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。 we3t,?`rk7
插入排序: u#<]>EtbB
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package org.rut.util.algorithm.support; ,*US) &x
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import org.rut.util.algorithm.SortUtil; 62) F
/** v80e]M!
* @author treeroot NT 'Y h
* @since 2006-2-2 =1C9lKm
* @version 1.0 %VCHM GP=
*/ wvD|c%
public class InsertSort implements SortUtil.Sort{ GU`2I/R
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/* (non-Javadoc) &CgD smJo#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NT0q!r/!
*/ 3;AAC (X
public void sort(int[] data) { -[z;y73]t
int temp; fy5)Tih%.*
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); '4EJ_Vhztc
} $v,_8{ !
} utv.uwfat
} K9c:K/H
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} h1$,
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冒泡排序: o'G")o
<pCZ+Yv E"
package org.rut.util.algorithm.support; 3f0RMk$pH
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import org.rut.util.algorithm.SortUtil; V.qB3V$
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/** %0 S0"t
* @author treeroot v2NzPzzyb
* @since 2006-2-2 S"*wP[d.9
* @version 1.0 zKo,B/Ke4
*/ 6Y=)12T
public class BubbleSort implements SortUtil.Sort{ i{.!1i:
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/* (non-Javadoc) raCxHY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B^Vb=* QRo
*/ y7JJ[:~~
public void sort(int[] data) { SyI#Q[f'_
int temp; \O56!,k
for(int i=0;i for(int j=data.length-1;j>i;j--){ 9496ayi
if(data[j] SortUtil.swap(data,j,j-1); eG.?s;J0
} pV_2JXM~@
} *5^h>Vk/
} bTJ7RqL
} ;TYkJH"
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} &0'BCT
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选择排序: PM{kiz^
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package org.rut.util.algorithm.support; C.eZcNJG
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import org.rut.util.algorithm.SortUtil; FKPI{l
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/** EyhQjsaT
* @author treeroot -70Ut
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* @since 2006-2-2 .M04n\
* @version 1.0 >Tw|SK+3
*/ |X>:"?4t
public class SelectionSort implements SortUtil.Sort { 5bk5EE`
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/* |#k1a:
* (non-Javadoc) Tw$la kw
* Hc71 .rqS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) krgsmDi7
*/ _15r!RZ:1
public void sort(int[] data) { :2La,
int temp; h<[ o;E
for (int i = 0; i < data.length; i++) { Jf2
int lowIndex = i; 6 LC*X
for (int j = data.length - 1; j > i; j--) { F[LBQI`zq
if (data[j] < data[lowIndex]) { RX'(
l
lowIndex = j; HA| YLj?|g
} y 2bZo'Z
} dI3U*:$X
SortUtil.swap(data,i,lowIndex); dLLF#N
} )!'SSVaRs
} @X:P`?("^
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} zUeS7\(l
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Shell排序: :*1bhk8~
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package org.rut.util.algorithm.support; Jjv,
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import org.rut.util.algorithm.SortUtil; 0]&~ddL
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/** .Gw;]s3
* @author treeroot UW!!!
* @since 2006-2-2 lf&g *%?1
* @version 1.0 ]h,XRD K
*/ +v/_R{ M
public class ShellSort implements SortUtil.Sort{ 9 u{#S}c`
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/* (non-Javadoc) |nIm$ p'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7i`8 c =.
*/ :`25@<*u
public void sort(int[] data) { -W2 !_
for(int i=data.length/2;i>2;i/=2){ L]cZPfI6
for(int j=0;j insertSort(data,j,i); a8''t_Dp
} vk&C'&uV9@
} IZ"d s=w
insertSort(data,0,1); vn7<>k>dx
} >O?5mfMK
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/** 4 QD.'+L
* @param data !>TH#sU$
* @param j s+l)Q
* @param i d
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*/ m
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private void insertSort(int[] data, int start, int inc) { D3N\$ D
int temp; 6Dwj^e0
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 6p])2]N>p
} W&qE_r
} %&0_0BU
} 8V?O=3<a
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} B/7c`V
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快速排序: va[@XGaC3
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package org.rut.util.algorithm.support; X H,1\J-S
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import org.rut.util.algorithm.SortUtil; Q0s!]Dk
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/** 8wMu^3r
* @author treeroot &N.D!7X
* @since 2006-2-2 u6j\@U6 I
* @version 1.0 q3<Pb,Z
*/ :=3Ty]e
public class QuickSort implements SortUtil.Sort{ }j;*7x8(
*DcJ).
