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。 "+M0lGTB
插入排序: .~C%:bDnX7
d@%PTSX
package org.rut.util.algorithm.support; %Yt;)q3U
K&VMhMVb
import org.rut.util.algorithm.SortUtil; r=HL!XFk
/** bU \T
* @author treeroot I~GHx5Dk
* @since 2006-2-2 l(9AwVoAR|
* @version 1.0 ]D&U}n
*/ Dz&,g+>$J
public class InsertSort implements SortUtil.Sort{ "TI>_~
%'uei4
/* (non-Javadoc) /|8rVYSs
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IczMf%
*/ xO^lE@a o
public void sort(int[] data) { }_BNi;H
int temp; nAC>']K4$
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); mp)+wZAN&
} 388vdF
} AJ3%Z$JJ;s
} 6zi 5#23
(tyky&$!
} $V !25jQ
p, T4BO
冒泡排序: 34QW^{dgE
I7W`\d)
package org.rut.util.algorithm.support; g[*"LOw
W&k@p9
import org.rut.util.algorithm.SortUtil; S17;;w0
\ Q^grX
/** 0(>3L :
* @author treeroot )HcLpoEi
* @since 2006-2-2 FTr'I82m(
* @version 1.0 `-JVz{z
*/ UfIr"bU6
public class BubbleSort implements SortUtil.Sort{ -
~4na{6x
D|amKW7
/* (non-Javadoc) M0g=gmau
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *+XiBho
*/ +/bD9x1H
public void sort(int[] data) { s(?%A
int temp; (d/!M
n6L
for(int i=0;i for(int j=data.length-1;j>i;j--){ A2ufET
if(data[j] SortUtil.swap(data,j,j-1); q65]bs4M
} $Dd-2p
} -&Q+x,.%
} artn _
} ~%2yDhdQ
+MD84YR
} p6aR/gFkqv
sH>`eqY
选择排序: puLgc$?
Fv*QcB9K
package org.rut.util.algorithm.support; _%er,Ed
S dN&%(ZE
import org.rut.util.algorithm.SortUtil; EDuH+/:n
@q`T#vd
/** 5dhy80|g]
* @author treeroot oaZdvu@y
* @since 2006-2-2 ,
@!X!L
* @version 1.0 VR .t
*/ XUKlgl!+.
public class SelectionSort implements SortUtil.Sort { 9]{va"pe7
( et W4p
/* 6O,:I
* (non-Javadoc) in5e *
* l p(D@FT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -Lq2K3JHyn
*/ V1,/qd_
public void sort(int[] data) { g*(z.
int temp; GXIzAB(
for (int i = 0; i < data.length; i++) { &2U%/JqY
int lowIndex = i;
WzoI0E`
for (int j = data.length - 1; j > i; j--) { pF7N = mO
if (data[j] < data[lowIndex]) { <f`n[QD2z
lowIndex = j; }#-@5["-X
} `N&*+!O%
} ^{{a
v?h
SortUtil.swap(data,i,lowIndex);
q)f_!N
} 0}"\3EdAbD
} W9pY=9]p+
nF_q{e7
} AorY#oq
L N
Fe7<y
Shell排序: j "'a5;Sy
a5R.
