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~sgE}#
插入排序: ?M^t4nj
sA}R!
package org.rut.util.algorithm.support; e%6{P
!$Z"\v'b
import org.rut.util.algorithm.SortUtil; \<**SSN
/** <J-Z;r(gQN
* @author treeroot QEa=!O
* @since 2006-2-2 #1@~w}Dh
* @version 1.0 VKz<7K\/
*/ UmX[=D|
public class InsertSort implements SortUtil.Sort{ Oy$BR
<\
avu,o
/* (non-Javadoc) ;!?K.,N:N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
@U@ yIv
*/ ;4$C$r!t
public void sort(int[] data) { b_yXM
int temp; ^<0 NIu}
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); QaR.8/xV
} NCt sx /C
} oE1]vX
} ()?co<@(l
p)xI5,b$9
} y>|XpImZ
*(B[J
冒泡排序: <t% A)L%
nX%'o`f
package org.rut.util.algorithm.support; EG4bFmcs
[t{#@X
import org.rut.util.algorithm.SortUtil; !U:s.^{
ecpUp39\
/** Y{RB\}f(
* @author treeroot MXk. 2
* @since 2006-2-2 W+e*(W|d6
* @version 1.0 [oLQd-+
*/ =hIT?Z6A
public class BubbleSort implements SortUtil.Sort{ ^]&{"!
I?Fa
/* (non-Javadoc) +t4m\/y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5C1Rub)
*/ K"j=_%{
public void sort(int[] data) { 2-!Mao"^
int temp; &> .1%x@R
for(int i=0;i for(int j=data.length-1;j>i;j--){ #l# [\6
if(data[j] SortUtil.swap(data,j,j-1); MmH_gR
} KxmPL
} ID# qKFFW
} &xroms"S=
} e-3pg?M
O&iYGREO
} tkqBCKpDa
ZM`P~N1?)g
选择排序: w*%$
lhp!
h\*rv5\M
package org.rut.util.algorithm.support; %L>nXj
~PW}sN6ppG
import org.rut.util.algorithm.SortUtil; iCRw}[[
<<5 :zlb
/** |!5T+H{Sj
* @author treeroot 9w;J7jgOT!
* @since 2006-2-2 :;q_f+U
* @version 1.0 1[g!^5W
*/ Fi%W\Y'
public class SelectionSort implements SortUtil.Sort { ~Z6p3#
!o
XW_xNkpL5c
/* \}QuNwc
* (non-Javadoc) <` j[;>O
* 1 lCikS^c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jo aDX ,
*/ \*!%YTZ~
public void sort(int[] data) { 3J~kiy.nfW
int temp; 3hf;4Mb
for (int i = 0; i < data.length; i++) { 0!,gT H>
int lowIndex = i; &xuwke:[
for (int j = data.length - 1; j > i; j--) { *R\/#Y|
if (data[j] < data[lowIndex]) { - b\V(@5
lowIndex = j; 3p
1EScH
} 6+nMH
+[
} 8<wuH#2<y
SortUtil.swap(data,i,lowIndex); dF11Rj,~ 8
} l3?,gd.-
} Rk jKIa
:Mu8W_
} %>9+1lUhV
+bc#GzVF
Shell排序: 9#T%bB"J
?V)C9@bp
package org.rut.util.algorithm.support; 1;:t~Y
@23RjoK
import org.rut.util.algorithm.SortUtil; gLSG:7m@
d?&!y]RS#
/** =#Cf5s6qt
* @author treeroot vgA!?P3
* @since 2006-2-2 fZV8o$V
* @version 1.0 7|M $W(P
*/ U]! .~ji3
public class ShellSort implements SortUtil.Sort{ xe gL!