/* (non-Javadoc) :_X9x{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eTw sh]
*/ v47Y7s:uQ
public void sort(int[] data) { hi^@969
quickSort(data,0,data.length-1); ~RgO9p(dY
} Us P1bh4
private void quickSort(int[] data,int i,int j){ E|P
int pivotIndex=(i+j)/2; !lpKZG
file://swap !36jtKdM
SortUtil.swap(data,pivotIndex,j); #-r,;
74i
int k=partition(data,i-1,j,data[j]); }}y~\TB~}
SortUtil.swap(data,k,j); ))JbROBU,
if((k-i)>1) quickSort(data,i,k-1); ~\<aj(m(|
if((j-k)>1) quickSort(data,k+1,j); 7#wdBB%
[<CIh46S.
} os9X)G
/** 8K$q6V%#
* @param data lC):$W
* @param i
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* @param j MZ]#9/
* @return SkU'JM7<95
*/ G;Jqby8d
private int partition(int[] data, int l, int r,int pivot) { ^U OVXRn
do{ tj7{[3~-[
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot);
_8]hn[
SortUtil.swap(data,l,r); C{^U^>bU
} HuzHXn)
while(l SortUtil.swap(data,l,r); `tZ m
return l; csABfxib
} ay4E\=k
%\<SSp^n
} a$-:F$z
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改进后的快速排序: zI1-l9 o
rRgP/E#_
package org.rut.util.algorithm.support; ksb.]P d.
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import org.rut.util.algorithm.SortUtil; *PEk+e
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/** " b?1Yc-
* @author treeroot ` 9iB`<
* @since 2006-2-2 gK7bP'S8H
* @version 1.0 St 4YNS.|
*/ O{@m ,uY
public class ImprovedQuickSort implements SortUtil.Sort { >AFX}N#
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private static int MAX_STACK_SIZE=4096; Ut|G.%1Vd%
private static int THRESHOLD=10; -SO`wL NV
/* (non-Javadoc) ]m&cVy&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k?[|8H~2C
*/ "eRf3Q7w:
public void sort(int[] data) { *|97 g*G(
int[] stack=new int[MAX_STACK_SIZE]; fjGYp
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int top=-1; /8](M5X]f
int pivot; 5BWO7F0v"
int pivotIndex,l,r; vuP.V#
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stack[++top]=0; x.J%
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stack[++top]=data.length-1; k(As^'>
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while(top>0){ e&*< "WN
int j=stack[top--]; |^ K"#K
int i=stack[top--]; h0;PtQb1
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pivotIndex=(i+j)/2; --X1oC52A
pivot=data[pivotIndex]; ea7l:(C
X"'c2gaa_
SortUtil.swap(data,pivotIndex,j); 8~q%H1[I\N
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file://partition <Vu/6"DP
l=i-1; {Ftz4y)6
r=j; +=Xgi$
do{ 02|f@bP.
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Gn+3OI"
SortUtil.swap(data,l,r); $mS]K!\
} 39j "z8n
while(l SortUtil.swap(data,l,r); I)9un|+,y
SortUtil.swap(data,l,j); !+Ia#(
\:`'!X1*U
if((l-i)>THRESHOLD){ r&qFv)0!`
stack[++top]=i; OanH G
stack[++top]=l-1; r@j$$Pk`
} " w0[l"3V
if((j-l)>THRESHOLD){ DH@})TN*O
stack[++top]=l+1; RfM
uWo:
stack[++top]=j; -&3WN!egq
} ?$:;hGO.<~
7F=Xn@ _
} EKwA1,Xz
file://new InsertSort().sort(data); x^s2bb
insertSort(data); Cq-d,
} !sbKJ+V7
/** 4d\"gk
* @param data >=<qAkk
*/ '%k<? *
private void insertSort(int[] data) { c_oI?D9
int temp; [;IW'cXNq
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <M//zXa
} EqY e.dF,
} H\BhAf
} gc%aaYf>
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} q '6gj
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归并排序: a-P'h1hbH
ML6V,-KU
package org.rut.util.algorithm.support; >o\s'i[
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import org.rut.util.algorithm.SortUtil; AYB
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/** t")+L{
* @author treeroot %&D,|Yl6
* @since 2006-2-2 Cpyv@+;D
* @version 1.0 hJ)>BeH0
*/ HLjXH#ry
public class MergeSort implements SortUtil.Sort{ W6kDQ&q
) ?AlQA
/* (non-Javadoc) ppwjr
+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y6_%HYI$
*/ < C{-ph
public void sort(int[] data) { MT`gCvoF4P