\a<q
package org.rut.util.algorithm.support; MPDRMGR@i
h_{f_GQ"
import org.rut.util.algorithm.SortUtil; ]8fn1Hx\
?wv^X`Q*~
/** ^EKRbPA9:<
* @author treeroot BWvM~no
* @since 2006-2-2 iC5HrOl6U
* @version 1.0 .drY
*/ FZO&r60$E
public class ShellSort implements SortUtil.Sort{ h`n '{s
jpO0dtn3=
/* (non-Javadoc) KS<@;Tt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :V5 Co!/+
*/ BWQ`8
public void sort(int[] data) { Ws7fWK;
for(int i=data.length/2;i>2;i/=2){ m [^)Q9o}
for(int j=0;j insertSort(data,j,i); .d}yQ#5z
} 4sntSlz)~k
} 2$kB^g!:o
insertSort(data,0,1); bhGRD{=
} Y,GlAr s4
tk R~(h
/** jL8A_'3B
* @param data Z5n-3h!+ED
* @param j w|]Tt="
* @param i *;9H \%
*/ -3i(N.)<;
private void insertSort(int[] data, int start, int inc) { AWi>(wk<
int temp; c+E \e] {
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); T7"QwA
} qD4s?j-9
} ~?Vo d|>
} n@ SUu7o
auc:|?H~1n
} R6BbkYWrX
Wh..QVv
快速排序: b@&uwS v
~] V62^0
package org.rut.util.algorithm.support; }~|`h1JF
Uz_p-J0
import org.rut.util.algorithm.SortUtil; =.;ib6M
D4@?>ek6U
/** LdH1sHy*d`
* @author treeroot 3o[(pfcU
* @since 2006-2-2 eOiH7{OA,
* @version 1.0 wW p7N
*/ =1,!EkG
public class QuickSort implements SortUtil.Sort{ ZP!.C&O
3e;|KU
/* (non-Javadoc) /KWdIP#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Nwt[)\W `
*/ n}F$kyI
public void sort(int[] data) { fo+s+Q|Y
quickSort(data,0,data.length-1); Y @'do)
} ]T'8O`
private void quickSort(int[] data,int i,int j){ "i(f+N,)
int pivotIndex=(i+j)/2; \t1#5
file://swap kJJiDDL0;*
SortUtil.swap(data,pivotIndex,j); G-2~$ u
q[VQ?b~9
int k=partition(data,i-1,j,data[j]); l"E{ ?4
SortUtil.swap(data,k,j); }dzVwP=
if((k-i)>1) quickSort(data,i,k-1); p?>J86%[
if((j-k)>1) quickSort(data,k+1,j); z^`4n_(Ygu
@,eo*
} "Ot%{&:2
/** VD7-;
* @param data esA^-$
* @param i S$hxR
* @param j e|~{X\l
* @return y>0 @.
*/ Cip|eM &l
private int partition(int[] data, int l, int r,int pivot) { Yg '(
do{ L`K)mCr
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 0.wF2!V.
SortUtil.swap(data,l,r); D((/fT)eD
} )s^gT]"N
while(l SortUtil.swap(data,l,r); nVWU\$Ft
return l; eA2*}"W
} 0J'Cx&Rg
Xe\}(O
} W|@SXO)DY
72xf|s=
改进后的快速排序: g]HWaFjc5
T88$sD.2
'
package org.rut.util.algorithm.support; 4qsct@K,
r9u'+$vmF
import org.rut.util.algorithm.SortUtil; 5JVBDA^#om
guYP|
/** -M6vg4gf
* @author treeroot Gdb0e]Vt+
* @since 2006-2-2 5)S;R,
* @version 1.0 A\rY~$Vr
*/ T_c`=3aO
public class ImprovedQuickSort implements SortUtil.Sort { !p+rU?
EeQ8Uxb7
private static int MAX_STACK_SIZE=4096; y'8T=PqY[t
private static int THRESHOLD=10; \G v\&_
/* (non-Javadoc) -u%o) ;B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nt|n[-}
*/ /];N 1
public void sort(int[] data) { 85io%>&0
int[] stack=new int[MAX_STACK_SIZE]; 9-m_
e=jk6
~h8k4eM
int top=-1; ,Aq, f$5V
int pivot; c/bT5TIEWs
int pivotIndex,l,r; C $])q`9
(AZneK
:*
stack[++top]=0; ld(_+<e
stack[++top]=data.length-1; / zNVJhC
HI D6h!
