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。 ,!Wo6{'
插入排序: ?d Jd7+A
S)hDsf.I
package org.rut.util.algorithm.support; Zh8\B)0unn
H9WYt#
import org.rut.util.algorithm.SortUtil; P00G*iY~\
/** :Wbp|:N0
* @author treeroot k|OM?\
* @since 2006-2-2 SPqJ
[F
* @version 1.0 uO4
LD}A
*/ 3eY>LWx
public class InsertSort implements SortUtil.Sort{ 'xS@cFo(
|X@s {?
/* (non-Javadoc) vA6`};|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;Z*rY?v
*/ eg;r38
public void sort(int[] data) { |uy@v6
int temp; n
n F
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6%V:Z
} 0(i3RPIj\
} _i>_S n1"
} `,4yGgD!4
q{h,}[U=
} !SuflGx,q
h;q&B9
冒泡排序: %ddH4Q/p
n[>hJ6
package org.rut.util.algorithm.support; |47t+[b
^p(aZj3k
import org.rut.util.algorithm.SortUtil; QtfL'su:
[pU(z'caS
/** -W!M:8
* @author treeroot
KTYjC\\G
* @since 2006-2-2 L9) gN.#
* @version 1.0 y],opG6
*/ "6C
a{n1hk
public class BubbleSort implements SortUtil.Sort{ q:kGJxfaW
5&%M L
/* (non-Javadoc) d5-Q}D,P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PxYK)n9&
*/ h GA2.{
public void sort(int[] data) { G^{~'TZv%
int temp; T[4xt,[a
for(int i=0;i for(int j=data.length-1;j>i;j--){ (A=PDjP!
if(data[j] SortUtil.swap(data,j,j-1); EY]H*WJJ
} *
1}dk`-
} =x+1A)Q
} YC;@ ^
} \JPMGcL
&&CrF~
} _wXT9`|3
}V]*FCpQ
选择排序: L4^/O29
zwUC
L
package org.rut.util.algorithm.support; yLf9cS6=
!RJ@;S
import org.rut.util.algorithm.SortUtil; ItLR|LO9
l!}gWd,H
/** Kz
b-a$
* @author treeroot ,m*HRUY
* @since 2006-2-2 9+ Mj$
* @version 1.0 MP}-7UA#K
*/ P,ZQ*Ju
public class SelectionSort implements SortUtil.Sort { oaha5aWH
> 3&
/* (}F@0WYT^O
* (non-Javadoc) SN)Czi#7
* }c||$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N5)H(<}
*/ @5&57R3>
public void sort(int[] data) { gK~Z Ch
int temp; n3?P8m$
for (int i = 0; i < data.length; i++) { psvc,V_*
int lowIndex = i; X"3p/!W.4
for (int j = data.length - 1; j > i; j--) { Q}Ah{H0C
if (data[j] < data[lowIndex]) { n7i~^nf>
lowIndex = j; tX%
C5k
} ,eTdQI;
} G[e,7jev
SortUtil.swap(data,i,lowIndex); 8;`B3N7
} lI46
f
} 7kD?xHpe
<VU-ja*(J
} \X6q A-Ht
uxdB}H,
Shell排序: POm;lM$
-J!n 7
package org.rut.util.algorithm.support; S7J.(;
82
D(Z#um8n
import org.rut.util.algorithm.SortUtil; y}FG5'5$13
5M> p%/
/** V}vL[=QFZ(
* @author treeroot /Gnt.%y&
* @since 2006-2-2 {{gd}g
* @version 1.0 k6DJ(.n'%a
*/ IM6n\EZ^
public class ShellSort implements SortUtil.Sort{ f4\F:YT
Q(x=;wf5r
/* (non-Javadoc) ;~
Xjk
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mx1Bk9h%Xe
*/ &:C[
n q
public void sort(int[] data) { L$a{%]I
for(int i=data.length/2;i>2;i/=2){ u`B/ 9-K)y
for(int j=0;j insertSort(data,j,i); c='W{47
} Ib2&L
} m; =S]3P*
insertSort(data,0,1); c>c3qjWY/
} nzxHd7NIZ
!p ~.Y+
/** M`#g>~bI#R
* @param data zxs)o}8icO
* @param j `r&Ui%fk;0
* @param i ~eTp( XG
*/ )w}'kih
private void insertSort(int[] data, int start, int inc) { o4 "HE*
int temp;
1Z_]Ge<a
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); .rg "(I
} O>f*D+A-
} rv)Eg53Q
} \{rhHb\|h
r#j3O}(n
} .0>bnw
W|;`R{<I%
快速排序: _eQ-'")
SANbg&$
package org.rut.util.algorithm.support; MS2/<LD3d
wBI:}N@.
