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。 ?ILjt? X8
插入排序: -K8F$\W
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package org.rut.util.algorithm.support; &&LB0vH!J
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import org.rut.util.algorithm.SortUtil; i_r708ep6
/** jpZq]E9`P
* @author treeroot Pn.DeoHme
* @since 2006-2-2 {=Jo!t;f
* @version 1.0 coPdyw'9&
*/ Ck%if
public class InsertSort implements SortUtil.Sort{ Q_iN/F
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/* (non-Javadoc) ]yqE6Lf9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EH M 59s|B
*/ }#4Ek8nFR
public void sort(int[] data) { &?1^/]'"r
int temp; <~w 3[i=
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ln8NcAEx
} /2/aMF(J
} 5=#d#dDc
} QT%vrXzz
ao .vB']T
} a.?U$F
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冒泡排序: !plu;w
OQ
w O7Z
package org.rut.util.algorithm.support; Y[R>?w
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import org.rut.util.algorithm.SortUtil; `\;Z&jlpT
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/** j}
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* @author treeroot f#GMJ mCQs
* @since 2006-2-2 hjFht+j1
* @version 1.0 7D:rq 8$\
*/ 0pEM0M
public class BubbleSort implements SortUtil.Sort{ (&v|,.c^)1
nIfAG^?|*
/* (non-Javadoc) F|5Au>t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S|LY U!IWZ
*/ 5%fWX'mS
public void sort(int[] data) { _JNYvngm
int temp; C8Mx>6
for(int i=0;i for(int j=data.length-1;j>i;j--){ A4#FAFy
if(data[j] SortUtil.swap(data,j,j-1); N#e9w3Rli
} PO6yEr
} {}Is&^3Z
} ~a`xI
} CX\XaM)l
Y0EX{oxt1
} aL+>XN
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选择排序: Mb\(52`)Q
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package org.rut.util.algorithm.support; GtZ.'?-
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import org.rut.util.algorithm.SortUtil; 'OP0#`6`
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/** W,CAg7:*
* @author treeroot ' F9gp!s8~
* @since 2006-2-2 [Eu)~J*
* @version 1.0 p0zC(v0*
*/ "Z,T%]
public class SelectionSort implements SortUtil.Sort { l,l6j";ohd
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/* h\3-8m
* (non-Javadoc) Y2.zT6i
* Y\B6c^E)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $)o0{HsL+
*/ Mz2TwU_
public void sort(int[] data) { .RFH@''
int temp; >8OY6wb
for (int i = 0; i < data.length; i++) { F4z#u2~TC
int lowIndex = i; $m*Gu:#xm&
for (int j = data.length - 1; j > i; j--) { T7.SjR6X>
if (data[j] < data[lowIndex]) { Khc^q*|C)
lowIndex = j; "P(obk
} $rr@3H+
} v)_FiY QQ6
SortUtil.swap(data,i,lowIndex); QdQ1+*/+U
} Y.Z:H!P);$
} K@cWg C
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} U1)Zh-aR
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Shell排序: S-gO
@/^mFqr2
package org.rut.util.algorithm.support; zN]%p>,)HB
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import org.rut.util.algorithm.SortUtil; m=^]93+
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/** kln)7SzPuk
* @author treeroot vVa|E#
[
* @since 2006-2-2 vMEN14;yH_
* @version 1.0
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*/ 8Ala31
public class ShellSort implements SortUtil.Sort{ 1eshuL
*.|%uf.
