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。 ]gb=
插入排序: ;&;W
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package org.rut.util.algorithm.support; q }C+tn"\
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import org.rut.util.algorithm.SortUtil; Z'v-F^
/** T5lQIr@a
* @author treeroot xycH~ ?
* @since 2006-2-2 v6a]1B
* @version 1.0 Jc*XXu)
*/ kMxazx1
public class InsertSort implements SortUtil.Sort{ tJI,r_
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/* (non-Javadoc) BNGe
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WgR4Ix^L#
*/ *<V^2z$y_
public void sort(int[] data) { 3yS
int temp; ni CE\B~
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4g
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} Lm)\Z P+W
} 5 MxL*DB=b
} M~T.n)x2
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} /i|z.nNO
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冒泡排序: Tp%(I"H'_;
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package org.rut.util.algorithm.support; sYbH|}
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import org.rut.util.algorithm.SortUtil; }k$4/7ri
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/** S9sR#
* @author treeroot OJ>.-"
* @since 2006-2-2 Bn wzcl
* @version 1.0 ik1tidw
*/ n(Y%Vmy
public class BubbleSort implements SortUtil.Sort{ B33$ u3d
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/* (non-Javadoc) !%L,*'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wNCCH55Pt
*/ /ci]}`'ws
public void sort(int[] data) { 7()?C}Ni-
int temp; gz#4{iT~
for(int i=0;i for(int j=data.length-1;j>i;j--){ L-i>R:N4
if(data[j] SortUtil.swap(data,j,j-1); ]5CNk+`'
} >%b\yl%0
} SqPtWEq@P
} B~WtZ-%%E
} Dma.r
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} A/*%J74v
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选择排序: ~fN%WZ;_
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package org.rut.util.algorithm.support; PK6iY7Qp)
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import org.rut.util.algorithm.SortUtil; ~XM[>M\qB
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/** B;zt#H4
* @author treeroot - Xupq/[,
* @since 2006-2-2 Rhgj&4
* @version 1.0 Ibr%d2yS=
*/ 8Cf|*C+_'
public class SelectionSort implements SortUtil.Sort { 6Y*;{\Rd
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/* Va<HU:<
* (non-Javadoc) jRZ%}KX
* )6oGF>o>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5a`%)K
*/ {5Lj8N5
public void sort(int[] data) { 6.Ie\5-a;
int temp; @M;(K<%h
for (int i = 0; i < data.length; i++) { [uuj?Rbd
int lowIndex = i; $< %B#axL
for (int j = data.length - 1; j > i; j--) { |WqOk~)[Z3
if (data[j] < data[lowIndex]) { 7v~j=Z>
lowIndex = j; 'VnwG
} c=p=-j=.J
} iDb;_?
SortUtil.swap(data,i,lowIndex); xp \S2@<
} u</8w&!
} I+?hG6NM
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} B&KL2&Z~Pq
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Shell排序: f4t.f*#
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package org.rut.util.algorithm.support; +Ghi}v
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import org.rut.util.algorithm.SortUtil; w<wV]F*
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/** _2Zp1h,
* @author treeroot |H)cuZ
* @since 2006-2-2 7qIB7 _K5
* @version 1.0 '&yg{n
*/ Q\_{d0
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public class ShellSort implements SortUtil.Sort{ [[L-jq.'
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/* (non-Javadoc) fv'4f$U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 85Y|CN] vQ
*/ X)Gp7k1w
public void sort(int[] data) { Ww9;UP'G
for(int i=data.length/2;i>2;i/=2){ j
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for(int j=0;j insertSort(data,j,i); .(Y6$[#@
} _^!vCa7f
} Opg#*w%-
insertSort(data,0,1); [=M%
} |7F*MP
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/** L4'[XcY
* @param data [Eq<":)
* @param j d"<F!?8
* @param i |"7Pv
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*/ >.%4~\U
private void insertSort(int[] data, int start, int inc) { Epjff@7A
int temp; @PkJY
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); vs9?+3
} Lk,+Tfk"
} RIy\u>
} r|Zi3+
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} CY"i-e"q<Q
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快速排序: pO/%N94s
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package org.rut.util.algorithm.support; nfE@R."A