import org.rut.util.algorithm.SortUtil; IN;!s#cl:
UC`sq-n
/** ?3LV$S)U
* @author treeroot uFuH/(}K[
* @since 2006-2-2 Pvv7|AV
* @version 1.0 mGwJ>'+d
*/ `nII@ !
public class QuickSort implements SortUtil.Sort{ K\RMX?YsP
C<QpUJ`k
/* (non-Javadoc) 7!o#pt7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ho#<?rh_
*/ rWJRoGk/
public void sort(int[] data) { yq2AZ@}"
quickSort(data,0,data.length-1); U/HF6=Wot
} @VND}{j
private void quickSort(int[] data,int i,int j){ a~VW?wq
int pivotIndex=(i+j)/2; b*Hk}
!qH
file://swap '&|%^9O/"
SortUtil.swap(data,pivotIndex,j); \(?d2$0m
%"E!E1_Sv
int k=partition(data,i-1,j,data[j]); 1)xj 'n
SortUtil.swap(data,k,j); HWL? doM
if((k-i)>1) quickSort(data,i,k-1); KB\ri&bF
if((j-k)>1) quickSort(data,k+1,j); _=[pW2p
E^w0X,0XlE
} 0ikA@SAq
/** =L"I[
* @param data e=tM=i"
* @param i Z0~,cO8~
* @param j ev7A;;
* @return Nb0T3\3W
*/ RY,L'GtO
private int partition(int[] data, int l, int r,int pivot) { FD8
do{ 't\sXN+1
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); pP\^bjI
SortUtil.swap(data,l,r); ]]u_Mdk
} rJp9ut'FEz
while(l SortUtil.swap(data,l,r); o9{1_7K
return l; s}^W2
} |c$*Fa"A
DM,;W`|6%
} ~2NTXp
!*wd
d8
改进后的快速排序: +,ld;NM{
ye
{y[$#3
package org.rut.util.algorithm.support; H!y-o'Z
MqWM!v-M
import org.rut.util.algorithm.SortUtil; #Guwbg
obX2/
/** ZE/Aj/7Qy
* @author treeroot g1UQ6Oa
* @since 2006-2-2 ? a?]
LIE8
* @version 1.0 0KZsWlD:L
*/ s BuXwa
public class ImprovedQuickSort implements SortUtil.Sort { z.t,qi$;{U
~a>3,v-
private static int MAX_STACK_SIZE=4096; Ac>GF
private static int THRESHOLD=10; +b dnTV6
/* (non-Javadoc) #KL W&A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qm=9!jqC;
*/ >LU !Z
public void sort(int[] data) { xLbF9ASim
int[] stack=new int[MAX_STACK_SIZE]; CS xB)-
MA mjoH
int top=-1; V2 }.X+u&<
int pivot; _2})URU<S
int pivotIndex,l,r; ka8=`cn
>BMtR0
stack[++top]=0; ~c=*Y=)LG
stack[++top]=data.length-1; bOlb
rN~V^k
while(top>0){ ~VF?T~Kr_
int j=stack[top--]; )d5mZE!3
int i=stack[top--]; JkNRXC:
OH5#.${O
pivotIndex=(i+j)/2; !NhVPb,
pivot=data[pivotIndex]; @jr$4pM?
