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。 rD
U6 5j
插入排序: fYQi#0drn
hCvLwZ?LF
package org.rut.util.algorithm.support; aLk2#1$g
1gy}E=noP
import org.rut.util.algorithm.SortUtil; cYwC,\uF
/** gL}Y5U+s
* @author treeroot Q.2nUT`
* @since 2006-2-2 ,Ho.O7H
* @version 1.0 I.0P7eA-
*/ ;$L!`"jn
public class InsertSort implements SortUtil.Sort{ 7C?mD75j
ODvpMt:+
/* (non-Javadoc) zcWxyLifl0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "gikX/Co=
*/ D:vUy*
public void sort(int[] data) { lvJ{=~u
int temp; I+d(r"N1
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); s&`XK$p
} hG;=ci3EE
} y'O{8Q8T
} 8U:dgXz
EbYH?hPo
} O#5( U.E
^?]H$e
冒泡排序: <$6'Mzf
{BCjVmY
package org.rut.util.algorithm.support; Heif FJn
Y9L6W+=T
import org.rut.util.algorithm.SortUtil; N_k6UA9
UR2)e{RXg
/** A^@ <+?
* @author treeroot k Q(y^t W
* @since 2006-2-2 )$4DH:WN
* @version 1.0 ]a |;G
*/ 7c]Ai
public class BubbleSort implements SortUtil.Sort{ U@5Z9/n{
UYrzsUjg&
/* (non-Javadoc)
yi;t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N_Ld,J%g
*/ OwIy(ukTI
public void sort(int[] data) { N~J Eia%
int temp; 8si^HEQ8
for(int i=0;i for(int j=data.length-1;j>i;j--){ ~[y+B0I3
if(data[j] SortUtil.swap(data,j,j-1); de47O
} *>$)#?t
} &p4<@k\L
} AX RNV
}
G5f57F
_:p_#3s$
} }Y ];ccT
tRBK1h
选择排序: l'%R^
^|;4/=bbs
package org.rut.util.algorithm.support; '0$[Ujc
{1DYXKe
import org.rut.util.algorithm.SortUtil; jF_I4H
",V5*1w
/** &E`Z_}~
* @author treeroot ~WXxVm*@
* @since 2006-2-2 }V;]c~Q/H
* @version 1.0 K.1yncS^
*/ X )s7_
public class SelectionSort implements SortUtil.Sort { *Y0,d`
nnl9I4-O
/* O~'yP@&`
* (non-Javadoc) 2vQ^519
* $QBUnLOek&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z35Rjhj9
*/ yP4.Z9
public void sort(int[] data) { \U>Kn_7m
int temp; E"&9FxS]^
for (int i = 0; i < data.length; i++) { PuCA
@qY
int lowIndex = i; 8~#Q *
for (int j = data.length - 1; j > i; j--) { mxA )r5sx
if (data[j] < data[lowIndex]) { %\&dFwb
lowIndex = j; wx5*!^&j
} }c5`~ LLK
} rXPx*/C
SortUtil.swap(data,i,lowIndex); VVl-cU
} NWK_(=n
} ,x.)L=Cx8
g^UWf <xp
} S]=Vr%irX
NYvj?>[y
Shell排序: 82!GM.b
):ZumG#o
package org.rut.util.algorithm.support; oz@6%3+
2<@!m@
import org.rut.util.algorithm.SortUtil; Y{tuaBzD
as!j 0j%
/** >{Z=cv/6o
* @author treeroot *S_Iza #&x
* @since 2006-2-2 y<d#sv(s
* @version 1.0 Asu"#sd
*/ Lo9?,^S
public class ShellSort implements SortUtil.Sort{ P<x
<U pjAuG8
/* (non-Javadoc) }h6z&:qA[?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Yg?{x@
*/ yo?Q%w'Nh
public void sort(int[] data) { Ps\^OJR
for(int i=data.length/2;i>2;i/=2){ t&]Mt7
for(int j=0;j insertSort(data,j,i); E/']M~Q
} 6J+ZeBk??
