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。 m|K"I3W$
插入排序: zNAID-5K;
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package org.rut.util.algorithm.support; ug?gVK
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import org.rut.util.algorithm.SortUtil; 2~`lvx
/** b02V#m;Z
* @author treeroot m+66x {M2c
* @since 2006-2-2 _=%F6}TE
* @version 1.0 %S$P<nKN5
*/ 6I)[6R
public class InsertSort implements SortUtil.Sort{ 12 {F
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/* (non-Javadoc) Vq8 G( <77
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \!O3]k,r
*/ .bdp=vbA
public void sort(int[] data) { }s+ t*z
int temp; 6JrwPZB
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); b/#SkxW#S
} ]~a;tF>Fw
} &,v-AL$:Q
} ++9?LH4S4
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} { XI 0KiE
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冒泡排序: e>F i
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package org.rut.util.algorithm.support; dh9Qo4-{
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import org.rut.util.algorithm.SortUtil; a$=BX=
w\V1pu^6@
/** _#\e5bE=Z
* @author treeroot ;2#9q9(
* @since 2006-2-2 pyHU+B
* @version 1.0 <x!q!;
*/ WD/\f$4
public class BubbleSort implements SortUtil.Sort{ K#"J8h;x
`!Z0;qk
/* (non-Javadoc) <bSG|VqnH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]|JQH
*/ z6IOVQ*r
public void sort(int[] data) { .j
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int temp; `}r)0,Z}3
for(int i=0;i for(int j=data.length-1;j>i;j--){ -JKl\ E
if(data[j] SortUtil.swap(data,j,j-1); $&25hvK,
} Sb4^*
$uz
} N F$k~r
} bA_/6r)u
} fMpxe(
8=K%7:b
} /b1+ ^|_
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选择排序: Fe[)-_%G
gg0rkg
package org.rut.util.algorithm.support; &6feR#~A
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import org.rut.util.algorithm.SortUtil; @:dn\{Zsea
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/** |2Vhj<6
* @author treeroot cyMvjzzRN
* @since 2006-2-2 cp:U@Nh(
* @version 1.0 $#z-b@s=B
*/ qnu<"$
public class SelectionSort implements SortUtil.Sort { %nS(>X<B
C6?({
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/* bcR";cE
* (non-Javadoc) =:M/hM)#
* +TZVx(Z&A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) > `1K0?_
*/ +P &S0/
public void sort(int[] data) { m
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int temp; BS.5g<E2q
for (int i = 0; i < data.length; i++) { k/Z]zZC
int lowIndex = i; D_N0j{E
for (int j = data.length - 1; j > i; j--) { !.G knDT
if (data[j] < data[lowIndex]) { bJ"}-s+Dx
lowIndex = j; _4f=\
} lC=-1*WH
} dc dVB>D
SortUtil.swap(data,i,lowIndex); bA-/"'Vp9
} %A3ci[$g
} 1gA^Qv~?
1!%T<!A.
} 8I}ATc
mz2 v2ma
Shell排序: |2Y/l~
z"D0Th`S6
package org.rut.util.algorithm.support; * lJkk
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import org.rut.util.algorithm.SortUtil; N79?s)l:K
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/** 4Uk\h gT0
* @author treeroot _ea|E 8
* @since 2006-2-2 8U%y[2sT
* @version 1.0 N;HG@B!m
*/ .MS41
E!
public class ShellSort implements SortUtil.Sort{ ]IclA6
cGSG}m@B`
/* (non-Javadoc) ${ 5E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z?<&@YQS
*/ tZ.hSDH
public void sort(int[] data) { N}ugI`:
for(int i=data.length/2;i>2;i/=2){ 2M>`W5
for(int j=0;j insertSort(data,j,i); B/_~j_n$m
} 7<*,O&![|
} ]&?8l:3-G
insertSort(data,0,1); Qp;FVUw9
} ]i/Bq!d l
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/** c :2 w(BVi
* @param data `J$7X
* @param j _]zH4o<p
* @param i sd _DG8V
*/ o3X0c6uU
private void insertSort(int[] data, int start, int inc) { d3]<'B:nb
int temp; 0iV~MQZ(
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ;LC?3.
