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。 Ao"C<.gUYP
插入排序: c1#+Vse
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package org.rut.util.algorithm.support; U&W"Ea=R/
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import org.rut.util.algorithm.SortUtil; D/:3RZF
/** T1zi0fa'
* @author treeroot K<RqBecB
* @since 2006-2-2 f^e&hyC
* @version 1.0 kOI
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*/ |,sMST%
public class InsertSort implements SortUtil.Sort{ |}Ph"g2D,
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/* (non-Javadoc) !*vBW/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l"\uf(0K
*/ WcEt%mGQ,
public void sort(int[] data) { d.r Y-k
int temp; _ECB^s_
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ir&.Z5=
} i/$SN-5}1
} e=>%^F
} C}Qt "-%
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} bEI!Ja
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冒泡排序: 1;&T^Gdj
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package org.rut.util.algorithm.support; $$4W}Ug3U
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import org.rut.util.algorithm.SortUtil; ,8##OB(
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/** i0ybJOa4
* @author treeroot $E.XOpl&I
* @since 2006-2-2 i@,]Z~]
* @version 1.0 HJ@5B"
*/ ])N%^Qe$U
public class BubbleSort implements SortUtil.Sort{ !G+u j(
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/* (non-Javadoc) Pfan7fq+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .'lN4x
*/ #{,h@g}W
public void sort(int[] data) { H[nz]s
int temp; [@2s&Ct;
for(int i=0;i for(int j=data.length-1;j>i;j--){ .$wLLE^*
if(data[j] SortUtil.swap(data,j,j-1); }4h0bI
} ?D=8{!R3
} :Tb7r6
} ;rHz;]si
}
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} ML=z<u+
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选择排序: E}$V2ha0zu
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package org.rut.util.algorithm.support; gZ` DT
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import org.rut.util.algorithm.SortUtil; a))*F!}c
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/** nh;y:Bi
* @author treeroot voh^|(:(TH
* @since 2006-2-2 e1^l.>2d6
* @version 1.0 \EI#az=I
*/ EfKntrom[
public class SelectionSort implements SortUtil.Sort { bNs[O22
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}
/* U>A6eWhH
* (non-Javadoc) !*bdG(pK
* 3EOyq^I%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )7AM3%z1?
*/ a_%>CD${t
public void sort(int[] data) { sam[s4@eQ
int temp; v,0<9!'v
for (int i = 0; i < data.length; i++) { #Fzb8Yo
int lowIndex = i; ccMd/
for (int j = data.length - 1; j > i; j--) { hBy*09Sv
if (data[j] < data[lowIndex]) { vJThU$s-
lowIndex = j; PWG;&ma
} y5%5O xB
} eJaUmK:
SortUtil.swap(data,i,lowIndex); "XB4yExy
} r?$&Z^
} zq=&4afOE
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} 2@*<9-9
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Shell排序: cNeiD@t3V&
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package org.rut.util.algorithm.support; }5hZo%w[n
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import org.rut.util.algorithm.SortUtil; ;-Ado8
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/** RNe9h lr
* @author treeroot X TM$a9)
* @since 2006-2-2 -#OwJ*-U
* @version 1.0 h[y*CzG
*/ xD^wTtT
public class ShellSort implements SortUtil.Sort{ v^\JWPR/
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/* (non-Javadoc) O!,Ca1N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1yJ75/
*/ T+(M8qb
public void sort(int[] data) { R.O
for(int i=data.length/2;i>2;i/=2){ h,~tXj
for(int j=0;j insertSort(data,j,i); HoL~j( {
} IqXBz.p
} yIWc\wv
insertSort(data,0,1); gY%OhYtF2
} eX@v7i,}
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/** 73VQ@Jn
* @param data yYM_lobn
* @param j r:73uRk
* @param i ]~'9
*/ blUY.{NN3
private void insertSort(int[] data, int start, int inc) { {N"*olx
int temp; ;}UzJe ,S
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ]I8]mUiUH
} .(JE-upJ"
} PP],HB+*[
} H<$pHyxU
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} &{BBxv)y
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快速排序: k{_1r;
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package org.rut.util.algorithm.support; y2GQN:X
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import org.rut.util.algorithm.SortUtil; R9Ldl97'
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/** 8~;{xYN )
* @author treeroot 1>hb-OMX
* @since 2006-2-2 Wux 0RF&
* @version 1.0 F|6
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*/ q)NXyy4BT
public class QuickSort implements SortUtil.Sort{ PL9<*.U"=
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/* (non-Javadoc) Rq"VB.ef&{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ih(:HFRMq6
*/ [+y&HNf
public void sort(int[] data) { tsck|;v
quickSort(data,0,data.length-1); O5ucI$s
} w8G7Jy
private void quickSort(int[] data,int i,int j){
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int pivotIndex=(i+j)/2; TFNUv<>X
file://swap 2@rp<&s
SortUtil.swap(data,pivotIndex,j); Rk}\)r\
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int k=partition(data,i-1,j,data[j]); T:be 9 5!,
SortUtil.swap(data,k,j); ] gH
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if((k-i)>1) quickSort(data,i,k-1); SRP5P,- y
if((j-k)>1) quickSort(data,k+1,j); \)FeuLGL9
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} 2j2mW>Z
/** q
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* @param data 65'`uuPx
* @param i bjuYA/w<
* @param j &/ \O2Aw8
* @return mYntU^4f
*/ Q1aHIc
private int partition(int[] data, int l, int r,int pivot) { _2NN1/F5
do{ xt?3_?1
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); &B?@@6
SortUtil.swap(data,l,r); F~tm`n8Z
} d1UVvyH
while(l SortUtil.swap(data,l,r); x*NqA(r
return l; >`<Ued
} ,h3269$J
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} );0<Odw%.
