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。 ]zj9A]i:a
插入排序: [~-9i&Z
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package org.rut.util.algorithm.support; _ky,;9G]
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import org.rut.util.algorithm.SortUtil; qkt0**\
/** o3Yb7h9
* @author treeroot O@u?h9?cf>
* @since 2006-2-2 zL$@`Eh-KP
* @version 1.0 UtPLI al
*/ P\yDa*m
public class InsertSort implements SortUtil.Sort{ aZ2!i
fsJ9bQm/
/* (non-Javadoc) $Z.7zH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '8Q]C*Z
*/ <'qeXgi
public void sort(int[] data) { L^E[J`
int temp; Huy5-[)15
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); o)Iff)m$
} 7|{}\w(I
} l==``
} Sh/T ,
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} 1pt%Kw*@j
cJ{ Nh;"
冒泡排序: (61EDKNd9
d ^^bke$~
package org.rut.util.algorithm.support; K~c=M",mW
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import org.rut.util.algorithm.SortUtil; -&NN51-d\j
lpQSup
/** "3Uv]F
* @author treeroot GC>e26\:
* @since 2006-2-2 tX5"UQA
* @version 1.0 O[I\A[*
*/ BUWqIdg
public class BubbleSort implements SortUtil.Sort{ 4 8:>NW
;|pBFKx
/* (non-Javadoc) q)Lu_6 mg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KV}FZ3jY
*/ 695V3R 7
public void sort(int[] data) { @Fluc,Il
int temp; ",^Mxm{
for(int i=0;i for(int j=data.length-1;j>i;j--){ =:&ly'QB&
if(data[j] SortUtil.swap(data,j,j-1); !j:9`XD|
} ).Fpgxs
} I/a/)No
} >hPQRd
} =7w\
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d@ i}-;
} C69q&S,
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选择排序: zfc'=ODX
]QpWih00V
package org.rut.util.algorithm.support; j<Bkj/
<L"GqNuRQ
import org.rut.util.algorithm.SortUtil; byLft1
PMNjn9d
/** o9JMH.G
* @author treeroot ;g @4|Ro
* @since 2006-2-2 +wEac
g>>E
* @version 1.0 gLE:g5v6
*/ zbk q
public class SelectionSort implements SortUtil.Sort { UaWl6 Y&Vu
Km(n7Ah"
/* ~rDZ?~%
* (non-Javadoc) ]~aF2LJ_q
* i(AT8Bo2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iH/6M
*/ [U5\bX@$
public void sort(int[] data) { }
ud0&Oe{
int temp; l|/ep:x8
for (int i = 0; i < data.length; i++) { #:[t^}
int lowIndex = i; mVVD!
for (int j = data.length - 1; j > i; j--) { (#Wu#F1;
if (data[j] < data[lowIndex]) { KVT-P};jy*
lowIndex = j; OW3sS+y
} |C!ox hu<
} MRb-H1+Xf
SortUtil.swap(data,i,lowIndex); tnPv70m
} K('hC)1
} 0w)^)
<kGU,@6PF
} ,q}MLTSi
l038%U~U!
Shell排序: 9QDFEYG
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package org.rut.util.algorithm.support; \.-}adKg
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import org.rut.util.algorithm.SortUtil; ~/98Id}v
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/** -Z 4e.ay5
* @author treeroot U)E(`{p]
* @since 2006-2-2 bgK'{_o-
* @version 1.0 _F$aUtb%O
*/ .(^ ,z&
public class ShellSort implements SortUtil.Sort{ G LIi6
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/* (non-Javadoc) wVEm:/;z&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IOqwCD[
*/ P} 0%-JC
public void sort(int[] data) { 2E}*v5b,
for(int i=data.length/2;i>2;i/=2){ v^d]~!h
for(int j=0;j insertSort(data,j,i); {bJ`~b9e
} z([ v%zf
} ;<j0f~G`
insertSort(data,0,1); e[&L9U6GW-
}
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,*7 (%k^`
/** 5hQE4/hH
* @param data ;[=8B\?
