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。 !C>'a:
插入排序: BIn7<.&
M!#[(:
package org.rut.util.algorithm.support; lDf:~
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import org.rut.util.algorithm.SortUtil; %I^y@2A4`
/** |K11Woii
* @author treeroot Y )](jU%o
* @since 2006-2-2 0XLoGQ=
* @version 1.0 #*v:.0%
*/ [7+dZL[
public class InsertSort implements SortUtil.Sort{ ,^m;[Dl7
\1H~u,a
/* (non-Javadoc) IS[&V&.n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -+H?0XN
*/ "l7))>lL
public void sort(int[] data) { dp=#|!jc
int temp; +}Q@{@5w
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]ff5MY 36
} YYi:d=0<SO
} mcm8|@Y{
} us2RW<Oxv
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} ?]Wg{\NC6
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冒泡排序: .0ExHcr
hL(zVkYI
package org.rut.util.algorithm.support; %.mHV7c)%
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import org.rut.util.algorithm.SortUtil; m{VC1BkZ
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/** V.H<KyaJ
* @author treeroot <`Q*I
Y
* @since 2006-2-2 n^+rxG6L
* @version 1.0 [KT1.5M[
*/ i3usZ{_r
public class BubbleSort implements SortUtil.Sort{ w}:&+B:
s<`54o ,
/* (non-Javadoc) nLjc.Z\Bl
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TQiDbgFo
*/ {klyVb
public void sort(int[] data) { z&W5@6")`
int temp; o0`|r+E\
for(int i=0;i for(int j=data.length-1;j>i;j--){ k,M%"FLQ
if(data[j] SortUtil.swap(data,j,j-1); =3R5m>6!/
} f !D~aJ
} 'du{ky
} |`c=`xK7'
} n>##,o|Vr#
NUjo5.7
} \Bg?QhA_D
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选择排序: j ?gscQ3
Q4!6|%n8v
package org.rut.util.algorithm.support; vb1Gz]~)>
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import org.rut.util.algorithm.SortUtil; 4&a,7uVer
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,
/** ye^l~
* @author treeroot j+-+<h/(
* @since 2006-2-2 }3xZ`vX[T
* @version 1.0 %yJ
$R2%*y
*/ 8Ug`2xS<_
public class SelectionSort implements SortUtil.Sort { +i1\],7
s"g"wh',
/* 0s+pcqOd^
* (non-Javadoc) Zyx92z9Y
* _WeN\F~^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cPL]WI0(
*/ hq[RU&\
public void sort(int[] data) { cN]]J
int temp; *]]C.t-cd
for (int i = 0; i < data.length; i++) { du0]LiHV
int lowIndex = i; 7Ew.6!s#n1
for (int j = data.length - 1; j > i; j--) { r1o_i;rg
if (data[j] < data[lowIndex]) { @2eV^eO9
lowIndex = j; {;[W'Lc
} yccF#zU
} \Tii
S
SortUtil.swap(data,i,lowIndex); 4Bc<
} B6hd*f
} 8/16<yZ
&:MfLDJ
} [Dou%\
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Shell排序: ]%8f-_fSy
;;cPt44s
package org.rut.util.algorithm.support; Y#[>j4<T
bo%v(
import org.rut.util.algorithm.SortUtil; oY$L
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/** <z+b88D
* @author treeroot M(+;AS?;
* @since 2006-2-2 g\O&gNq<)-
* @version 1.0 ;s(uaC3
*/ v@KP~kp
public class ShellSort implements SortUtil.Sort{ 5Rc^5Nv
48 | u{
/* (non-Javadoc) e_{!8u.+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XnCrxj
*/ Js("H
public void sort(int[] data) { |Vq&IfP
for(int i=data.length/2;i>2;i/=2){ 3$hbb6N%6.
for(int j=0;j insertSort(data,j,i); HGJfj*JH
} ""2g{!~r
} f} _d`?K
insertSort(data,0,1); =O?#>3A}
} v!b
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:(o6^%x
/** i9FtS7
* @param data 5PXo1"n8T
* @param j (b}}'
* @param i =Lyo]8>,X
*/ _s> ZY0
private void insertSort(int[] data, int start, int inc) { %C^%Oq_k
int temp; OYC\+
=
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 4EB&Zmg[K
} YEB@ p.
