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。 To%*)a
插入排序: W<]Oo ]
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package org.rut.util.algorithm.support; Lj-&TO}OZ
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import org.rut.util.algorithm.SortUtil; @<yc .>
/** :wmf{c
* @author treeroot Y6?mY!
* @since 2006-2-2 SSbK[aR
* @version 1.0 T4Gw\Z%
*/ 4qXRDsbCf
public class InsertSort implements SortUtil.Sort{ '=G
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/* (non-Javadoc) lT!$\E$1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x&oBO{LNK,
*/ Fd,+(i D
public void sort(int[] data) { q.sQ Z]ty9
int temp; Bp{`%86SE
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7+hF;
} aC
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} 7oLf5V1~
} 8Pr7aT:,
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} fy>And*
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冒泡排序: r5da/*G/O
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package org.rut.util.algorithm.support; v[DbhIXU
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import org.rut.util.algorithm.SortUtil; C5PBfn<j
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/** !v4j`A;%
* @author treeroot bKJ7vXC05
* @since 2006-2-2 yO,`"Dc_0
* @version 1.0 {r2|fgi
*/ zpr@!76
public class BubbleSort implements SortUtil.Sort{ o"}&qA;
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/* (non-Javadoc) 5~%,u2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A1t~&?
*/ u#@{%kPW
public void sort(int[] data) { HGQ?(2] 8$
int temp; =<zSF\Zr_
for(int i=0;i for(int j=data.length-1;j>i;j--){ C"^hMsU8
if(data[j] SortUtil.swap(data,j,j-1); X8SRQO^
} r{2].31'
} V52C,]qQH
} ie~fQ!rf
} h k!,
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} Z*9]:dG:!
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选择排序: ]baaOD$Z
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package org.rut.util.algorithm.support; m_Ac/ctf
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import org.rut.util.algorithm.SortUtil; oYh<k
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/** C| L^Ds0
* @author treeroot 11y.z^
* @since 2006-2-2 5+/b$mHZX
* @version 1.0 kAB+28A
*/ *xo;pe)9
public class SelectionSort implements SortUtil.Sort { uGUv~bE
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/* 9+8!xwR:
* (non-Javadoc) vuo'"^ =p0
* I`'a'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UUMdZ+7
*/ %V(N U_o
public void sort(int[] data) { uJam
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int temp; mhi90J c
for (int i = 0; i < data.length; i++) { pjHRV[`AP
int lowIndex = i; D_n}p8blT
for (int j = data.length - 1; j > i; j--) { ZAX0n!db3
if (data[j] < data[lowIndex]) { $S=~YzO
lowIndex = j; Ph#F<e(9
} p;u 1{
} ?cs]#6^
SortUtil.swap(data,i,lowIndex); +fd@K
} rx6-~0!eI=
} A6NxM8ybn+
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} {s8U7rmML
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Shell排序: 4d e]?#=
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package org.rut.util.algorithm.support; U7B/t3,=U
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import org.rut.util.algorithm.SortUtil; { 8f+h
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/** K4k~r!&OU
* @author treeroot sP?$G8-^
* @since 2006-2-2 ^6aS]t
* @version 1.0 *K,hrpYR
*/
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public class ShellSort implements SortUtil.Sort{ ) Kc%8hBv
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/* (non-Javadoc) )W1(tEq59
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sCF40AoY&
*/ Zgg'9E
public void sort(int[] data) {
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for(int i=data.length/2;i>2;i/=2){ Ki/'Ic1
for(int j=0;j insertSort(data,j,i); ,]Ro',A&
} ,'C30 A*p
} k6O.H
insertSort(data,0,1); +:> J Z$
} `s`C{|wv
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/** )_77>f%
* @param data Pknc[h},
* @param j |As2"1_f
* @param i bR`rT4.F
*/ SLtSqG7~
private void insertSort(int[] data, int start, int inc) { izPh1YA
int temp;
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for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); -]Q(~'a
} 6P~aW
} gwSN>oj
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} _)KY
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} IV{FH&t^T"
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快速排序: k]?z~ p
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package org.rut.util.algorithm.support; |e*Gz D
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import org.rut.util.algorithm.SortUtil; Q !9HA[Ly
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/** e=t<H"&
* @author treeroot P_p6GT:5
* @since 2006-2-2 4!l
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* @version 1.0 ?fK^&6pI
*/ +7Yu^&
public class QuickSort implements SortUtil.Sort{ ~->Hlxze'K
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/* (non-Javadoc) tu\mFHvlg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %won=TG8
*/ ~ww?Emrw
public void sort(int[] data) { lDW!Fg
quickSort(data,0,data.length-1); [kbC'Eh*
} -IBO5;2_
private void quickSort(int[] data,int i,int j){ gbm0H-A:*
int pivotIndex=(i+j)/2; }B y)y;~
file://swap Y4mC_4EU
SortUtil.swap(data,pivotIndex,j); }A{_L6qx
F=XF]
int k=partition(data,i-1,j,data[j]); "7Eo>g
SortUtil.swap(data,k,j); R?