} 9(j!#`O7&
insertSort(data,0,1); 0 %+k>(@R
} :%MWbnVSC,
wwn}enEz,x
/** eCd?.e0@j
* @param data D/UGN+
* @param j G3?z.5,Q
* @param i
#sZes
*/ oyw1N;K
private void insertSort(int[] data, int start, int inc) { &[5az/Hj*
int temp; L{p-'V
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ht9b=1wd%s
} H]X)@n>
} EPy/6-5b
} hGV/P94
Q#KjX;No
} 4/>={4Y9
lej{VcG
快速排序: 0{F.DDiNT
;xwQzu%M>5
package org.rut.util.algorithm.support; {H2i+"cF
Y\sjm]_
import org.rut.util.algorithm.SortUtil; CV "Y40
HXI}f\6x
/** E: k?*l
* @author treeroot 6~>k]G
* @since 2006-2-2 yk{al SF
* @version 1.0 C<>.*wlp=
*/ `f]O
public class QuickSort implements SortUtil.Sort{ CI{x/ e^(
GNOC5 E$I
/* (non-Javadoc) O]lfs>>x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <@u6*]
*/ >k|[U[@
public void sort(int[] data) { e_V(G
quickSort(data,0,data.length-1); p;Kr664
} qE{S'XyM,
private void quickSort(int[] data,int i,int j){ ]XU#i#;c
int pivotIndex=(i+j)/2; (xL=X%6a
file://swap N{g=Pf?I}
SortUtil.swap(data,pivotIndex,j); zhE7+``g
=C|^C
int k=partition(data,i-1,j,data[j]); J~.kb k
SortUtil.swap(data,k,j); qa6~N3*
if((k-i)>1) quickSort(data,i,k-1); f6nltZ
if((j-k)>1) quickSort(data,k+1,j); 6! 'Xo:p
fZ$2bI=
} E"=$p$k
/** Sdp1h0E}7=
* @param data M.xEiHz
* @param i cqudF=q
* @param j rY}ofq7b
* @return p~IvkW>ln)
*/ d%bL_I)
private int partition(int[] data, int l, int r,int pivot) { tO7{g
do{ x]Ef}g
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); `2B+8,{%
SortUtil.swap(data,l,r); BxF
} dp_q:P4;B
while(l SortUtil.swap(data,l,r); ZV;yXLx|
return l; qv6]YPP
} ^iNR(cwgX
uk,f}Xc
} tPsU7bFk
odDt.gQXU
改进后的快速排序: DxHeZQ"LL
7f>n`nq?
package org.rut.util.algorithm.support; rtm28|0H'
4hIC&W~f
import org.rut.util.algorithm.SortUtil; \m&:J>^
r DuG["
/** Lrq&k40y
* @author treeroot V
EzIWNV
* @since 2006-2-2 o;fQ,rP%
* @version 1.0 ^-ZqS
*/ o/R-1\Dn
public class ImprovedQuickSort implements SortUtil.Sort { Wm 61
s/V[tEC*z
private static int MAX_STACK_SIZE=4096; t&_lpffv
private static int THRESHOLD=10; ^^#A9AM
/* (non-Javadoc) vs~*=d27Pf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o=ex{g( 3
*/ k:sh:G+=$d
public void sort(int[] data) { J3=jC5=J4
int[] stack=new int[MAX_STACK_SIZE]; R)/w
_EP}el
int top=-1; I$$!YMm.N
int pivot; i+}M#Y-O
int pivotIndex,l,r; ("Zi,3"+
-IE;5f#e
stack[++top]=0; d9s"y?8
stack[++top]=data.length-1; _
0-YsD
Y%3j>_\;
while(top>0){ D%zIm,bf
int j=stack[top--]; ",a
fv{C
int i=stack[top--]; PyYe>a;.
@y +Wl*:
pivotIndex=(i+j)/2; OR3TRa XD
pivot=data[pivotIndex]; A.n1|Q#
RW5T}
SortUtil.swap(data,pivotIndex,j); a^BD55d?
