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。 auIW>0?}
插入排序: %@(+`CCA
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package org.rut.util.algorithm.support; t{UWb~"
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import org.rut.util.algorithm.SortUtil; RF8,qz
/** ?lqqu#;8
* @author treeroot uFmpc7
* @since 2006-2-2 bi-Am/9
* @version 1.0 ~YNzSkz
*/ Tq*<J~-
public class InsertSort implements SortUtil.Sort{ JoB-&r}\V*
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/* (non-Javadoc) 9'Z{uHi%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E\Wd*,/v)
*/ _`C|K>:
public void sort(int[] data) { us5Zi# }
int temp; K
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); rp
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} sMAH;'`!Eu
} &Odrq#o?R
} xP9R
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冒泡排序: dC4`xUv
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package org.rut.util.algorithm.support; B4*,]lS?
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import org.rut.util.algorithm.SortUtil; )y!gApNs"
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/** s(5(zcBK
* @author treeroot #mioT",bm=
* @since 2006-2-2 b+RU <qR
* @version 1.0 eJ[+3Wh
*/ Eb5>c/(
public class BubbleSort implements SortUtil.Sort{ ?st}rJ_
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/* (non-Javadoc) uFuH/(}K[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VAheus
*/ _;BNWH
public void sort(int[] data) { %26HB
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int temp; / E!6]b/
for(int i=0;i for(int j=data.length-1;j>i;j--){ Z@m5hx&
if(data[j] SortUtil.swap(data,j,j-1); aFnyhu&W'
} ?=?*W7
} cWQ &zc
} ;eFV}DWW
} taVK&ohWx
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} jA@
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选择排序: &H,UWtU+
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package org.rut.util.algorithm.support; )abH//Pps.
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import org.rut.util.algorithm.SortUtil; '&|%^9O/"
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/** p&xj7qwp@F
* @author treeroot SRHD"r^@
* @since 2006-2-2 f/kYm\Zc
* @version 1.0 #~rQ\A!4
*/ 7k#>$sY+
public class SelectionSort implements SortUtil.Sort { ;$*tn"- ?~
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/* v-F|#4Q=ut
* (non-Javadoc) -)"\?+T
* SoCN.J30
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IAmMO[9H
*/ RT%{M1tkS
public void sort(int[] data) { isnpSN"z
int temp; C{-Dv-<A>
for (int i = 0; i < data.length; i++) { X)TZ S
int lowIndex = i; 8BY`~TZO$q
for (int j = data.length - 1; j > i; j--) { /K,@{__JP
if (data[j] < data[lowIndex]) { |e+r~).4B
lowIndex = j; su60j^e*
} EcR[b@YI
} ;8]Hw a1!
SortUtil.swap(data,i,lowIndex); vl`St$$|
} ] RVme^=
} *=%`f=
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} bL:+(/:
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Shell排序: 2fm6G).m
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package org.rut.util.algorithm.support; >
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import org.rut.util.algorithm.SortUtil; : T4ap_Ycq
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/** 1
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* @author treeroot I=E\=UTG,5
* @since 2006-2-2 nwDW<J{f|U
* @version 1.0 ^sJp!hi4=)
*/ U|+`Eth8(
public class ShellSort implements SortUtil.Sort{ odvUU#l
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/* (non-Javadoc) Ac>GF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +b dnTV6
*/ TU| 0I
public void sort(int[] data) { Pj^Ccd'>=
for(int i=data.length/2;i>2;i/=2){ >LU !Z
for(int j=0;j insertSort(data,j,i); Nc(A5*
} +jGUp\h%9;
} ]#rmk!VT?
insertSort(data,0,1); ZI!;~q
} O4W2X@
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/** |L)qH"Eo
* @param data kgX"I ?>d
* @param j ?`SBGN;
* @param i y0t-e
*/ x}7Xd P.2$
private void insertSort(int[] data, int start, int inc) { taSYR$VJ
int temp; aTLr%D:Ka
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); %A@U7gqc
} %)r1?H} #%
} y$|OE%S
} J
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} _ =(v? 2:?
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快速排序: i+Xb3+R
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package org.rut.util.algorithm.support; 1Dm$:),^T}
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import org.rut.util.algorithm.SortUtil;
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/** )]JQlm:H
* @author treeroot e5sQl1
* @since 2006-2-2 )|U+<r<
* @version 1.0 XCO;t_%
*/ hTAZGV(
public class QuickSort implements SortUtil.Sort{ A6F/w
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/* (non-Javadoc) p:4oA<V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eG5xJA^
*/ KlRIJOS
public void sort(int[] data) { eKqo6P:#f
quickSort(data,0,data.length-1); f:A1j\A?
