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。 #0<XNLM
插入排序: D6Wa.,r
K)P%;X
package org.rut.util.algorithm.support; ji="DYtL
QsW/X0YBv
import org.rut.util.algorithm.SortUtil; wgA_38To
/** OZ&o:/*HM
* @author treeroot ]_$[8#kg
* @since 2006-2-2 FGkVqZ Y2?
* @version 1.0 _VXN#@y
*/ "wc<B4"
public class InsertSort implements SortUtil.Sort{ !Z6{9sKR=]
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/* (non-Javadoc) t`QENXA}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eV~goj
*/ S]{oPc[7
public void sort(int[] data) { FiU#T.`9'
int temp; #A.@i+Zv
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); %
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} 'B}qZCy W
} FgO)DQm
} ch]29
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} [/ZO q
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冒泡排序: Q@H V- (A
+/\6=).\
package org.rut.util.algorithm.support; tnIX:6
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import org.rut.util.algorithm.SortUtil; H)&R=s
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/** }1xo-mUg,
* @author treeroot ?%kV?eu'
* @since 2006-2-2 ctV,Q3'Z
* @version 1.0 I2DpRMy
*/ DL.!G
public class BubbleSort implements SortUtil.Sort{ $ulOp;~A%
/7LR;>B j
/* (non-Javadoc) <\FH fE
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |&jXp%4T
*/ *$*ce|V5
public void sort(int[] data) { eiOW#_"\
int temp; CH/rp4NeSy
for(int i=0;i for(int j=data.length-1;j>i;j--){ 5(8@%6>ruj
if(data[j] SortUtil.swap(data,j,j-1); )CyS#j#=
} 'H!XUtFs"
} ZG@q`<:j
} 3mni>*q7d
} iR0y"Cii
,2)6s\]/b
} 9C i-v/M]
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选择排序: yppo6HGD
-%dCw6aX+
package org.rut.util.algorithm.support; p<;0g9,1
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import org.rut.util.algorithm.SortUtil; (tQc
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/** [SW_C
* @author treeroot ]:\dPw`A
* @since 2006-2-2 9k=3u;$v
* @version 1.0 yOKI*.}
*/ ~v"L!=~G;a
public class SelectionSort implements SortUtil.Sort { nxHkv`s k
fxIf|9Qi`
/* *\q
d
* (non-Javadoc) 7[wieYj{
* (4EI-e*6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4Z,!zFS$`
*/ {}Za_(Y,]
public void sort(int[] data) { x3krbUlx
int temp; r"R#@V\'1b
for (int i = 0; i < data.length; i++) { K_-MYs.
int lowIndex = i; :,I:usW"
for (int j = data.length - 1; j > i; j--) { $tS}LN_!
if (data[j] < data[lowIndex]) { MqUH',\3
lowIndex = j; 40<mrVl
} !v0LBe4
} 6JQ'Ik;$wX
SortUtil.swap(data,i,lowIndex); = 9]~yt
} k@:%:Sj 2
} eGHaY4|
JO<wU
} C2Tyoza
3%ZOKb"D*
Shell排序: n.G!43@*N
;d9QAN&0}
package org.rut.util.algorithm.support; !GGkdg*-*9
@{O`E^}-D
import org.rut.util.algorithm.SortUtil; C73kJa
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/** >oe]$r
* @author treeroot *`RkTcG
* @since 2006-2-2 abLnI =W`
* @version 1.0
(ICd}
*/ y;H-m>*%
public class ShellSort implements SortUtil.Sort{ u-5{U-^_
cjIh}:|'
/* (non-Javadoc) #ucBo<[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) igR";OQk
*/ /Mu@,)''
public void sort(int[] data) { /RC7"QzL
for(int i=data.length/2;i>2;i/=2){ sp*v?5lW
for(int j=0;j insertSort(data,j,i); NPe%F+X
} xX4N4vb
} Eg3q!J&Z
insertSort(data,0,1); `lt"[K<
} $'hEz/
~O&:C{9=
/** %n: k#
* @param data r|Tcfk]%
* @param j r?