while(top>0){ 8q9^
int j=stack[top--]; `_Iyr3HAf
int i=stack[top--]; 9m>L\&\_e
Th%w-19,8
pivotIndex=(i+j)/2; lmoYQFkYP
pivot=data[pivotIndex]; |AvsT{2
~!TrC<ft
SortUtil.swap(data,pivotIndex,j); ._x"b5C
: ciwh
file://partition -M]/Xv]
l=i-1; iWW!'u$+I`
r=j; }.|a0N 5
do{ ZUB]qzmK
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ?UflK
SortUtil.swap(data,l,r); E.:eO??g
} w].DLoz
while(l SortUtil.swap(data,l,r); kp[&SKU
c
SortUtil.swap(data,l,j); lxXF8c>U
5C`Vno~v
if((l-i)>THRESHOLD){ ',FVT4OMw
stack[++top]=i; 9} C(M?d
stack[++top]=l-1; L)|hjpQ
} FN sSJU3ld
if((j-l)>THRESHOLD){ U/U_q-z]
stack[++top]=l+1; olo9YrHn
stack[++top]=j; /8_x]Es/
} p|;#frj
E?K(MT&@
} tx1TtWo
file://new InsertSort().sort(data); _pS)bxw
insertSort(data); d<\X)-"
} +BI%.A`2
/** 5 YIk
* @param data <Vyl*a{%
*/ /*S6 /#
private void insertSort(int[] data) { }F V_jJ
int temp; P1TTaYu
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 'zt}\ Dt
} o~:({
} &{M-<M
} \3U.;}0_X
$dt*
4n '
} uX7"u*@Q*~
)buy2#8UW
归并排序: O'k<4'TC
)u!}`UJ
package org.rut.util.algorithm.support; yq[CA`zVN
9Kz}
import org.rut.util.algorithm.SortUtil; q4/P'.S
Hn)^C{RN*{
/** fk5pPm|MiL
* @author treeroot 0[Zs8oRiI
* @since 2006-2-2 "\afIYS I
* @version 1.0 ,`ehR6b
*/ QA!'p1{#
public class MergeSort implements SortUtil.Sort{ M|z4Dy
.0y .0=l
/* (non-Javadoc) Y5IQhV.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y-DHW/Z~
*/ $*0XWrE
public void sort(int[] data) { rJd-e96
int[] temp=new int[data.length]; F+Hmp\rM#
mergeSort(data,temp,0,data.length-1); %`dVX
EO
} Y#-pK)EeU
U3>ES"N
private void mergeSort(int[] data,int[] temp,int l,int r){ .a]av
int mid=(l+r)/2; '! ;Xxe5
if(l==r) return ;
3AuLRI
mergeSort(data,temp,l,mid); L{6Vi&I84[
mergeSort(data,temp,mid+1,r); R/c-sV
for(int i=l;i<=r;i++){ Wzh#dO?7
temp=data; NydoX9
} NzID[8`
int i1=l; );z/
@Q
int i2=mid+1; 9@p+g`o
for(int cur=l;cur<=r;cur++){ g7LS
if(i1==mid+1) G`jJKiC
data[cur]=temp[i2++]; .)=j~}\
else if(i2>r) VelX+|w
data[cur]=temp[i1++]; l)
)Cvre+
else if(temp[i1] data[cur]=temp[i1++]; R^4
j0L
else @JD!.3
data[cur]=temp[i2++]; 7bam`)n
} %Zu+=IZ
} /@s(8{;
Q
S.w#"X[
} Z2\Xe~{
4L6'4 t"s
改进后的归并排序: llBW*4'
24_/JDz
package org.rut.util.algorithm.support; >R6>*|~S
?)c9!hR
import org.rut.util.algorithm.SortUtil; /kd6Yq(y
ud,_^Ul
/** 0R?LWm
j
* @author treeroot klC48l
* @since 2006-2-2 +Xr87x;
* @version 1.0 nR$Q~`
*/ 5./(n7d_
public class ImprovedMergeSort implements SortUtil.Sort { Nj4^G ~_
PHn3f;I
private static final int THRESHOLD = 10; o{
\r1<D
KA0_uty/T
/* XbAoW\D(
* (non-Javadoc) _"";SqVB
* IY9##&c3>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZNbb8v
*/ 4^BHJOvs
public void sort(int[] data) { NA8$G|.?
