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。 6;vfl*
插入排序: x cA5
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package org.rut.util.algorithm.support; ]Y@B= 5e/
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import org.rut.util.algorithm.SortUtil; Ht!]%
/** S1oP_A[|
* @author treeroot Qfd4")zhG
* @since 2006-2-2 [
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* @version 1.0 'Z=8no`<
*/ y0f"UH/
public class InsertSort implements SortUtil.Sort{ yJGM"$
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/* (non-Javadoc) 1#-=|:U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %`1p 8>n
*/ UjrML
public void sort(int[] data) { Y}Gf%Xi,
int temp; |H7f@b]Sk
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7lYiu fg
} G>yTv`-
} :Lze8oY(D}
} zxffjz,Fe:
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} xgV(0H}Mf
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冒泡排序: Nn]|#lLP
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package org.rut.util.algorithm.support; Wz]ny3K[.
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import org.rut.util.algorithm.SortUtil; `;vJ\$-<
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/** />q?H)6
* @author treeroot 1so9w89
* @since 2006-2-2 ;+-Dg3
* @version 1.0 6o4Bf| E]
*/ 5h6c W
public class BubbleSort implements SortUtil.Sort{ y-i6StJ
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/* (non-Javadoc) >wOqV!0<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e qzmEg
*/ @0{vA\
public void sort(int[] data) { =2rkaBFC
int temp; F T/STI
for(int i=0;i for(int j=data.length-1;j>i;j--){ 6)_svtg
if(data[j] SortUtil.swap(data,j,j-1); ltH?Ew<]
} 0M_~@E*&
} 3!:?OUhx
} EiP#xjn?c
} oP CtLz}z
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} 9p{7x[ C
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选择排序: dnW #"
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package org.rut.util.algorithm.support; K[~fpQGbV1
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import org.rut.util.algorithm.SortUtil; y6C3u5`
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/** eNEMyv5{w4
* @author treeroot 1U(P0$C
* @since 2006-2-2 WY)*3?
* @version 1.0 ]
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*/ 6<
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public class SelectionSort implements SortUtil.Sort { y/(60H,{{
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/* lujUEHzp
* (non-Javadoc) 7j22KQ|EX^
* |k ]{WCD]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gfY1:0
*/
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public void sort(int[] data) { PZjK6]N\
int temp; `1fNB1c
for (int i = 0; i < data.length; i++) { 9nrmz>es|-
int lowIndex = i; td"D&1eQ@
for (int j = data.length - 1; j > i; j--) { EO:
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if (data[j] < data[lowIndex]) { ,VdNP
lowIndex = j; e[
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} c> }fy
} (0W)Jd[
SortUtil.swap(data,i,lowIndex); 6*uWRjt
} e"@Ag:r@a
} <T|?`;K
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} V9dJNt'Ui
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Shell排序: V9%!B3Sb
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package org.rut.util.algorithm.support; -Y=o
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import org.rut.util.algorithm.SortUtil; #i1z&b#@
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/** "gCqb;^
* @author treeroot CL)*cu6zG
* @since 2006-2-2
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* @version 1.0 &4R-5i2a
*/ ]QJWqY
public class ShellSort implements SortUtil.Sort{ 3UX/
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/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \]y /EOT
*/ KW 78J~u+
public void sort(int[] data) { $[1J[eY*
for(int i=data.length/2;i>2;i/=2){ s-"oT=
for(int j=0;j insertSort(data,j,i); |q+dTy_n
} 8uD%
} #x|IEjoa
insertSort(data,0,1); 7~2c"WE
} E-?@9!2
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/** ucwUeRw,
* @param data kx.8VUoM
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* @param j ]qPrXuS/
* @param i )ld`2)
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*/ Bl1^\[#
private void insertSort(int[] data, int start, int inc) { 4u}jkd$]*
int temp; W0qn$H
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); >5c38D7k)
} ?Zv>4+Y'
} ["7]EW\!:
} X7Z=@d(
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} p/WE[8U
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快速排序: $z[r(a^a
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package org.rut.util.algorithm.support; tB/'3#o
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import org.rut.util.algorithm.SortUtil; :|TQi9L$rj
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/** FNy-&{P2
* @author treeroot S #6:!
