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。 *"rgK|CM$
插入排序: @NBWNgBv
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package org.rut.util.algorithm.support; cY/!z
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import org.rut.util.algorithm.SortUtil; r()%s3$q
/** )9_jr(s
* @author treeroot p#vZYwe=L
* @since 2006-2-2 ">b~k;M?
* @version 1.0 y/'^r?
*/ +R7";.
public class InsertSort implements SortUtil.Sort{ KM$5ZbCF:
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/* (non-Javadoc) RG(m:N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (s?`*i:2
*/ sA18f2
public void sort(int[] data) { hK=\O)
int temp; }5n((7@X
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _=0;5OrK1X
} gcImk0NIY
} xl5n(~g)p
} {"33 .^=
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冒泡排序: a/@<KnT
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package org.rut.util.algorithm.support; i4TU}.h8
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import org.rut.util.algorithm.SortUtil; )"7hyW 5
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/** MWSx8R)PN
* @author treeroot ?sl 7C
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* @since 2006-2-2
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* @version 1.0 lD09(|`
*/ L2ePWctq}
public class BubbleSort implements SortUtil.Sort{ B`Q.<Lqu
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/* (non-Javadoc) !O$ */7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]2n&DJu
*/ Y""-U3;T~
public void sort(int[] data) { e_J_rx
int temp; 7^k`:Z
for(int i=0;i for(int j=data.length-1;j>i;j--){ { .KCK_ d
if(data[j] SortUtil.swap(data,j,j-1); o{*8l#x8
} dfB#+wh
} RVN"lDGA
} @+",f]
} =YX/]g|9K
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} (_ov_3
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选择排序: HtOo*\Ne
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package org.rut.util.algorithm.support; ZTG*|
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import org.rut.util.algorithm.SortUtil; :oF\?e
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/** $Aww5G5e
* @author treeroot {! RW*B
* @since 2006-2-2 J'.:l} g!1
* @version 1.0 sm}q&m]ad
*/ ErF;5ec
public class SelectionSort implements SortUtil.Sort { EWN$ILdD
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/* ^DHFP-G?e
* (non-Javadoc) 9bjjo;A
* JJ56d)37.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h$ M+Yo+
*/ YZ\$b=-
public void sort(int[] data) { !TY4C`/
int temp; j' -akXo<
for (int i = 0; i < data.length; i++) { gcr,?rE<
int lowIndex = i; zW%-Z6%D
for (int j = data.length - 1; j > i; j--) { w5jH#ja
if (data[j] < data[lowIndex]) { wP1dPl_j:0
lowIndex = j; TQK>w'L
} >q
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} u*[,W-R&
SortUtil.swap(data,i,lowIndex); A<iF37.
} ZeK*MPxQ
} Z~g~,q
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} lfu1PCe5
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Shell排序: fl~k')s
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package org.rut.util.algorithm.support; aEX;yy*
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import org.rut.util.algorithm.SortUtil; |LKhT4rE
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/** }"fP,:n"KN
* @author treeroot ksY^w+>(!
* @since 2006-2-2 iAf, :g
* @version 1.0 RrLQM!~
*/ 2Iz@lrO6
public class ShellSort implements SortUtil.Sort{ PiI ):B>
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/* (non-Javadoc) >U"f1q*$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M#})
*/ ZcX%:ebKS
public void sort(int[] data) { e }/c`7M
for(int i=data.length/2;i>2;i/=2){ U_!"&O5lr
for(int j=0;j insertSort(data,j,i); dT,X8 "
} 7*^\mycv
} -O~WHi5}
insertSort(data,0,1); (Tn*;Xjq
} )rhKWg
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/** :<ujk
* @param data 7H[#
* @param j OjMDxG
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* @param i OdRXNk:k-j
*/ Qo?"hgjlqm
private void insertSort(int[] data, int start, int inc) { wias]u|
int temp; Q(AOKp,F
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); xQ1&j,R]
} %S>lPt
} ]S,I}NP
} %Iv+Y$'3B
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} FO3!tJ\L
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快速排序: /RmLV
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package org.rut.util.algorithm.support; K"Nq_Ddwd
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import org.rut.util.algorithm.SortUtil; ~ ;)@a
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/** Dr(.|)hv[&
* @author treeroot :BMU c-[
* @since 2006-2-2 :+]6SC0ql
* @version 1.0 e[915Q _
*/ u9mMkzgSkP
public class QuickSort implements SortUtil.Sort{ sdS<-!