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改进后的快速排序: AQE
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package org.rut.util.algorithm.support; D=jSh
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import org.rut.util.algorithm.SortUtil; qFV;n6&V
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/** Ah6wU|_-g
* @author treeroot pem3G5
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* @since 2006-2-2 &{X{36
* @version 1.0 *LY~l
*/ #JK;&Dg!
public class ImprovedQuickSort implements SortUtil.Sort { v[0DE*p
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private static int MAX_STACK_SIZE=4096; 3!i.Fmo
private static int THRESHOLD=10; ygmv_YLjm
/* (non-Javadoc) -9=M9}eDF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]jHh7> D
*/ vGx?m@
public void sort(int[] data) { t/l! KdY$
int[] stack=new int[MAX_STACK_SIZE]; KzEuPJ?
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int top=-1; !!?+M @
int pivot;
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int pivotIndex,l,r; jF%)Bhn(
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stack[++top]=0; dzjB UD
stack[++top]=data.length-1; $nUd\B$.=
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while(top>0){ (z8]FT
int j=stack[top--]; DFt=%aV[
int i=stack[top--]; c!'A)JD@
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pivotIndex=(i+j)/2; QU-7Ch#8
pivot=data[pivotIndex]; 21[K[ %
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SortUtil.swap(data,pivotIndex,j); O,F]\
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file://partition yj}bY?4I
l=i-1; ]jVIpGM
r=j; VxUvvJ{-v
do{ kPx]u\
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); }};j2
SortUtil.swap(data,l,r); "e1{V8
4
} ]p4`7@@)*
while(l SortUtil.swap(data,l,r); B-y0;0
SortUtil.swap(data,l,j); c]AKeq]
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if((l-i)>THRESHOLD){ nZ2mEt
stack[++top]=i; >:Rt>po8|w
stack[++top]=l-1; hYP6z^
} zh#OD{
if((j-l)>THRESHOLD){ vh1
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stack[++top]=l+1; 1=9qAp;?o
stack[++top]=j; 5t"bCzp
} Dg9--wI}I9
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} tMD^$E"C
file://new InsertSort().sort(data); n}AR/3}
insertSort(data); K^z5x#Yj
} hQg,#r(JE4
/** <'>d0:>N
* @param data [3{:H"t
*/ g[=\KrTSg
private void insertSort(int[] data) { mC{!8WC@k
int temp; 3oppV_^JdT
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); h8iaJqqvJ
} ?{@!!te@3v
} ~# h E&nq
} r
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} V',m $
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归并排序: 3&a*]
O)$N}V0
package org.rut.util.algorithm.support; |k7ts&2
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import org.rut.util.algorithm.SortUtil; @mQ/WYs
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/** ,{`o/F/
* @author treeroot dFI.`pB
* @since 2006-2-2 ${TB2q}%
* @version 1.0 >n$EeJ
*/ }OX>(
public class MergeSort implements SortUtil.Sort{ 7b7%(
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/* (non-Javadoc) QRg"/62WCD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k<j)?_=`
*/ HAI1%F236
public void sort(int[] data) { 2t]! {L
int[] temp=new int[data.length]; ;8%@Lan
mergeSort(data,temp,0,data.length-1); K;ry4/Vap
} $E4O^0%/p
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private void mergeSort(int[] data,int[] temp,int l,int r){ P5
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int mid=(l+r)/2;
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if(l==r) return ; qN`]*baS
mergeSort(data,temp,l,mid); VvMU)
mergeSort(data,temp,mid+1,r); @WDqP/4
for(int i=l;i<=r;i++){ ZAnO$pA
temp=data; h>L6{d1
} ~qLhZR\g^
int i1=l; (W}i287
int i2=mid+1; +}G>M=t::
for(int cur=l;cur<=r;cur++){ qI V`zZc
if(i1==mid+1) I8-&.RE
data[cur]=temp[i2++]; _>?8eC ]4a
else if(i2>r) RfKxwo|M<
data[cur]=temp[i1++]; a,0o{*(u$
else if(temp[i1] data[cur]=temp[i1++]; ee d\0
else \'^Z_6{w
data[cur]=temp[i2++]; `aWwF}
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} 6 peM4X
} 1Sc~Vb|>
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} ;u-< {2P
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改进后的归并排序: n`I
jG
5@&i:vs5y
package org.rut.util.algorithm.support; W!Ct[t
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import org.rut.util.algorithm.SortUtil; 23n8,} H,
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/** +KwF
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* @author treeroot kq.R(z+
* @since 2006-2-2 j
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* @version 1.0 |Nd.'|g,
*/ PA-0FlV|
public class ImprovedMergeSort implements SortUtil.Sort { C2,cyhr
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private static final int THRESHOLD = 10; Y"\T*lKa
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/* d<cbp[3F
* (non-Javadoc) vheAh`u^&
* AU?YZEAei
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #pn AK
*/ 7Caap/L:
public void sort(int[] data) { 7;s0m0<%~
int[] temp=new int[data.length]; .N><yQ-j3'
mergeSort(data,temp,0,data.length-1); E,?aBRxy
} EV,NJ3V
tlxjs]{0E
private void mergeSort(int[] data, int[] temp, int l, int r) { P;91C'T-x
int i, j, k; ps;o[gB@5
int mid = (l + r) / 2; 8}`8lOE7
if (l == r) o?hw2-mH
return; 1#_j6Q2
if ((mid - l) >= THRESHOLD) AA%g^PWpR
mergeSort(data, temp, l, mid); j<-o{6r
else }~,cCtg:o
insertSort(data, l, mid - l + 1); \^W?
