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。 H.
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插入排序: 3SG?W_
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package org.rut.util.algorithm.support; 3-Bl
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import org.rut.util.algorithm.SortUtil; K\!#4>yd
/** Z)<
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* @author treeroot Q%ad q-B
* @since 2006-2-2 5OLQw(E
* @version 1.0 ReB7vpd
*/ "l~Ci7& !a
public class InsertSort implements SortUtil.Sort{ |cbd6e{!
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/* (non-Javadoc) U\<-mXv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =C7
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*/ pgc3jP!
public void sort(int[] data) { &K%aw
int temp; SOh-,c\C
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5fjd{Y[k
} !|{IVm/J
} z5cYyx
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} &k>aP0k"
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} w_-+o^
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冒泡排序: m9$:9yRm
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package org.rut.util.algorithm.support; #B}?Zg
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import org.rut.util.algorithm.SortUtil; BR_TykP
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/** +a)E|(cN
* @author treeroot )$M,Ul
* @since 2006-2-2 "cUg>a3
* @version 1.0 i2,U,>.
*/
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public class BubbleSort implements SortUtil.Sort{ T|4snU2M
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/* (non-Javadoc) qt?*MyfV
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?Hz2-Cn
*/ 3}Xc71|v
public void sort(int[] data) { Mhpdaos
int temp; /Bv#) -5
for(int i=0;i for(int j=data.length-1;j>i;j--){ t%0?N<9YkU
if(data[j] SortUtil.swap(data,j,j-1); I*)VZW
} >9K//co"of
} X)Gp7k1w
} v|t{1[C
} ?m%h`<wgMc
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} *>
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选择排序: J1F{v)T'?
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package org.rut.util.algorithm.support; m2bDHQ+
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import org.rut.util.algorithm.SortUtil; y;`eDS'0.N
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/** VV3}]GjC
* @author treeroot QTJu7^O9
* @since 2006-2-2 7nE"F!d+0
* @version 1.0 `u'dh{,gE
*/ D_D,t8_Y
public class SelectionSort implements SortUtil.Sort { e<+<lj"
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/* e-6w8*!i
* (non-Javadoc) @'jfKW
* "~+.Af
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )C]x?R([m
*/ hl/itSl$
public void sort(int[] data) { a|qsQ'1,;
int temp; MK$Jj"
for (int i = 0; i < data.length; i++) { .KA V) So"
int lowIndex = i; |ng%PQq)
for (int j = data.length - 1; j > i; j--) { POd/+e9d
if (data[j] < data[lowIndex]) { bg7n
lowIndex = j; 05e>\}{0
} Wr%7~y*K
} F+aQ $pQ
SortUtil.swap(data,i,lowIndex); :F(9"L
} `lCuU~~ag
} H'Qo\L4H
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} Z6s5M{mE
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Shell排序: ?l6jG
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package org.rut.util.algorithm.support; NB)t7/Us
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import org.rut.util.algorithm.SortUtil; DdjCn`jqlf
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/** %v=!'?VT
* @author treeroot #+jUhxq
* @since 2006-2-2 zJl_ t0
* @version 1.0 -Zy)5NB-tZ
*/ o:\XRPB
public class ShellSort implements SortUtil.Sort{ S!dHNA:iU
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/* (non-Javadoc) d<T%`:s<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B@cz
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*/ 2i:zz?
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public void sort(int[] data) { h7W}OF_=y
for(int i=data.length/2;i>2;i/=2){ 3E|;r
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for(int j=0;j insertSort(data,j,i); A~71i&
} ZgYZwc&-
} rz
insertSort(data,0,1); &?<AwtNN
} _Z#eS/,O@
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/** fPQ|e"?
* @param data &L3#:jSk
* @param j $Z6D:"K
* @param i .h8M
*/ \qq-smcM-
private void insertSort(int[] data, int start, int inc) { k|j:T[_
int temp; L|67f4
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); +VOb
} %C*^:\y
} gGbI3^r#
} PrnrXl
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快速排序: #93}E
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package org.rut.util.algorithm.support; K`(#K#n
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import org.rut.util.algorithm.SortUtil; u4"r>e6_B
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/** E+{5-[Zc*$
* @author treeroot *zQOJsg"e
* @since 2006-2-2 bXvbddu)}
* @version 1.0 ,}7_[b)&V
*/ .TN2s\:]jw
public class QuickSort implements SortUtil.Sort{ l2/@<0P
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/* (non-Javadoc) o;;,iHu*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qZsnd7o{l.