* @param j 0w&27wW
* @param i G!>z;5KuS
*/ B9NWW6S
private void insertSort(int[] data, int start, int inc) { {>DEsO
int temp; 05b_)&4R
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); __|+w<]
} E5I"%9X0H
} /v-6WSN
} 925|bX6I
Ji>o!
} l49*<nkmq
mOy^vMa
快速排序: =cm~vDl[
;7?kl>5]
package org.rut.util.algorithm.support; 2+QY hdw
5=v}W:^v.
import org.rut.util.algorithm.SortUtil; x4;"!Kq\
Y2n!>[[.
/** -likj#Z
* @author treeroot b{L/4bu
* @since 2006-2-2 d1AioQ9
* @version 1.0 5-aj2>=7
*/ W6?pswQ
public class QuickSort implements SortUtil.Sort{ G,o6292hj
gy#/D& N[
/* (non-Javadoc) wO'TBP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #_6I w`0
*/ ]P.'>4
public void sort(int[] data) { F`gi_;c
quickSort(data,0,data.length-1); k5:G-BQ:
} i~I%D%;
private void quickSort(int[] data,int i,int j){ 7"sD5N/>uh
int pivotIndex=(i+j)/2; 6$kq aS##
file://swap ,l!Ta"
SortUtil.swap(data,pivotIndex,j); }+.}J
a%kQl^I4
int k=partition(data,i-1,j,data[j]); YB(Q\hT~\;
SortUtil.swap(data,k,j); fI&t]
if((k-i)>1) quickSort(data,i,k-1); W-mQjJ`,B
if((j-k)>1) quickSort(data,k+1,j); (gP)%
=/s>Q l
} &,zq%;-f
/** >/l? g5{
* @param data W42iu"@
* @param i w>pq+og&
* @param j &e @2
* @return ^2Fei.?T.
*/ y0sR6TY)f
private int partition(int[] data, int l, int r,int pivot) { ,:%CB"J
do{ ?zh9d%R
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 't:;irLW.
SortUtil.swap(data,l,r); ojcA<60
'
} Q6PHpaj
while(l SortUtil.swap(data,l,r); nyQ&f'<
return l; mk.9OhYY
} 24
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_
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} e7^mmm
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改进后的快速排序: dBYmiF!+
3@kf@Vf
package org.rut.util.algorithm.support; *=8JIs A>!
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import org.rut.util.algorithm.SortUtil; J l(&!?j
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/** |n2qVR,
* @author treeroot \:b3~%Fz
* @since 2006-2-2 z06r6
* @version 1.0 NP0\i1P>.?
*/ `` ,fodA8
public class ImprovedQuickSort implements SortUtil.Sort { zBCtd1Xrni
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private static int MAX_STACK_SIZE=4096; <CS(c|7
private static int THRESHOLD=10; <^VJy5>
/* (non-Javadoc) ). <-X^@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "Lzi+1
*/ (l\1n;s*B
public void sort(int[] data) { 2<i!{;u$qL
int[] stack=new int[MAX_STACK_SIZE]; ?:vv50
WA5 kg\
int top=-1; Pr3qo4t.L
int pivot; *1uKr9
int pivotIndex,l,r; R cAwrsd
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stack[++top]=0; U_Vs.M.p
stack[++top]=data.length-1; E%yNa]\P
N@2dA*T,
while(top>0){ (SWYOMo"
int j=stack[top--]; Jb0`42
int i=stack[top--]; q8FTi^=Kb
B~6&{7xc%
pivotIndex=(i+j)/2; Hkk/xNP
pivot=data[pivotIndex]; <lgYcdJ
!<j'Ea
SortUtil.swap(data,pivotIndex,j); @'w"R/,n-@
_>5(iDW0
file://partition .7Dtm<K#
l=i-1; sQ=]NF)\
r=j; xu>9(,l
do{ \RNNg
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Q!o'}nA
SortUtil.swap(data,l,r); s6H]J{1F
} Cl5uS%g
while(l SortUtil.swap(data,l,r); D60aH!ft
SortUtil.swap(data,l,j); FTX=Wyr
SbND
Y{5RO
if((l-i)>THRESHOLD){ Vrjc~>X
stack[++top]=i; "fQ~uzg="
stack[++top]=l-1; 6o!!=}'E[
} aEFJ;n7m
if((j-l)>THRESHOLD){ %oF}HF.