* @since 2006-2-2 <]wQ;14;H
* @version 1.0 FesUE_L2$
*/ O;CC(
public class QuickSort implements SortUtil.Sort{ 1}XESAX;0
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/* (non-Javadoc) 1P6!E*z\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 25wvB@0&
*/ -?Kd[Ma
public void sort(int[] data) { ;/s##7qf
quickSort(data,0,data.length-1); &wea]./B
} Zg;%$ kSQ
private void quickSort(int[] data,int i,int j){ 3"HX':8x
int pivotIndex=(i+j)/2; \s^4f#
file://swap [Zj6v a
SortUtil.swap(data,pivotIndex,j); ^nGKuW7\
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int k=partition(data,i-1,j,data[j]); 5ji#rIAhxh
SortUtil.swap(data,k,j); }F=lG -x
if((k-i)>1) quickSort(data,i,k-1); .h=H?Hr(V]
if((j-k)>1) quickSort(data,k+1,j); W)p?cK`
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} sHn-#SGm
/** gl>%ADOB@
* @param data C]GW u~QF
* @param i [\,Jy8t)\
* @param j </-aG[Fi
* @return a"bael
*/ #.W^7}H
private int partition(int[] data, int l, int r,int pivot) { JthW"{E
do{ Q)L6+gW^
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); W~Ae&gcn#
SortUtil.swap(data,l,r); v FWg0 $,
} gBd@4{y6C.
while(l SortUtil.swap(data,l,r); dO!5` ]
return l; (_Ky'.
} 1!p7N$QR
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} >(BAIjF
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改进后的快速排序: 0*F<tg,+]
k@Mt8Ln
package org.rut.util.algorithm.support; \I+#M-V
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import org.rut.util.algorithm.SortUtil; \wM8I-f!
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/** -v &
* @author treeroot |@Sj:^cJD
* @since 2006-2-2 :=e"D;5
* @version 1.0 ZMGthI}~-
*/ sMNhD/bb
public class ImprovedQuickSort implements SortUtil.Sort { G-Dc(QhU&
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private static int MAX_STACK_SIZE=4096; l,@rB+u
private static int THRESHOLD=10; #Zj3SfU~`
/* (non-Javadoc) .ovG_O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4ZCD@C
*/
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public void sort(int[] data) { r31)Ed$
int[] stack=new int[MAX_STACK_SIZE]; ~tB#Q6`nB
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int top=-1; :`<ME/"YE
int pivot; ck\TTNA
int pivotIndex,l,r; `g^b Qx
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stack[++top]=0; 0.z\YTZ9
stack[++top]=data.length-1; MNu\=p\Eq
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while(top>0){ G'0JK+=o
int j=stack[top--]; ,ocAB;K
int i=stack[top--]; 1^AG/w
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pivotIndex=(i+j)/2; (Q[(] dfc
pivot=data[pivotIndex]; Cd'`rs}3
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SortUtil.swap(data,pivotIndex,j); &b9bb{y_$K
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file://partition ?AYb@&%
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r=j; :7[4wQDt4
do{ f <pJ_
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); u}eLf'^ZCe
SortUtil.swap(data,l,r); #j4jZBOTM
} G^2%F5@
while(l SortUtil.swap(data,l,r); ^
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SortUtil.swap(data,l,j); S:{`eDk\A_
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if((l-i)>THRESHOLD){ |<!xD
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stack[++top]=i; M+GtUE~"
stack[++top]=l-1; F42?h:y8I
} rtC:3fDy
if((j-l)>THRESHOLD){ O*udV E>
stack[++top]=l+1; 6~tj"34_
stack[++top]=j; BXa.XZ<n(
} v%E~sX&CG
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} ,&iZ*6=X?0
file://new InsertSort().sort(data); 0P^&{ek+)
insertSort(data); Qv;q*4_
} M%v 6NxN
/** sj8lvIY5
* @param data dLtmG:II
*/ b:(t22m#?