if ((r - mid) > THRESHOLD) oW1olmpp=
mergeSort(data, temp, mid + 1, r); ~map5@Kd
else [ Zqg"`
insertSort(data, mid + 1, r - mid); #K*q(ei,7h
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for (i = l; i <= mid; i++) { 7
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temp = data; 3A/MFQ#2
} {j4:.fD
for (j = 1; j <= r - mid; j++) { ieoUZCO^r\
temp[r - j + 1] = data[j + mid]; {"AYOc>2|
} g#nsA(_L
int a = temp[l]; Bq=](<>>
int b = temp[r]; ]1$AAmQH
for (i = l, j = r, k = l; k <= r; k++) { UdgI<a~`k6
if (a < b) { EGO@`<"h
data[k] = temp[i++]; uXa}<=O
a = temp; bGnJ4R3J
} else { \V\ET
data[k] = temp[j--]; 4tu>~ vOE
b = temp[j]; RwHXn]1
} yAkN2
} =umS^fJ5`
} *njB
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/** e%7P$.
* @param data WoR**J?}w
* @param l {%}6d~Bg
* @param i :#KURYO<
*/ O@&I.d$
private void insertSort(int[] data, int start, int len) { *#9kFz-
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); [NDYJ'VGe
} u3!!_~6,z
} \zDV|n~{w
} @TG~fJSA12
} 780MSFV8
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堆排序: S8<aq P
f}d@G/L
package org.rut.util.algorithm.support; (G'ddZAJV
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import org.rut.util.algorithm.SortUtil; *Y?]="8c#;
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/** JYUKs~Qt
* @author treeroot SX8%F:<.
* @since 2006-2-2 t')I c6.?i
* @version 1.0 Ctx K{:
*/ y[eNM6p
public class HeapSort implements SortUtil.Sort{ qA[}\8}h
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/* (non-Javadoc) {$.{VE+v5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l)bUHh5[
*/ Xb;`WE gC
public void sort(int[] data) { o4795r,jz
MaxHeap h=new MaxHeap(); r73Xh"SL
h.init(data); yV`vu/3K
for(int i=0;i h.remove(); Fv
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System.arraycopy(h.queue,1,data,0,data.length); W`kgYGnFG
} Ha\ hQ'99
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private static class MaxHeap{ o)DKP>IM#
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void init(int[] data){ =="SW"vNi
this.queue=new int[data.length+1]; IS~oyFS
for(int i=0;i queue[++size]=data; -ybupUJcbv
fixUp(size); n9ih^H
} 6<R
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} iBt5aUt
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private int size=0; !Ai;S
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private int[] queue; &aU+6'+QXB
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public int get() { .l!Z=n|
return queue[1]; ~<3yTl>
} rCYn YA
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public void remove() { UgJHSl
SortUtil.swap(queue,1,size--); BDg /pDnwg
fixDown(1); /:)4tIV
} +iR;D$w
file://fixdown *BV .zbGm
private void fixDown(int k) { ?T"crX
int j; :A[/;|&
while ((j = k << 1) <= size) { Gy5W;,$q
if (j < size %26amp;%26amp; queue[j] j++; '_%Jw:4k
if (queue[k]>queue[j]) file://不用交换 fr7/%{s
break; H+Wd#7l,
SortUtil.swap(queue,j,k); ))vwofkw4
k = j; [S%
} f\JyN@w+
} jdzV&
private void fixUp(int k) { \`^jl
while (k > 1) { d>}%A
]
int j = k >> 1; utXcfKdt
if (queue[j]>queue[k]) okW3V}/x/z
break; gVc[`(@h
SortUtil.swap(queue,j,k); "#()4.9
k = j; }`X$
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} )8_0 d)
} F&\o1g-L
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} BdTj0{S1u
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} :5(TOF
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SortUtil: mMR[(
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