int[] temp=new int[data.length]; a,B2;4"
mergeSort(data,temp,0,data.length-1); )+'De
} 1-HL#y*7$
}]8n3&*
private void mergeSort(int[] data,int[] temp,int l,int r){ 2!6+>nvO
int mid=(l+r)/2; 0zSRk]i.f
if(l==r) return ; dr25;L? B
mergeSort(data,temp,l,mid); FW?zJ
mergeSort(data,temp,mid+1,r); \t'v-x>2y5
for(int i=l;i<=r;i++){ )p,uZ`~v
temp=data; *6Ojv-
G|5
} bp'qrcFuiL
int i1=l; (WW*yv.J
int i2=mid+1; >g ):xi3qK
for(int cur=l;cur<=r;cur++){ aY/msplC
if(i1==mid+1) $~#N1
data[cur]=temp[i2++]; 994
else if(i2>r) ."N`X\
data[cur]=temp[i1++]; x2P}8Idg?A
else if(temp[i1] data[cur]=temp[i1++]; me-:A:si
else /3MTutM|<X
data[cur]=temp[i2++]; lnXb]tm;
} pt"yJtM'P
} qbrf;`
yMdAe>@
} 6usy0g
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改进后的归并排序: Lk%u(duU^
6$]p;}#
package org.rut.util.algorithm.support; _h@s)"
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import org.rut.util.algorithm.SortUtil; 5if4eitS
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/** e ]@Ex
* @author treeroot (}$~)f#s
* @since 2006-2-2 6mawcK:7
* @version 1.0 qDOJ;>I
*/ 2u0dn?9\
public class ImprovedMergeSort implements SortUtil.Sort { C'iJFfgR
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private static final int THRESHOLD = 10; .EOHkhn
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/* (kECV8)2
* (non-Javadoc) ZBDEE+8e
* (-lu#hJ`&r
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N8$MAW
*/ /xK5%cE>B
public void sort(int[] data) { O@.afk"{
int[] temp=new int[data.length]; nm[ yp3B
mergeSort(data,temp,0,data.length-1); ##%R|P3
} R]oi&"H@r)
T?!&a0
private void mergeSort(int[] data, int[] temp, int l, int r) { O2W EA
int i, j, k; ?[[K6v}q{
int mid = (l + r) / 2; 4JF8S#8B
if (l == r) \\j98(i
return; 8QFn/&Ql$B
if ((mid - l) >= THRESHOLD) i.4L;(cg
mergeSort(data, temp, l, mid); v>vU]6l
else Rp#9T?i``[
insertSort(data, l, mid - l + 1); Ivw+U-Mz
if ((r - mid) > THRESHOLD) $gYy3y
mergeSort(data, temp, mid + 1, r); QK+s}ny
else MoKGnb
insertSort(data, mid + 1, r - mid); G4!$48
(#w8/@JxF
for (i = l; i <= mid; i++) { J- %YmUc)
temp = data; rUunf'w`e1
} qXHr[C"
for (j = 1; j <= r - mid; j++) { zTFfft<
temp[r - j + 1] = data[j + mid]; -0KQR{LI
} $Cr? }'a
int a = temp[l]; )~hsd+ 0t
int b = temp[r]; !Ua74C
for (i = l, j = r, k = l; k <= r; k++) { R~-r8dWcw
if (a < b) { F",S}cK*MH
data[k] = temp[i++]; <h_lc}o/
a = temp; ;pU#3e+P8
} else { L{>XT
data[k] = temp[j--]; X#s:C=q1
b = temp[j]; !}sYPz]7!
} OL{U^uOhY
} m6qmZ2<
} u8Ul +u
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/** |TOz{
* @param data $qN+BKd]3
* @param l cJ 5":^O
* @param i i!/V wGg
*/ C[j'0@~V:B
private void insertSort(int[] data, int start, int len) { T)o)%Yv
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); `jR = X
} URW#nm?
} M5C}*c9
} 9v(&3,)a
} 5a9PM(
v=b`kCH}
堆排序: xg~
Baun
MSPzOJQPy
package org.rut.util.algorithm.support; K5x&:z
#]G$o?@Y=^
import org.rut.util.algorithm.SortUtil; 8-cB0F=j_
a#X[V5|6Q
/** s[:e '#^
* @author treeroot -\;x>=#B
* @since 2006-2-2 e![|-m%
* @version 1.0 IX eb6j8
*/ thk33ss:
public class HeapSort implements SortUtil.Sort{ CtbmX)vE
;9,<&fe
/* (non-Javadoc) ;0V{^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XVi?-/2
*/ X*F#=.lh
public void sort(int[] data) { }U$Yiv
MaxHeap h=new MaxHeap(); A_: Bz:
h.init(data); YQ>M&lnQ<
for(int i=0;i h.remove(); [guJd";
System.arraycopy(h.queue,1,data,0,data.length); ~4th;#'
} @?_<A%hz
S#{e@ C
private static class MaxHeap{ M%f96XUM
i(q%EMf
void init(int[] data){ H*_:IfI!
this.queue=new int[data.length+1]; #uNQ+US0
for(int i=0;i queue[++size]=data; c ?mCt0Cg
fixUp(size); Bb];qYuCO
} .bbl-a/
3
} -yt[0
7O{c>@\
private int size=0; /?l@7
P@'<OI
private int[] queue; RE]u2R6Y
,.u7([SGm
public int get() { s OD>mc#%Y
return queue[1]; _yTGv-
} ' } rUbJo
8D
eRs#
public void remove() { z65|NO6JW.
