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。 o'^phlX
插入排序: WVkG2
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package org.rut.util.algorithm.support; x/_dW
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import org.rut.util.algorithm.SortUtil; <4$YO-:E
/** X#7}c5^Y
* @author treeroot v,*Q]r0m
* @since 2006-2-2 D+hB[*7Fs
* @version 1.0 #{~7G%GPY5
*/ |Cq8%
public class InsertSort implements SortUtil.Sort{ DUo0w f#D^
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/* (non-Javadoc) j88=f#<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3B -NYJa
*/ xfes_v""
public void sort(int[] data) { Ff&R0v
int temp; )O -cw7 >
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 26}u4W$
} FdM<;}6T
} g~|y$T
} R9q0,yQW
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} r
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冒泡排序: r8F{A6i N
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package org.rut.util.algorithm.support; b_ZNI0Hp@
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import org.rut.util.algorithm.SortUtil; t#{x?cF
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/** )5'rw<:="
* @author treeroot ]*a@*0=
* @since 2006-2-2 _ flgQ
* @version 1.0 MyqiBGTb
*/ XUf7yD
public class BubbleSort implements SortUtil.Sort{ mDlCt_h
J$#D:KaU:N
/* (non-Javadoc) qKA_A%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e6o/q)9#
*/ )kF2HF
public void sort(int[] data) { v10mDr
int temp; nrF!;:x
for(int i=0;i for(int j=data.length-1;j>i;j--){ D| [/>x
if(data[j] SortUtil.swap(data,j,j-1); rI *!"PL
} ~R'BU=!;F
} +R9%~Z.=
} Vv2{^!aZ
} e7lo!(>#
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} cNx
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选择排序: i'Wcf1I-=
t(wZiK}
package org.rut.util.algorithm.support; L%k67>
qT"drgpi3
import org.rut.util.algorithm.SortUtil; R/Tj^lM
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/** :wSJ-\'$
* @author treeroot y~x#pC*w
* @since 2006-2-2 |1lf(\T_
* @version 1.0 87+.pM|t%
*/ 0c`sb+?
public class SelectionSort implements SortUtil.Sort { fJvr+4i4k
219R&[cb
/* (I>HWRH
* (non-Javadoc) %-\FVKX
* Y'2-yB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F9F" F
*/ )CFk`57U
public void sort(int[] data) { +jv}\Jt
int temp; =obt"K%n
for (int i = 0; i < data.length; i++) { PIgGXNo
int lowIndex = i; 3,%nkW
for (int j = data.length - 1; j > i; j--) { U
7EHBW
if (data[j] < data[lowIndex]) { Bl=nj.g
lowIndex = j; ,n^TN{#
} -e &$,R>;
} D xe-XKNc.
SortUtil.swap(data,i,lowIndex); gHp'3SnS
} !NILpimi
} .mC~Ry+t
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} ful]OLV+
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Shell排序: BvSdp6z9Iv
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package org.rut.util.algorithm.support; ~K4k'
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import org.rut.util.algorithm.SortUtil; mgk64}K [n
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/** #8S [z5 `
* @author treeroot 2;dM:FHLhO
* @since 2006-2-2 7qW.h>%WE
* @version 1.0 ~o}moE/
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*/ 0@o;|N"i
public class ShellSort implements SortUtil.Sort{ <m~T>Ql1
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/* (non-Javadoc) @=02
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x&QNP
*/ /;zZnF\e
public void sort(int[] data) { un.G6| S
for(int i=data.length/2;i>2;i/=2){ =%Q\*xaR.W
for(int j=0;j insertSort(data,j,i); zNNzsT8na
} C<zx'lw!
} s'R~r
insertSort(data,0,1); zf M<x,XdY
} (K^YD K
nrxjN(9V%+
/** #&;m<%
* @param data E6,`Ld;c[
* @param j zG&WWc`K
* @param i [6Uud iw
*/ rd|@*^k
private void insertSort(int[] data, int start, int inc) { bv .EM
int temp; Rh!L'?C
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); emGV]A%nss
} xmCm3ekmpC
} $ iX^p4v
} U;x99Go:
Z)C:]}Ex
} HY*l 4QK
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快速排序: k/$Ja;
SS>:Sw
package org.rut.util.algorithm.support; oA(. vr
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import org.rut.util.algorithm.SortUtil; :7HVBH
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/** =YS!soO
* @author treeroot ]hCWe0F
* @since 2006-2-2
s98: *o3
* @version 1.0 D<+ bzC
*/ E#yCcC!wMY
public class QuickSort implements SortUtil.Sort{ sV9{4T~#|
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/* (non-Javadoc) jEC'l]l
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TKj/6Jz|
*/ e_fg s>o`(
public void sort(int[] data) { },?-$eyX
quickSort(data,0,data.length-1); AlPL;^Y_l
} O^QR;<t'
private void quickSort(int[] data,int i,int j){ P^'>dOI0w
int pivotIndex=(i+j)/2; \#h})`
file://swap `DU'wB
SortUtil.swap(data,pivotIndex,j); Bbn832iMUY
SL?%/$2g=O
int k=partition(data,i-1,j,data[j]); }'@tA")-)
SortUtil.swap(data,k,j); VWnu#_(
if((k-i)>1) quickSort(data,i,k-1); B`'}&6jr.