fJ&<iD)6
/* (non-Javadoc) [zTYiNa
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PMN2VzE4{
*/ Ns|V7|n]
public void sort(int[] data) { u->@|tEq
for(int i=data.length/2;i>2;i/=2){ OT}Yr9h4
for(int j=0;j insertSort(data,j,i); O`[iz/7m
} yEpN,A
} 8LQ59K_WX
insertSort(data,0,1); ?F87C[o
} T5dUJR2k$
$dZ>bXUw:
/** 5} MlZp
* @param data ELrZ8&5G
* @param j &!DZW5
* @param i F;Q_*0mIQ
*/ MX`Wg
private void insertSort(int[] data, int start, int inc) { `mKlv~$1^
int temp; \5_P5q:`
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); h%1~v$W`
} &ap`}^8pM
} A|taP$%
} {GQ
Aa
2c"N-c&A
} [Zt#
c C+
&J;H@d||
快速排序: Cb
)= n6
(U(/C5'
package org.rut.util.algorithm.support; <nw<v9Z
s
la*3~?*
import org.rut.util.algorithm.SortUtil; _<%\h?W$
)+w/\~@
/** WpJD=C%
* @author treeroot B3cf] S%
* @since 2006-2-2 R?bn,T>
* @version 1.0 GcZM+ c
*/ iz9\D*or
public class QuickSort implements SortUtil.Sort{ }c35FM,
_z<Y#mik
/* (non-Javadoc) UVT>7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $(KIB82&
*/ ?@lx
public void sort(int[] data) { M$&WM{Pr^
quickSort(data,0,data.length-1); |B%BwE
} zM_DE
private void quickSort(int[] data,int i,int j){ y|e2j&m
int pivotIndex=(i+j)/2; Hb
A3*2
file://swap sP6 ):h
SortUtil.swap(data,pivotIndex,j); ![a/kj
Wkg*J3O
int k=partition(data,i-1,j,data[j]); SaR}\Up
SortUtil.swap(data,k,j); 192 .W+H<
if((k-i)>1) quickSort(data,i,k-1); ?#BZ `H
if((j-k)>1) quickSort(data,k+1,j); #aitESbT
y$j1?7
} QIij>!c4
/** <TLGfA1bC
* @param data &\"Y/b]
* @param i TV1e
bH7q
* @param j 6K4`;
* @return MtZt8s
*/ 9feD!0A
private int partition(int[] data, int l, int r,int pivot) { FylWbQU9
do{ aQ!9#d_D
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); C3
gZ6m
SortUtil.swap(data,l,r); B@cJ\
} M>?aa6@0
while(l SortUtil.swap(data,l,r); 7y>Tn`V8G
return l; I" 8d5a}
} 6P%<[Z
ilDJwZg#
} k
Zk .]b
:S QDqG
改进后的快速排序: < 72s7*Rv
A$9q!Ui#d
package org.rut.util.algorithm.support; |u^)RB
0(Y%,q
import org.rut.util.algorithm.SortUtil; wUru1_zjO
Ud>`@2
/** ee&nU(pK
* @author treeroot $xRo<,OV+
* @since 2006-2-2 zQL!(2
* @version 1.0
UfK4eZx*`
*/ 0M#N=%31
public class ImprovedQuickSort implements SortUtil.Sort { nmD1C_&
CDQJ bvx
private static int MAX_STACK_SIZE=4096; X+`ddX
private static int THRESHOLD=10; -@%t"8
/* (non-Javadoc) U9<_6Bsd
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W:VW_3
*/ *C4~}4WT\
public void sort(int[] data) { q?;N7P
int[] stack=new int[MAX_STACK_SIZE]; %'{V%IXQ
-!XrwQyk
int top=-1; 3
R5%N
~
int pivot; Ff[H>Lp~