2$ \#BG
SortUtil.swap(data,pivotIndex,j); (>om.FM
Nm0|U.<
file://partition cl'qw##
l=i-1; 0te[i*G
r=j; yA<\?Ps
do{ I]~UOl
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); i:^
8zW
SortUtil.swap(data,l,r); *pGbcBQ
} y(r(q
while(l SortUtil.swap(data,l,r); ~HX'8\5
SortUtil.swap(data,l,j); aFy'6c}
]@msjz'
if((l-i)>THRESHOLD){ ZN`I4Ak
stack[++top]=i; 04E#d.o'
stack[++top]=l-1; e0o)Jo.P
} O FlY"OS[
if((j-l)>THRESHOLD){ }4*~*NoQ
stack[++top]=l+1; e({-.ra
stack[++top]=j; _4t
} k'd=|U;(FV
T!H }^v
} 4V5h1/JPm
file://new InsertSort().sort(data); F)tcQO"G
insertSort(data); 5lm>~J!/^
} qP[jtRIN
/** L8KMMYh[
* @param data ){i
9,u")
*/ u+]8Sq
private void insertSort(int[] data) { &m@DK>
int temp; L q;=UE
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); kAk+Sq^n
} cfW;gFf
} ^pvnUODW[
} ^{+_PWn
?w "zW6U
} Mg{=(No
1&YkRCn0
归并排序: h\OMWJ~
@w[HXb
package org.rut.util.algorithm.support; bjs{_?
V)Y#m/$`
import org.rut.util.algorithm.SortUtil; )m(?U
R-Z)0S'ZR
/** $)M5@KT
* @author treeroot 7brC@+ZD
* @since 2006-2-2 RZ:=';
* @version 1.0 &B ^LaRg
*/ IaR D"oCH
public class MergeSort implements SortUtil.Sort{ nTPq|=C
ywbdV-t/
/* (non-Javadoc) 5+iXOs<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UJQGwTA W
*/ ;XGO@*V5T
public void sort(int[] data) { lyyRyFfQ
int[] temp=new int[data.length]; |`ZW(}~
mergeSort(data,temp,0,data.length-1); kR;Hb3hb
} QpMi+q
Y
5*Y(%I<
private void mergeSort(int[] data,int[] temp,int l,int r){ ,CQg6-[
int mid=(l+r)/2; -|&&lxrwh
if(l==r) return ; hxuc4C\J
mergeSort(data,temp,l,mid); MJI`1*(
mergeSort(data,temp,mid+1,r); :0j_I\L
for(int i=l;i<=r;i++){ rIWQD%Afm
temp=data; m3 W
} 5'[b:YC
int i1=l; #qdfr3
int i2=mid+1; CR'1,
for(int cur=l;cur<=r;cur++){ j
q1|`:
if(i1==mid+1) >Y"Ru#Ju9
data[cur]=temp[i2++]; Dt*/tVF
else if(i2>r) 3 etW4
data[cur]=temp[i1++]; GC^>oF
else if(temp[i1] data[cur]=temp[i1++]; <Is~DjIav
else tx||<8
data[cur]=temp[i2++]; ! $8 e6
} ps3jw*QZ{5
} 8iUj9r_
#Q61c
} 'P3jUc)
z[0B"f
改进后的归并排序: }w/6"MJ[n
4,qhWe`/
package org.rut.util.algorithm.support; jq12,R2+)
JY6^pC}*
import org.rut.util.algorithm.SortUtil; :c`Gh< u
vAjvW&'g
/** (E]q>'X
* @author treeroot |tuh/e@dx
* @since 2006-2-2 |'N)HH>;
* @version 1.0 [^2c9K^NK
*/ 0hM!#BU5K
public class ImprovedMergeSort implements SortUtil.Sort { R>n=_C
L/2,r*LNx$
private static final int THRESHOLD = 10; Ipyr+7/zJ
m>ApN@n
/* gX!-s*{E
* (non-Javadoc) \d}>@@U&
* .h[yw$z6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LF\HmKM,
*/ bOS; 1~~
public void sort(int[] data) { /K\]zPq
int[] temp=new int[data.length]; EK$3T5e
mergeSort(data,temp,0,data.length-1); nv/'C=+L
} $ucA.9pJ
M A
private void mergeSort(int[] data, int[] temp, int l, int r) { h3t);}Y}D9
int i, j, k; h0)Dj(C
int mid = (l + r) / 2; k}FmdaPI'
if (l == r) I::|d,bR!