E)obE
* @param i s6^ >F/x
*/ ~1vDV>dpE
private void insertSort(int[] data, int start, int inc) { *itUWpNhr
int temp; h{HHLR
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ` v@m-j6
} [e}]}t8m
} tHwMX1 IG
} P! #[mio
BeoDKdAwY
} [}0haTYc4
hp-<2i^"!
快速排序: (S\[Y9
>_"an~Ss
package org.rut.util.algorithm.support; (\YltC@q%
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import org.rut.util.algorithm.SortUtil; X!dYdWw*m
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/** PKg@[<g43
* @author treeroot ~;{;,8!)
* @since 2006-2-2
MC.)2B7
* @version 1.0 * kDC liL
*/ 8(&[Rs?K
public class QuickSort implements SortUtil.Sort{ \B,@`dw
*@=/qkaJaI
/* (non-Javadoc) c?[I?ytl
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G[I"8iS,
*/ MPg)=LI
public void sort(int[] data) { EC!02S
quickSort(data,0,data.length-1); Hp!-248 S
} 3E $f)
private void quickSort(int[] data,int i,int j){ =BAW[%1b
int pivotIndex=(i+j)/2; ( !fKNia@S
file://swap 3/e.38m|
SortUtil.swap(data,pivotIndex,j); .p]RKS=(:
RF4vtQC=
int k=partition(data,i-1,j,data[j]); .P%bkD6M
SortUtil.swap(data,k,j); gS]@I0y8
.
if((k-i)>1) quickSort(data,i,k-1); ]e>w}L(gV
if((j-k)>1) quickSort(data,k+1,j); }1i`6`y1
4,gK[ dc
} ][h%UrV
/** P& -Qc
* @param data j8{i#;s!"
* @param i '+!1Y o'G
* @param j (U_ujPD ?
* @return sF?TmBQ*
*/ {Y=WW7:Qx
private int partition(int[] data, int l, int r,int pivot) { )SRefW.v
do{ MvHm)h
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 6/Xk7B
SortUtil.swap(data,l,r); KNpl:g3{<Q
} JNYFD8J~
while(l SortUtil.swap(data,l,r); =eXU@B
return l; E}Z/*lX
} OXSmt
DvJ
q#ClnG*
} u#;7<.D
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改进后的快速排序: E=CsIK
Cc' 37~6~P
package org.rut.util.algorithm.support; mD0f<gJ1
Ug t.&IA
import org.rut.util.algorithm.SortUtil; A8fOQ
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/** aS{n8P6vW
* @author treeroot k,E{C{^M
* @since 2006-2-2 5k3 b3&
* @version 1.0 N~d ?WD\^
*/ gG:Vt}N
public class ImprovedQuickSort implements SortUtil.Sort { \y)rt )
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private static int MAX_STACK_SIZE=4096; ~'iHo]9O
private static int THRESHOLD=10; %C'?@,7C
/* (non-Javadoc) ?'Xj
g#}<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H*QIB_
*/ rEnQYz
public void sort(int[] data) { 7>|J8*/Nd
int[] stack=new int[MAX_STACK_SIZE]; KL:j?.0
~xfP:[u
int top=-1; WJndoB.f[2
int pivot; Lh"<XYY
int pivotIndex,l,r; 2LL'J7
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stack[++top]=0; F/bT)QT<f
stack[++top]=data.length-1; ^f
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:q7Wy&ow
while(top>0){ =wHVsdNCN
int j=stack[top--]; *_{j=sd
int i=stack[top--]; !t%j?\f
u\x}8pn
pivotIndex=(i+j)/2; V>%rv'G8
pivot=data[pivotIndex]; }bpQq6ZF
el<s8:lA
SortUtil.swap(data,pivotIndex,j); %@ODs6 R0
9ni1f{k
file://partition !/*\}\'4
l=i-1; 3!Ij;$
r=j; -M~:lK]n
do{ H8^(GUhyp