}
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} !R/-|Kjy
lx vRF93a.
} yavoGk
5?()o}VjAO
快速排序: 3-T}8VsiP
9*lkx#
package org.rut.util.algorithm.support; [=xJh?*P
on=I*?+R
import org.rut.util.algorithm.SortUtil; QaMB=wVr
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/** {g7[3WRy
* @author treeroot D]UqM<0Rz
* @since 2006-2-2 |y*-)t
* @version 1.0 *i>?YT
*/ $^1L|KgXp
public class QuickSort implements SortUtil.Sort{ KOQ9K
0D*uZ,oBEw
/* (non-Javadoc) e yLVu.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *xl930y
*/ 3n=`SLj/a
public void sort(int[] data) { <\If:
quickSort(data,0,data.length-1); uKBSv*AM
} Wveba)"$
private void quickSort(int[] data,int i,int j){ ydyGPZt
int pivotIndex=(i+j)/2; L`!M3c@u
file://swap v-J9N(y"
SortUtil.swap(data,pivotIndex,j); x`#|8
yQXHEB
int k=partition(data,i-1,j,data[j]); RXj6L~vs5_
SortUtil.swap(data,k,j); VZJ[h{ 6
if((k-i)>1) quickSort(data,i,k-1); ^S'#)H-8C3
if((j-k)>1) quickSort(data,k+1,j); Rt{`v<
W?B(Jsv
} aeBA`ry"B
/** vFL\O
* @param data ~GWn >
* @param i (Wm4JmX%
* @param j <%2A,
Vz"
* @return EpO5_T_
*/ t#0/_tD
private int partition(int[] data, int l, int r,int pivot) { dK45&JHoW^
do{ HcrI3v|6
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 8] BOq:
SortUtil.swap(data,l,r); 1;4]
HNI
} #''q :^EQ
while(l SortUtil.swap(data,l,r); rU{E}
return l; CX8tTbuFl
} ~
}<!ON;
TyCMZsvM,
} d/57;6I_
tv+H4/
改进后的快速排序: ThLnp@
<Y(lRM{
package org.rut.util.algorithm.support; V|h/a\P
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import org.rut.util.algorithm.SortUtil; >9S@:?^&q>
c
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/** Wy'H4Rg8
* @author treeroot +Y^_1
* @since 2006-2-2 (v\Cv)OS
* @version 1.0 \(C_t1
*/ ]/p)XHKo
public class ImprovedQuickSort implements SortUtil.Sort { osJ;"B36
r`THOj\cM
private static int MAX_STACK_SIZE=4096; JERWz~n}
private static int THRESHOLD=10; 3']yjj(gHr
/* (non-Javadoc) ^r7-|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J:YFy-[w(
*/ \y-Lt!}
public void sort(int[] data) { |Ki\Q3O1
int[] stack=new int[MAX_STACK_SIZE]; IkU:D"n7
}wJDHgt]-p
int top=-1; SX{6L(
int pivot; ;!CYp;_
int pivotIndex,l,r; ydNcbF%K
;(kU:b|j
stack[++top]=0; l+>&-lX'
stack[++top]=data.length-1; -1Luyuy/`
39W6"^q"o
while(top>0){ 6E!C xXUX
int j=stack[top--]; >?$+hZz<
int i=stack[top--]; 0nF>E@ j^[
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pivotIndex=(i+j)/2; O^D$ ~
]
pivot=data[pivotIndex]; 7DU"QeLeb
3zO'=gwJ
SortUtil.swap(data,pivotIndex,j); 0aMw
/;%[:x
file://partition ;)^eDJ<
l=i-1; *j,5TO-j
r=j; $Q[>v!!X
do{ aqjS 5!qh
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ~$0Qvyb>
SortUtil.swap(data,l,r); 0YsC@r47wL
} E47U &xL
while(l SortUtil.swap(data,l,r); Q1G?e,Q
SortUtil.swap(data,l,j); He4sP`&I
uLw$`ihw
if((l-i)>THRESHOLD){ w,\#)<boyb
stack[++top]=i; o,!r t1&0
stack[++top]=l-1; DcN s`2
} G_wzUk=L
if((j-l)>THRESHOLD){ t}E1NXW
stack[++top]=l+1; mW_<c,3D.