if((j-k)>1) quickSort(data,k+1,j); T>AI0R3
?M*C*/R
} 6/p]jN
/** &F@tmM~
* @param data '=@-aVp
* @param i e#76h;
* @param j -jcrXskb&N
* @return :Su 5
*/ OF<[Nh\.
private int partition(int[] data, int l, int r,int pivot) { mI_ 6f~
do{ ;ph+ZV
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); DYy@t^sC
SortUtil.swap(data,l,r); `Z;B^Y0
} ,d/CU
while(l SortUtil.swap(data,l,r); HQ-N!pf9
return l; ];YglHH
} "GIg|3
[4V|UvKz
} VNOK>+
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改进后的快速排序: )[^:]}%r
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package org.rut.util.algorithm.support; (+]Ig> t
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import org.rut.util.algorithm.SortUtil; #=)?s
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/** vl#V-UW$4P
* @author treeroot DbPBgD>Q
* @since 2006-2-2 r&j+; JM5
* @version 1.0 iG;d0>Sp
*/ l:k E^ =6
public class ImprovedQuickSort implements SortUtil.Sort { J\Oc]gi\L
L@^!(
private static int MAX_STACK_SIZE=4096; <9MQ
private static int THRESHOLD=10; n]6w)wE(
/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f6/\JVi)-
*/ s525`Q;
public void sort(int[] data) { Ed ?Yk* 4
int[] stack=new int[MAX_STACK_SIZE]; |?pYJkrYO
NZi'eZ{^`
int top=-1; \a~;8):q=i
int pivot; | eVTxeq
int pivotIndex,l,r; lN]X2 4t
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stack[++top]=0; FHnHhB [
stack[++top]=data.length-1; SbQ{ >
k^vmRe<lk
while(top>0){ OM.(g%2
int j=stack[top--]; 1nX68fS.9
int i=stack[top--]; SquqaX+<
Z)Xq!]~/g
pivotIndex=(i+j)/2; *SAcH_I2$>
pivot=data[pivotIndex]; 2-B8>-
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SortUtil.swap(data,pivotIndex,j); 4=#QN
w-q=.RSTn=
file://partition CsQ}P)
l=i-1; 'E4(!H,k
r=j; \[hrG?A
do{ #f jX|b
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); F0o18k_"
SortUtil.swap(data,l,r); Ov{B-zCA
} J3!k*"P
while(l SortUtil.swap(data,l,r); G@l|u
SortUtil.swap(data,l,j); vr]dRStr
5"Xo R)
if((l-i)>THRESHOLD){ 6b1 Uj<
stack[++top]=i; rqG6Ll`=+
stack[++top]=l-1; 7zOvoQ}
} U]R|ej
if((j-l)>THRESHOLD){
_ jM6ej<
stack[++top]=l+1; fSb@7L
stack[++top]=j; K`AW?p^$Y
} ^,\se9=(
X#\P.$
} 0^tJX1L
file://new InsertSort().sort(data); I?xhak1)lu
insertSort(data); H6+st`{
} BRQ5
/** f<xt3
* @param data @o-evH;G
*/ ~NJL S-
private void insertSort(int[] data) { hJtghG6v
int temp; #IciNCIrG
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Yv|bUZ@
} hc~#l #
} +\]S<T*;
} D/!G]hx
:O2v0Kx
} l=.InSuLT
DyV[+P
归并排序: (j\UoKLRt
TTjjyZ@
package org.rut.util.algorithm.support; _M[[o5{
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import org.rut.util.algorithm.SortUtil; r;s3(@[,@
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/** WW
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* @author treeroot "Mu$3w
* @since 2006-2-2 .cnw?EI
* @version 1.0 jq]\oY8y
*/ ]{ l
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public class MergeSort implements SortUtil.Sort{ ;Q%19f3,6
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/* (non-Javadoc) pRfHbPV?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =dJEcC_J
*/ Mdq'> <ajL
public void sort(int[] data) { N_~Wu
int[] temp=new int[data.length]; $[9V'K
mergeSort(data,temp,0,data.length-1); Nl>b'G96
} 7B> cmi
1F%*k &R
private void mergeSort(int[] data,int[] temp,int l,int r){ 9hi(P*%q
int mid=(l+r)/2; |kRx[UL
if(l==r) return ; S}oF7;'Ga
mergeSort(data,temp,l,mid); r_2VExk
mergeSort(data,temp,mid+1,r); bu!<0AP"N+
for(int i=l;i<=r;i++){ [ZpG+VAJ8
temp=data; a~+WL
} zK]%qv]
int i1=l; +vY`?k`
int i2=mid+1; jYssz4)tp
for(int cur=l;cur<=r;cur++){ F_
lj>;}a5
if(i1==mid+1) U8 @*I>vA
data[cur]=temp[i2++]; tw^.(m5d
else if(i2>r) A-NC,3
data[cur]=temp[i1++]; \y+F!;IxL
else if(temp[i1] data[cur]=temp[i1++]; BB}iBf I'
else s#CEhb
data[cur]=temp[i2++]; !haXO
} 5|H(N}S_
} t@mw f3,
c;fyUi
} (3HgI
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改进后的归并排序: ~V)VGGOL$v
mCP +7q7
package org.rut.util.algorithm.support; +(hwe
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import org.rut.util.algorithm.SortUtil; - cC(d$y
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/** _p^ "!