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if((k-i)>1) quickSort(data,i,k-1); 8HMo.*Ti9
if((j-k)>1) quickSort(data,k+1,j); 3p=vz'
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} ' _B_&is
/** K7IyCcdB
* @param data Kb}MF9?:e
* @param i C"w,('~@kW
* @param j GDF{Lf)/v
* @return NB EpM
*/ $ye^uu;Z
private int partition(int[] data, int l, int r,int pivot) { c~P)4(udT
do{ W_^>MLq
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); o2DtCU-A
SortUtil.swap(data,l,r); jFtg.SD
} v btAq^1
while(l SortUtil.swap(data,l,r); RCzV5g
return l; P:
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} D7)(D4S4
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} Bn\l'T
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改进后的快速排序: i 'qMi~{
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package org.rut.util.algorithm.support; 1h2H1gy5I3
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import org.rut.util.algorithm.SortUtil; *|mz_cKu
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/** wG+=}1X
* @author treeroot TMK'(6dH
* @since 2006-2-2 yI8 SQ$w0y
* @version 1.0 J' W}7r
*/ n!a<:]b<
public class ImprovedQuickSort implements SortUtil.Sort { PdT83vOCE
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private static int MAX_STACK_SIZE=4096; dY8(nQG
private static int THRESHOLD=10; _R)&k%i}
/* (non-Javadoc) C1d
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'Q5&5UrBr
*/ sGSsUO:@j;
public void sort(int[] data) { ,'~#Ch
int[] stack=new int[MAX_STACK_SIZE]; J{d(1gSZ
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int top=-1; 9qpU@V!
int pivot; 2}w#3K
int pivotIndex,l,r; (^LS']ybc
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stack[++top]=0; be7L="vZw
stack[++top]=data.length-1; tw=K&/@^O
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while(top>0){ S_2"7
int j=stack[top--]; {7qA &c=
int i=stack[top--]; >8|+%pK8<
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pivotIndex=(i+j)/2; 2JVxzj<~`
pivot=data[pivotIndex]; BEWro|]cM
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SortUtil.swap(data,pivotIndex,j); pYt/378w
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file://partition vf<UBa;Xm
l=i-1; M ?*Tf&
r=j; 34ha26\np
do{ lyyX<=E{)
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ^_68]l=
SortUtil.swap(data,l,r); bj}=8k0
} Vv8_\^g]
while(l SortUtil.swap(data,l,r); ,^ 7 CP
SortUtil.swap(data,l,j); zie=2
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if((l-i)>THRESHOLD){ MLV:U
stack[++top]=i; '.Z4 hHX
stack[++top]=l-1; `}gdN};
} 4=xq:Tf
if((j-l)>THRESHOLD){ %k2FPmA6
stack[++top]=l+1; dCe X}Z
stack[++top]=j; e0 u,zg+m
} U'y,YtF@
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} (bv,02
file://new InsertSort().sort(data); @uM EXP
insertSort(data); L,?/'!xV
} !,Nwts>m
/** R"3
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* @param data v0#*X5C1'
*/ {oUAP1V^
private void insertSort(int[] data) { DK6?E\<
int temp; b}@(m$W
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #f*g]p{
} >&WhQhZ3kg
} cwe1^SJ6y
} ZY cd.? :6
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} PK4`5uT
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归并排序: xx }GOY.J
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package org.rut.util.algorithm.support; fxgU~'
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import org.rut.util.algorithm.SortUtil; rCBfD
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/** 9JnY$e<&
* @author treeroot _dU8'H
* @since 2006-2-2 26L~X[F
* @version 1.0 MR$>!Nlp
*/ J#Z5^)$
public class MergeSort implements SortUtil.Sort{ u1Ek y/e-
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/* (non-Javadoc) \4{2eU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qaVy.