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); |y#
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SortUtil.swap(data,l,r); uaGk6S
} N1S{suic
while(l SortUtil.swap(data,l,r); TnOggpQ6X
SortUtil.swap(data,l,j); &yTqZ*Yuk
<8i//HOE
if((l-i)>THRESHOLD){ S6M}WR^,
stack[++top]=i; <X^@*79m
stack[++top]=l-1; K?Nhi^f"L
} |`,2ri*5A
if((j-l)>THRESHOLD){ <QAFL uey
stack[++top]=l+1; 7P5)Z-K[
stack[++top]=j; 4qh?,^Dq
} b:m88AG
VUGmi]qd
} o.g V4%
file://new InsertSort().sort(data); m@F`!qY~Y\
insertSort(data); bMu+TgAT,
} JCzeXNY
/** SC!RbW@3
* @param data Uh4%}-;
*/ 7~%?#
private void insertSort(int[] data) { 8oseYH
int temp; 0c]/bs{}
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); J26V nK
} "'.UU$]d
} 9Cp-qA%t
} nFe<w
EIAc@$4
} $am$EU?s
cN6X#D
归并排序: Hqx-~hQO
DGF5CK.O
package org.rut.util.algorithm.support; 9(7-{,c
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import org.rut.util.algorithm.SortUtil;
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/** 7#a-u<HF"
* @author treeroot >J?fl8
* @since 2006-2-2 2tEkj=fA-
* @version 1.0 9};8?mucr
*/
(@VMH !3
public class MergeSort implements SortUtil.Sort{ Y%^w:|f^
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/* (non-Javadoc) gzT*-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1#2 I
*/ ?4&e;83_#y
public void sort(int[] data) { )m)-o4c
int[] temp=new int[data.length]; g2ixx+`?|:
mergeSort(data,temp,0,data.length-1); m,w A:o$'
} h"Q8b}$^)
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private void mergeSort(int[] data,int[] temp,int l,int r){ =R|HV;9 h
int mid=(l+r)/2; pa3{8x{9m
if(l==r) return ; iy!=6
mergeSort(data,temp,l,mid); W,n!3:7s
mergeSort(data,temp,mid+1,r); _8J.fT$${
for(int i=l;i<=r;i++){ Eyqa?$R
temp=data; 6l
x>>J!H
} &`r-.&Y
int i1=l; ,^< R{{{-A
int i2=mid+1; k%#EEMh
for(int cur=l;cur<=r;cur++){ 4l'fCZhA}
if(i1==mid+1) @Uvz8*b6
data[cur]=temp[i2++]; _6hQ %hv8
else if(i2>r) M
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data[cur]=temp[i1++]; |aS.a&vwR
else if(temp[i1] data[cur]=temp[i1++]; lb3bm)@:
else s
5Qcl;}
data[cur]=temp[i2++]; |SSSH
} V)k4:H
} G>}255qY
.`H5cuF`
} :eCwY
)2o?#8J
改进后的归并排序: V2EUW!gn
2
T&bYa`f]
package org.rut.util.algorithm.support; %aCqi(.7
G~a ZJ,
import org.rut.util.algorithm.SortUtil; _4~+{l+
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/** +\]\[6
* @author treeroot &r/Mi%
* @since 2006-2-2 T?0eVvM
* @version 1.0 <xm7qmqI
*/ ]F~dlH1Wp
public class ImprovedMergeSort implements SortUtil.Sort { Sz`,X0a
hi(;;C9
private static final int THRESHOLD = 10; ;$|nrwhy
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/* q54]1TQ
* (non-Javadoc) U7F!Z(
9
* /,yd+wcW#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bAqA1y3=
*/ Zu[su>\
public void sort(int[] data) { ~<bZ1TD
int[] temp=new int[data.length]; *i%d,w0+
mergeSort(data,temp,0,data.length-1); (L&d!$,Dv
} CHX #^0m.