* @author treeroot w\[*_wQp
* @since 2006-2-2 sJ*U Fm{
* @version 1.0 vG=$UUh@~
*/ &Fr68HNmj
public class ImprovedMergeSort implements SortUtil.Sort { PbC>v
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private static final int THRESHOLD = 10; YV+dUvz
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/* )1'_g4
* (non-Javadoc) t,Rn
* Nd!=3W5?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :BiR6>1:
*/ iV$75Atk
public void sort(int[] data) { Cl){sP=8W
int[] temp=new int[data.length]; :re(khZq#
mergeSort(data,temp,0,data.length-1); (B4A$t
} >LZ)<-Mk
"PP0PL^5F
private void mergeSort(int[] data, int[] temp, int l, int r) { hndRgCo
int i, j, k; k:yu2dQh
int mid = (l + r) / 2; S~`AnX3!
if (l == r) mAERZ<I
return; T[II;[EiE
if ((mid - l) >= THRESHOLD) :9< r(22
mergeSort(data, temp, l, mid); P_Ja?)GT
else Tm,L?Jh
insertSort(data, l, mid - l + 1); Q>Q}/{8!
if ((r - mid) > THRESHOLD) "uNxKLDB
mergeSort(data, temp, mid + 1, r); ^qy-el
else _A~gqOe
insertSort(data, mid + 1, r - mid); E^ti!4{<
\?IwR]@y
for (i = l; i <= mid; i++) { g#&##f
temp = data; {N`<e>A]{
} +=xRr?F
for (j = 1; j <= r - mid; j++) { 69w"$Vk
temp[r - j + 1] = data[j + mid]; [wxI
X
} ;'+cT.cmH
int a = temp[l]; L*Cf&c`8r
int b = temp[r]; qf {B
for (i = l, j = r, k = l; k <= r; k++) { Z-V%lRQ=b
if (a < b) { LR.+CxQ
data[k] = temp[i++]; u 9TlXn
a = temp; -C]a2
} else { ~#Mx&mZ
data[k] = temp[j--]; U~c;W@T
b = temp[j]; xL"o)]a=
} nlnJJM&J$
} S}I=i>QB
} hS/'b$#
!~kzxY
/** $S ("-3
* @param data f@g
* @param l n#,l&Bx
* @param i CplRnKra
*/ CR=MjmH
private void insertSort(int[] data, int start, int len) { \C.@ @4{
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); &g {_.n,
} W.<<azi
} ~;s)0M
} 00TdX|V`
} 6S&YL
|`/uS;O
堆排序: 8hA=$}y&x
ApBThW*E
package org.rut.util.algorithm.support; ?V)6`St#C
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import org.rut.util.algorithm.SortUtil; p+?WhxG)
xo+z[OIlF
/** 1MSu])
W
* @author treeroot G-<~I#k
* @since 2006-2-2 aC`
c^'5
* @version 1.0 vRs5-T
*/ m$g^On
public class HeapSort implements SortUtil.Sort{ C_)>VPD
<ZdNPcT<s
/* (non-Javadoc) }aIfIJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c,ek]dTj
*/
O,v$'r W
public void sort(int[] data) { 0&~u0B{
MaxHeap h=new MaxHeap(); >c eU!=>
h.init(data); 3!W&J
for(int i=0;i h.remove(); RkM! BcB
System.arraycopy(h.queue,1,data,0,data.length); bq]a8tSB
} {xH@8T$DX
I-"{m/PEdg
private static class MaxHeap{ n5/Q)*e0'#
Y6a|\K|
void init(int[] data){ J_$~OEC~
this.queue=new int[data.length+1]; bS<p dOX_
for(int i=0;i queue[++size]=data; 0rUf'S
?K
fixUp(size); @9a=D<'>
} s,x]zG"
} A@r,A?(
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private int size=0; !HYqM(|{.
xcA:Q`c.{
private int[] queue; D$;/
l}s?