*/ VkXn8J
public void sort(int[] data) { F6&P ~H
quickSort(data,0,data.length-1); p7 [(z
} (j N]OE^
private void quickSort(int[] data,int i,int j){ e^frVEV
int pivotIndex=(i+j)/2; [=~!w_
file://swap cjY@Ot*i$
SortUtil.swap(data,pivotIndex,j); 4A o{M
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int k=partition(data,i-1,j,data[j]); 9[{sEg=C$e
SortUtil.swap(data,k,j); 3^ ~Zj95M
if((k-i)>1) quickSort(data,i,k-1); B9W/bJ6%
if((j-k)>1) quickSort(data,k+1,j); "::9aYd!
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} |[WL2<
/** Q
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* @param data ?!m ma\W
* @param i 5"2@NL
* @param j =1Sy@M bH3
* @return ,;3:pr
*/ 1ypjyu
private int partition(int[] data, int l, int r,int pivot) { s01$fFJgO
do{ p">WK<N
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ZbyG*5iq
SortUtil.swap(data,l,r); yk#rd~2Z0
} ~2 Oc
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while(l SortUtil.swap(data,l,r); f?m5pax|
return l; %*p^$5L<
} Hn^sW
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} s((b"{fFb
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改进后的快速排序: !7Uu]m69n
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package org.rut.util.algorithm.support; B[7A
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import org.rut.util.algorithm.SortUtil; ir+8:./6
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/** w(#:PsMo<
* @author treeroot GZ,j?@
* @since 2006-2-2 QpJIDM/
* @version 1.0 ec1Fg0Fa
*/ v?{vg?vI
public class ImprovedQuickSort implements SortUtil.Sort { 2;}xN! 8
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private static int MAX_STACK_SIZE=4096; fv/v|
private static int THRESHOLD=10; T7s+9CE
/* (non-Javadoc) ZR2\dH*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l3\9S#3-^
*/ PbQE{&D#
public void sort(int[] data) { K"I{\/x@
int[] stack=new int[MAX_STACK_SIZE]; GJ>ypEWo
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int top=-1; vhX-Qk t}
int pivot; 1"d\mE
int pivotIndex,l,r; +> ^[W~[2
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stack[++top]=0; *.,8,e8Vq
stack[++top]=data.length-1; Es:5yX!
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while(top>0){ fGG
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int j=stack[top--]; @21u I{
int i=stack[top--]; x@Sra@
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pivotIndex=(i+j)/2; Bd QQ9$@5
pivot=data[pivotIndex]; \Qp}|n1JY
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SortUtil.swap(data,pivotIndex,j); i(z+a6^@|
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file://partition O/nqNQ?<
l=i-1; |<'10
r=j; C~:b* X
do{ '&/(oJ;O~
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 4fD`M(wv
SortUtil.swap(data,l,r); XCV0.u|
} ud.poh~|
while(l SortUtil.swap(data,l,r); ItMl4P`|
SortUtil.swap(data,l,j); M$#+W?m&
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if((l-i)>THRESHOLD){ Qk|( EFQ9
stack[++top]=i; d{?)q
stack[++top]=l-1; e5FCqNip'
} +6uOg,;
if((j-l)>THRESHOLD){ }@3$)L%n_u
stack[++top]=l+1; :^K~t!@
stack[++top]=j; 1RmBtx\<
} dPRtN@3
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} +7`u9j.
file://new InsertSort().sort(data); l;XUh9RF`A
insertSort(data); TjT](?'o
}
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/** DCz\TwzU
* @param data N4'
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*/ rffVfw
private void insertSort(int[] data) { z/pDOP Ku
int temp; Xx=K?Z?3.
