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??cjiA@
插入排序: -G9|n#zCU
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package org.rut.util.algorithm.support; rH&G<o&,
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import org.rut.util.algorithm.SortUtil; f/}
/** o(*F])d;
* @author treeroot "PMQyzl
* @since 2006-2-2 *8bK')W
* @version 1.0 1dFa@<5
*/ )MZC>:
public class InsertSort implements SortUtil.Sort{ GWsd| kxU
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/* (non-Javadoc) B5ea(j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;QBh;jg4
*/ r}_lxr
public void sort(int[] data) { L@RIZu>ZW+
int temp; J8?2R^;{
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); a+`D'?z
} vE%s,E,
} h >-'-Hx+
} w(U:U-MNe
03=5Nof1
} cWMUj K/N
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冒泡排序: +r]zs^'
^s&W>hTX:
package org.rut.util.algorithm.support; ,:)`+v<
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import org.rut.util.algorithm.SortUtil; #(KDjnP[
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/** Qd]we$G
* @author treeroot u.,Q4u|!
* @since 2006-2-2 N\NyXh$
* @version 1.0 ;),"M{"v
*/ =wVJ%
public class BubbleSort implements SortUtil.Sort{ aS84n.?vq
!m;H@KR{
/* (non-Javadoc) wi_'iv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d%_OT0Ei
*/ s@8w-]"
public void sort(int[] data) { (W[V?!1
int temp; :nA.j"@
for(int i=0;i for(int j=data.length-1;j>i;j--){ OhVs#^
if(data[j] SortUtil.swap(data,j,j-1); nhT-Ido
} d\]Yk]r
} 6gH{R$7L=
} *JX;|S
} e}hmS 1>H
~q+hV+fa>
} g%nl!dgS
*/^QH@ P
选择排序: C0jj(ku&
a5YIUVCv
package org.rut.util.algorithm.support; mN|r)4{`
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import org.rut.util.algorithm.SortUtil; Djq!P
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/** #P<N^[m
* @author treeroot n/~A`%E@
* @since 2006-2-2 \C,p
WW
* @version 1.0 c(#;_Ve2P
*/ Fqy\CMC
public class SelectionSort implements SortUtil.Sort { 8[vc?+>&
"]K>j'^Zs<
/* ]:>,A@7
* (non-Javadoc) d?wc*N3
* f| _u7"OX
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d.UQW
yLG
*/ L){iA-k;Ec
public void sort(int[] data) { R;,g1m|]
int temp; 1#IlWEg
for (int i = 0; i < data.length; i++) { U_x )#,4
int lowIndex = i; k:jSbbQ
for (int j = data.length - 1; j > i; j--) { b 5yW_Ozdh
if (data[j] < data[lowIndex]) { xvl3vAN9
lowIndex = j; Q></`QWpoB
} h8Yx#4
} }\J2?Et{
SortUtil.swap(data,i,lowIndex); ^8.]d~j
} _XCOSomL`
} V"c
6Kdtd
!;?+>R)h
} n]E?3UGD@W
-py@DzK
Shell排序: rj(T~d4
'%q$`KDb
package org.rut.util.algorithm.support; 4R18A=X
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import org.rut.util.algorithm.SortUtil; hzk cP
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/** /p8dZ+X
* @author treeroot n{6G"t:^l
* @since 2006-2-2 uj :%#u
* @version 1.0 0PlO(",a
*/ '7XIhN9
public class ShellSort implements SortUtil.Sort{ d_IAs
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/* (non-Javadoc) ,7<f9 EVY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [VE8V-
*/ 7(pF[LCF
public void sort(int[] data) { V4_=<W
for(int i=data.length/2;i>2;i/=2){ |`.([2
for(int j=0;j insertSort(data,j,i); )jt #=9ZQ
} y&V@^"`
} |UX(+;n
insertSort(data,0,1); Uu `9"
} c@8 93<_
,^C--tgZJg
/** thI
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* @param data \--8lH -K
* @param j 'IwNTM
* @param i [n:<8ho
*/ #`)(e JF
private void insertSort(int[] data, int start, int inc) { , GP?amh
int temp; ~^1 {B\I
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); LU={")TdQ
} tNbN7yI
} z*a:L} $
} s+<Yg$)
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} xCc[#0R{
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快速排序: Zcx`SC-0
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package org.rut.util.algorithm.support; sM `DL
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import org.rut.util.algorithm.SortUtil; oY H^_V
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/**
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* @author treeroot ZzJ?L4J5v
* @since 2006-2-2 62ws/8d6f
* @version 1.0 D=-SO
+
*/ rE.;g^4p
public class QuickSort implements SortUtil.Sort{ Yfzl%wc
t*1fLumXR
/* (non-Javadoc) ).`1+b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #."-#"0
*/ $Avjnm
public void sort(int[] data) { BHU6t<G
quickSort(data,0,data.length-1); e#$]Y?,
} l3ko?k
private void quickSort(int[] data,int i,int j){ a%/9v"}
int pivotIndex=(i+j)/2; wsI`fO^A8
file://swap 5YeM%%-S
SortUtil.swap(data,pivotIndex,j); 'h|DO/X~L
"Q@ronP(~
int k=partition(data,i-1,j,data[j]); +M\`#i\g>
SortUtil.swap(data,k,j); 5m&9"T. w
if((k-i)>1) quickSort(data,i,k-1); [+n*~
if((j-k)>1) quickSort(data,k+1,j); MOQ*]fV:
R{<kW9!
