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。 G:1'}RC :
插入排序: /8h=6"
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package org.rut.util.algorithm.support; 2ndn8_l
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import org.rut.util.algorithm.SortUtil; i/ilG3m>
/** _6ZjF>f
* @author treeroot LmF ,en5
* @since 2006-2-2 \beO5]KS<
* @version 1.0 f
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*/ !.]JiT'o
public class InsertSort implements SortUtil.Sort{ 7z{wYCw
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/* (non-Javadoc) 8-#%l~dr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $RPW/Lyiq
*/ RP&bb{Y
public void sort(int[] data) { 'jtC#:ePK
int temp; yLX $SR
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ATNOb
} 1PkCWRpR
} @^W`Yg)C
} `C+<!)2
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} T
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冒泡排序: u*l|MIi6J
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package org.rut.util.algorithm.support; $7S"4rou
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import org.rut.util.algorithm.SortUtil; |7s2xRc
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/** V8?}I)#(7
* @author treeroot Tu#< {'1$
* @since 2006-2-2 g7*)|FOb
* @version 1.0 yw3"jdcl
*/ Eah6"j!B8n
public class BubbleSort implements SortUtil.Sort{ OU[<\d
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/* (non-Javadoc) NB"S,\M0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S\k <
*/ e3?=1ZB
public void sort(int[] data) { :]^e-p!z
int temp; ~&?bU]F
for(int i=0;i for(int j=data.length-1;j>i;j--){ x *Lt]]A
if(data[j] SortUtil.swap(data,j,j-1); +&Ld`d!n
} tgK
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} '$K E=Jy
} jVj5 ; }
} XIeLu"TSL
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选择排序: )O]T}eI
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package org.rut.util.algorithm.support; 6o3
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import org.rut.util.algorithm.SortUtil; kSQ8kU_w+
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/** n_8[bkbi
* @author treeroot E$e7(D
* @since 2006-2-2 ~4S$+*'8
* @version 1.0 rz?Cn
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*/ *Gbhk8}V'
public class SelectionSort implements SortUtil.Sort { |?` 5 ~f
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/* o`?rj!\
* (non-Javadoc) woYD &Oml
* ie}OZM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C$3*[
*/ T(4d5 fY
public void sort(int[] data) { ]T4/dk&|o^
int temp; kIrrbD
for (int i = 0; i < data.length; i++) { %\As
int lowIndex = i; s[1ao"sZ^
for (int j = data.length - 1; j > i; j--) { :$ 5A3i
if (data[j] < data[lowIndex]) { gg;r;3u
lowIndex = j; E h%61/
} 5jdZC(q5a
} ^[L(kHOGzk
SortUtil.swap(data,i,lowIndex); J~Xv R
} ] $ew 5%
} [uq>b|`RG
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} fCl}eXg6w
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Shell排序: DHidI\*gT
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package org.rut.util.algorithm.support; c}x1-d8
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import org.rut.util.algorithm.SortUtil; X|M!Nt0'
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/** +jN}d=N-
* @author treeroot !XA3G`}p6s
* @since 2006-2-2 7p&jSOY
* @version 1.0 XX;4A
*/ 30Yis_l2h
public class ShellSort implements SortUtil.Sort{ bdUPo+
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/* (non-Javadoc) )^h6'h`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cH]tZ$E`
*/ dn6B43w
public void sort(int[] data) { KWwtL"3
for(int i=data.length/2;i>2;i/=2){ W+XWS,(
for(int j=0;j insertSort(data,j,i); 7\u+%i;YZ
} zd?@xno
} j jpYg
insertSort(data,0,1); *OVB;]D3+
} 6 Z/`p~e
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/** N!A20Bv
* @param data aD/Rr3v>
* @param j @nxo Bc !P
* @param i 4 p_C+4
*/ &[.5@sv
private void insertSort(int[] data, int start, int inc) { (iIw}f)w
int temp; &{iC:zp
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 3KLUH=)P
} z*Sm5i&)_q
} _MBa&XEM
} `h}eP[jA
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} XGlt^<`
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快速排序: $o"nTl
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package org.rut.util.algorithm.support; QWmE:F[M~
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import org.rut.util.algorithm.SortUtil; ;rh.6D l
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/** VFT@Ic#]
* @author treeroot ?-??>& z
* @since 2006-2-2 iP/v"g"g
* @version 1.0 U%{GLO
*/ wI#8|,]"z
public class QuickSort implements SortUtil.Sort{ 7AG|'s['=
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/* (non-Javadoc) gfk)`>E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wAMg"ImJ
*/ (su,=Z
public void sort(int[] data) { " T(hcI
quickSort(data,0,data.length-1); >nSsbhAe
} ~ KK9aV{
private void quickSort(int[] data,int i,int j){ -luQbGcT3
int pivotIndex=(i+j)/2; ia6 jiW x
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SortUtil.swap(data,pivotIndex,j); PN}+LOD<t
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int k=partition(data,i-1,j,data[j]); vwR_2u
SortUtil.swap(data,k,j); 5<?Ah+1
if((k-i)>1) quickSort(data,i,k-1); 337.' |ZE
if((j-k)>1) quickSort(data,k+1,j); ROO*/OOd
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} 5Z=4%P*I
/** *%-<Ldv
* @param data .soCU8i3
* @param i }A9#3Y|F
* @param j A`c22Ls]
* @return ,"qCz[aDN1
*/ "EW8ll7r
private int partition(int[] data, int l, int r,int pivot) { M,Gy.ivz
do{ mrGV{ {.