stack[++top]=l+1; !-z'2B*:^
stack[++top]=j; pf2[,v/
} tnV/xk#!
qt"G[9;
} HeK/7IAqp
file://new InsertSort().sort(data); zbXI%
insertSort(data); zE336
} 10G}{
/** 0m7Y>0wC6T
* @param data >] qc-{>&
*/ ~De"?
private void insertSort(int[] data) { Yab%/z2:
int temp; ~t@cO.c
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); n#/_Nz
} 2;[D;Y}
} Kh"?%ZIa
} 6~0$Z-);(
@*F"Q1 wI
} iMt:9|yF}8
_ ?TN;
归并排序: \(~y? l
_ftI*ni:<
package org.rut.util.algorithm.support; [NQOrcAQ
#&cI3i
import org.rut.util.algorithm.SortUtil; n?oW < &
D_?K"E=fw
/** 2{M^,=^>
* @author treeroot 062,L~&E
* @since 2006-2-2 Xk:OL,c
* @version 1.0 /;{P}-H`ei
*/ xpNH?#&
public class MergeSort implements SortUtil.Sort{ LU+3{O5y
,c$,!.r
/* (non-Javadoc) jy7\+i
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Pih tf4i
*/ ke{8 ^X~#
public void sort(int[] data) { +_7*iJtD5
int[] temp=new int[data.length]; BK*x] zG$
mergeSort(data,temp,0,data.length-1); ,t}vz 7
} D,m]CK'
*RT>`,t/
private void mergeSort(int[] data,int[] temp,int l,int r){ 4p e'06:
int mid=(l+r)/2; UT>s5C
if(l==r) return ; W"724fwu&
mergeSort(data,temp,l,mid); s.EI`*xylY
mergeSort(data,temp,mid+1,r); >PB4L_1
for(int i=l;i<=r;i++){ ?=>+LqP
temp=data; :Y-{Kn6`_
} >82@Q^O
int i1=l; :s=NUw_^
int i2=mid+1; 832v"kCD
for(int cur=l;cur<=r;cur++){ 6Vww;1J
if(i1==mid+1) tM2)k+fg
data[cur]=temp[i2++]; J5*tJoCYS
else if(i2>r) 2<li7c59
data[cur]=temp[i1++]; XttqOf
else if(temp[i1] data[cur]=temp[i1++]; SH3|sXH<
else UYFwS/ RW}
data[cur]=temp[i2++]; uB |Ss
} s~X+*@.
} W>!_|[a
o5xAav"+>
} `J]fcE%T0R
^
K|;~}P
改进后的归并排序: NxSu3e~PS
u?>B)PW
package org.rut.util.algorithm.support; zs%Hb48V
h H <J,Wn
import org.rut.util.algorithm.SortUtil; Z -,J)gW
M@h|bN
/** ~i@Y|38C
* @author treeroot -yR.<KnL
* @since 2006-2-2 rX*H)3F
* @version 1.0 ?in|qevL
*/ 'jmTXWq*
public class ImprovedMergeSort implements SortUtil.Sort { jxiC
Kx,G
6Z#\CixG
private static final int THRESHOLD = 10; >*@y8u*
$=5=NuX
/* yvgrIdEP
* (non-Javadoc) IC6gU$e
* GQ*wc?f3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DvPlV q~
*/ ex+\nD>t4
public void sort(int[] data) { Ad:TYpLD
int[] temp=new int[data.length]; cHcmgW\4
mergeSort(data,temp,0,data.length-1); KQ`qpX^d
} \|]Z8t7
cUqke+!