int pivotIndex,l,r; u{g]gA8s
:FoOQ[Q
stack[++top]=0; ~8jThi
U
stack[++top]=data.length-1; KH>Sc3p
McT\ R{/
while(top>0){ /\TQc-k?2
int j=stack[top--]; }7iUagN
int i=stack[top--]; 4]"a;(
q$MHCq;
pivotIndex=(i+j)/2; |9+bSH9
pivot=data[pivotIndex]; H,(F1+~d
96vj)ql
SortUtil.swap(data,pivotIndex,j); -`-ACWeNV
ge^!F>whr
file://partition h^%GE;N
l=i-1; @AvM
r=j; .>k=A|3G
do{ xM% H~(
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); hX0RET
SortUtil.swap(data,l,r); nURvy}<r
} y!S^xS
while(l SortUtil.swap(data,l,r); VKT@2HjNT`
SortUtil.swap(data,l,j); #t=[w
I") H~
if((l-i)>THRESHOLD){ zTkFX67)
stack[++top]=i; 3 sS=?q
stack[++top]=l-1; !IO&&\5
} 0FG5_t"",\
if((j-l)>THRESHOLD){ hbVE;
9
stack[++top]=l+1; |)^clkuGX
stack[++top]=j; !$D&6M|C8l
} w|&,I4["
:0B
|<~lX
} 40 Au9o
file://new InsertSort().sort(data); UE"7
insertSort(data); {VBR/M(q
} j?=V tVP
/** H9sZR>(^
* @param data ah 4kA LO
*/ P\.WXe#j
private void insertSort(int[] data) { 'n>K^rA
int temp; $X`bm*
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); e%pu.q\gK
} %'$f ?y
} IZ+*`E
} +z+F-
a4%`"
} k - FB
=\M)6"}y}
归并排序: }bZ
8-v
{":c@I
package org.rut.util.algorithm.support; +IvNyj|
"Lb fF
import org.rut.util.algorithm.SortUtil; n.@#rBKZ
]GcV0&|
/** kl| g
* @author treeroot $6 W3EOl
* @since 2006-2-2 Xc{ZN1 4n
* @version 1.0 Og+)J9#
*/ >Q&CgGpW$
public class MergeSort implements SortUtil.Sort{ x,w8r+~5
yXkt:O,i
/* (non-Javadoc) _0w1kqW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j]AekI4I
*/ ?'Cb-C_
public void sort(int[] data) { hMv2"V-X
int[] temp=new int[data.length]; 8IeI0f"l)
mergeSort(data,temp,0,data.length-1); '[%jjUU
} 1bd$XnU
[@ILc*2O
private void mergeSort(int[] data,int[] temp,int l,int r){ ebzzzmwo
int mid=(l+r)/2; 1y7y0V
if(l==r) return ; Qy/uB$q{A
mergeSort(data,temp,l,mid); #kj~G]QA
mergeSort(data,temp,mid+1,r); ]Z=Ij
gr$
for(int i=l;i<=r;i++){ U4=]#=R~o
temp=data; NJk)z&M
} AHq M7+r9
int i1=l; Is
ot4HLM
int i2=mid+1; iZC>)&ax
for(int cur=l;cur<=r;cur++){ lHcA j{6
if(i1==mid+1) C(}^fJ6r
data[cur]=temp[i2++]; JT}.F!q6E
else if(i2>r) E!uJ6\
data[cur]=temp[i1++]; emA.{cVr!
else if(temp[i1] data[cur]=temp[i1++]; I4ebkP gf
else 36nyu_h:R
data[cur]=temp[i2++]; ,'=hjIel
} {aoMJJq
} 0fA=_=A,
B&
"RS
} fSbS(a
'(tj[&aL
改进后的归并排序: @`6}`k
.wP/ai>}
package org.rut.util.algorithm.support; e#1.T
alVdQfu
import org.rut.util.algorithm.SortUtil; 3EI]bmi~
S.1(3j*
/** 7H4L-J3
* @author treeroot P:qz2Hw
* @since 2006-2-2 nX )f'[ 7
* @version 1.0
>9{zQf!
