VG\
public void sort(int[] data) { w*-42r3,'
for(int i=data.length/2;i>2;i/=2){ U?UU]>Q
for(int j=0;j insertSort(data,j,i); oX|T&"&
} e9o\qEm
} <y@vv
insertSort(data,0,1); 1Cw]~jh
} }R%H?&P
aUaeK(x:H
/** 6kYluV+j
* @param data X`.##S KC
* @param j {y9G
"
* @param i i"h\*B=
*/ w:t~M[kTW
private void insertSort(int[] data, int start, int inc) { Sc7 Ftb%
int temp; 4j={ 9e<
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); V4[-:k
} 'z ?Hv
} x4WCAqi/2
} z`zz8hK.
geme_
} lU{)%4e`
n 9B5D:.G
快速排序: fpR|+`k
#*o0n>O
package org.rut.util.algorithm.support; QTy=VLk43
rYb5#aT[
import org.rut.util.algorithm.SortUtil; |J-X3`^\H
WC#6(H5t$
/** V&*IZt&
* @author treeroot ,8e'<y
* @since 2006-2-2 `HX:U3/
* @version 1.0 dua F?\vv
*/ %e~xO x
public class QuickSort implements SortUtil.Sort{ {<42PJtPY
d4| )=
/* (non-Javadoc) g-eJan&]N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5W&L6.J}+
*/ j%6p:wDl
public void sort(int[] data) { ]SQ+r*a
quickSort(data,0,data.length-1); fx;rMGa
}
@ap!3o8,9
private void quickSort(int[] data,int i,int j){ dKzG,/1W[m
int pivotIndex=(i+j)/2; @IL04' \
file://swap }J# HIE\RG
SortUtil.swap(data,pivotIndex,j); ]l,D,d81
"t0^4=c+7
int k=partition(data,i-1,j,data[j]); zjmoIE
SortUtil.swap(data,k,j); cYA:k
if((k-i)>1) quickSort(data,i,k-1); e$[O J<t
if((j-k)>1) quickSort(data,k+1,j); ,Y:oTo=~
Fi i(dmn
} wW%b~JX
/** (Ceru o S
* @param data i!a!qE.1
* @param i }j/\OY _&
* @param j Rw?w7?I
* @return )]fsl_Yq
*/ K(+=V)'Dz
private int partition(int[] data, int l, int r,int pivot) { UD-+BUV
do{ L^JU{\C
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); QLJ\>
SortUtil.swap(data,l,r); `=(<!nXJx
} C
m:AU;
while(l SortUtil.swap(data,l,r); Gdow[x
return l; ),x0G*oebj
} }b4 56J
Ca~8cQ
} ,;pUBrz/[
"S;4hO
改进后的快速排序: f)Qln[/
\@@ G\\)er
package org.rut.util.algorithm.support; "yu{b]AU
I):c#
import org.rut.util.algorithm.SortUtil; =Zj
7dn;EN
hk?i0#7W
/** m6i ,xn
* @author treeroot Qsbyy>o)
* @since 2006-2-2 QNbZ)
* @version 1.0 hi(b\ABx
*/ 5iw\F!op:
public class ImprovedQuickSort implements SortUtil.Sort { I'5[8
/nO_e
private static int MAX_STACK_SIZE=4096; Vh0cac|X
private static int THRESHOLD=10; -5*OSA:8x
/* (non-Javadoc) U^_\V BAk
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bc(MN8b ]j
*/ :W)lt28_
public void sort(int[] data) { Zf$mwRS[_
int[] stack=new int[MAX_STACK_SIZE]; :Racu;xf
|>ztx}\
int top=-1; )<QX2~m<
int pivot; ~>@~U]
int pivotIndex,l,r; ew\:&"@2]w
&b (*
stack[++top]=0; k+"];
stack[++top]=data.length-1; v~OMm\
;r@=[h
while(top>0){ ,a>Dv@$Y
int j=stack[top--]; vv)q&,<c
int i=stack[top--]; ;pm/nu
;MQl.?vj
pivotIndex=(i+j)/2; N:B<5l '
pivot=data[pivotIndex]; t^&hG7L_m,
!60U^\
SortUtil.swap(data,pivotIndex,j); ndFVP;q
"M:ui0YP
file://partition 1tY+0R
l=i-1; 6$OmOCA%
r=j; ./I? |ih
do{ u0W6u} 4;
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); #H6YI3
`G
SortUtil.swap(data,l,r); )xVf3l
pQ
} |M?s[}ll
while(l SortUtil.swap(data,l,r); ,=e.QAF!"