} z.~jqxA9
} yf2P6b\
} eUKl(
pupt__NZ)n
} wu. >'v?y
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快速排序: !A:d9 k
[a!)w@I:
package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; $T6+6<
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/** cR=o!2O
* @author treeroot cAn_:^
* @since 2006-2-2 fizL_`uMqb
* @version 1.0 Ki>XLX,er=
*/ XE8%t=V!c$
public class QuickSort implements SortUtil.Sort{ "vfpG7CG
X4JSI%E
/* (non-Javadoc) Khh}flRy
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RBLOc$2
*/ }LY)FT4n
public void sort(int[] data) { C[,&Y&`j
quickSort(data,0,data.length-1); */OKg;IMi
} 2%/+r
private void quickSort(int[] data,int i,int j){ T0@$6&b%\z
int pivotIndex=(i+j)/2; A*{CT>
file://swap -6xh
SortUtil.swap(data,pivotIndex,j); tC5>K9Ed
I9<%fv
int k=partition(data,i-1,j,data[j]); SPp|/ [i7
SortUtil.swap(data,k,j); j XYr&F
if((k-i)>1) quickSort(data,i,k-1); 2AW*PDncxP
if((j-k)>1) quickSort(data,k+1,j); Ab8Ke|fA
MvTp%d.
}
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/** rYM@e
* @param data Y(Y#H$w
* @param i # S(b2LEc
* @param j >=86*U~
* @return =&)R2pLs*
*/ y@<&A~Cl^
private int partition(int[] data, int l, int r,int pivot) { `i!fg\qnK
do{ "-P z2QJY
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); }/4),W@<
SortUtil.swap(data,l,r); ]!uId#OH
} DUwms"I,%
while(l SortUtil.swap(data,l,r); "y60YYn-#J
return l; !R![:T\,
} W^pf 1I8[
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} i]Bu7Fuu
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改进后的快速排序: HP\5gLVXY
lx7]rkWo|a
package org.rut.util.algorithm.support; %a]Imsm
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import org.rut.util.algorithm.SortUtil; TkVqv v
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/** M^lP`=sSv
* @author treeroot EeGTBVms
* @since 2006-2-2 vnS8N
* @version 1.0 ^v+p@k
*/ {&a6<y#-
public class ImprovedQuickSort implements SortUtil.Sort { S%e)br}
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private static int MAX_STACK_SIZE=4096; xUTTRJ(\
private static int THRESHOLD=10; bq9/d4
/* (non-Javadoc) OuKRaZ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !JBj%| !
*/ =mSu^q(l
public void sort(int[] data) { F:~@e(
int[] stack=new int[MAX_STACK_SIZE]; e-%q!F(Bf
r]U8WM3r
int top=-1; fYW9Zbov-
int pivot; ]0g p.R
int pivotIndex,l,r; Ro;I%j
7EVB|gTp
stack[++top]=0; X]o"vx%C
stack[++top]=data.length-1; v3G$9(NE;
~[f`oC
while(top>0){ hZw8*H^tP
int j=stack[top--]; <+<Nsza
int i=stack[top--]; 0\,!
";/ogFi
pivotIndex=(i+j)/2; W0}FOfL9
pivot=data[pivotIndex]; 8A}<-?>
2qQ;U?:q
SortUtil.swap(data,pivotIndex,j); zZP/C
li{!Jp5]1b
file://partition =\mJ5v"hA
l=i-1; !,C8
r=j; <AK9HPxP
do{ Hv2[=e lc
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); >nvnU`\
SortUtil.swap(data,l,r); ou{V/?rb
} xSDTO$U8%
while(l SortUtil.swap(data,l,r); Z:^ S-h
SortUtil.swap(data,l,j); 4dm0:,
G
ZUvc|5]
if((l-i)>THRESHOLD){ fWb+08}C
stack[++top]=i; -<sW`HpD'
stack[++top]=l-1; `Y^l.%AZZ
} R&$fWV;'
if((j-l)>THRESHOLD){ ;rNX
stack[++top]=l+1; ] g8z@r"b
stack[++top]=j; X\>/'fC$
} x&"P^gh)
l%p,m[
} #N%j9
file://new InsertSort().sort(data); >UV}^OO
insertSort(data); dk"@2%xJ2d
} *_P'> V#p
/** $sUn'62JlU
* @param data |>1#)cONW
*/ oKH+Q6S:
private void insertSort(int[] data) { A8o)^T(vJ
int temp; Ypxp4B
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); +1@'2w{
} ?b"'w
} gI"cZ h3}
} i29a1nD4Hm
t<j_` %`8
} '&2-{Y [!
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归并排序: gf>GK/^HH
WQ9Q:F2
package org.rut.util.algorithm.support; /8Z&Y`G
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import org.rut.util.algorithm.SortUtil; j)#yyK{k2s
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/** hztqZ:
* @author treeroot 9}L2$^#,NA
* @since 2006-2-2 AX
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* @version 1.0 Rg+#(y
*/ rO YD[+
public class MergeSort implements SortUtil.Sort{ (_6JQn
Mz86bb^J
/* (non-Javadoc) ?YUL~P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z9*@w`x^u
*/ fL("MDt
public void sort(int[] data) { wQ~]VVRN
int[] temp=new int[data.length]; L"NfOST3'R
mergeSort(data,temp,0,data.length-1); 2E`mbT,v&
} Do5.