*/ gg^1b77hT
public void sort(int[] data) { !VP %v&jKm
int[] temp=new int[data.length]; 8uch i
mergeSort(data,temp,0,data.length-1); _<zfQZai
} a}gkT]
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private void mergeSort(int[] data,int[] temp,int l,int r){ he$XLTmr:
int mid=(l+r)/2; X}cZxlqc
if(l==r) return ; }$kQs!#
mergeSort(data,temp,l,mid); Puh$%;x
mergeSort(data,temp,mid+1,r); `uo,__y
for(int i=l;i<=r;i++){ ;AIc?Cg
temp=data; .A6lj).:
} tmJgm5v
int i1=l; hoQ7).>
int i2=mid+1; BFVAw
for(int cur=l;cur<=r;cur++){ r-IT(DzkD
if(i1==mid+1) s-*._;
data[cur]=temp[i2++]; "e6|"w@8
else if(i2>r) iiG f'@/
data[cur]=temp[i1++]; fD4ICO @
else if(temp[i1] data[cur]=temp[i1++]; syPWs57pH
else .lN s4e
data[cur]=temp[i2++]; jb[!E^'&>
} `/n M[
} DC Q^fZ/
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} Jblj^n?Bm
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改进后的归并排序: k?6z_vu
6!q#x[A
package org.rut.util.algorithm.support; [/ M`
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import org.rut.util.algorithm.SortUtil; "TS
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/** WYrI |^[>
* @author treeroot ]zfG~^.
* @since 2006-2-2 o)Z=m:t,lK
* @version 1.0 5x8+xw3Eh
*/ #1.YKo
public class ImprovedMergeSort implements SortUtil.Sort { {ZsdLF#
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private static final int THRESHOLD = 10; %Ym^{N
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/* c#/H:?q?a
* (non-Javadoc) V5`^Y=X(%
* &M/>tEZ)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M@Q3M(z
*/ ZD>a>]
public void sort(int[] data) { qe$^q
int[] temp=new int[data.length]; ciQZHH2
mergeSort(data,temp,0,data.length-1); ^|MjJsn
} Q{g;J`Z)p
h"+ `13
private void mergeSort(int[] data, int[] temp, int l, int r) { MV>$BW
int i, j, k; ]3iH[,KU3
int mid = (l + r) / 2; Jc6R{C
if (l == r) ?.=}pAub
return; |JF@6
if ((mid - l) >= THRESHOLD) .L6Zm U
mergeSort(data, temp, l, mid); Z{6kWA3Kk
else %
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insertSort(data, l, mid - l + 1); WjSc/3Qy
if ((r - mid) > THRESHOLD) "Z=5gj
mergeSort(data, temp, mid + 1, r); 6NWn(pZ]p
else _~u2: yl(
insertSort(data, mid + 1, r - mid); ZraT3
)!BsF'uVQ
for (i = l; i <= mid; i++) { SQ*k =4*r
temp = data; 4LH[4Yj?`
} e4>"92hX
for (j = 1; j <= r - mid; j++) { *J|(jdu7
temp[r - j + 1] = data[j + mid]; <[:o !$
} ?:{sH#ua
int a = temp[l]; RDqFL.-S
int b = temp[r]; tCG76LH
for (i = l, j = r, k = l; k <= r; k++) { t"072a
if (a < b) { \daZk /@
data[k] = temp[i++]; 1BHG'y
a = temp; y
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} else { VZ&
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data[k] = temp[j--]; '(GiF
b = temp[j]; .xhK'}l[
} $Fkaa<9;P
} .iMN,+qP
} #>=j79~
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/** C)'q
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* @param data `
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* @param l r}#\BbCv;7
* @param i z!;1i[|x
*/ BVsD(
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private void insertSort(int[] data, int start, int len) { fA/m1bYxg
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); (Rt7%{*
} o2z]dTJ}o
} [u}(57DS
} 2%RNq<{Z_
} zmj"fN{\
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堆排序: *Xo]-cKL0
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package org.rut.util.algorithm.support; tGA :[SP
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import org.rut.util.algorithm.SortUtil; hpTDxh'?$C
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/** Twn4lG4~
* @author treeroot .itw04Uru
* @since 2006-2-2 toN^0F?Qm
* @version 1.0 H~ZV*[A`
*/ sGh(#A0Pt
public class HeapSort implements SortUtil.Sort{ Y!iZW
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/* (non-Javadoc) }_=eT]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JSh.]j<bJL
*/ WJ<^E"^
public void sort(int[] data) { !EUan
MaxHeap h=new MaxHeap(); Bqma\1cgb
h.init(data); W>-Et7&2
for(int i=0;i h.remove(); A_Frk'{qhB
System.arraycopy(h.queue,1,data,0,data.length); .EM`.