SortUtil.swap(data,l,j); N_92,xI#
{`):X _$T
if((l-i)>THRESHOLD){ ^P,Pj z
stack[++top]=i; S/ oD`
stack[++top]=l-1; XVNJK-B
} %vO(.A+
if((j-l)>THRESHOLD){ `\@n&y[`7
stack[++top]=l+1; Lx_Jw\YO
stack[++top]=j; qb;b.P?~D$
} g{Av
=66Z
ASdW!4.p
} =R:O`qdC4e
file://new InsertSort().sort(data); Fug4u?-n
insertSort(data); X0L\Ewm
} uG -+&MU?
/** '9QEG/v
* @param data *SJ[~
*/ B9,39rG/7+
private void insertSort(int[] data) { jwjLxt
int temp; fTpG>*{p
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); jUD^]Qs
} sSh." H
} i=/hLE8T*
} a(~X
@(c^u;
} ;39b.v\^
Hya.OW{
归并排序: |fyzb=Lg
(1cB Tf
package org.rut.util.algorithm.support; " O
r1 fC
h1?xfdvGd
import org.rut.util.algorithm.SortUtil; H*G(`Zl}
}bRn&)e
/** ITl>HlS
* @author treeroot p9jC-&:
* @since 2006-2-2 yT:2*sZRc
* @version 1.0 WZ`i\s1#
*/ ~rb]u
Ny-
public class MergeSort implements SortUtil.Sort{
Qq6'[Od
dG+$!*6Z
/* (non-Javadoc) bLS10^g5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q0q-Coh>
*/ ?Sh"%x
public void sort(int[] data) { )o:sDj`b]
int[] temp=new int[data.length]; 8N)Lck2PR
mergeSort(data,temp,0,data.length-1); \s[L=^!
} K. B\F)K
dfAw\7v/
private void mergeSort(int[] data,int[] temp,int l,int r){ UU(Pg{DA6
int mid=(l+r)/2; db_Qt' >
if(l==r) return ; }Tk:?U{
mergeSort(data,temp,l,mid); W;8A{3q%N0
mergeSort(data,temp,mid+1,r); eaO'|@;{~
for(int i=l;i<=r;i++){ 9_==C"F
temp=data; 1?w=v|b:P)
} !4<D^eh
int i1=l; ^O<v'\!z-
int i2=mid+1; ie[X7$@
for(int cur=l;cur<=r;cur++){ dLGHbeZ[(
if(i1==mid+1) =^p}JhQ
data[cur]=temp[i2++]; ]["%e9#aX
else if(i2>r) {k=3OIp
data[cur]=temp[i1++]; KC&XOI %
else if(temp[i1] data[cur]=temp[i1++]; p*<I_QM!
else 4r83;3WXs
data[cur]=temp[i2++]; /pkN=OBR
} _'mC*7+
} j=U"t\{
EZ>(}
} 0t7)x8c
N"<.v6Z
改进后的归并排序:
E,\)tZ;,
O*/%zr
package org.rut.util.algorithm.support; S]=.p-Am
x0)=jp '
import org.rut.util.algorithm.SortUtil; ZD]{HxGL!