} "n(hfz0y%
/** OEA&~4&{7
* @param data lrlgz[
* @param i :LF?
* @param j XDOY`N^L
* @return r!_-"~`7E
*/ 3no%E03p
private int partition(int[] data, int l, int r,int pivot) { 5q3JI
do{ vWzm@
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); iT3BF"ZqBO
SortUtil.swap(data,l,r); .,<1%-R34q
} M ?Y;a5{
while(l SortUtil.swap(data,l,r); [1g8*j~L
return l; {6|38$Rl
} )~)J?l3{
=Y{(%sn
} }~e8e
B+P(M!m3
改进后的快速排序: e^6)Zz1\
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7Oc
package org.rut.util.algorithm.support; :~"CuB/
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import org.rut.util.algorithm.SortUtil; t3 8m'J :>
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/** dk[!V1x4\
* @author treeroot i1ixi\P{0
* @since 2006-2-2 2b}t,&bv?
* @version 1.0 (-UYB9s
*/ e2 4WW^S
public class ImprovedQuickSort implements SortUtil.Sort { 9UdM`v)(
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private static int MAX_STACK_SIZE=4096; !Q2d(H>
private static int THRESHOLD=10; kJ'[K!r
/* (non-Javadoc) JFcLv=U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !#], hok8X
*/ sEp"D+f
public void sort(int[] data) { tU }h~&M
int[] stack=new int[MAX_STACK_SIZE]; jl4rbzse
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int top=-1; Z3"%`*Tmq-
int pivot; GFj{K
int pivotIndex,l,r; orzZ{87
5;tD"/nz
stack[++top]=0; $p1(He0 2
stack[++top]=data.length-1; zqim R#u
u@Ih GME
while(top>0){ dU&a{$ku[
int j=stack[top--]; {2O1"|s ,
int i=stack[top--]; Ci@o|Y }tP
f%is~e~wc
pivotIndex=(i+j)/2; pNG:0
pivot=data[pivotIndex]; ,Xu-@br{
faEt6
SortUtil.swap(data,pivotIndex,j); so,t
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file://partition Rvqq.I8aC
l=i-1; 9P1OP Xv*p
r=j; v,FU^f-'
do{ k :(SCHf
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); \\iQEy<i
SortUtil.swap(data,l,r); CuaVb1r
} &|s0P
while(l SortUtil.swap(data,l,r); nD_GL
SortUtil.swap(data,l,j); |B?cVc0
aB_F9;IR
if((l-i)>THRESHOLD){ l.q&D< _
stack[++top]=i; !EvAB+`jLI
stack[++top]=l-1; AHD=<7Rs
} Tm~" IB*
if((j-l)>THRESHOLD){ JA %J$d
stack[++top]=l+1; TJ10s%,V
stack[++top]=j; sQYkQ81
} &fDIQISC
9&$y}Y
} y*4=c_Z
file://new InsertSort().sort(data); C'>|J9~Gz
insertSort(data); =mO vs
} %v=*Wb\3|
/** _~'=C#XI)
* @param data u}#(.)a:
*/ prWk2_D;*
private void insertSort(int[] data) { ]Z>}6!
int temp; 8V~k5#&Ow
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); k9<;woOBO
} t;|@o\
} b_$4V3TA
} B7VH<;Z
Uf1!qP/H?
} zykT*V
V><,UI=,n
归并排序: |-fgj'
.UQzPnK
package org.rut.util.algorithm.support; Lz
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ZJnYIK
import org.rut.util.algorithm.SortUtil; a4mn*,
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/** TEP,Dq
* @author treeroot U&g@.,Y#
* @since 2006-2-2 )cX*I gO
* @version 1.0 4n#M
*/ G'nmllB`]
public class MergeSort implements SortUtil.Sort{ ]tim,7s
)\1@V+!E%
/* (non-Javadoc) B?OFe'*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /74QMx?