private void mergeSort(int[] data, int[] temp, int l, int r) { kxp);
int i, j, k; fq5_G~c=
int mid = (l + r) / 2; z>jUR,!GT
if (l == r) T|6jGZS^|W
return; Glxuz0]
if ((mid - l) >= THRESHOLD) ;l&4V
mergeSort(data, temp, l, mid); w$H^q
!(
else SF}<{x_
insertSort(data, l, mid - l + 1); .~Fp)O:!
if ((r - mid) > THRESHOLD) RaWG w
mergeSort(data, temp, mid + 1, r); _$wmI/_JM
else &ZghMq~
insertSort(data, mid + 1, r - mid); AtU v71D:
xY+VyOUs
for (i = l; i <= mid; i++) { &LF`
W
temp = data; UbEb&9}
} fMGbODAvY
for (j = 1; j <= r - mid; j++) {
%ObLWH'
temp[r - j + 1] = data[j + mid]; nl(WJKq'
} 'xhcuVl
int a = temp[l]; 56e r`=ms
int b = temp[r]; S-7'it!1
for (i = l, j = r, k = l; k <= r; k++) { D?C)BcN
if (a < b) { Oy<5>2^P
data[k] = temp[i++]; '"?C4mbSl
a = temp; >$ NDv
} else { aFe`_cnG
data[k] = temp[j--]; fLSXPvm
b = temp[j]; {r>.G7P6
} p8kr/uMP ;
} ZunCKc
} ]W Zq^'q.
!
iptT(2
/** V?P,&c?84
* @param data i^_#%L
* @param l GK9/D|h4
* @param i /,MJq#@K
*/ iT;@bp
private void insertSort(int[] data, int start, int len) { 2:BF[c`
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); `}m Q
} ~`GhS<D
} l"q1?kaVg
} [F_/2+e
} Ul_M3"Z
:LWn<,4F&
堆排序: hY*0aZ|(
%*o8L6Hn
package org.rut.util.algorithm.support; kW`r= u
0x11
vr!
import org.rut.util.algorithm.SortUtil; TDg@Tg0
zOHypazOTq
/** 6oinidB[l
* @author treeroot ~XydQJ^*
* @since 2006-2-2 y8s!M
* @version 1.0 0l=+$&D
*/ hKNY+S})g
public class HeapSort implements SortUtil.Sort{ 3IR
^
>#}2J[2HQ
/* (non-Javadoc) hH->%*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C{Asp
*/ ]WUC:6x
public void sort(int[] data) { T"T;`y@(
MaxHeap h=new MaxHeap();
0G <hn8>
h.init(data); KECElK3uj
for(int i=0;i h.remove(); wQ+dJ3b$
System.arraycopy(h.queue,1,data,0,data.length); `_5GG3@Ff
} 'r} zY-FM`
GIftrYr
private static class MaxHeap{ #fs|BV
!
=s}Xy_+:
void init(int[] data){ >Z Ke
this.queue=new int[data.length+1]; xMs]Hs
for(int i=0;i queue[++size]=data; [4+q+
fixUp(size); ?$z.K>S5
} DjCx~@
} maSgRf[g
~%ozgzr^
private int size=0; `@`1pOb
G{x[uE2X&f
private int[] queue; V5D2\n3A
y69J%/c
ra
public int get() { PT9v*3Bq~
return queue[1]; "Vd_CO
} =l942p
-Dzsa
public void remove() { M R'o{?{e`
SortUtil.swap(queue,1,size--); x.$1<w64t
fixDown(1);
1;| LI?