2D"/k'iA
public int get() { O/nS,Ux
return queue[1]; nt6"}vO
} !NjE5USi
Y}Uw7\e
public void remove() { x
,W+:l9~s
SortUtil.swap(queue,1,size--); sn%fE
fixDown(1); kF .b)
} dPId=
w)
file://fixdown |zKcL3*
private void fixDown(int k) { 5$X{{j2
int j; %#~Wk|8} Q
while ((j = k << 1) <= size) { 7&1: ]{_
if (j < size %26amp;%26amp; queue[j] j++; 5JXLfYTUI
if (queue[k]>queue[j]) file://不用交换 (WvA9s{/
break; aT #|mk=\
SortUtil.swap(queue,j,k); 0M?}S~p]
k = j; ><~hOK?v
} I5]zOKlVR
} yk/XfwQ5
private void fixUp(int k) { \\JXY*DA:+
while (k > 1) { T~>:8i
int j = k >> 1; {'%=tJ[YX
if (queue[j]>queue[k]) *VB*/^6A
break; ix;8S=eP~{
SortUtil.swap(queue,j,k); ^(R
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k = j; |Oe6OCPf
} ,PYe7c
} g:yK/1@Hk}
9 pn1d.
} V5+a[`]
&PX'=UT
} 0'uj*Y{L
p
WH u[Fu
SortUtil: .anL}OA_q
uHYI :(O
package org.rut.util.algorithm; q`hg@uwA{`
wlJ1,)n^2
import org.rut.util.algorithm.support.BubbleSort; b%(0AL
import org.rut.util.algorithm.support.HeapSort; <>TBM^
import org.rut.util.algorithm.support.ImprovedMergeSort; yyc&'J
import org.rut.util.algorithm.support.ImprovedQuickSort; KMV!Hqkk
import org.rut.util.algorithm.support.InsertSort; O9Aooe4W=
import org.rut.util.algorithm.support.MergeSort; \=)h6AG
import org.rut.util.algorithm.support.QuickSort; r+Y1m\
import org.rut.util.algorithm.support.SelectionSort; x{E[qH_1Fm
import org.rut.util.algorithm.support.ShellSort; ln5On_Wm
^_uzr}LE`
/** =RA6 p
* @author treeroot 7+"X^$
* @since 2006-2-2 U N/.T
* @version 1.0 ) =[Tgh
*/ tR3hbL$W
public class SortUtil { kVY@q&p
public final static int INSERT = 1; C;` fOCz^
public final static int BUBBLE = 2; Hg4Ut/0
public final static int SELECTION = 3; @)B_e*6>'
public final static int SHELL = 4; "<n{/x(
public final static int QUICK = 5; DWAU8>c+
public final static int IMPROVED_QUICK = 6; @,]v'l!u
public final static int MERGE = 7; [>E0(S]
public final static int IMPROVED_MERGE = 8; `*]r.u0
public final static int HEAP = 9; _~!,x.Dbp
^:BRbp37i
public static void sort(int[] data) { \MU4"sXw
sort(data, IMPROVED_QUICK); PA E)3
} L<:ya
private static String[] name={ dx^3(#B
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" yAOC<d9 E
}; [LCi,
(&S v$L@
private static Sort[] impl=new Sort[]{ I ;_.tG
new InsertSort(), Nn$$yUkMX
new BubbleSort(), 08Q:1 '
new SelectionSort(), -?uwlpm#
new ShellSort(), 5Ai
Yx}
new QuickSort(), IH5thL@D
new ImprovedQuickSort(), B?jF1F!9
new MergeSort(), `f s[C
new ImprovedMergeSort(), k(MQ:9'|
new HeapSort() &>-Cz%IV
}; q~qig,$Y
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public static String toString(int algorithm){ -Je+7#P1
return name[algorithm-1]; rP'oUV_
} &+\wYa,
I
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public static void sort(int[] data, int algorithm) { o}T]f(>}
impl[algorithm-1].sort(data); IAfYlS#<yD
} , Le_PJY)
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public static interface Sort { HBt?cA '
public void sort(int[] data); &5B+8>
} "783F:mPh
C oaqi`v4T
public static void swap(int[] data, int i, int j) { 2dC)%]aLme
int temp = data; |k8;[+
data = data[j]; E_++yK^=
data[j] = temp; A#T;Gi
} ^C(AMT
} _7Z$"