/* (non-Javadoc) EUcD[Rv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BPt? 3tC
*/ wDW%v@
public void sort(int[] data) { ml1%C%
for(int i=data.length/2;i>2;i/=2){ |M5#jVXj
for(int j=0;j insertSort(data,j,i); !R\FCAW[x
} !f52JQyh
} $'Mf$h
insertSort(data,0,1); s*yl&El/
} +#BOWz
_r\M}lDh*
/** hPBBXj/=
* @param data &5b3k[K"
* @param j msfE;
* @param i J({D~
*/ YuknZ&Q
private void insertSort(int[] data, int start, int inc) { /R=MX>JA;
int temp; 2m yxwA5
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); b=:u d[h
} 04;s@\yX4
} 4FRi=d;mP
} c6 mS
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} h`1<+1J9
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快速排序: o68i0aFW
Wmcd{MOS
package org.rut.util.algorithm.support; EC,`t*<
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import org.rut.util.algorithm.SortUtil; HFy9b|pjy
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/** ,jis@]:
* @author treeroot =cjO]
* @since 2006-2-2 ?=&S?p)-<
* @version 1.0 vFR*3$R
*/ 4{zy)GE|W
public class QuickSort implements SortUtil.Sort{ JJ?rVq1g
j;coP ehB
/* (non-Javadoc) b}0h()v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OriYt
*/ jj]\]6@+P
public void sort(int[] data) { ;n(f?RO3X
quickSort(data,0,data.length-1); (wZ!OLY%}
} ? F
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private void quickSort(int[] data,int i,int j){ /v5A)A$7
int pivotIndex=(i+j)/2; 8ex;g^e
file://swap V2T%tn;rp
SortUtil.swap(data,pivotIndex,j); 2Wluc37
EA6l11{Gk1
int k=partition(data,i-1,j,data[j]); o$.#A]Flb
SortUtil.swap(data,k,j); H"AL@=
if((k-i)>1) quickSort(data,i,k-1); ={P`Tve
if((j-k)>1) quickSort(data,k+1,j); [ZSC]w^
Dbn344s
} ye$_=KARP
/** <6 Rec^QF
* @param data ANu>*
* @param i ^)>( <6
* @param j PtW2S 1?j
* @return r4*H96l
*/ $Xlr@)%
private int partition(int[] data, int l, int r,int pivot) { *%KIq/V
do{ a#r{FoU{M8
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); d%'#-w'
SortUtil.swap(data,l,r); |@JTSz*Or
} x0Loid\f
while(l SortUtil.swap(data,l,r); @s-P!uCaT
return l; diJpbR^JP
} m1%rm-M
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} E! NtD).=S
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改进后的快速排序: `X@\Zv=}
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package org.rut.util.algorithm.support; ,6g{-r-2
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import org.rut.util.algorithm.SortUtil; %(eQ1ir +
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/** T/P\j0hR
* @author treeroot 9#:nlu9
* @since 2006-2-2 K.}jOm
* @version 1.0 ?Cf'IBpN
*/ mgx|5Otg
public class ImprovedQuickSort implements SortUtil.Sort { ?Xypn#OPt
Y`ip.Nx
private static int MAX_STACK_SIZE=4096; NzQvciJ@"
private static int THRESHOLD=10; }?Y -I>
w
/* (non-Javadoc) iptA#<Yj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~&)\8@2
*/ '69)m~B0a
public void sort(int[] data) { W$hCI)m(
int[] stack=new int[MAX_STACK_SIZE]; }NC$Ce
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int top=-1; ?l6yLn5si^
int pivot; .euAN8L
int pivotIndex,l,r; }}TPu8Rl
$GRw k>N
stack[++top]=0; ~wW]ntZm
stack[++top]=data.length-1; 2Cp4aTGv#
Bn&P@C$7
while(top>0){ &EV%g6
int j=stack[top--]; WS n>P7sY
int i=stack[top--]; YM_ [
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pivotIndex=(i+j)/2; fW2NYQP$:
pivot=data[pivotIndex]; x!GDS>
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SortUtil.swap(data,pivotIndex,j); /(s |'"6
1M??@@X
file://partition G)<B7-72;
l=i-1; )4uWB2ZRoi
r=j; fs#9~b3
do{ :.g/=Q(T~
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); !u]@Ru34
SortUtil.swap(data,l,r); ]j7`3%4uK
} qLLrR,:
while(l SortUtil.swap(data,l,r); GqCBD-@4v.
SortUtil.swap(data,l,j); =H;n$ -P
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if((l-i)>THRESHOLD){ cN&Ebn
stack[++top]=i; -rcEG!
stack[++top]=l-1; _oc6=Z
} g]&fyB#
if((j-l)>THRESHOLD){ -M=BD-_.h
stack[++top]=l+1; vOlfyH>
stack[++top]=j; W'vek uM
} Lld45Bayb
~>>_`;B
} A` _dj}UF
file://new InsertSort().sort(data); ;?HP/dZLz
insertSort(data); Xf&YcHo
} Gn
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/** eWv:wNouk
* @param data 8+w*,Ry`
*/ a+LK~mC*
private void insertSort(int[] data) { ,HDhP
int temp; x] wi&
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); s&nat4{B
} =p.avAuSn
} FA-cTF[,(
} xbCR4upS
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} V6dq8Z"h
y$7Ys:R~
归并排序: aWTurnee^
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package org.rut.util.algorithm.support; `:3nF'
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import org.rut.util.algorithm.SortUtil; ri4z^1\
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/** |Yw k
* @author treeroot A!!!7tj
* @since 2006-2-2 xT&~{,9
* @version 1.0 .\$A7DD+A
*/ b(N\R_IQ~
public class MergeSort implements SortUtil.Sort{ Wx-0Ip'9
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/* (non-Javadoc) =|AYT6z,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MUl7o@{'
*/ [#Apd1S_
public void sort(int[] data) { n32"cFPpT
int[] temp=new int[data.length]; _s@PL59,
mergeSort(data,temp,0,data.length-1); '-A;B.GV%
} 8zeeC
eI U
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private void mergeSort(int[] data,int[] temp,int l,int r){ }d;2[fR)
int mid=(l+r)/2; \ejHM}w3,
if(l==r) return ; tUH?N/qn
mergeSort(data,temp,l,mid); T=YVG@fm?