return; |!E: [UH
if ((mid - l) >= THRESHOLD) Dg
o-Os@
mergeSort(data, temp, l, mid); TNkvdE-S
else fuF!3Q
insertSort(data, l, mid - l + 1); 3
G_0DS
if ((r - mid) > THRESHOLD) 6w)a.^yx7
mergeSort(data, temp, mid + 1, r); xSy`VuSl
else 9vI<\
Xa
insertSort(data, mid + 1, r - mid); T1=T
ZfP$6%;_
for (i = l; i <= mid; i++) { G_/DzJBF
temp = data; z^^)n
} N|\Q:<!2_w
for (j = 1; j <= r - mid; j++) { yr/G1?k%ML
temp[r - j + 1] = data[j + mid]; S^T
><C
} ]-"G:r
int a = temp[l]; f O ,5
u;
int b = temp[r]; 2rPmu
for (i = l, j = r, k = l; k <= r; k++) { H<Ik.]m
if (a < b) { M)1Y7?r]
data[k] = temp[i++]; }WDzzjDR+
a = temp; k{ ~0BK
} else { TP{2q51yM
data[k] = temp[j--]; B"?ivxM:U
b = temp[j]; cK.z&y0]
} h yK&)y?~
} f@Yo]F U
} ?!HU$>
O_\%8*;
/** !QSj*)V#
* @param data ^xm%~
* @param l Mqv[7.|
* @param i `i<omZ[aT
*/ Fj4>)!^kM
private void insertSort(int[] data, int start, int len) { *WaqNMD[%
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); N> xdX5
} gE: ?C2
} ZXl_cq2r
} z"P/Geb:O
} `3yK<-
Z@,[a
堆排序: d$hBgJe>N
Q|xa:`3?
package org.rut.util.algorithm.support; ( 4(,"
"fu:hHq
import org.rut.util.algorithm.SortUtil; fPPC`d&Q3
ir|c<~_=
/** e2^TQv2(=e
* @author treeroot uH]oHh!}j
* @since 2006-2-2 c{
([U
* @version 1.0 pZz\o
*/ [ylRq7^e
public class HeapSort implements SortUtil.Sort{ 7YFEyX10d
\{v e6`7Rn
/* (non-Javadoc) #MFIsx)r
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =;"=o5g_
*/ 8W Etm}
public void sort(int[] data) { 10_#Z~aU
MaxHeap h=new MaxHeap(); 7-gT:
h.init(data); s }Ql9
for(int i=0;i h.remove(); YD;G+"n?T
System.arraycopy(h.queue,1,data,0,data.length); \@[,UZ
} BU#3fPl
3$ wK*xK
private static class MaxHeap{ CEW1T_1U<\
p(6 sN=
void init(int[] data){ P ; h8
this.queue=new int[data.length+1]; ?N^1v&Q
for(int i=0;i queue[++size]=data; ?4^ 0xGyE
fixUp(size); V503
} Y (pUd3y
} T+e*' <!O
.cm2L,1h
private int size=0; "VDMO^
1YK(oRSDn
private int[] queue; yzT4D>1,
XBoq/kbw!