T~la,>p|}
file://partition c}A^0,"z>
l=i-1; AOpfByw
r=j; fOfp.`n
do{ FwyPmtBj
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ]l`DR4
=
SortUtil.swap(data,l,r); 2bqwnRT}
} VrpYBU
while(l SortUtil.swap(data,l,r); BtspnVBez
SortUtil.swap(data,l,j); q6q=,<T%S
<T['J]k%
if((l-i)>THRESHOLD){ q07>FW R
stack[++top]=i; nN[,$`JD,
stack[++top]=l-1; [yz;OoA:;
} m9/a!|fBE
if((j-l)>THRESHOLD){ Mvux=Ws
stack[++top]=l+1; H_9~gi
stack[++top]=j; tZJKB1#WbP
} 1*Z}M%
.$Y[>9
} B6BOy~B0
file://new InsertSort().sort(data); QFMS]
insertSort(data); ZEW`?6
} X:YxsZQ5Y
/** Z=#!FZ{
* @param data q;rU}hAzG0
*/ ^VA)vLj@
private void insertSort(int[] data) { _Q QO&0Z
int temp; c8(.bmvF
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); %BL +'&q
} 4WLB,<b}
} /SyiJCx0
} %lujme
@^%# ]x,:
} _b+3;Dy
Q,scjt[
归并排序: k
v b"n}
akR*|iK#b
package org.rut.util.algorithm.support; W*P/~U=
,\VNs'j
import org.rut.util.algorithm.SortUtil; 3 Tt8#B
.NjOaK)\
/**
'{),gV.
* @author treeroot \eN }V
* @since 2006-2-2 IlH*s/
* @version 1.0 .69{GM?
*/ by-B).7
public class MergeSort implements SortUtil.Sort{ b( wiJ&t
'i}Q R~pe
/* (non-Javadoc) 'E9\V\bi
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q WOd&=:
*/ G*ecM`Bl
public void sort(int[] data) { Yt&^i(
int[] temp=new int[data.length]; DwoO([&I
mergeSort(data,temp,0,data.length-1); {&xKSWNc
} ^s^X n QhE
nfc&.(6x<
private void mergeSort(int[] data,int[] temp,int l,int r){ Jg@PhN<9
int mid=(l+r)/2; ALhu\x>AY
if(l==r) return ; HH^eEh4g
mergeSort(data,temp,l,mid); xand%XNv
mergeSort(data,temp,mid+1,r); J5429Soo
for(int i=l;i<=r;i++){ }nkX-PG9
temp=data; )H)HR`
} }psJ'aiG*
int i1=l; ^hU7QxW
int i2=mid+1; RK|C* TCnl
for(int cur=l;cur<=r;cur++){ m!g
f!
if(i1==mid+1) lOql(ZH`w
data[cur]=temp[i2++]; Y6+nfh_
else if(i2>r) +g(QF
data[cur]=temp[i1++]; >xT8[
else if(temp[i1] data[cur]=temp[i1++]; -e30! A
else -|g~--@Q
data[cur]=temp[i2++]; 0C7x1:
} G"wy?
} 8dP^zjPj
yKi* 8N"e<
} ^dQ#\uy
$cnIsyKWY
改进后的归并排序: 60Y&)UR
gz8<&*2
package org.rut.util.algorithm.support; ;'*"(F=D6
@Kp2l<P
import org.rut.util.algorithm.SortUtil; kf';"
-r[l{ce
/** l9\
*G;
* @author treeroot t
7+ifSrz
* @since 2006-2-2 W]aX}>0
* @version 1.0 qiyX{J7Z
*/ lDU@Q(V#}<
public class ImprovedMergeSort implements SortUtil.Sort { .$s>b#m O
Osj/={7g
private static final int THRESHOLD = 10; ^?Y x{r~9
FVo_=O)
/* h,Nq:"}
* (non-Javadoc) ^ALR.N+<
* \|wUxijJ*,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <<iwJ
U%:
*/ &}+^*X
public void sort(int[] data) { caC-JcDXy
int[] temp=new int[data.length]; {wS)M
mergeSort(data,temp,0,data.length-1); {zmh0c;|
} #CcC& I
:c
i^I
U)\
private void mergeSort(int[] data, int[] temp, int l, int r) { 6
h%%?