mergeSort(data,temp,mid+1,r); '9u?lA^9$
for(int i=l;i<=r;i++){ _(g0$vRP~
temp=data; ~-vCY
} $Z)u04;&@
int i1=l; +r"}@8/\1
int i2=mid+1; Q SF0?Puf
for(int cur=l;cur<=r;cur++){ rtAPkXJFM
if(i1==mid+1) >(P(!^[f
data[cur]=temp[i2++]; ~3M4F^
else if(i2>r) RYCiO,+
data[cur]=temp[i1++]; j17h_ a;
else if(temp[i1] data[cur]=temp[i1++]; vW eg1
else =cV|o]
data[cur]=temp[i2++]; Z4Q]By:/L
} %2dzx[s
} u3qxG3
`,SL\\%u
} ,*W~M&n"m
RN 4?]8
改进后的归并排序: *_I`{9~'
|Io:D:
package org.rut.util.algorithm.support; U)f('zD
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import org.rut.util.algorithm.SortUtil; #b*4v&<
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/** [c=P)t7
V
* @author treeroot :qxWANUa
* @since 2006-2-2 s?;8h &]=
* @version 1.0 5FJLDT2Lg
*/ yfV]f
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public class ImprovedMergeSort implements SortUtil.Sort { roc DO8f
"9'3mmZm=?
private static final int THRESHOLD = 10; N{bg-%s10i
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/* 8<}=f4vUj5
* (non-Javadoc) AJ6l#j-
* Kw"e4 a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `Gv\"|Gn
*/ N9|J\;fzT
public void sort(int[] data) { .?s jr4
int[] temp=new int[data.length]; v\dQjQu8m
mergeSort(data,temp,0,data.length-1); Tk[]l7R~
} eb`3'&zV&)
&c!6e<o[p
private void mergeSort(int[] data, int[] temp, int l, int r) { W7A!QS
int i, j, k; DgcS@N
int mid = (l + r) / 2; G7CkP
if (l == r) U&6A)SW,k
return; h[qZM
if ((mid - l) >= THRESHOLD) ?7wcv$K5
mergeSort(data, temp, l, mid); k^|z.$+
else ]@Y!,bw&
insertSort(data, l, mid - l + 1); ppn 8
if ((r - mid) > THRESHOLD) <QvVPE}z
mergeSort(data, temp, mid + 1, r); >3D1:0Sg
else 67&IaDts
insertSort(data, mid + 1, r - mid); I)1ih
Mj1f;$
for (i = l; i <= mid; i++) { :(ql=+vDb4
temp = data; D$4GNeB+#
} 'z,kxra|n
for (j = 1; j <= r - mid; j++) { \5&Mg81
temp[r - j + 1] = data[j + mid]; R98YGW_
dT
} ^@8XJ[C,_
int a = temp[l]; `},:dDHI
int b = temp[r]; :k?`gm$
for (i = l, j = r, k = l; k <= r; k++) { ;UgwV/d
if (a < b) { @k;65'"Q
data[k] = temp[i++]; VD&wO'U
a = temp; @yb'h`f]
} else { M2ex
3m
data[k] = temp[j--]; f_O|
b = temp[j]; 8D`+3
} Xj+_"0
#
} iCpm^ XT
} |MKR&%Na
kwUUvF7w
/** 9Br+]F_i
* @param data g7?[}?]3"p
* @param l 8K9HFT@yV
* @param i w^8Q~3|7
*/ |sr\SCx
private void insertSort(int[] data, int start, int len) { 9^g8VlQdT
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); r3?8nQ$
} +|bmUm<2
} `^{G`es
} 5'f_~>1Wt
} H0inU+Ih
=7TWzUCO#
堆排序: Trh
t2Iv
b+:mV7eX
package org.rut.util.algorithm.support; eCKm4l'BZ
Eh;Ia6}
import org.rut.util.algorithm.SortUtil; $:5h5Y#z
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/** wuY-f4
* @author treeroot :_i1gY)
* @since 2006-2-2 5P #._Em
* @version 1.0 T_2'=7
*/ 3(J>aQZuI
public class HeapSort implements SortUtil.Sort{ uY)4y0
7Fpa%N/WL
/* (non-Javadoc) EwG+' nlE
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?MSZO]Q4+
*/ HLz<C
public void sort(int[] data) { ha|2u(4
MaxHeap h=new MaxHeap(); X~m57bj
h.init(data); :CM-I_6
for(int i=0;i h.remove(); 9$v\D3<Z
System.arraycopy(h.queue,1,data,0,data.length); *-]k([wV
} i| cA)
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private static class MaxHeap{ vh"';L_*37
gYbvCs8O!