*/ &Bm&i.r
public class ImprovedMergeSort implements SortUtil.Sort { 02(h={
BGN9,ii
private static final int THRESHOLD = 10; G?R_aPP
*Z >
/* 9j0o&Xn
* (non-Javadoc) CG.,/]_
* S"Kq^DN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i *'Z3Z)
*/ ;?zF6zvQ
public void sort(int[] data) { 07FT)QTE
int[] temp=new int[data.length]; VtWT{y5Ec
mergeSort(data,temp,0,data.length-1); _W}(!TKO
} R#ya,L
?,>5[Ha^?
private void mergeSort(int[] data, int[] temp, int l, int r) { S@Iw;V
int i, j, k; oPsK:GC`U
int mid = (l + r) / 2; @7%.7LK
if (l == r) i-]U+m*
return; `0rRKlb j4
if ((mid - l) >= THRESHOLD) (n,N8k;
mergeSort(data, temp, l, mid); $~G@
else ;
h85=l<8u
insertSort(data, l, mid - l + 1); tvGlp)?.
if ((r - mid) > THRESHOLD) F 5U|9<
mergeSort(data, temp, mid + 1, r); sBU_Ft
else N}DL(-SQ3
insertSort(data, mid + 1, r - mid); "W5rx8a
^&MK42,\
for (i = l; i <= mid; i++) { n+rM"Gxz
temp = data; 'BhwNuW\"
} @D]lgq[
for (j = 1; j <= r - mid; j++) { C `6S}f,
temp[r - j + 1] = data[j + mid]; 5B?i(2
} Im+7<3Z
int a = temp[l]; !b63ik15O~
int b = temp[r]; WL1\y|
for (i = l, j = r, k = l; k <= r; k++) { $ser+Jt=
if (a < b) { ceG&,a$\
data[k] = temp[i++]; A?r^V2+j
a = temp; *gDl~qNRoS
} else { NH4?q!'G
data[k] = temp[j--]; SO_>c+Dw
b = temp[j]; I0_Ecp
} #)]E8=}
} j8a[
(
} g YUTt
(v^Z BM_
/** "mA1H]r3
* @param data +>}o;`hPe
* @param l R$d7\nBG
* @param i P#;Th8k{K2
*/ kC`Rd:5
private void insertSort(int[] data, int start, int len) { y42#n
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); =)
}nLS3t
} V^sc1ak1Q
} P,ydt
} i/*,N&^
} NbkK&bz
;A"\?i Q
堆排序: G "brT 5:
>f@ G>H)+
package org.rut.util.algorithm.support; y\,f6=%k
" #v%36U
import org.rut.util.algorithm.SortUtil; oM-[B h]A
UP8{5fx'
/** N}mh}
* @author treeroot w
&
P&7
* @since 2006-2-2 ]\dHU.i
* @version 1.0 t^U^Tr
*/ AY88h$a
public class HeapSort implements SortUtil.Sort{ 2y%R:Mu
BIj
/* (non-Javadoc) c\K<sM{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $>r5>6
*/ :)4*^a/lC
public void sort(int[] data) { U&W"Ea=R/
MaxHeap h=new MaxHeap(); $3\,h;y
h.init(data); YlKFw|=
for(int i=0;i h.remove(); Y.-S=Y
System.arraycopy(h.queue,1,data,0,data.length); T5e^J"
} q.T:0|
H,K`6HH
private static class MaxHeap{ ?1w"IjUS
ag;dc
void init(int[] data){ X 8R1a?
this.queue=new int[data.length+1]; pkk4h2Ah
for(int i=0;i queue[++size]=data; "dtlME{Bx
fixUp(size); fRNP#pi0u
} o;J;k_[MX
} y-a|Lu*
O{q&]~,
private int size=0; vRr9%zx
V3uXan_
private int[] queue; B^q<2S;
Z@M6!;y#
public int get() { WcEt%mGQ,
return queue[1]; Nfb`YU=
} X-/Ban
bVK$.*,
public void remove() { }_%P6
SortUtil.swap(queue,1,size--); {y-`QS
fixDown(1); (p,}'I#i*
} I$j|Rq
file://fixdown J-XTN"O
private void fixDown(int k) { zy>}L #
int j; C}Qt "-%
while ((j = k << 1) <= size) { 8xTix1u0
if (j < size %26amp;%26amp; queue[j] j++; x~+-VF3/
if (queue[k]>queue[j]) file://不用交换 mi^hvks<
break; S^j,f'2
SortUtil.swap(queue,j,k); jQ$BPEG&X
k = j; KB[QZ`"%!