e,Y<$kPV
private void mergeSort(int[] data,int[] temp,int l,int r){ MOay^{u
int mid=(l+r)/2; FvO,* r9
if(l==r) return ; -@Urq>^v T
mergeSort(data,temp,l,mid); g \ou+M#
mergeSort(data,temp,mid+1,r); ^~6gkS
}
for(int i=l;i<=r;i++){ ~B?Wg!
temp=data; B(5>H2
} ,}"jiGgS4
int i1=l; g/\cN(X
int i2=mid+1; g#Ta03\
for(int cur=l;cur<=r;cur++){ z@V9%xF-3
if(i1==mid+1) 3N|6?'m
data[cur]=temp[i2++]; jSRi
else if(i2>r) wh2E$b(-
data[cur]=temp[i1++]; mdo$d-d&
else if(temp[i1] data[cur]=temp[i1++]; VE1j2=3+o
else bI_MF/r''
data[cur]=temp[i2++]; K
V
} 'KT(;Vof
} k#7A@Vb
>oaL -01i
} ^HtB!Xc
@8+v6z
改进后的归并排序: O:
#SjjK
)[r=(6?n
package org.rut.util.algorithm.support; ~*UY[!+4^=
DsD? &:
import org.rut.util.algorithm.SortUtil; F%af05L[
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/** k g Rys
* @author treeroot ):}A Quy]
* @since 2006-2-2 8OO[Le]1
* @version 1.0 WwWCNN~}
*/ O6ugN-d>
public class ImprovedMergeSort implements SortUtil.Sort { &%8IBT
H*+7{;$
private static final int THRESHOLD = 10; t7sEY
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/* ^tI&5S]nE
* (non-Javadoc) jUgx
;=
* fny6`_O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t}?-ao
*/ &A`,hF8
public void sort(int[] data) { G007[|
int[] temp=new int[data.length]; t5u#[*
mergeSort(data,temp,0,data.length-1); mZmEE2h
} 7zJ2n/`m*
+dRRMyxe4
private void mergeSort(int[] data, int[] temp, int l, int r) { DlAwB1Ak
int i, j, k; pjFj{
int mid = (l + r) / 2; F-
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if (l == r) <*-8E(a
return; pG"hZB3)
if ((mid - l) >= THRESHOLD) hY!>>
mergeSort(data, temp, l, mid); l~Ka(*[!U
else 25 :v c0
insertSort(data, l, mid - l + 1); XW@C_@*J
if ((r - mid) > THRESHOLD) "r3h+(5
mergeSort(data, temp, mid + 1, r); yLK %lP
else 3Co1bY:
insertSort(data, mid + 1, r - mid); HDKY7Yr
csxn"Dz\
for (i = l; i <= mid; i++) { Wm5[+z|2?9
temp = data; {;zHkmx
} |W@Ko%om
for (j = 1; j <= r - mid; j++) { rKdsVW
temp[r - j + 1] = data[j + mid]; ; C(5lD&\5
} _`0DO4IU
int a = temp[l]; UQ7La 7"
int b = temp[r]; 0Zo><=
for (i = l, j = r, k = l; k <= r; k++) { w(t1m]pF[
if (a < b) { a|#pl!
data[k] = temp[i++]; 5MZv!N
a = temp; 8>D*U0sNl
} else { >i.$s
data[k] = temp[j--]; !|]k2=+I
b = temp[j]; 8*&73cp
} BI<9xl]a
} FeQo,a
} |TkicgeS
!r/~D |
/** R!WDQGR(2
* @param data |ITb1O`_P
* @param l cfg.&P>
* @param i )1R[X!KQ7
*/ $ndBT+i
private void insertSort(int[] data, int start, int len) { QtWe,+WWV
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); _5O~]}
} D!Nc&|X^
} !W0JT#0
} E?|NYu#I6
} ="%887e
U2vb&Qu/
堆排序: (b&Z\?"
l[m*csDk"
package org.rut.util.algorithm.support; 3pL4Zhf
Gv
}
import org.rut.util.algorithm.SortUtil; sCQV-%9
AeN:wOm
/** $vYy19z
* @author treeroot QQS"K
g
* @since 2006-2-2 /Dt:4{aTOC
* @version 1.0 {TMng&
*/ B4+u/hkbh?
public class HeapSort implements SortUtil.Sort{ *8yC6|wL?