} bR@p<;G|
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private static class MaxHeap{ qC
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[Nn`l,
void init(int[] data){ }neY<{z
this.queue=new int[data.length+1]; @(r/dZc
for(int i=0;i queue[++size]=data; hI9
fixUp(size); >pUtwIP
} =UyLk-P
w
} jw-0M1B
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private int size=0; 87hq{tTs]
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private int[] queue; vfVj=DYj
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public int get() { y;/VB,4V
return queue[1]; #o1=:PQaC
} :
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public void remove() { Ua!aaq&
SortUtil.swap(queue,1,size--); 6@DF
fixDown(1); fb^fVSh>
} ]_N|L|]M
file://fixdown 95el'K[R
private void fixDown(int k) { )"Ztlhs`#
int j; d!eYqM7-G
while ((j = k << 1) <= size) { "DYJ21Ut4
if (j < size %26amp;%26amp; queue[j] j++; U&O:
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if (queue[k]>queue[j]) file://不用交换 N-lkYL-%\j
break; sr8cYLm5R
SortUtil.swap(queue,j,k); ]U"94S U:)
k = j; bhniB@<
} 13taFVdU
} {<<U^<6}
private void fixUp(int k) { 1GzAG;UUo6
while (k > 1) { ,v"YqD+GC5
int j = k >> 1; 6Ybg^0m
if (queue[j]>queue[k]) T=ev[ mS
break; W6Y]N/v3>
SortUtil.swap(queue,j,k); JtER_(.
k = j; |\pbir
} #U14-^7
} 3Z1CWzq(
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} .V,@k7U,V
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} p,#o<W
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SortUtil: 4:FK;~wM&x
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package org.rut.util.algorithm; \ Yx/(e
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import org.rut.util.algorithm.support.BubbleSort; `nu''B
H
import org.rut.util.algorithm.support.HeapSort; FJMrs[
import org.rut.util.algorithm.support.ImprovedMergeSort; \-g)T}g,I
import org.rut.util.algorithm.support.ImprovedQuickSort; 9 AJ(&qY(
import org.rut.util.algorithm.support.InsertSort; <7~'; K
import org.rut.util.algorithm.support.MergeSort; A}l3cP;
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import org.rut.util.algorithm.support.QuickSort; WPQ fhr#|
import org.rut.util.algorithm.support.SelectionSort; a|X a3E
import org.rut.util.algorithm.support.ShellSort; ui?
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/**
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* @author treeroot B6={&7U2
* @since 2006-2-2 'dn]rV0(C
* @version 1.0 ez|)ph7
*/ W)bLSL]`E
public class SortUtil { 7j-4TY~
public final static int INSERT = 1; {tWf
public final static int BUBBLE = 2; qi^7
public final static int SELECTION = 3; ~A\GT$
public final static int SHELL = 4; > ;*b|Ik
public final static int QUICK = 5; |!4K!_y
public final static int IMPROVED_QUICK = 6; o4Om}]Ti
public final static int MERGE = 7; .6Pw|xu`Pw
public final static int IMPROVED_MERGE = 8; d$1@4r
public final static int HEAP = 9; ,5h)x"s
I`!<9OTBj
public static void sort(int[] data) { DW[N|-L
sort(data, IMPROVED_QUICK); F'21jy&
} BI%$c~wS
private static String[] name={ <