stack[++top]=j; 3
;F=EMz{
} sLV bFN`
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} ndkV(#wQS
file://new InsertSort().sort(data); PNSZ
j#
insertSort(data); Fejs9'cB
} ELp @/c=Wr
/** 2WjQ-mM#
* @param data eD0Rv0BV^
*/ lO-: [@
private void insertSort(int[] data) { =o5ZcC
int temp; -Bqn^ E
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~;Ga65_6_
} aDx{Q&
} "YlN_U
} U@<>2
7XE/bhe%S
} p7Yej(B
.[1"Med J
归并排序: yfS`g-j{~
jXO*_R
package org.rut.util.algorithm.support; -WIT0F4o;
1.]Py" @:
import org.rut.util.algorithm.SortUtil; $/%|0tQ
jUq^$+N
/** 2\ /(!n
* @author treeroot =N,Mmz%
* @since 2006-2-2 So*Q8`"-.
* @version 1.0 klG]PUzd
*/ 3S-n sMs.
public class MergeSort implements SortUtil.Sort{ I=VPw5"E
JJ3(0
+
/* (non-Javadoc) (m[]A&u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &L,zh{Mp
*/ 5N(/K. ^
public void sort(int[] data) { hlxZq
int[] temp=new int[data.length]; r"OVu~ND
mergeSort(data,temp,0,data.length-1); *yqEl
O
} [X.sCl|
-r_/b
private void mergeSort(int[] data,int[] temp,int l,int r){ &eQF[8 ,
int mid=(l+r)/2; C,R_`%b%
if(l==r) return ; 3u7^*$S
mergeSort(data,temp,l,mid); Oslbt8)U6
mergeSort(data,temp,mid+1,r); oB:tio4DE
for(int i=l;i<=r;i++){ 8$3G c"=
temp=data; m'$]lf;*
} O $uXQ.r
int i1=l; ^$aj,*Aj~
int i2=mid+1; . gK*Jpmx
for(int cur=l;cur<=r;cur++){ s@C@q(i6
if(i1==mid+1) oc,a
data[cur]=temp[i2++]; IZczHHEL`b
else if(i2>r) )p7WU?&I
data[cur]=temp[i1++]; _dY6Ip%
else if(temp[i1] data[cur]=temp[i1++]; 4r!8_$fN?G
else ]3<k>?
data[cur]=temp[i2++]; _f%Wk>A4
} lH/d#MT
} ~/J:p5?L
Mg]q^T.a
} n83,MV?-
}E+}\&
改进后的归并排序: %N@454enH
8V%(SV
package org.rut.util.algorithm.support; p%_#"dkC7
s5>=!yX
import org.rut.util.algorithm.SortUtil; `d,hP"jBc
-"iGcVV
/** 5QU7!jbI
* @author treeroot +2=N#LM
* @since 2006-2-2 a!}.l< )
* @version 1.0 wn[q?|1
*/ k/W$)b:Of`
public class ImprovedMergeSort implements SortUtil.Sort {
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dI<s)!