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); F=:F>6`
} W&Y4Dq^
} `Uu^I
} G &m>Ov$#&
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} >h|UC J1
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归并排序: TeOFAIU
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package org.rut.util.algorithm.support; Lqg7D\7j
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import org.rut.util.algorithm.SortUtil; <Wp`[S]r
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/** A[K:/tB
* @author treeroot G1,Ro1
* @since 2006-2-2 q=T<^Tk#e
* @version 1.0 ^.nwc#
*/ ?SBh^/zf
public class MergeSort implements SortUtil.Sort{ Kw)C{L5a
ytg7p 5{!i
/* (non-Javadoc) .0rJIO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^XtHF|%0T
*/ $XU-[OF%:9
public void sort(int[] data) { ^!N;F"
int[] temp=new int[data.length]; ~Ay
mergeSort(data,temp,0,data.length-1); S^*(ALFPj
} :h3#1fko
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private void mergeSort(int[] data,int[] temp,int l,int r){ Fj'\v#h
int mid=(l+r)/2; E>o&GYc
if(l==r) return ; # Lu4OSM+
mergeSort(data,temp,l,mid); 8Ng))7g!
mergeSort(data,temp,mid+1,r); "-G.V#zI
for(int i=l;i<=r;i++){ [RroHXdk+
temp=data; >?H_A
} <6~/sa4GN
int i1=l; A{xSbbDk
int i2=mid+1; !.x=r
for(int cur=l;cur<=r;cur++){ O%rS;o
if(i1==mid+1) :==UDVP
data[cur]=temp[i2++]; LX&=uv%-^
else if(i2>r) !H2C9l:rd
data[cur]=temp[i1++]; '5&B~ 1&
else if(temp[i1] data[cur]=temp[i1++]; &Z#Vw.7U
else 8Xt=eL/P
data[cur]=temp[i2++]; "i;*\+x
} &e5^v
} "Wzij&WkQ
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} F>hVrUD8
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改进后的归并排序: Ktj(&/~}
3/]f4D{MMY
package org.rut.util.algorithm.support; -K{\S2
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import org.rut.util.algorithm.SortUtil; ;tZ}i4Ud
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/** p1[WGeV
* @author treeroot f)!{y>Q
* @since 2006-2-2 &q kl*#]
* @version 1.0 wpPxEp/
*/ c/,|[t
public class ImprovedMergeSort implements SortUtil.Sort { >rQ)|W=i
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private static final int THRESHOLD = 10; ~cWLu5
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/* ]}*G[[
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* (non-Javadoc) +LvZ87O^~
* SV$ASs
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X F0*d~4
*/ >QbI)if`1
public void sort(int[] data) { |wl")|b%
int[] temp=new int[data.length]; |2+c DR
mergeSort(data,temp,0,data.length-1); lUm}nsp=X
} lW@:q04Z$
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private void mergeSort(int[] data, int[] temp, int l, int r) { av$\@4I
int i, j, k; #dXZA>b9
int mid = (l + r) / 2; ?L.p9o-S0
if (l == r) #oS
return; -F~9f>
if ((mid - l) >= THRESHOLD) Q'vIeG"o
mergeSort(data, temp, l, mid); eFeCS{LV+
else J@&$U7t
insertSort(data, l, mid - l + 1); "@):*3
4
if ((r - mid) > THRESHOLD) @5POgQ8
mergeSort(data, temp, mid + 1, r); [K^q:3R
else B@:XC&R^
insertSort(data, mid + 1, r - mid); `jl. f
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for (i = l; i <= mid; i++) { X]f#w
temp = data; k/6Gj}l'o
} FL*w(Br.
for (j = 1; j <= r - mid; j++) { uvAy#,
temp[r - j + 1] = data[j + mid]; QyBK*uNdV
} 9=sMKc%!-
int a = temp[l]; lqwJ F &
int b = temp[r]; ~S~x@&yR
for (i = l, j = r, k = l; k <= r; k++) { iKCTYXN1(
if (a < b) { +=lcN~U2
data[k] = temp[i++]; RaJ}>e
a = temp; FkkZyCqZ`
} else { #6#BSZ E
data[k] = temp[j--]; #gr+%=S'6C
b = temp[j]; m/"=5*pA
} &