U:99w
/** Y5 ;a
* @author treeroot *.eeiSi{
* @since 2006-2-2 E$z- |-{>
* @version 1.0 f99"~)B|
*/ ez9F!1
public class ImprovedMergeSort implements SortUtil.Sort { Py#EjF12
G:1QXwq\j
private static final int THRESHOLD = 10; ~$>JYJj
ae-tAA[1Y
/* Ohj^Z&j
* (non-Javadoc) b00$3,L
* EdqB4-#7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \:F$7 *Ne
*/ fe<7D\Sp@
public void sort(int[] data) { Y=|20Y\K
int[] temp=new int[data.length]; 2%fzRXhu%
mergeSort(data,temp,0,data.length-1); F,)+9/S&
} [z\baL|
W;T0_=
private void mergeSort(int[] data, int[] temp, int l, int r) { D^h!
].3
T
int i, j, k; ,_H H8[&
int mid = (l + r) / 2; ah<p_qe9|
if (l == r) %m/lPL
return; j;48Yya'
if ((mid - l) >= THRESHOLD) \:s%;s51
mergeSort(data, temp, l, mid); \z6UWZ
else d 4tL
insertSort(data, l, mid - l + 1); !0? B=yA
if ((r - mid) > THRESHOLD) byE0Z vDM
mergeSort(data, temp, mid + 1, r); LH}9&FfjU
else z&n2JpLY7
insertSort(data, mid + 1, r - mid); ;X]B0KFe7
I)#8}[vK
for (i = l; i <= mid; i++) { rSt5@f?
temp = data; 'hWA&Xx+
} m;4ti9
for (j = 1; j <= r - mid; j++) { ceJ#>Rj
temp[r - j + 1] = data[j + mid]; "9^b1UH<
} \tvL<U"'
int a = temp[l]; bh5P98s
int b = temp[r]; ZJcX-Z!\
for (i = l, j = r, k = l; k <= r; k++) { (
./MFf
if (a < b) { f?^-JZ
data[k] = temp[i++]; dZIbajs'
a = temp; r?Mf3U^G
} else { PfU\.[l$
data[k] = temp[j--]; ks phO-
b = temp[j]; :qqG%RB
} nu+^D$ait
} 3rFku"zT$
} w^zqYGxG)
zJ(DO>,p&
/** "
wT?$E
* @param data xv2c8g~vD
* @param l ^/}4M'[ w
* @param i ;{H Dz$
*/ 0U/[hG"DKN
private void insertSort(int[] data, int start, int len) { KyT=:f
V
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Q5dqn"?
} P-[})Z=
} !pRu?5
} oL R/\Y(
} NTX0vQG
kl~/tbf
堆排序: yU/?4/G!
9 4H')(
package org.rut.util.algorithm.support; $Yu'B_E6p
gloG_*W
import org.rut.util.algorithm.SortUtil; |uz<)
<Qv/#
k
/** \reVA$M[
* @author treeroot tboQn~&4
* @since 2006-2-2 '{~[e**
* @version 1.0 q,#s m'S
*/ G Wa6FX:/
public class HeapSort implements SortUtil.Sort{ uUx7>algF
>G"fMOOkW
/* (non-Javadoc) IQC[ewk
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S-\wX.`R1
*/ FsO-xG"@"
public void sort(int[] data) { \WnTpl>B
MaxHeap h=new MaxHeap(); F-o?tU
h.init(data); k kD#Bb
for(int i=0;i h.remove(); C[%&;\3S@
System.arraycopy(h.queue,1,data,0,data.length); Sn'!Nq>
} 6y
Muj<L
q$yg^:]2
private static class MaxHeap{ CDtL.a\
V D7^wd9
void init(int[] data){ 4?@#w>(
this.queue=new int[data.length+1]; |[5;dt_U/
for(int i=0;i queue[++size]=data; A9SL|9Q
fixUp(size); n2-+.9cY
} ami>Pp
} OW=3t#"7Kp
g8'8"9:xC
private int size=0; "]p&7
`{K-eHlrM9
private int[] queue; b@4UR<
!D{z. KO
public int get() { }m?Ut|
return queue[1]; =ZU!i0
K
} W\Sc ak>
a]P%Y.?r
public void remove() { <4;,
y*"n
SortUtil.swap(queue,1,size--); bp?TO]LH
fixDown(1); KK>jV
} W!.FnM5x
file://fixdown }oG6XI9
private void fixDown(int k) { JBw2#ry
int j; uA
=%EEZ
while ((j = k << 1) <= size) { +?3RC$jyw
if (j < size %26amp;%26amp; queue[j] j++; L3Y2HZ
if (queue[k]>queue[j]) file://不用交换 C^'r>0
break; /<[_V/g[t?