*/ )!3V/`I
public void sort(int[] data) { hXcyoZ8
int[] temp=new int[data.length]; #QS`_TlKk
mergeSort(data,temp,0,data.length-1); OsTc5K.U~
} ]vz%iv_
%2}-2}[>
private void mergeSort(int[] data,int[] temp,int l,int r){ e+=y*OmQ
int mid=(l+r)/2; |5X^u+_
if(l==r) return ; Y@NNrGDkT*
mergeSort(data,temp,l,mid); 2% MC Yn
mergeSort(data,temp,mid+1,r); %h hfU6[
for(int i=l;i<=r;i++){ lz/8
temp=data; >Ifr [
} ZAW^/bo<
int i1=l; FDv<\2+ c
int i2=mid+1; On8v//=&
for(int cur=l;cur<=r;cur++){ Ozw.siD
if(i1==mid+1) '<gI8W</
data[cur]=temp[i2++]; mbKZJ{|4s
else if(i2>r) p99]
data[cur]=temp[i1++]; ^NLmgwQ
else if(temp[i1] data[cur]=temp[i1++]; Je';9(ZK
else -5)H<dAQZ
data[cur]=temp[i2++]; rbul8(1h
} `oAW7q)~
} L s
G\OG
d}OTO10
} l.(v^3:X
\9.bt:k@OT
改进后的归并排序: a`wc\T^
C/_ZUF(V
package org.rut.util.algorithm.support; XP`Nf)3{Yd
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import org.rut.util.algorithm.SortUtil; %9
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/** CYt?,qk-r
* @author treeroot M
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ac
* @since 2006-2-2 bAdn &
* @version 1.0 #`~C)=-
*/ Zj_b>O-V
public class ImprovedMergeSort implements SortUtil.Sort { "N;`1ce
XUrXnz|>
private static final int THRESHOLD = 10; .[YuRLGz
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/* 1&\0:vA^Y
* (non-Javadoc) %Wg'i!?cB
* sm9k/(-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ] ;KJ6
*/ 3W V"U
public void sort(int[] data) { -6Z\qxKqZ
int[] temp=new int[data.length]; <xup'n^7C
mergeSort(data,temp,0,data.length-1);
#+JG(^%B
} 9q)Kfz
rDl*d`He!
private void mergeSort(int[] data, int[] temp, int l, int r) { "<6G6?sz
int i, j, k; S&e0u%8mc
int mid = (l + r) / 2; .n TwPrG
if (l == r) ky8_UnaO
return; W=lyIb{?^0
if ((mid - l) >= THRESHOLD) \1d( 9jR
mergeSort(data, temp, l, mid); M\vwI"
else a@8v^G
insertSort(data, l, mid - l + 1); $Y;U[_l#
if ((r - mid) > THRESHOLD)
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mergeSort(data, temp, mid + 1, r); -N6f1>}pE
else toLV4BtIG
insertSort(data, mid + 1, r - mid); &]V.S7LC#
5]~'_V
for (i = l; i <= mid; i++) { ^/uA?h:]\
temp = data; 'SO %)B
} >~#yu&*D
for (j = 1; j <= r - mid; j++) { !NIhx109q
temp[r - j + 1] = data[j + mid]; 09|K>UC)v
} b`(}.r?W
int a = temp[l]; Wfu(*
int b = temp[r]; w2;eh]k
for (i = l, j = r, k = l; k <= r; k++) { \j+1V1t9
if (a < b) { XYjV.j\
data[k] = temp[i++]; tG:25 T0
a = temp; u$h
4lIl
} else { C](f>)Dz
/
data[k] = temp[j--]; t\?ik6
b = temp[j]; # Nk;4:[
} :=}BN
} ? 8)'oMD
} Z.c'Hs+;
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/** B%"
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* @param data cq5jP Z}
* @param l hM@
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* @param i >x/z7v?^I
*/ gRrL[z
private void insertSort(int[] data, int start, int len) { bT\1>
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); lun#^ J
} D~biKrg?=
} *Tas`WA
} a!ud{Dx
} #G.ulX
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堆排序: BD68$y
wE[]6\_x1
package org.rut.util.algorithm.support; c(J!~7
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import org.rut.util.algorithm.SortUtil; ?Q sQnQ
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/** QXL'^uO
* @author treeroot 1jCLO}
* @since 2006-2-2 %+f>2U4I
* @version 1.0 uPhK3nCGo
*/ %kv0Wefs
public class HeapSort implements SortUtil.Sort{ n\QgOSr<
~kQA7;`j$
/* (non-Javadoc) .}^g!jm~h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MTsM]o
*/ 9`wZz~hL"
public void sort(int[] data) { ?!;7:VIE
MaxHeap h=new MaxHeap(); S)lkz'tdk
h.init(data); E7NV ^4h
for(int i=0;i h.remove(); 9zZr^{lUl
System.arraycopy(h.queue,1,data,0,data.length); l%[EXZ
} M1 :uJkO.