private void insertSort(int[] data) { %6cbHH
int temp;
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); bsdT>|gW
} G0b##-.'^
} ,iMdv+
} DyM<aT
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} K8 Hj)$E61
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归并排序: )(-aw,iK
1a_;(T
package org.rut.util.algorithm.support; S0H|:J
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import org.rut.util.algorithm.SortUtil; }.N~jx0R
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/** sOhKMz
* @author treeroot Y{g[LG`U
* @since 2006-2-2 J!d=aGY0-
* @version 1.0 9T%b#~?3P
*/ NKMVp/66D
public class MergeSort implements SortUtil.Sort{ d-'BT(@:
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/* (non-Javadoc) :uB(PeAv*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EpB3s{B"
*/ DA^!aJ6iF
public void sort(int[] data) { :Ny^-4-N
int[] temp=new int[data.length]; f6`W(OiE
mergeSort(data,temp,0,data.length-1); m;{(U Z
} #Q$e%VJ(c1
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private void mergeSort(int[] data,int[] temp,int l,int r){ vY);7
int mid=(l+r)/2; pMV ?vH
if(l==r) return ; *X8Pa;x
mergeSort(data,temp,l,mid); +c' n,O~3
mergeSort(data,temp,mid+1,r); !112u#V
for(int i=l;i<=r;i++){ I|.
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temp=data; Xh@;4n
} IubzHf
int i1=l; z
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int i2=mid+1; ? $.x%G+
for(int cur=l;cur<=r;cur++){ cf%aOHYI*
if(i1==mid+1) 8f>v[SQ"
data[cur]=temp[i2++]; <['ucp
else if(i2>r) d"OYq
data[cur]=temp[i1++]; 3hfv^H
else if(temp[i1] data[cur]=temp[i1++]; 5,9cD`WR^
else (&Mv!6]
data[cur]=temp[i2++]; K)GpQ|4:<
} ?^WX]SAl
} 5V8`-yO9
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} OlX#1W]
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改进后的归并排序: -q&7q
X/FR e[R
package org.rut.util.algorithm.support; V(;c#%I2
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import org.rut.util.algorithm.SortUtil; CPcB17!
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/** %J+k.UrM
* @author treeroot uvJmEBL:
* @since 2006-2-2 V\=%u<f
* @version 1.0 py$i{v%
*/ xtK}XEhG!
public class ImprovedMergeSort implements SortUtil.Sort { 6\USeZh
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private static final int THRESHOLD = 10; 11RqP:zg
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/* zICAV -&
* (non-Javadoc) DaqlL
* oF_
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;i!$rL
*/ <K
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public void sort(int[] data) { ?MOjtAG0_~
int[] temp=new int[data.length]; )i[K1$x2
mergeSort(data,temp,0,data.length-1); 0u
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} SK5__Ix
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private void mergeSort(int[] data, int[] temp, int l, int r) { vHN/~k#
int i, j, k; F]cc?r312
int mid = (l + r) / 2;
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if (l == r) #>2cfZ`6'J
return; LBIEG_/m
if ((mid - l) >= THRESHOLD) l $0w 9Z^
mergeSort(data, temp, l, mid); _ME?o
else lL&p?MUp
insertSort(data, l, mid - l + 1); <7o@7r'0
if ((r - mid) > THRESHOLD) WS"v"J%
mergeSort(data, temp, mid + 1, r); ,{d=<j_
else h<i.Z7F;tj
insertSort(data, mid + 1, r - mid); 2=$ F*B>9
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for (i = l; i <= mid; i++) { 2{S*$K[M
temp = data; .}Hs'co
} \zzPsnFIg
for (j = 1; j <= r - mid; j++) { c
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temp[r - j + 1] = data[j + mid]; q#`;G,rs
} S+l>@wa)|
int a = temp[l]; 6C!TXV'
int b = temp[r]; jF-0 fK;)*
for (i = l, j = r, k = l; k <= r; k++) { c3*9{Il^
if (a < b) { +/rh8?
data[k] = temp[i++]; 3iw.yR
a = temp; g_)i)V
} else { F6"Qs FG
data[k] = temp[j--]; =z'533C
b = temp[j]; m Gx{Vpt
} 4MRN{W6
} mxICQ>s
b
} 1-PFM-
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/** Lbu,VX
* @param data .jl^"{@6
* @param l !'-./LD")
* @param i H%;pPkIi
*/ Tj=@5lj0
private void insertSort(int[] data, int start, int len) { PMe 3Or@
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); @'"7[k!y;
} lr$,=P`
} )6
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} ?uXY 6J"
} Z|j\_VKhl
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