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import org.rut.util.algorithm.SortUtil; 2<W&\D o@
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/** .XH8YT42
* @author treeroot dk5|@?pe
* @since 2006-2-2 Bq}x9C&<
* @version 1.0 pdz'!I
*/ %efGt6&
public class QuickSort implements SortUtil.Sort{ " ~Q*XN2
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/* (non-Javadoc) knHv?#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lgD]{\O$ip
*/ 8I#D`yVKc
public void sort(int[] data) { W'$kZ/%[
quickSort(data,0,data.length-1); \9m*(_Qf
} 9%,;XQ
private void quickSort(int[] data,int i,int j){ &9 B_/m3
int pivotIndex=(i+j)/2; @)0 Y~A )
file://swap %v=!'?VT
SortUtil.swap(data,pivotIndex,j); #+jUhxq
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int k=partition(data,i-1,j,data[j]); -Zy)5NB-tZ
SortUtil.swap(data,k,j); kK[duW=6
if((k-i)>1) quickSort(data,i,k-1); S!dHNA:iU
if((j-k)>1) quickSort(data,k+1,j); c ~Kc7}I
d<T%`:s<
} B@cz
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/** __\P`S_
* @param data h7W}OF_=y
* @param i *o4%ul\3Y|
* @param j A~71i&
* @return {BOLPE-
*/ \r-N(;m
private int partition(int[] data, int l, int r,int pivot) { U ":"geU
do{ :YvbU Y
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); I,P!@
SortUtil.swap(data,l,r); &YX6"S_B
} zixEMi[8
while(l SortUtil.swap(data,l,r); %$n02"@
return l; dr]&kqm
} iJnh$jo
h|W%4|]R)
} /~hbOs/
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改进后的快速排序: %C*^:\y
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package org.rut.util.algorithm.support; }98-5'u.X
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import org.rut.util.algorithm.SortUtil; $KQ,}I
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/** xqWj|jA
* @author treeroot i^/54
* @since 2006-2-2 sR79
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* @version 1.0 6VR[)T%
*/ fM":f|
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public class ImprovedQuickSort implements SortUtil.Sort { P|}\/}{`
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private static int MAX_STACK_SIZE=4096; uPU#c\
private static int THRESHOLD=10; d]7*mzw^j
/* (non-Javadoc) K-@bwB7~s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M,..Kw/ }~
*/ l2/@<0P
public void sort(int[] data) { jgRCs.6
int[] stack=new int[MAX_STACK_SIZE]; VO -784I
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int top=-1; ,y.3Fe
int pivot; F6&P ~H
int pivotIndex,l,r; p7 [(z
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stack[++top]=0; /djACA
stack[++top]=data.length-1; 7^wE$7hS
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while(top>0){ !%62Phai
int j=stack[top--]; AU`OESSI
int i=stack[top--]; 7A0dl}:
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pivotIndex=(i+j)/2; U.Hdbmix
pivot=data[pivotIndex]; ^pw7o6}
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SortUtil.swap(data,pivotIndex,j); J|?[.h7tO
j],&z^O$
file://partition LUul7y'"
l=i-1;
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r=j; y:9?P~
do{ 1ypjyu
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); jkCHi@
SortUtil.swap(data,l,r); *1,=qRjL
} BHclUwj
while(l SortUtil.swap(data,l,r); RAOKZ~`
SortUtil.swap(data,l,j); lk o3]A3
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if((l-i)>THRESHOLD){ o16~l]Z|f
stack[++top]=i; Hdna{@~
stack[++top]=l-1; Nh:4ys!P
} U,HS;wo;t
if((j-l)>THRESHOLD){ ]ut?&&*
stack[++top]=l+1; s((b"{fFb
stack[++top]=j; 1>;6x^_h0S
} !7Uu]m69n
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} J[o${^
file://new InsertSort().sort(data); `axQd%:AC
insertSort(data);
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} ir+8:./6
/** NYwGK|
* @param data w(#:PsMo<
*/ W
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private void insertSort(int[] data) { 0#]!#1utg
int temp; 0STk)>3$-
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); SZE `J:w
} oVreP
} e
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} oFn4%S:
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} b<\G I7
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归并排序: QU%N*bFW%P
Ks51:M
package org.rut.util.algorithm.support; #'KY`&Tw&
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import org.rut.util.algorithm.SortUtil; 1sMV`qv>
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/** ]%||KC!O
* @author treeroot !8Y3V/)NU
* @since 2006-2-2 (E IR z>