int[] temp=new int[data.length]; wn{DY
v7B
mergeSort(data,temp,0,data.length-1); 'St\$X
} J{5&L &4
GCA?sFwo>
private void mergeSort(int[] data, int[] temp, int l, int r) { j%s:d(H`
int i, j, k; Kkds^v6
int mid = (l + r) / 2; rv97Wm+
if (l == r) {5gh.
return; -r"h[UV)
if ((mid - l) >= THRESHOLD) iYxpIqWw
mergeSort(data, temp, l, mid); ::rKW*?
else -}*YfwK
insertSort(data, l, mid - l + 1); MXU8QVSY"
if ((r - mid) > THRESHOLD) 41`&/9:"_M
mergeSort(data, temp, mid + 1, r); 4m$Xjj`vE
else "*aL(R
insertSort(data, mid + 1, r - mid); dD8f`*"*=
09u@-
for (i = l; i <= mid; i++) { onAC;<w
temp = data; Vnq&lz%QqC
} 8L*P!j9`EY
for (j = 1; j <= r - mid; j++) { CR<Nau>
temp[r - j + 1] = data[j + mid]; "Dwaq*L
} L2
tSKw~
int a = temp[l]; PG/xX
H
int b = temp[r]; d$` NApr
for (i = l, j = r, k = l; k <= r; k++) { ueazAsk3g
if (a < b) { RZ&T\;m,7
data[k] = temp[i++]; v81H!c.*
a = temp; n$T'gX#5
} else { <U()
*0
data[k] = temp[j--]; xT$9M"
b = temp[j]; kMLWF
} \.<V~d?
} 564)ha/^(
} V<;w
r/vRaOg>X
/** iv/!c Mb
* @param data noa=wy
* @param l sC.aT(meJ
* @param i ,s,VOyr @F
*/ ,2YkQ/>
private void insertSort(int[] data, int start, int len) { KDX34Fr1
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); \{ui{8+G
} nZ 0rxx[V?
} U&\8~h
} L(2KC>GvA
} %kJ_o*"
JW4~Qwx
堆排序: MdOQEWJ$|
5L}qL?S`x|
package org.rut.util.algorithm.support; zLxO\R!d
"NamP\hj
import org.rut.util.algorithm.SortUtil; hkq[xgX
ZsPT!l,
/** =i/7&gC
* @author treeroot C"P40VQoo
* @since 2006-2-2 ,:QzF"MV
* @version 1.0 'bXm,Ed
*/ 1c}
%_Z/
public class HeapSort implements SortUtil.Sort{ A%pBvULH
#X(KW&;m
/* (non-Javadoc) .;0?r9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IE-c^'W=}m
*/ Iu`xe
public void sort(int[] data) {
S=o1k
MaxHeap h=new MaxHeap(); S6r$n
h.init(data); =hO0@w
for(int i=0;i h.remove(); HNRZ59Yyq
System.arraycopy(h.queue,1,data,0,data.length); X;I;CZ={
} sacaL4[_<
jz%%r Q(
private static class MaxHeap{ i0%S6vmaS
7aJLC!
void init(int[] data){ ^$7Lmd.qI
this.queue=new int[data.length+1]; ~EVD NnHEr
for(int i=0;i queue[++size]=data; a;Q.R
fixUp(size); q.l"Y#d
} Fx.hti
} +d0&(b
\WnI&nu
private int size=0; J<<0U;
<=
xmJx-V
private int[] queue; EhkvC>y
,[lS)`G
public int get() { ;/3
<
return queue[1]; i 5"g?Wa2N
} CVh^~!"7j
6p
X[m{
public void remove() { yu'2
SortUtil.swap(queue,1,size--); El~x$X*
fixDown(1); s 9,?"\0Zm
} "-'w,g
file://fixdown LP8Stj JP
private void fixDown(int k) { #[^?f[9r
int j; v(?^#C>6W
while ((j = k << 1) <= size) { ,iXE3TN;W
if (j < size %26amp;%26amp; queue[j] j++; Cw<bu|?