;)*eo_tQ
private void mergeSort(int[] data, int[] temp, int l, int r) { J
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int i, j, k; x 9fip-
int mid = (l + r) / 2; ZY+qA
if (l == r) bY:x8fl
return; T8$y[W-c
if ((mid - l) >= THRESHOLD) Y:[u1~a
mergeSort(data, temp, l, mid); Xx:"4l.w.
else 99QU3c<.
insertSort(data, l, mid - l + 1); 0GeTSFj
if ((r - mid) > THRESHOLD) onzxx4bax
mergeSort(data, temp, mid + 1, r); ;.980+i1
else F]&*ow
insertSort(data, mid + 1, r - mid); (!WD1w
B]tQ(s~
for (i = l; i <= mid; i++) { Wne@<+mX
temp = data; ?e 4/p
} xy;;zOh`
for (j = 1; j <= r - mid; j++) { %'pgGC"|
temp[r - j + 1] = data[j + mid]; 'H;*W |:-]
} $!t4r
int a = temp[l]; tWcHb #
int b = temp[r]; NzvXN1_%
for (i = l, j = r, k = l; k <= r; k++) { ww1[rCh\+
if (a < b) { j8sH|{H!Nq
data[k] = temp[i++]; Q$"D]!G
a = temp; 0g8NHkM:2a
} else { %pCTN P
data[k] = temp[j--]; eaU
b = temp[j]; W"{N Bi
} (E1~H0^
} 8}:nGK|kx
} CqC`8fD1
*vMn$,^0h9
/** iy.\=Cs$N
* @param data 4*;MJ[|
* @param l dWBA1p
* @param i y@yD5$/
*/ 8z\xrY
private void insertSort(int[] data, int start, int len) { )4 ;`^]F
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); H\[W/"
} _aeBauD
} a 1*p*dM#
} 6Kz,{F@
} '|=;^Z7.K
A3*!"3nU
堆排序: />>\IR
_@/8gPT*i
package org.rut.util.algorithm.support; a8Wwq?@
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import org.rut.util.algorithm.SortUtil; Dvln/SBk
c:.eGH_f
/** /qw.p#
* @author treeroot ddR>7d}N
* @since 2006-2-2 32
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* @version 1.0 &cTU
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*/ Xn
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public class HeapSort implements SortUtil.Sort{ |wj?ed$
f
U
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/* (non-Javadoc) Y<8vw
d
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?
=+WRjF
*/ #e5\j\#.
public void sort(int[] data) { &kw@,];4Z
MaxHeap h=new MaxHeap(); ?bu>r=oIO]
h.init(data); <9
;!3xG
for(int i=0;i h.remove(); <54
S
System.arraycopy(h.queue,1,data,0,data.length); GPkpXVm
} 40
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/u+e0BHo
private static class MaxHeap{ DlNX 3
CJI~_3+K
void init(int[] data){ pD+k*
this.queue=new int[data.length+1]; #3d(M
for(int i=0;i queue[++size]=data; )\^-2[;
fixUp(size); 0SPk|kr
} VLN_w$iEq
} #R
RRu2
7t_^8I%[
private int size=0; ~F7gP{r
dC4'{n|7
private int[] queue; 01o4Th m
,6W>can
public int get() { RCLeA=/N@0
return queue[1]; L&OwPd
} 5NLDYi@3
76` .Y
public void remove() { 2dgd~
SortUtil.swap(queue,1,size--); ~< x:q6
fixDown(1); T9q-,w/j;
} P
L+sR3bR
file://fixdown j1HW._G
private void fixDown(int k) { ?[>3QE
int j; :p6M=
while ((j = k << 1) <= size) { Oz#{S:24M+