} |GuEGmR
} (/?R9T[V&^
private void fixUp(int k) { S#2[%o
while (k > 1) { 2w4MJ,Uw
int j = k >> 1; ri+U0[e3
if (queue[j]>queue[k]) vr4S9`,
break; Ue7 6py9
SortUtil.swap(queue,j,k); ;k}H(QI
k = j; ~L'nzquF
} f#OQ (WTJE
} ZqK]jT6V/X
%rcFT_
} jBRPR
R0
1X&B:_
} vGN3 YcH
Zi4d]
SortUtil: =DMbz`t
28oJFi]
package org.rut.util.algorithm;
MZ~.(&
Pfan7fq+
import org.rut.util.algorithm.support.BubbleSort; TB#Nk5
import org.rut.util.algorithm.support.HeapSort; zH=hIVc
import org.rut.util.algorithm.support.ImprovedMergeSort; Dl A Z"C
import org.rut.util.algorithm.support.ImprovedQuickSort; # ZTLrq5b
import org.rut.util.algorithm.support.InsertSort; o0`q#>7!_b
import org.rut.util.algorithm.support.MergeSort; j04/[V)
import org.rut.util.algorithm.support.QuickSort; x+:zq<0|
import org.rut.util.algorithm.support.SelectionSort; Kv?;cu!
import org.rut.util.algorithm.support.ShellSort; @a(oB.i
784;]wdy\
/** RGp'b
* @author treeroot 2 ~-( A
* @since 2006-2-2 ikHOqJ-,m
* @version 1.0 p(?3
V
*/ ps+:</;Z
public class SortUtil { )4uq
iA6
public final static int INSERT = 1; SRf5W'4y
public final static int BUBBLE = 2; H\+-cvl
public final static int SELECTION = 3; * nCx[
public final static int SHELL = 4; c<tmj{$
public final static int QUICK = 5; J"&y|;G
public final static int IMPROVED_QUICK = 6; oEIqA
public final static int MERGE = 7; Yi Zx{5
public final static int IMPROVED_MERGE = 8; ) b:4uK
A
public final static int HEAP = 9; 5f_7&NxT
@vAFfYU9<.
public static void sort(int[] data) { IG|\:Xz
sort(data, IMPROVED_QUICK); )U5u" ]9~
} v{koKQ'Y()
private static String[] name={ CZ tiWZ
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" M/B/b<['
}; 5i9Ub|!P
w-FHhf
private static Sort[] impl=new Sort[]{ 3Gd|YRtk
new InsertSort(), (\&
62B1
new BubbleSort(), Vp7b4n<
new SelectionSort(), Fu##'#
new ShellSort(), -u~eZ?(!Ye
new QuickSort(), /qXzOd
new ImprovedQuickSort(), z2~87fv+
new MergeSort(), ZNL5({lv
new ImprovedMergeSort(), s=U\_koyH
new HeapSort() >76 |:Nq
}; <Uwwux<v
U>A6eWhH
public static String toString(int algorithm){ ImHU:iR[J-
return name[algorithm-1]; r|-J8s#
} qTy v.#{y
K PggDKS
public static void sort(int[] data, int algorithm) { JqEb;NiP)5
impl[algorithm-1].sort(data); :8]6#c6`74
} e=J*Esc@k
sam[s4@eQ
public static interface Sort { 26PD[af64O
public void sort(int[] data); x4 hO$3o
} `]{Psc6_=
,`)OEI|1d
public static void swap(int[] data, int i, int j) { kfK[u/<i
int temp = data; (9'be\
data = data[j]; Yb9cW\lr
data[j] = temp; vJThU$s-
} ?*+1~m>
} 7@a\* |K6