SortUtil.swap(queue,1,size--); SP9_s7LL
fixDown(1); x72bufd
} ' jFSv|g+0
file://fixdown '+BcPB?E
private void fixDown(int k) { \H+/D &M
int j; 4os7tx
while ((j = k << 1) <= size) { Wa~'p+<c~b
if (j < size %26amp;%26amp; queue[j] j++; pR2QS
if (queue[k]>queue[j]) file://不用交换 ev>gh0
break; 1R)4[oYN\<
SortUtil.swap(queue,j,k); j+Nun
k = j; KFHn)+*"
} UJ1Ui'a(!!
} D0,U2d
private void fixUp(int k) { 2.O;
while (k > 1) { i'|rx2]e
int j = k >> 1; xtL_,ug
if (queue[j]>queue[k]) Z^9;sb,x
break; 7g3vh%G.
SortUtil.swap(queue,j,k); *M;!{)m?
k = j; -~eNC^t;W
} !+&"y K@J
} Kx?3 ]
qve2?,i8hM
} y yfm
j,QeL
} ~a&s5E
{
]O s!=rt
SortUtil: ),5^b l/
<R>qOX8
package org.rut.util.algorithm; 9RwD_`D(MN
HF}%Ow
import org.rut.util.algorithm.support.BubbleSort; } pE<P;\]k
import org.rut.util.algorithm.support.HeapSort; ;1}~(I#Y
import org.rut.util.algorithm.support.ImprovedMergeSort; qsXK4`
import org.rut.util.algorithm.support.ImprovedQuickSort; jdV E/5
import org.rut.util.algorithm.support.InsertSort; !"B0z+O>
import org.rut.util.algorithm.support.MergeSort; h9c54Ux
import org.rut.util.algorithm.support.QuickSort; o~H4<ayy
import org.rut.util.algorithm.support.SelectionSort; Da5Zz(
import org.rut.util.algorithm.support.ShellSort; ]+Yd#<j(u
A-r-^S0\
/** hZ-No
* @author treeroot UOH2I+@V
* @since 2006-2-2 5+dQGcE@
* @version 1.0 V*SKWP
*/ +=hiLfnE
public class SortUtil { M >Yx_)<U
public final static int INSERT = 1; :9q=o|T6D
public final static int BUBBLE = 2; # 4_'%~-e
public final static int SELECTION = 3; zbZ0BD7e
public final static int SHELL = 4; \D>vdn"Lx
public final static int QUICK = 5; l)GV&V
public final static int IMPROVED_QUICK = 6; Ee;&;Q,O.z
public final static int MERGE = 7; D%kY
public final static int IMPROVED_MERGE = 8; P31}O2 Nh
public final static int HEAP = 9; i ]gF
6:&
L=ZKY
public static void sort(int[] data) { K.G}*uy
sort(data, IMPROVED_QUICK); F`-|@k
} w;}pebL:
private static String[] name={ ECqcK~h#E
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Y!* \=h6h
}; B!H46w~
54s+4R FL
private static Sort[] impl=new Sort[]{ $J&wwP[
new InsertSort(), ENm\1
new BubbleSort(), :%Na-j9hV)
new SelectionSort(), Xu $_%+46
new ShellSort(), @x?7J@:
new QuickSort(), v.H00}[.
new ImprovedQuickSort(), i6M_Gk}
new MergeSort(), Au,xIe!t
new ImprovedMergeSort(), msOk~ZPE6\
new HeapSort() OoTMvZP[
}; vBAds
7H~StdL/>
public static String toString(int algorithm){ i]!CH2\
return name[algorithm-1]; UbKdB
} TWkuR]5
W-zD1q~0?
public static void sort(int[] data, int algorithm) { _P.+[RS@
impl[algorithm-1].sort(data); p*E_Po
} ) D:M_T2
(5rH72g(
public static interface Sort { 4tU3+e5h
public void sort(int[] data); 2i`N26On
} H5uWI
6O8'T`F[
public static void swap(int[] data, int i, int j) { 0\#uxzdhJ
int temp = data; DZKVZ_q
data = data[j]; O?|opD
data[j] = temp; q\*",xZxwz
} X>l
} @1ZLr