private static final int THRESHOLD = 10; Mt)`hR+2
m98j`t
/* c6cGl]FL
* (non-Javadoc) @2-Eky
* CRvUD.D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GcQO&oq|
*/ r*<)QP^B~
public void sort(int[] data) { ]?tsYXU j
int[] temp=new int[data.length]; <l(6$~(-u
mergeSort(data,temp,0,data.length-1); RuDn1h#u{
} OwrzD~
MK7S*N1
private void mergeSort(int[] data, int[] temp, int l, int r) { >(Jy=m?
int i, j, k; wxpE5v+f|
int mid = (l + r) / 2; S`TP#uzKu]
if (l == r) ymSGB`CP
return; A.m#wY8
if ((mid - l) >= THRESHOLD) .4A4\-Cqe
mergeSort(data, temp, l, mid);
.Ya]N+r*
else %B`MO-
insertSort(data, l, mid - l + 1); &GcWv+p
if ((r - mid) > THRESHOLD) TjGe8L:
mergeSort(data, temp, mid + 1, r); LX[J6YKR
else iy Zs:4jkc
insertSort(data, mid + 1, r - mid); vbzeabm
?J,hv'L]
for (i = l; i <= mid; i++) { .?9+1.`
temp = data; ?c0OrvM
} a02;Zl
for (j = 1; j <= r - mid; j++) { ?as)vYP
temp[r - j + 1] = data[j + mid]; KHKf+^u u
} x(h(a#,r
int a = temp[l]; D+d\<":
int b = temp[r]; +Ck F#H ~
for (i = l, j = r, k = l; k <= r; k++) { Qfr%BQV
if (a < b) { rxjMCMF
data[k] = temp[i++]; ^ Afq)26D
a = temp; |&WeXVH E
} else { 7. 9n
data[k] = temp[j--]; !EuU
@+
b = temp[j]; B\A2Vm`&
} JzMPLmgG/
} :\x53-&hO4
} ;LNFPo
Ath^UKO"
/** aPaGnP:^
* @param data 4A.ZMH
* @param l C,+6g/{
* @param i nJ |O,*`O
*/ T;X8T
private void insertSort(int[] data, int start, int len) { X64OX9:YF
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ]0.? 1s e
} n!~mdI&
} S/v+7oT
} JyWBLi;Z
} r 11:T3
aN{C86wx
堆排序: y-O#
+{7
1[o] u:m9U
package org.rut.util.algorithm.support; ?#ue:O1
+lmMBjDa
import org.rut.util.algorithm.SortUtil; u}hQF$a"
}2-<}m9}
/** P|YBCH
* @author treeroot z|[#6X6tT
* @since 2006-2-2 x&7%U
* @version 1.0 LS@[O])$'
*/ f~-81ctu
public class HeapSort implements SortUtil.Sort{ qN}kDT
K <7#;
/* (non-Javadoc) F;Ms6 "K
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9qkH~B7
*/ V`?2g_4N
public void sort(int[] data) { WJCEiH
MaxHeap h=new MaxHeap(); p*)RP2
h.init(data); !/, 6+2Ru
for(int i=0;i h.remove(); +c#:;&Gs
System.arraycopy(h.queue,1,data,0,data.length); ik02Q,J
} =(b;Cow
betN-n-
private static class MaxHeap{ ) \Mwv&k1
K[Bq,nPo
void init(int[] data){ pZp|F
this.queue=new int[data.length+1]; qW[p .jN
for(int i=0;i queue[++size]=data; ]C^D5(t/cd
fixUp(size); q1a}o%
} #<|5<U
} I`w1IIY?m
!4d6wp"
private int size=0; J;4x-R$W
L+2!Sc,>
private int[] queue;
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public int get() { 9.ZhkvR4A
return queue[1]; HubSmbS1
} C-4NiXa
pisjfNT`o
public void remove() { JViglO1\
SortUtil.swap(queue,1,size--); t]LCe\#
fixDown(1); |j53'>N[
} -Qx:-,.a
file://fixdown 50%
|9D0?Y
private void fixDown(int k) { !U.Xb6
int j; 6T{Zee
while ((j = k << 1) <= size) { Z#YkAQHv5
if (j < size %26amp;%26amp; queue[j] j++; ! )$
PD@
if (queue[k]>queue[j]) file://不用交换 V0+D{|thh6
break; |$@/
Z+
SortUtil.swap(queue,j,k); '0x`Oh&PK
k = j; &P{
} /l_$1<c
} 0.S].Y[
private void fixUp(int k) { |g]TWKc*
while (k > 1) { Q>f^*FyOw<
int j = k >> 1; !PUbaF-.6
if (queue[j]>queue[k]) ^p(t*%LM
break; e\i K
SortUtil.swap(queue,j,k); 5g
,u\`
k = j; {n}6
} +%(iGI{
} c7T9kV8hS
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} %J4]T35^2
f2Frb
} SvC|"-[mJ
F_;oZ
SortUtil: [tDUR
%
INRds
package org.rut.util.algorithm;
b<v \
)
?rJKr[`
import org.rut.util.algorithm.support.BubbleSort; Vr/UbgucJ
import org.rut.util.algorithm.support.HeapSort; r*]0PQ{?