* @version 1.0 i
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*/ k3/4Bt G/
public class MergeSort implements SortUtil.Sort{ 3U>S]#5}
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/* (non-Javadoc) H!#5!m&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A` =]RJ
*/ %'kX"}N/
public void sort(int[] data) { JkJhfFV
int[] temp=new int[data.length]; > `0| X
mergeSort(data,temp,0,data.length-1); yq!CWXZ2
} [e1\A&T
#yX^?+Rc
private void mergeSort(int[] data,int[] temp,int l,int r){ jigbeHRy
int mid=(l+r)/2; y]MWd#U
if(l==r) return ; O2$!'!hz
mergeSort(data,temp,l,mid); _3I3AG0e
mergeSort(data,temp,mid+1,r); cS5w +`,L
for(int i=l;i<=r;i++){ ^`/V i
temp=data; "wF*O"WQo
} Ag<4r
int i1=l; c.\:peDk
int i2=mid+1; Vj29L?3
for(int cur=l;cur<=r;cur++){ [KD}U-(Wg
if(i1==mid+1) g8Ok ^
data[cur]=temp[i2++]; rrbZ+*U
else if(i2>r) Re7{[*Q4
data[cur]=temp[i1++]; +6uOg,;
else if(temp[i1] data[cur]=temp[i1++]; Fu#Y7)r
else +OKA_b"wB
data[cur]=temp[i2++]; q~mcjbLz
} ^sJ1 ^LT
} :S#eg1y.w]
gp%tMTI1
} RLv&,$$0
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改进后的归并排序: 7%W!k zp>
zkH<aLRB
package org.rut.util.algorithm.support; EWSr@}2j
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import org.rut.util.algorithm.SortUtil; l
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/** zj%cd;
* @author treeroot D5}DV
* @since 2006-2-2 pn+D@x#IA
* @version 1.0 'Dnq+
*/ n})
public class ImprovedMergeSort implements SortUtil.Sort { $&bU2 ]
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private static final int THRESHOLD = 10; LPsh?Ca?N
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/* R%Kl&c
* (non-Javadoc) t!NrB X
* FLw[Mg:L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AsV8k_qZL
*/ [ e$]pN%
public void sort(int[] data) { XA=|]5C
int[] temp=new int[data.length]; _.u~)Q`6
mergeSort(data,temp,0,data.length-1); \?aOExG
I
} %
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JiG8jB7%}
private void mergeSort(int[] data, int[] temp, int l, int r) { ^XtHF|%0T
int i, j, k; fN~8L}!l
int mid = (l + r) / 2; ^!N;F"
if (l == r) Vx0MG{vG1
return; 7MR:X#2v>
if ((mid - l) >= THRESHOLD) :h3#1fko
mergeSort(data, temp, l, mid); !$g(&
else avF&F
insertSort(data, l, mid - l + 1); f:)]FHPB1
if ((r - mid) > THRESHOLD) QSO5 z2|
mergeSort(data, temp, mid + 1, r); hj%}GP{{
else aMe%#cLI
insertSort(data, mid + 1, r - mid); =iA"; x
r9U[-CX:"
for (i = l; i <= mid; i++) { wCqE4i
temp = data; +3(CGNE
} 6,sRavs
for (j = 1; j <= r - mid; j++) { Y;~EcM
temp[r - j + 1] = data[j + mid]; rCV$N&rK
} <e@I1iL37y
int a = temp[l]; !H2C9l:rd
int b = temp[r]; MZgmv
for (i = l, j = r, k = l; k <= r; k++) { &Z#Vw.7U
if (a < b) { 8Xt=eL/P
data[k] = temp[i++]; "i;*\+x
a = temp; &e5^v
} else { oXu~9'm$
data[k] = temp[j--]; p?EEox
b = temp[j]; y}.y,\S0
} P#M<CG9
} mE)x7
} M$DwQ}Z
$6qR/#74
/** >EPaZp6
* @param data pZNlcB[Qn-
* @param l P7M0Ce~iW
* @param i ^v()iF
!
*/ \J#I}-a&j
private void insertSort(int[] data, int start, int len) { ^/4{\3
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ?,A8 fR
} /jn:e"0~
} J-HabHv
} G5C#i7cpm
} \H}@-*z+)
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堆排序: #RsIxpc
PDa06(t7
package org.rut.util.algorithm.support; ^^W`Lh%9
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import org.rut.util.algorithm.SortUtil; "' LOaf$X
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/** `0/gs
* @author treeroot c;A
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* @since 2006-2-2 0:nt#n~_
* @version 1.0 u!156X?[eU
*/ &AkzSgP
public class HeapSort implements SortUtil.Sort{ Wl}G[>P
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/* (non-Javadoc) lS Kv*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QQ2OZy>W
*/ #EwRb<'Em
public void sort(int[] data) { @idp8J [td
MaxHeap h=new MaxHeap(); O>{t}6o
h.init(data); U7f#Z
for(int i=0;i h.remove(); 60SenHKles
System.arraycopy(h.queue,1,data,0,data.length); 7i%P&oB
} m''i E
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private static class MaxHeap{ v:!7n
FL*w(Br.
void init(int[] data){ n,R[O_9u[
this.queue=new int[data.length+1]; 9=sMKc%!-
for(int i=0;i queue[++size]=data; lqwJ F &
fixUp(size); 3vEjf
} _16&K}<
} m78MWz]Yo
Rg!aKdDl$
private int size=0; }tg:DG
Ix l"'Q_z
private int[] queue; aF_ZV bS
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public int get() { xHR+((
return queue[1]; $T@xnZ
} &