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); [X(m[u '%
SortUtil.swap(data,l,r); 01bCP
} $Dg-;I
while(l SortUtil.swap(data,l,r); l![M,8
return l; ~NGM6+9
} rOIb9:
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} J,a&"eOZ
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改进后的快速排序: "tCI_
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package org.rut.util.algorithm.support; u09Tlqh0 3
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import org.rut.util.algorithm.SortUtil; MVatV[G
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/** HC0juT OiO
* @author treeroot Q+CJd>B
* @since 2006-2-2 UhB+c
* @version 1.0 T/$gnn
*/ QE]@xLz
public class ImprovedQuickSort implements SortUtil.Sort { b3NIFKw
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private static int MAX_STACK_SIZE=4096; .[={Yx0!I
private static int THRESHOLD=10; Po>6I0y
/* (non-Javadoc) [o^$WL?c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FlO?E3d
*/ O[X*F2LC4
public void sort(int[] data) { g 2Fg
int[] stack=new int[MAX_STACK_SIZE]; hzD)yf
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int top=-1; N$=YL
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int pivot; ,@Csa#
int pivotIndex,l,r; !G%!zNA S
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stack[++top]=0; 4^(x)r
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stack[++top]=data.length-1; e9acI>^w
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while(top>0){ s>9I#_4]
int j=stack[top--]; Vjs2Yenx
int i=stack[top--]; %<i sdvF
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pivotIndex=(i+j)/2; 5nPvEN/
pivot=data[pivotIndex]; kH g|!
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SortUtil.swap(data,pivotIndex,j); <Qq
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file://partition He_O+[sc
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r=j; >^8O :.
do{ 81RuNs]
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); &Vj@){
SortUtil.swap(data,l,r); $.,PteYK
} 97c0bgI!+
while(l SortUtil.swap(data,l,r); zU5@~J
SortUtil.swap(data,l,j); l@Lk+-[D
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if((l-i)>THRESHOLD){ o HK
stack[++top]=i; HB9"T5Pd*
stack[++top]=l-1; AFt- V
} XT0-"-q
if((j-l)>THRESHOLD){ tbQY&TO1
stack[++top]=l+1; /.:1Da
stack[++top]=j; -6MPls+
} w+m7jn!$
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} H c/7x).
file://new InsertSort().sort(data); Uahh|>s
insertSort(data); (4Db%Iw
} $`xpn#lz
/** \Y,P
* @param data +5fB?0D;
*/ n3e,vP? R
private void insertSort(int[] data) { HOD?i_
int temp; )~M@2;@L
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); fwppqIM
} uVYn,DB`
} |@d(2f8
} yCz"~c
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} 7$7|~k
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归并排序: iBWzxPv:z
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package org.rut.util.algorithm.support; HubG>]
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import org.rut.util.algorithm.SortUtil; UXZ3~/L5 O
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/** C,,T7(: k
* @author treeroot '3XOU.