if (queue[k]>queue[j]) file://不用交换 gF@51K
break; 5h9`lS2
SortUtil.swap(queue,j,k); AS34yM(h
k = j; `,mE
'3&
} I-E}D"F;p[
} "(6]K}k@
private void fixUp(int k) { #-ioLt%
while (k > 1) { ZE@!s3\
int j = k >> 1; 30(O]@f~
if (queue[j]>queue[k]) 2Rc'1sCth-
break; xD}ha
SortUtil.swap(queue,j,k); 2} ,|RQETy
k = j; dF2 &{D"J
} ef\Pu\'U
} /;t42
g9w
@aU%1h5W;l
} 4+t9"SD
c]`}DH,TJ
} Ds4n>V,o
#:{Bd8PS
SortUtil: OXy>Tlv
36154*q
package org.rut.util.algorithm; N#-P}\Q9
;?>xuC$
import org.rut.util.algorithm.support.BubbleSort; +1j@n.)ft
import org.rut.util.algorithm.support.HeapSort; [-)N}rL>
import org.rut.util.algorithm.support.ImprovedMergeSort; (Yz EsY
import org.rut.util.algorithm.support.ImprovedQuickSort; `p@YV(
import org.rut.util.algorithm.support.InsertSort; ~yH<,e
import org.rut.util.algorithm.support.MergeSort; i]:T{2
import org.rut.util.algorithm.support.QuickSort; 2f8fA'|O
import org.rut.util.algorithm.support.SelectionSort; `B{N3Kxbp
import org.rut.util.algorithm.support.ShellSort; [HJ^'/bB'
>y C1X|d~t
/** +$KUy>
* @author treeroot Np4';H
* @since 2006-2-2 Hmt}@
* @version 1.0 nYJ)M
AG@
*/ }(h_ztw
public class SortUtil { >t|u 8/P
public final static int INSERT = 1; =.9L/74@
public final static int BUBBLE = 2; Xqt3p6
public final static int SELECTION = 3; uXiAN#1
public final static int SHELL = 4; <StyO[
public final static int QUICK = 5; G992{B
public final static int IMPROVED_QUICK = 6; !/W[6'M#p
public final static int MERGE = 7; *ip2|2G$
public final static int IMPROVED_MERGE = 8; 8=rD'*
public final static int HEAP = 9; e_Na_l]
EQDsbG0x
public static void sort(int[] data) { QMoh<[3qu
sort(data, IMPROVED_QUICK); bce>DLF
} $;1#gq%
private static String[] name={ [:-Ltfr
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ,E{z+:Es
}; RF/I*5
z; 6Tp
private static Sort[] impl=new Sort[]{ @^8tk3$Y
new InsertSort(), bmT_tNz
new BubbleSort(), X}.y-X#v5J
new SelectionSort(), ~y.{WuUD
new ShellSort(), (9r\YNK
new QuickSort(), "oZ-W?IK E
new ImprovedQuickSort(), h}&WBN
new MergeSort(), T8&
kxp
new ImprovedMergeSort(), $Hcp.J[O
new HeapSort() 8W$uw~|dw
}; tMxa:h;/x
vT)(#0>z
public static String toString(int algorithm){ R=g~od[N_
return name[algorithm-1]; 7iCH$}
} ~Zbr7zVn
J0BA@jH5
public static void sort(int[] data, int algorithm) { %$/t`'&o-
impl[algorithm-1].sort(data); hu (h'
} T
`x:80
TwBwqQ)t
public static interface Sort { b/IT8Cm3
public void sort(int[] data); E/mp.f2!
} .LDK+c
tbHU(#~
public static void swap(int[] data, int i, int j) { ~1xln?Q
int temp = data; !+tz<9BBY
data = data[j]; m\>531&
data[j] = temp; QeP8Vl&e:
} ZS0=xS5q)
} L&$ X\\Lv^