SortUtil.swap(queue,j,k); ZHeue_~x4
k = j; [3S17tTc3
} yp=sL' E
} h7K,q S
private void fixUp(int k) { x4g6Qze
while (k > 1) { yyu -y0_
int j = k >> 1; cf>lY
if (queue[j]>queue[k]) By!u*vSev
break; FVP,$
SortUtil.swap(queue,j,k); +&f_k@+
k = j; ,Iz9!i
J"
} Yyd}>+|<,
} !~F oy F
S{2;PaK
} 8'3&z-
u&o4?]6
} 4%qmwt*p
X1oR
SortUtil: ?RG;q
nSSJl
package org.rut.util.algorithm; jZidT9[g
U)-aecB!
import org.rut.util.algorithm.support.BubbleSort; avG#0AY
import org.rut.util.algorithm.support.HeapSort; \,p?pL<'
import org.rut.util.algorithm.support.ImprovedMergeSort; )q4nyT>M
import org.rut.util.algorithm.support.ImprovedQuickSort; >a2[P"
import org.rut.util.algorithm.support.InsertSort; .^F&6'h1H
import org.rut.util.algorithm.support.MergeSort; U{lf$
import org.rut.util.algorithm.support.QuickSort; `aX+Gz?
import org.rut.util.algorithm.support.SelectionSort; DtGkhq;
import org.rut.util.algorithm.support.ShellSort; W2$rC5|
BIx*(
/** 8,+T[S
* @author treeroot |mWSS'7fI
* @since 2006-2-2 j+AZ!$E
* @version 1.0 k)F!gV#
*/ r/ATZAgHP
public class SortUtil { "
@""
public final static int INSERT = 1; q\!"FDOl4
public final static int BUBBLE = 2; vFLE%z{\o
public final static int SELECTION = 3; #LR6wEk
public final static int SHELL = 4; .*YOyK3H
public final static int QUICK = 5; h \`(
public final static int IMPROVED_QUICK = 6; oui0:Vy<
public final static int MERGE = 7; UBQtD|m\
public final static int IMPROVED_MERGE = 8; MMaS
public final static int HEAP = 9; Ux"
^3D
c"`HKfL
public static void sort(int[] data) { MxGQM>
sort(data, IMPROVED_QUICK); a>8]+@
} d^IX(y*$
private static String[] name={ v\!Cq+lFML
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Edh9=sxL
}; {nA+-=T
~KGE(o4p
private static Sort[] impl=new Sort[]{ T=V{3v@zs
new InsertSort(), $[cB6
new BubbleSort(), UDcr5u eKn
new SelectionSort(), IWN18aaL?
new ShellSort(), Gk58VODo
new QuickSort(), VOATza`
new ImprovedQuickSort(), ]NWcd~"b!Z
new MergeSort(), KU+u.J
new ImprovedMergeSort(), l&] %APL
new HeapSort() MB>4Y]rtU
}; +ZE"pA^C
y\iECdPU
public static String toString(int algorithm){ u5U^}<}y}
return name[algorithm-1]; d@Bd*iI<
} \Z%_dT}
Bgsi$2hI
public static void sort(int[] data, int algorithm) { !VG
]~lc
impl[algorithm-1].sort(data); xQ?$H?5B<
} qIzv|Nte
eK3d_bF+
public static interface Sort { 4T)`%Oo<}
public void sort(int[] data); +['1~5
} 8r,0Qic2K
OaN"6Ge#
public static void swap(int[] data, int i, int j) { ^eRbp?H*T
int temp = data; t?weD{O
data = data[j]; B=_5gZ4Y
data[j] = temp; e*D,2>o
} \Z~@/OVc
} Pa|*Jcr