* @since 2006-2-2 H28-;>'`
* @version 1.0 d%@0xsU1
*/ !yg &zzP*
public class MergeSort implements SortUtil.Sort{ qY&(O`?m&
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/* (non-Javadoc) QVn2`hr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F_u?.6e]
*/ lBn<\Y!^
public void sort(int[] data) { H94_a e
int[] temp=new int[data.length]; Bl)D/
mergeSort(data,temp,0,data.length-1); `?:{aOI
} !'\(OFv9Im
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private void mergeSort(int[] data,int[] temp,int l,int r){ r<]^.]3zj
int mid=(l+r)/2; depCqz@
if(l==r) return ; c[1{>z{G
mergeSort(data,temp,l,mid); *{JD=ua
mergeSort(data,temp,mid+1,r); B'Nvl#
for(int i=l;i<=r;i++){ `zs@W
temp=data; 2+|r*2_glo
} X:FyNUa
int i1=l; ,:.8s>+i
int i2=mid+1; xR'd}>`
for(int cur=l;cur<=r;cur++){ r& RJ'z
if(i1==mid+1) {3Gj
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data[cur]=temp[i2++]; F0m[ls$
else if(i2>r) Z(E.F,k
data[cur]=temp[i1++]; u`L*
else if(temp[i1] data[cur]=temp[i1++]; VQ~eg wJL
else nP=/XiCj
data[cur]=temp[i2++]; 5W{|?l{
} acpc[^'
} J(~xU0gd'
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} qyIy xJ
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改进后的归并排序: gi
A(VUwI>
4[0.M
package org.rut.util.algorithm.support; 8W.-Y|[5?
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import org.rut.util.algorithm.SortUtil; I#yd/d5^
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/** WsM/-P1Y
* @author treeroot gn 9CZ
* @since 2006-2-2 P.|g4EdND
* @version 1.0 @XF/hhGE_y
*/ zHj_q%A
public class ImprovedMergeSort implements SortUtil.Sort { [yAR%]i-7
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private static final int THRESHOLD = 10; *
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/* "jl`FAu)q
* (non-Javadoc) E<_+Tc
* DB1Y`l
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5a l44[
*/ *Oe;JqQkK
public void sort(int[] data) { 4gm(gY>[
int[] temp=new int[data.length];
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mergeSort(data,temp,0,data.length-1); 20uR? /|@
} 01^W Py9l
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private void mergeSort(int[] data, int[] temp, int l, int r) { hta$k%2
int i, j, k; kA:cz$)
int mid = (l + r) / 2; 8<ri"m,
if (l == r) ">RDa<H]
return; k@R)_,2HH
if ((mid - l) >= THRESHOLD) seH#v
mergeSort(data, temp, l, mid); *SZ*S%oS3
else M*c`@\
insertSort(data, l, mid - l + 1); ]pA}h.R#-
if ((r - mid) > THRESHOLD) Vi>kK|\b
mergeSort(data, temp, mid + 1, r); T+/Gz'
else - r82'3]
insertSort(data, mid + 1, r - mid); e{9(9qE"
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for (i = l; i <= mid; i++) { FCmS3KIa,
temp = data; M:(k7a+[^
} tL4xHa6v]
for (j = 1; j <= r - mid; j++) { R=M${u<t
temp[r - j + 1] = data[j + mid]; ]urcA,a
} f;%4O'
int a = temp[l]; akQtre`5sd
int b = temp[r]; 7[V'3
for (i = l, j = r, k = l; k <= r; k++) { !-4pr[C
if (a < b) { G>{;@u
data[k] = temp[i++]; nmN6RGx
a = temp; o*QhoDjc
} else { +kl@`&ga
data[k] = temp[j--]; ,k@fXoW
b = temp[j]; ^IM;D)X&:
} Fk
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} PHD$E s
} i@_|18F]`
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/** :h3
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* @param data te'<xfG
* @param l +Mv0X%(N
* @param i w>rglm&
*/ 9!FV.yp%F
private void insertSort(int[] data, int start, int len) { f5/ba9nI
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); }`
}
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} $-
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} iygdX2
} D9c8#k9Y.
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堆排序: $K8ZxH1z@
3QS"n.d
package org.rut.util.algorithm.support; :d!.E$S
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import org.rut.util.algorithm.SortUtil; 6576RT
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/** .f&,~$e4
* @author treeroot Jp5~iC2d
* @since 2006-2-2 Vv=d*
* @version 1.0 l=EIbh
*/ Yq)
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public class HeapSort implements SortUtil.Sort{ 9[6*FAFJPP
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/* (non-Javadoc) l=
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UwdcU^xt9
*/ R^_/iy
public void sort(int[] data) { AytHnp\H
MaxHeap h=new MaxHeap();
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h.init(data); {?BxVDD07
for(int i=0;i h.remove(); le|e 4f*+
System.arraycopy(h.queue,1,data,0,data.length); i':<