} YR~)07
private void quickSort(int[] data,int i,int j){ _ Av_jw`m
int pivotIndex=(i+j)/2; <(o) * Zmo
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SortUtil.swap(data,pivotIndex,j); ){i
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int k=partition(data,i-1,j,data[j]); &m@DK>
SortUtil.swap(data,k,j); v}"DW?
if((k-i)>1) quickSort(data,i,k-1); :AC( \
if((j-k)>1) quickSort(data,k+1,j); j{NcDepLn
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} {X&H
/** ,-Yl%R.W=
* @param data I6 Q{ Axy
* @param i :W1B"T<
* @param j nA#dXckoc
* @return :\G`}_db'
*/ )>^!X$`3
private int partition(int[] data, int l, int r,int pivot) { "[\TL#/
do{ y)+lU
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); -IG@v0_w
SortUtil.swap(data,l,r); i}LVBx"K(
} $%3%&+z$I
while(l SortUtil.swap(data,l,r); \w@ "`!%
return l; (,
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改进后的快速排序: /:aY)0F0<&
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package org.rut.util.algorithm.support; ft4(^|~
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import org.rut.util.algorithm.SortUtil; )Es|EPCx!
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/** eq$.np
* @author treeroot |Skhx9};
* @since 2006-2-2 kG3m1: :
* @version 1.0 B["C~aF
*/ 2G BE=T
public class ImprovedQuickSort implements SortUtil.Sort { X?OH//co
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private static int MAX_STACK_SIZE=4096; &^^V*O
private static int THRESHOLD=10; 5g;i{T/6~x
/* (non-Javadoc) |]x>|Z?/u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CR'1,
*/ j
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public void sort(int[] data) { &X
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int[] stack=new int[MAX_STACK_SIZE]; {3*Zx"e![
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int top=-1; X< p KAO\
int pivot; Y`!Zk$8
int pivotIndex,l,r; Xg1QF^
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stack[++top]=0; ps3jw*QZ{5
stack[++top]=data.length-1; 8iUj9r_
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while(top>0){ 5}"9)LT@@w
int j=stack[top--]; z[0B"f
int i=stack[top--]; }w/6"MJ[n
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pivotIndex=(i+j)/2; QlK]2r9
pivot=data[pivotIndex]; 5?1:RE(1
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SortUtil.swap(data,pivotIndex,j); =^`?O* /;
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file://partition ) i=.x+Q
l=i-1; ,FDRU
r=j;
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do{ )TzQ8YpO}
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 6ly`lu9
SortUtil.swap(data,l,r); n]fMl:77
} wj<fi
while(l SortUtil.swap(data,l,r); w>h\643
SortUtil.swap(data,l,j); Ni-@El99
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if((l-i)>THRESHOLD){ 4|Ay;}X \
stack[++top]=i; #8qhl
stack[++top]=l-1; U/9_:
} ?I332,,q
if((j-l)>THRESHOLD){ T43Jgk,
stack[++top]=l+1; GEUC<bL+
stack[++top]=j; S<UWv@`U"
} 0;2"X[e
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} 2*ByVK
file://new InsertSort().sort(data); ;HoBLxb P
insertSort(data); .l$:0a
} 5v,_ Hgh
/** R-J^%4U`7
* @param data w0`8el;
*/ #l#8-m8g)
private void insertSort(int[] data) { ?]PE!7H
int temp; ?n(OH~@$i
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); + Un(VTD
} yU'<b.]
} <S68UN(Ke
} 0Tq=nYZA
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} &ws^Dm]R
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归并排序: dh
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package org.rut.util.algorithm.support; m< Y I}
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import org.rut.util.algorithm.SortUtil; FE,BvNBZ
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/** ]-"G:r
* @author treeroot f O ,5
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* @since 2006-2-2 2rPmu
* @version 1.0 P+bA>lJd
*/ !!?TkVyEyM
public class MergeSort implements SortUtil.Sort{ Xli$4 uL
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/* (non-Javadoc) W!t =9i
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ble[@VW|
*/ WJj5dqatV
public void sort(int[] data) { R,dbq4xkl
int[] temp=new int[data.length]; 9wbj}tN\z
mergeSort(data,temp,0,data.length-1); fs\A(]`$
} M`)/^S9
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private void mergeSort(int[] data,int[] temp,int l,int r){ 1Y'NG<d_
int mid=(l+r)/2; h5<eU;Rw+
if(l==r) return ; G4]( !f!Kv
mergeSort(data,temp,l,mid); "Tz'j}< 9C
mergeSort(data,temp,mid+1,r); `IV7\}I|
for(int i=l;i<=r;i++){ YpI|=mv
temp=data; n#^ii/H
} z"P/Geb:O
int i1=l; 'S%H"W\
int i2=mid+1; %z~=Jz^
for(int cur=l;cur<=r;cur++){ L Q0e@5
if(i1==mid+1) "fu:hHq
data[cur]=temp[i2++]; .F},Z[a&
else if(i2>r) qWM+!f
data[cur]=temp[i1++]; % 'OY
else if(temp[i1] data[cur]=temp[i1++]; Jb*E6-9G
else !|\l*
data[cur]=temp[i2++]; F:N8{puq5
} `vZX"+BAh
} Y'C1L4d
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} lhC hk7l
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改进后的归并排序: -}_1f[b