void init(int[] data){ _5n2'\] H`
this.queue=new int[data.length+1]; FEhBhv|m
for(int i=0;i queue[++size]=data; rMWvW(@@D
fixUp(size); o/,%rA4
} 74
ptd,
} 0P$19TN
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private int size=0; \I i#R
m8L %!6o
private int[] queue; \4$Nx/@Q}
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public int get() { E l.eK9L
return queue[1]; oIOeX1$V
} B> i^ w1
N%:uOX8{
public void remove() { Hh](n<Bs
SortUtil.swap(queue,1,size--); 3@eI? (N
fixDown(1); !^L}LtqHI
} sR PQr?
file://fixdown _d~GY,WTdO
private void fixDown(int k) { |:(B I5&S
int j; k(>J?\iNW
while ((j = k << 1) <= size) { PNLlJlYlP
if (j < size %26amp;%26amp; queue[j] j++; :.H@tBi*E
if (queue[k]>queue[j]) file://不用交换 YVRE9
break; _`QME r?
SortUtil.swap(queue,j,k); jyg>'"W
k = j; gHUW1E
} .w\4Th#
} a&[[@1OY
private void fixUp(int k) { yT3K 2A
while (k > 1) { ~O./A-l
int j = k >> 1; M[b~5L+S
if (queue[j]>queue[k]) (1{OQ0N+x
break; A+Je?3/.
SortUtil.swap(queue,j,k); ocW`sE?EED
k = j; cQh{z8Bf?<
} (ce)A,;
} zXGI{P0O
Q!~1Xc0S`p
}
KYcc jX
/s)It
} 25, [<Ao
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SortUtil: {Q K9pZB
k]& I(VQ"
package org.rut.util.algorithm; w\t
.*FlB>1jy
import org.rut.util.algorithm.support.BubbleSort; /%?bO-
import org.rut.util.algorithm.support.HeapSort; >)+U^V
import org.rut.util.algorithm.support.ImprovedMergeSort; uTbMp~cYB
import org.rut.util.algorithm.support.ImprovedQuickSort; cEJ_z(\=hr
import org.rut.util.algorithm.support.InsertSort; &n6
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import org.rut.util.algorithm.support.MergeSort; Z+J~moW `
import org.rut.util.algorithm.support.QuickSort; N9 )ERW2`*
import org.rut.util.algorithm.support.SelectionSort; /$vX1T
import org.rut.util.algorithm.support.ShellSort; \<%FZT_4~
@J@bD+Q+0
/** K1<l/
s
* @author treeroot N/^[c+J[E
* @since 2006-2-2 l%2B4d9"v
* @version 1.0 1d.>?^uE
*/ |@-y+vbA*
public class SortUtil { Dhg/>@tw
public final static int INSERT = 1; Eh_[8:dK
public final static int BUBBLE = 2; A]V<K[9:b
public final static int SELECTION = 3; dnPr2oI?I
public final static int SHELL = 4; E\}Q9,Z$
public final static int QUICK = 5; '?fn} V
public final static int IMPROVED_QUICK = 6; g]}]/\
public final static int MERGE = 7; v g tJ+GjN
public final static int IMPROVED_MERGE = 8; [iSLn3XXRX
public final static int HEAP = 9; x~yd/ R
+fIyeX
public static void sort(int[] data) { S
1Ji\
sort(data, IMPROVED_QUICK); 1 gRR
} .fW`/BXE
private static String[] name={ V|0UwS\n
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" VKrKA71Z~
}; Z3T26Uk
7xT<|3 I
private static Sort[] impl=new Sort[]{ p@znmn-
new InsertSort(), ^h|'\-d\
new BubbleSort(), n_] OYG>U
new SelectionSort(), |om3* ]7
new ShellSort(), QaEXk5>e
new QuickSort(), KQqQ@D&n
new ImprovedQuickSort(), tX}Fb0y
new MergeSort(), `+@%l*TQ
new ImprovedMergeSort(), [c6_6q As
new HeapSort() }KkH7XksF
}; F{<rIR
}@A~a`9g
public static String toString(int algorithm){ .~8IW,[
return name[algorithm-1]; t!Av[K
} Vk~}^;`Y
G}~b
public static void sort(int[] data, int algorithm) { d{GXFT;0
impl[algorithm-1].sort(data); WI'csM;M#
} 4 ]8PF
z#*GPA8Em:
public static interface Sort { CUw
9aH
public void sort(int[] data); 1r w>gR
} qOa-@MN
oq<#
public static void swap(int[] data, int i, int j) { Bp6Evi
int temp = data; WCWBvw4&"{
data = data[j]; _H3cqD
data[j] = temp; N4mQN90t
} aH$*Ue@Q
} DwTZ<H4