Z("N
*`VP;
/* (non-Javadoc) B,Tv9(sv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NiE`u m
*/ !bnnUCTb\
public void sort(int[] data) { US-f<Wq
MaxHeap h=new MaxHeap(); g/P1lQ)
h.init(data); D;+Y0B
for(int i=0;i h.remove(); -ik((qx_
System.arraycopy(h.queue,1,data,0,data.length); l
6aD3?8LN
} oY,{9H37b
?@`5^7*
private static class MaxHeap{ ",,.xLI7
:6EX-Xyj
void init(int[] data){ k+je-%hPj
this.queue=new int[data.length+1]; "SWL@}8vx
for(int i=0;i queue[++size]=data; .RmoO\
,Gm
fixUp(size); (I>S qM
Y
} d.B<1"MQ
} US9@/V*2
~Hj c?*
private int size=0; hjk]?MC
yOb']
private int[] queue; xt`a":lr u
SNSoV3|k-
public int get() { * 0JF|'
return queue[1]; 5bI4'
;
} "@5{=
@$$J}~{
public void remove() { k][{4~z
SortUtil.swap(queue,1,size--); r(wtuD23q
fixDown(1); bS55/M w
} EKsOj&ZiJ
file://fixdown 3!#FG0Z
private void fixDown(int k) { <dBz]W
int j; {c drMP@""
while ((j = k << 1) <= size) { @j%@Z
if (j < size %26amp;%26amp; queue[j] j++; _)3C_G1!
if (queue[k]>queue[j]) file://不用交换 j-FMWEp
break; iF.f*3-NJB
SortUtil.swap(queue,j,k); o`'4EVw*
k = j; $!z .[GL
} H{EZ} *{M4
} jC?l :m?
private void fixUp(int k) { ozHL'H
while (k > 1) { 8/ukzY1!
int j = k >> 1; As tuM]
if (queue[j]>queue[k]) XZ(<Mo\v
break; jgkY^l
SortUtil.swap(queue,j,k); vJx( lU`Y
k = j; j[t2Bp
} _l,-SQgj
} {sq:vu@NC
Lo}/k}3Sx
} b 1."mT!p
Uhyf
} p2+K-/}ApP
[w+1<ou;j
SortUtil: "Z dI~
I:MrX
package org.rut.util.algorithm; @bnw$U`+
YNp-A.o
W@
import org.rut.util.algorithm.support.BubbleSort; 0B~x8f
import org.rut.util.algorithm.support.HeapSort; ##1/{9ywy
import org.rut.util.algorithm.support.ImprovedMergeSort; 4"^W/Zo
import org.rut.util.algorithm.support.ImprovedQuickSort; : 'jVA
import org.rut.util.algorithm.support.InsertSort; X %7l!
k[
import org.rut.util.algorithm.support.MergeSort; 7+6I~&x!Lz
import org.rut.util.algorithm.support.QuickSort; uY3#,
import org.rut.util.algorithm.support.SelectionSort; P4E_<v[
import org.rut.util.algorithm.support.ShellSort; w2r*$Q
2xBh
/** '68#7Hs.
* @author treeroot ^
$N3.O.
* @since 2006-2-2 MY(51)*
* @version 1.0 #wh[F"zX
*/ ,E+\SBQS_
public class SortUtil { C]na4yE8
public final static int INSERT = 1; 9'ky2
]w
public final static int BUBBLE = 2; -Gm}i8;
public final static int SELECTION = 3; NZwi3
public final static int SHELL = 4; VQ+G.
public final static int QUICK = 5; A\.{(,;kp
public final static int IMPROVED_QUICK = 6; [Qqss8a
public final static int MERGE = 7; `vf]C'
public final static int IMPROVED_MERGE = 8; 8>X] wA6q
public final static int HEAP = 9; 1ZvXRJ)%
)cm^;(#pV
public static void sort(int[] data) { =>GGeEL
sort(data, IMPROVED_QUICK); #X?E#^6?E
} b~TTz`HZ
private static String[] name={ ~cfvL*~5
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" SxX
}; OgCNqW
d-
mZjP;6
private static Sort[] impl=new Sort[]{ RgzzbW
new InsertSort(), >;fn,9w
new BubbleSort(), G
P '-
new SelectionSort(), RiIafiaD
new ShellSort(), }CrWmJu0
new QuickSort(), t
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new ImprovedQuickSort(), (:}}p}u
new MergeSort(), xhMAWFg|
new ImprovedMergeSort(), $ao7pvU6
new HeapSort() c/Li,9cT'
}; `SS[[FT$>
!d95gq<=>
public static String toString(int algorithm){ bj?=\u
return name[algorithm-1]; r(zn1;zl
} FrV8_[
x l=i_
public static void sort(int[] data, int algorithm) { NA#,q 8
impl[algorithm-1].sort(data); yFTN/MFt
} 6E_YUk?KW
e&NJj:Ph*
public static interface Sort { =L{-Hu/j
public void sort(int[] data); pK0@H "$8
} gYmO4/c,
-NA2+].
public static void swap(int[] data, int i, int j) { o
ethO
int temp = data; q/qig5Ou
data = data[j]; H,LJ$
py
data[j] = temp; ,!P}Y[|
} JX#0<U|L
} s$^2Qp