} uH\kQ9f
file://fixdown %do1i W
private void fixDown(int k) { |@j_2Q,
int j; r;iV$Rq!
while ((j = k << 1) <= size) { Wv K(G3
if (j < size %26amp;%26amp; queue[j] j++; $_j1kx$
if (queue[k]>queue[j]) file://不用交换 uCzii o`S
break; {<w
+3Va
SortUtil.swap(queue,j,k); vz`@x45K
k = j; h ?#@~
} dEp/dd~(&
} 6J%iZ
private void fixUp(int k) { ])y{BlZ
while (k > 1) { q42FPq
int j = k >> 1; *j*Du+
if (queue[j]>queue[k]) ;vO@m!h}U
break; 3vJ12=
SortUtil.swap(queue,j,k); K5ZnS`c;
k = j; cfoYnM
} ;Gm>O7"|@
} K6pw8
"D> ]ES%5
} V,QwN&
a&/HSf_G
} x3p9GAd#
?ow'^X-
SortUtil: & 5
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&?a.mh/8[[
package org.rut.util.algorithm; mf*Nr0L;J
/)1v9<vM"
import org.rut.util.algorithm.support.BubbleSort; ySruAkw%
import org.rut.util.algorithm.support.HeapSort; ;9rTE|n
import org.rut.util.algorithm.support.ImprovedMergeSort; B1w0cS%%:
import org.rut.util.algorithm.support.ImprovedQuickSort; ~%aJFs
import org.rut.util.algorithm.support.InsertSort; O@`J_9
import org.rut.util.algorithm.support.MergeSort; 7,_-XV2
import org.rut.util.algorithm.support.QuickSort; \8_V(lU
import org.rut.util.algorithm.support.SelectionSort; J'7 y
import org.rut.util.algorithm.support.ShellSort; Pe,;MP\2
T0L+z/N_m.
/** 0_V*B[V
* @author treeroot ^_w*XV
* @since 2006-2-2 4]"w b5%
* @version 1.0 n2na9dX)w
*/ 0}-#b7eR
public class SortUtil { -><QFJ
public final static int INSERT = 1; ~|=rwDBZ8l
public final static int BUBBLE = 2; ]S]"`;Wh
public final static int SELECTION = 3; 1E^{B8cm
public final static int SHELL = 4; j&llrN
public final static int QUICK = 5; r03I*b
public final static int IMPROVED_QUICK = 6; v|y<_Ya
public final static int MERGE = 7; ris;Iu^v0
public final static int IMPROVED_MERGE = 8; j/`Up
public final static int HEAP = 9; 3#<'[TF00t
._K$0U!
public static void sort(int[] data) { bQ=s8'
sort(data, IMPROVED_QUICK); 4 f3=`[%
} |?|K\UF(Y
private static String[] name={ .='3bQ(UZ4
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" z-)*Q
}; 7Ff?Ysr
E.4n}s
private static Sort[] impl=new Sort[]{ o>$|SU!a
new InsertSort(), |Pj9ZG#
new BubbleSort(), I4CHfs"ar
new SelectionSort(), v?%0~!
new ShellSort(), Y"s
)u7
new QuickSort(), t0I>5#*WU
new ImprovedQuickSort(), kYmo7
new MergeSort(), u&
AQl.u
new ImprovedMergeSort(), D'85VZEFyo
new HeapSort() #Ul4&QVeg
}; >9(7h&[Y
B>ge,
}{
public static String toString(int algorithm){ K]%N-F>r
return name[algorithm-1]; vx PDC~3;
} h<Jc;ht
%e(9-M4*
public static void sort(int[] data, int algorithm) { $:PF9pY(
impl[algorithm-1].sort(data); d"LoK,p#
} A-X
ef^Cc)S-Q
public static interface Sort { mQmBf|Rl
public void sort(int[] data); J&n ^y
} $hyqYp"/;
/0Rt +`
public static void swap(int[] data, int i, int j) { `WP@ZSC6
int temp = data; ],H1
data = data[j]; [0d-CEp[
data[j] = temp; %H 8A=
} 9k(*?!\;
} C+X)">/+L