import org.rut.util.algorithm.support.ImprovedMergeSort; X.<_TBos|
import org.rut.util.algorithm.support.ImprovedQuickSort; b2c% 0C
import org.rut.util.algorithm.support.InsertSort; Ry*NRP;
import org.rut.util.algorithm.support.MergeSort; -}|GkTM
import org.rut.util.algorithm.support.QuickSort; OD<0,r0f,
import org.rut.util.algorithm.support.SelectionSort; tdg.vYMDPC
import org.rut.util.algorithm.support.ShellSort; W Da;wt
I7b(fc-r
/** ZxkX\gl91
* @author treeroot ,t5X'sY L
* @since 2006-2-2 *9)7.}uY
* @version 1.0 'Y3>+7bI
*/ _.0c~\VA
public class SortUtil { aVvi_cau
public final static int INSERT = 1; p'1n'|$e
public final static int BUBBLE = 2; E 5}T_~-{
public final static int SELECTION = 3; @-~YQ@08`
public final static int SHELL = 4; en>d T
public final static int QUICK = 5; [^t"Hf
public final static int IMPROVED_QUICK = 6; *9e T#dH
public final static int MERGE = 7; AfW63;kH
public final static int IMPROVED_MERGE = 8; 8=ubMqr[
public final static int HEAP = 9; !J!zi
vco/h
public static void sort(int[] data) { I!lzOg4~
sort(data, IMPROVED_QUICK); SzkF-yRd
} s`Fv!
private static String[] name={ adtK$@Yeg
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" B'6^E#9
}; hk4f)z
?cdSZ'49[
private static Sort[] impl=new Sort[]{ ep<A d
new InsertSort(), vai.",b=n6
new BubbleSort(), 7t`<`BY^
new SelectionSort(), RGYky3mQK
new ShellSort(), HRi~TZ?\
new QuickSort(), 0$l=ME(
new ImprovedQuickSort(), `*PVFm>
new MergeSort(), */xI#G,O+
new ImprovedMergeSort(), e3YZ-w^W~h
new HeapSort() VHVU*6_w
}; LA$uD?YA
1Lwi?~!LI
public static String toString(int algorithm){ C3-l(N1O{
return name[algorithm-1]; 0X+Jj/-ge
} AoyU1MR(
!e6;@ *
public static void sort(int[] data, int algorithm) { 5:9Ay ?
impl[algorithm-1].sort(data); ^ cN-
} _m;cX!+~_
XG<J'3
public static interface Sort { `
_()R`=
public void sort(int[] data); q:#,b0|bv
} -_'M
*-
pr>Qu:
public static void swap(int[] data, int i, int j) { [,Ts;Hy6Q
int temp = data; |s|>46E
data = data[j]; AC ,$(E
data[j] = temp; w( `X P
} td4*+)'FY
} !JUXq