if (j < size %26amp;%26amp; queue[j] j++; Q)z8PQl O
if (queue[k]>queue[j]) file://不用交换 uA#;G/$
break; RY*U"G0#w
SortUtil.swap(queue,j,k); EDs\,f}
k = j; w:l
V"]1
} ~.lPEA %%
} ##4HYQ%E
private void fixUp(int k) { $7A8/#
while (k > 1) { eGbGw
int j = k >> 1; $]2vvr
if (queue[j]>queue[k]) 9]o-O]7/
break; w^0nqh
SortUtil.swap(queue,j,k); *siFj
CN<
k = j; Xm2z}X(%
} `n?DU;,
} Nu~lsWyRI5
0S$N05
} -1ub^feJ,
@2v_pJy^
} QoH6
,izO{@We2{
SortUtil: i8HTzv"J
tcog'nAz
package org.rut.util.algorithm; Z>#i**
0NX,QD
import org.rut.util.algorithm.support.BubbleSort; 4#hSJ(~7S
import org.rut.util.algorithm.support.HeapSort; 5rZ
import org.rut.util.algorithm.support.ImprovedMergeSort; _ZkI)o
import org.rut.util.algorithm.support.ImprovedQuickSort; t}/( b/VD
import org.rut.util.algorithm.support.InsertSort; 0h7r&t%YsV
import org.rut.util.algorithm.support.MergeSort; i,9)\1R
import org.rut.util.algorithm.support.QuickSort;
kX2rp?{
import org.rut.util.algorithm.support.SelectionSort; 0>Z_*U~6
import org.rut.util.algorithm.support.ShellSort; c6]D-YNFG
| (_
/** e6RPIg
* @author treeroot ]
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* @since 2006-2-2 Alw3\_X
* @version 1.0 K0Fh%Y4)QH
*/ lQkQ9##*
public class SortUtil { mF^v ~
public final static int INSERT = 1; /FEVmH?
public final static int BUBBLE = 2; xe&i^+i
public final static int SELECTION = 3; 001FmiV
public final static int SHELL = 4; }Y36C.@H
public final static int QUICK = 5; 7o5BXF
public final static int IMPROVED_QUICK = 6; y;@:ulv[
public final static int MERGE = 7; _/5H l`
public final static int IMPROVED_MERGE = 8; )~ h}
public final static int HEAP = 9; nt7.?$
<
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public static void sort(int[] data) { 2WxQ(:d=
sort(data, IMPROVED_QUICK); t"/q]G5
} /{--+
C
private static String[] name={ pgZXJ
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" :T
!'N\7
}; ,f;}|d:r
]^K4i)\
private static Sort[] impl=new Sort[]{ )iK6:s#
new InsertSort(), :$BCRQ
new BubbleSort(), 9.B
KI/
new SelectionSort(), gn".u!9j
new ShellSort(), a\YV3NJ/A
new QuickSort(), O~K>4ax
new ImprovedQuickSort(), a8Nh=^Py
new MergeSort(), 2Gaa(rJ5o
new ImprovedMergeSort(), LsS
new HeapSort() k4y'b
}; KE3;V2Ym f
@eIJ]p
public static String toString(int algorithm){ b9<#K+L-
return name[algorithm-1]; ls:w8&`*
} =`s!;
d8=x0~7
public static void sort(int[] data, int algorithm) { \WB<86+z
impl[algorithm-1].sort(data); DG ;_Vg
} {vyv7L
.j<]mUY
public static interface Sort { xx9 g''Q
public void sort(int[] data); v+#}rUTF
} !"/n/jz
.Cl:eu,]
public static void swap(int[] data, int i, int j) { F Yzi~L
int temp = data; E3gh?6
data = data[j]; )@Yf]qx+Y<
data[j] = temp; (~wqa 3
} aa#Y=%^
} (w/T-*