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package org.rut.util.algorithm.support; pO92cGJ8
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import org.rut.util.algorithm.SortUtil; k(he<-GF\
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/** F1meftK
* @author treeroot 9y&bKB2,
* @since 2006-2-2 J6Vx7
* @version 1.0 _"*}8{|
*/ 6H=gura&
public class ImprovedMergeSort implements SortUtil.Sort { ;5DDV6
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private static final int THRESHOLD = 10; Wdi`ZE
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/* #%EHcgF
* (non-Javadoc) 'o~gT ;T#
* (x
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B"8jEYT5
*/ T'{9!By,P
public void sort(int[] data) { 1yVhO2`7]
int[] temp=new int[data.length]; w2db=9
mergeSort(data,temp,0,data.length-1); v7n@CWnN
} F1A40h7R$Y
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private void mergeSort(int[] data, int[] temp, int l, int r) { Q(36RX%@
int i, j, k; V';l H2
int mid = (l + r) / 2; o7t{?|
if (l == r) 5owK2
return; Lw2VdFi>E&
if ((mid - l) >= THRESHOLD) rr,w/[
mergeSort(data, temp, l, mid); &r\8VEZq"
else \W]gy_=D{
insertSort(data, l, mid - l + 1); .cbC2t95
if ((r - mid) > THRESHOLD) YS_3Cq
mergeSort(data, temp, mid + 1, r); 2vWn(6`
else Q8MIpa!:
insertSort(data, mid + 1, r - mid); 7Ja*T@ ! h
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for (i = l; i <= mid; i++) { j+@3.^vK
temp = data; AJm$(3?/D
} ]f0OmUHR5i
for (j = 1; j <= r - mid; j++) { 1
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temp[r - j + 1] = data[j + mid]; T7%!JBg@
} L$BV`JWPw
int a = temp[l]; "Kdn`zN{
int b = temp[r]; 9z..LD(
for (i = l, j = r, k = l; k <= r; k++) { ES?*w@x
if (a < b) { ?w+ V:D
data[k] = temp[i++]; _ OC@J*4.
a = temp; BlQX$s]
} else { ^Kg n:l
data[k] = temp[j--]; fjOq@thD
b = temp[j]; Qz3Z_V4k9
} aL%E#
} |R1T;J<[
} i[@13kr
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/** +FAj30
* @param data [q_+s
* @param l UKQ"sC
* @param i 4(8trD6
*/ Px&_6}YWy
private void insertSort(int[] data, int start, int len) { f:-l}Zj
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); VX&PkGi?o
} SI=u-'%
} NB4O,w
} kw@^4n+M
}
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堆排序: HA*L*:0
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package org.rut.util.algorithm.support; 6tndC
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import org.rut.util.algorithm.SortUtil; H#DvCw
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/** tKeTHj;jO
* @author treeroot q;")
* @since 2006-2-2 uINdeq 7|F
* @version 1.0 0'fswa)
*/ XS">`9o!
public class HeapSort implements SortUtil.Sort{ kJp~'\b
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/* (non-Javadoc) zD79 M
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cf3!Ud
*/ qS2Nk.e]o
public void sort(int[] data) { Z sTtSM\Ac
MaxHeap h=new MaxHeap();
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h.init(data); z8'1R6nq
for(int i=0;i h.remove(); M{Z
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System.arraycopy(h.queue,1,data,0,data.length); `}$o<CJ
} %KXiB6<4
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private static class MaxHeap{ pX
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void init(int[] data){ !6T"J!F#
this.queue=new int[data.length+1]; ~?AEtl#&"
for(int i=0;i queue[++size]=data; C=/B\G/.9
fixUp(size); {^
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} ^Aq0<
}
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private int size=0; uI)twry]@
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private int[] queue; /}(d'@8p
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public int get() { ~vF a\7sf
return queue[1]; ^k;]"NR
} LmePJ
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public void remove() { g4$(%]
SortUtil.swap(queue,1,size--); eZLEdTScM
fixDown(1); hlaN'j
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} /.Ak'Vmi
file://fixdown %, kP_[!>Q
private void fixDown(int k) { ^ RA'E@"
int j; rNii,_
while ((j = k << 1) <= size) { FM >ae-L-
if (j < size %26amp;%26amp; queue[j] j++; [d6!
if (queue[k]>queue[j]) file://不用交换 b}3"v(
break; e "A"
SortUtil.swap(queue,j,k); yZ|"qP1
k = j; .h7s.p?
} g[3LPKQ
} s|]g@czan
private void fixUp(int k) { DAB9-[y+
while (k > 1) { [|DKBJ
int j = k >> 1; 8AuBs;i
if (queue[j]>queue[k]) #]kjyT0
break; ttzNv>L,
SortUtil.swap(queue,j,k); 6<._^hyq
k = j; "6$V1B0KW
} MC}t8L=
} @1JwjtNk
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} - {QU>`2
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} u dZOg
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SortUtil: &12KpEyf
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package org.rut.util.algorithm;
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import org.rut.util.algorithm.support.BubbleSort; :8A+2ra&
import org.rut.util.algorithm.support.HeapSort; Ey&H?OFiP
import org.rut.util.algorithm.support.ImprovedMergeSort; d;Vy59}eY
import org.rut.util.algorithm.support.ImprovedQuickSort; ~&i4