public int get() { |az2vD6P
return queue[1]; )k;;O7Ck
} m*jTvn
!Au#j^5K-o
public void remove() { Q(36RX%@
SortUtil.swap(queue,1,size--); V';l H2
fixDown(1); F$bV}>-1k
} 7[PEiAI
file://fixdown A=3L_
#nO
private void fixDown(int k) { :bm%f%gg
int j; vA}_x7}n(
while ((j = k << 1) <= size) { l0C`teO
if (j < size %26amp;%26amp; queue[j] j++; SL-;h#-y
4
if (queue[k]>queue[j]) file://不用交换 PD&gC88
break; hH HQmK<r
SortUtil.swap(queue,j,k); axpZ`BUc
k = j; )+R n[MMp
} @S=9@3m{w;
} K`2(Q
private void fixUp(int k) { yM~bUmSg
while (k > 1) { 7i!Vg V
int j = k >> 1; ^qnmKA>"F
if (queue[j]>queue[k]) m7DKC,
break; J\P6
SortUtil.swap(queue,j,k); *MB>,HU
k = j; g(Q1d-L4e
} vd)zvI
} Q;J(
5;
?xrOhA9
} 7B)1U_L0H
d$jwh(Ivs
} }opw_h+/F
Ulx]4;uzf
SortUtil: fbU3-L?
lLDZ#'&An
package org.rut.util.algorithm; ] |nW
R3;%eyu
import org.rut.util.algorithm.support.BubbleSort;
lPI~5N8
import org.rut.util.algorithm.support.HeapSort; s M*ay,v;
import org.rut.util.algorithm.support.ImprovedMergeSort; 4M|uT
9-
import org.rut.util.algorithm.support.ImprovedQuickSort; Z`u$#<ukX
import org.rut.util.algorithm.support.InsertSort; r*]pL<
import org.rut.util.algorithm.support.MergeSort; VX&PkGi?o
import org.rut.util.algorithm.support.QuickSort; ;0Pv49q
import org.rut.util.algorithm.support.SelectionSort; nQoQNB
import org.rut.util.algorithm.support.ShellSort; J|].h
?*%_:fB
/** |/vJ+aKq
* @author treeroot ykx^RmD`~
* @since 2006-2-2 marZA'u%B1
* @version 1.0 Z Cjw)To(
*/ U2A
82;Z
public class SortUtil { L- !1ybB^
public final static int INSERT = 1; S
YDE`-
public final static int BUBBLE = 2; r:;.?f@
public final static int SELECTION = 3; F,{mF2U*$
public final static int SHELL = 4; o$buoGSPc
public final static int QUICK = 5; msM1K1er
public final static int IMPROVED_QUICK = 6; |PlNVd2
public final static int MERGE = 7; XIbZ_G^ +D
public final static int IMPROVED_MERGE = 8; -^lc-$0
public final static int HEAP = 9; @(~:JP?KNC
dWPQp*f2
public static void sort(int[] data) { `r -jWK\
sort(data, IMPROVED_QUICK); i*Ldec^
} k%sH0 9
private static String[] name={ 2h'Wu
qO
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" M{Z
;7n'
}; m$kQbPlatN
lOk8VlH<h
private static Sort[] impl=new Sort[]{ 9MYk5q.X:
new InsertSort(), yjg&/6
new BubbleSort(), 6FQi=}O 1
new SelectionSort(), 8.#{J&h
new ShellSort(), iBd6&?E?<
new QuickSort(), %^pi
new ImprovedQuickSort(), XS [L-NHG
new MergeSort(), J6AHc"k.
new ImprovedMergeSort(), U8w_C\Q
new HeapSort() uI)twry]@
}; RI0^#S_{
B-R#?Xn:!I
public static String toString(int algorithm){ sa(.Anmlj
return name[algorithm-1]; `;E/\eG"
}
M .b8 -`V
4
"HX1qP
public static void sort(int[] data, int algorithm) { 1!~cPD'F
impl[algorithm-1].sort(data); Y~-y\l;Tr
} Ve3z5d:^
UtQey ;w
public static interface Sort { -f)fiQ-<
public void sort(int[] data); FT@uZWgQ=
} M
9t7y
x8PT+KC
public static void swap(int[] data, int i, int j) { |)29"_Kk5
int temp = data; hTr5Q33y>
data = data[j]; lUm(iYv;H
data[j] = temp; VN0We<\Z
} CwA_jOp
} ViPC Yt`of