int i, j, k; ,JVWn>s
int mid = (l + r) / 2; '0MH-M
if (l == r) %.nZ@';.
return; gOSFvH8FU
if ((mid - l) >= THRESHOLD) !7fL'
mergeSort(data, temp, l, mid); ji] H|
else na)-'
insertSort(data, l, mid - l + 1); a%igc^GS2
if ((r - mid) > THRESHOLD) 9`8D Ga
mergeSort(data, temp, mid + 1, r); wiE'6CM
else tOEY|
insertSort(data, mid + 1, r - mid); %fH&UFby
%7vjYvo>
for (i = l; i <= mid; i++) { Jp#Onl+d6
temp = data; @5tW*:s
} s/cclFji]
for (j = 1; j <= r - mid; j++) { =IC
cN|
temp[r - j + 1] = data[j + mid]; R/BW$4/E
} J.;{`U=:
int a = temp[l]; :@=;WB*0
int b = temp[r]; ijuIf9!
for (i = l, j = r, k = l; k <= r; k++) { >dU.ic?19
if (a < b) { z<h?WsL
data[k] = temp[i++]; k&M9Hn2
a = temp; _=*ph0nu
} else { O_bgrXg6x
data[k] = temp[j--]; 'Io2",~
M
b = temp[j]; *F)+- BB
} J4VyP["m
} 5 52U~t
} vk>EFm8l
=j&qat
/** !8ch&cr)o+
* @param data *ke9/hO1i
* @param l >x0)
* @param i ^W)h=49PN
*/ "u=U@1 ^
private void insertSort(int[] data, int start, int len) { b>_eD-
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); -z6{!
} e4rhB"qQdn
} }]K^b1Fs5
} Ee0}Xv
} `=FDNOwp
y'#i'0eeL
堆排序: PrwMR_-
-s5>GwZt
package org.rut.util.algorithm.support; 2"IsNbWV
~V`F5B
import org.rut.util.algorithm.SortUtil; N |nZf5{
898=9`7e
/** _W +
* @author treeroot Aav|N3
* @since 2006-2-2 ,2*x4Gycb
* @version 1.0 z!>
H^v
*/ Z}NMDb:t
public class HeapSort implements SortUtil.Sort{ Dc;zgLLL
78n`VmH~L
/* (non-Javadoc) WJJwhr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L2P#5B!S
*/ *s[bq;$
public void sort(int[] data) { 4Y!_tZ>
MaxHeap h=new MaxHeap(); ;G\RGU~
h.init(data); @9ndr$t
for(int i=0;i h.remove(); PD$@.pib
System.arraycopy(h.queue,1,data,0,data.length); /GUbc
} s^6"qhTa
xTV3U9 v
private static class MaxHeap{ R.rxpJ+kU
W{js9$oJ
void init(int[] data){ Z.x9SEe1t
this.queue=new int[data.length+1]; @Z{!T)#}j
for(int i=0;i queue[++size]=data; o%1dbbh
fixUp(size); q(iM=IeiN
} XeRbn
} `^#V1kRmH
=(%+S<}
private int size=0; KH_~DZU*5
#lo1GoL\
private int[] queue; tuWJj^
9EI Oa/*
public int get() { >ngP\&\
return queue[1]; LkA_M'G
} QT[yw6Z
cq-UVk"Gl
public void remove() { ujH ^ ML
SortUtil.swap(queue,1,size--);
,R8:Y*@P
fixDown(1); T#:n7$M|?A
} uU;]/
file://fixdown +,$ SZ O]
private void fixDown(int k) { D1g
.Fek5
int j; ),53(=/hl
while ((j = k << 1) <= size) { D @bnm
s
if (j < size %26amp;%26amp; queue[j] j++; i*9Bu;
if (queue[k]>queue[j]) file://不用交换 SZ )AO8&
break;
,]* MI"
SortUtil.swap(queue,j,k); ~wl4
k = j; NKJ+DD:'
} a
]~Yi.H
} p;k7\7