t5[#x4
p
private static class MaxHeap{ >CrA;\l
yXz*5W_0D
void init(int[] data){ ,#Iu
7di
this.queue=new int[data.length+1]; }#.L7SIJ<J
for(int i=0;i queue[++size]=data; 6,)[+Bl
fixUp(size); ZZk=E4aae
} Ge2q%
} p=;=w_^y
^?U!pq-`
private int size=0; X<i^qoV
(0j}-iaQEZ
private int[] queue; 1>*#%R?W
gGr^@=;YC
public int get() { lV`Q{bd+
return queue[1]; +,2:g}5
} EKA#|^Q:NX
]+(6,ct&.
public void remove() { G;&-\0>W
SortUtil.swap(queue,1,size--); 'h/C oTk@,
fixDown(1); +g` 'J$
} KB%"bqB|
file://fixdown sp#p8@Cj
private void fixDown(int k) { ;gBRCZ
int j; PUF/#ck
while ((j = k << 1) <= size) { fF?z|
if (j < size %26amp;%26amp; queue[j] j++; qDv93
if (queue[k]>queue[j]) file://不用交换 {. 2k6_1[
break; c\iA89msp
SortUtil.swap(queue,j,k); T,]7ICF#
k = j; x$IX5:E#e
} Qy.w=80kf
} ?3*l{[@J
private void fixUp(int k) { ~p1j`r;
while (k > 1) { 3{ LP?w:@
int j = k >> 1; zhpx"{_
if (queue[j]>queue[k]) hCCiD9gz
break; t *1u[~=
SortUtil.swap(queue,j,k); {7 $c8i
k = j; 'XZ)!1N
} MZlk0o2
} ~MS\
'`eO\huf
} ?**+e%$$
@n(Z$)8tR
} ?mWw@6G,
u:[vaBh91
SortUtil: ?%`@ub$
hvA^n@nr
package org.rut.util.algorithm; zoOaVV&1
'f[T&o&L/
import org.rut.util.algorithm.support.BubbleSort; VCn{mp*h
import org.rut.util.algorithm.support.HeapSort; >+]_5qc
import org.rut.util.algorithm.support.ImprovedMergeSort; zY,r9<I8_x
import org.rut.util.algorithm.support.ImprovedQuickSort; 1jy9lP=
import org.rut.util.algorithm.support.InsertSort; ^zt-HDBR_
import org.rut.util.algorithm.support.MergeSort; |55N?=8
import org.rut.util.algorithm.support.QuickSort; Z2TL #@
import org.rut.util.algorithm.support.SelectionSort; lD"(MQV@0
import org.rut.util.algorithm.support.ShellSort; O>^C4c!
"NgxkbDEbG
/** Ys,{8Y,7
* @author treeroot cgm81+[%r
* @since 2006-2-2 } w
5l
* @version 1.0 kMtwiB|7j
*/ UVw~8o9s
public class SortUtil { }RHn)}+
public final static int INSERT = 1; MxGu>r
public final static int BUBBLE = 2; Eo#u#IY
public final static int SELECTION = 3; %,D<O,N
public final static int SHELL = 4; A-4h
public final static int QUICK = 5;
"Qja1TQ
public final static int IMPROVED_QUICK = 6; dHK`eS$sb
public final static int MERGE = 7; \|E^v6E%0
public final static int IMPROVED_MERGE = 8; 0%m)@ukb
public final static int HEAP = 9; g>dA$h%
q{t*34R
public static void sort(int[] data) { xZ4~Oo@@_'
sort(data, IMPROVED_QUICK); yqi^>Ce0
} B
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private static String[] name={ p;W.lcO`0
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" `FsH}UPu
b
}; ]3g?hM6
L{(QpgHZ
private static Sort[] impl=new Sort[]{ 6xZ=^;H
new InsertSort(), 4\6N~P86
new BubbleSort(), )hk
new SelectionSort(), iVG-_RsKK
new ShellSort(), {K9/HqH
new QuickSort(), rMU T_^
new ImprovedQuickSort(), nWMmna.5
new MergeSort(), ( YQWbOk
new ImprovedMergeSort(), LE*h9((
new HeapSort() "
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}; f|R"uW +
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public static String toString(int algorithm){ RTv
qls
return name[algorithm-1]; DSt]{fl`P
}
"dI;
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public static void sort(int[] data, int algorithm) { ]ut5S>,"
impl[algorithm-1].sort(data); FIbp"~
} jLpc
Zb,
CT1ja.\;
public static interface Sort { v{9t]s>B
public void sort(int[] data); \mV'mZ9>
} +QE^\a
1}tbH[
public static void swap(int[] data, int i, int j) { *X4PM\ck
int temp = data; MW PvR|Q
data = data[j]; kiRa+w:
data[j] = temp; X+~ XJ
} bzvh%RsW
} c7M%xGrP