private void fixUp(int k) { <+iL@'SgF
while (k > 1) { c^a Dr
int j = k >> 1; @GrQ/F7
if (queue[j]>queue[k]) z3+7gp+I;
break; XzV:q!e-
SortUtil.swap(queue,j,k); nJ{vO{N
k = j; ehe;<A
} Q
q7+_,w
} ?r"QJa>
{=)g?!zC
} ;{% R[M'
x.ZW%P1
} $lYy `OuC
qo^PS
SortUtil: @}[yC['
{!G
package org.rut.util.algorithm; kl/eJN'S
Z#nPn>,q
import org.rut.util.algorithm.support.BubbleSort; [(65^Zl`
import org.rut.util.algorithm.support.HeapSort; 8kA2.pIk
import org.rut.util.algorithm.support.ImprovedMergeSort; ZT'VF~
import org.rut.util.algorithm.support.ImprovedQuickSort; 9S8>"w^R
import org.rut.util.algorithm.support.InsertSort; 2$OI(7b=
import org.rut.util.algorithm.support.MergeSort; d=~-8]%\
import org.rut.util.algorithm.support.QuickSort; ?^l{t4
import org.rut.util.algorithm.support.SelectionSort; rm"C|T4:V
import org.rut.util.algorithm.support.ShellSort; o{n)w6P{R,
Xe:gH.}
/** n +R3
* @author treeroot vC1D}=Fp
* @since 2006-2-2 FWu[{X;
* @version 1.0 :1/K$A)^{
*/ F
)|0U~
public class SortUtil { dd{pF\a
public final static int INSERT = 1; dY6A)[dAH'
public final static int BUBBLE = 2; ML9nfB^z!
public final static int SELECTION = 3; zVL"$ )
public final static int SHELL = 4; #Y9'n0 AL
public final static int QUICK = 5; S, g/2k*
public final static int IMPROVED_QUICK = 6; &Ub0o2+y
public final static int MERGE = 7; Nd] w I|>
public final static int IMPROVED_MERGE = 8; }/cMG/%
public final static int HEAP = 9; U0Q:sA U
:
U:>X6f
public static void sort(int[] data) { q[rBu9
sort(data, IMPROVED_QUICK); `~ ,
} tn@MOOPl
private static String[] name={ ^qgOgu
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" p(J,fus
}; (Z{&[h
Q;EQ8pL?"
private static Sort[] impl=new Sort[]{ a9<&|L <
new InsertSort(), :p6.v>s8
new BubbleSort(), Ta0Ln
new SelectionSort(), 4PsJs<u
new ShellSort(), RXZ}aX[h
new QuickSort(), |#x]FNg
new ImprovedQuickSort(), \8 ~`NF
new MergeSort(), ;uK">L[u'
new ImprovedMergeSort(), T+9#&
new HeapSort() b7nER]R
}; &Fxw19[G
'c")]{
public static String toString(int algorithm){ :% o32
return name[algorithm-1]; `_*NFv1_
} K@DK4{
v\;hI5WY
public static void sort(int[] data, int algorithm) { h4\j=Np
impl[algorithm-1].sort(data); O
F|3y~z
} )X
dpzWod
|`
+G7?)Y
public static interface Sort { >AsrPU[
public void sort(int[] data); 9~FB^3Nz_
} ecjjCt2S
9N?BWv}
public static void swap(int[] data, int i, int j) { DQ a0S7I
int temp = data; 8T2iqqG/1
data = data[j]; kS@6'5U
data[j] = temp; -55Pvg0ND
} 68pB*(i
} "N|gU;~W