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/* (non-Javadoc) ^fnRzX
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1P8$z:|~
*/ o1zc`Ibd
public void sort(int[] data) { q7 Uu 8JXF
quickSort(data,0,data.length-1); f=~@e#U
}
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private void quickSort(int[] data,int i,int j){ |[!xLqG
int pivotIndex=(i+j)/2; FD_0FMZ9,
file://swap ,dBtj8=
SortUtil.swap(data,pivotIndex,j); _z,/!>J
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int k=partition(data,i-1,j,data[j]); jGI!}4_
SortUtil.swap(data,k,j); =*Wl;PI'
if((k-i)>1) quickSort(data,i,k-1); @!%<JZEz3
if((j-k)>1) quickSort(data,k+1,j); n{4&('NRFP
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} y*Ex5N~JC
/** 5Odi\SJ&
* @param data f=/ S]o4/3
* @param i k qwS/s
* @param j !S(jT?'w
* @return Ks7s2 vK^
*/ n)`*{uv$
private int partition(int[] data, int l, int r,int pivot) { _?q\tyf3
do{ zKfb
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); .^JID~<?#
SortUtil.swap(data,l,r); PJkMn
} /"iYEr%_
while(l SortUtil.swap(data,l,r); 6_zL#7E'
return l; r)X?H
} =N7N=xY
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} 2vj)3%:7#E
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改进后的快速排序: D*D83z OzN
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package org.rut.util.algorithm.support; ZP%^.wxC
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import org.rut.util.algorithm.SortUtil; db#y]>^l
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/** qY14LdC}~
* @author treeroot [FyE{NfiJ%
* @since 2006-2-2 6"_FjS3Sl
* @version 1.0 JvHJ*E
*/ dC,F?^
public class ImprovedQuickSort implements SortUtil.Sort { C=PBF\RkKu
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private static int MAX_STACK_SIZE=4096; ? `FI!3j
private static int THRESHOLD=10; t~U:{g~
/* (non-Javadoc) d6hWmZVC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p(0!TCBs
*/ 2d$hgR#v
public void sort(int[] data) { u{>5
int[] stack=new int[MAX_STACK_SIZE]; Hk6Dwe[y
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int top=-1; Iupk+x>
int pivot; 3j.f3~"
int pivotIndex,l,r; W&bh&KzCW
Y=}b/[s6;
stack[++top]=0; ^lf;Lc
stack[++top]=data.length-1; [ HNGTde&
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while(top>0){ Yj0Ss{Ep
int j=stack[top--]; u:m]-'
int i=stack[top--]; CH9#<?l
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pivotIndex=(i+j)/2; p(Qm\g<
pivot=data[pivotIndex]; =BX<;vU
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SortUtil.swap(data,pivotIndex,j); 5%4:)s{4|
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file://partition c>DAR
l=i-1; u.!Pda
r=j; WgxlQXi-B
do{ ~@sx}u
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); TSuHY0.cp
SortUtil.swap(data,l,r); C@Wm+E~;8
} sKHUf1
while(l SortUtil.swap(data,l,r); <cepRjDn
SortUtil.swap(data,l,j); C= hE@
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if((l-i)>THRESHOLD){ *5|\if\
stack[++top]=i; ld2\/9+n
stack[++top]=l-1; Bxm^Arc>
} @~a52'\
if((j-l)>THRESHOLD){ -?e~S\JH
stack[++top]=l+1; NO9Jre
stack[++top]=j; wF38c]r`\<
} 2V F|T'h
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} 6o,,w^
file://new InsertSort().sort(data); a(BC(^1!
insertSort(data); k`TEA?RfQ
} # <&=ZLN
/** J-I7K!B
* @param data JBjz2$ZM
*/ 0BVMLRB
private void insertSort(int[] data) { L{5zA5#m
int temp; ]p#Zdm1EL
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); n|^-qy'w
} y< 146
} d~[>%&
} n}?kQOg0/
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} ]>`Q"g~0
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归并排序: \6@}HFH
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package org.rut.util.algorithm.support; dd$\Q
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import org.rut.util.algorithm.SortUtil; Grw_SVa^
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/** i4Fw+Z
* @author treeroot |/r@z[t
* @since 2006-2-2 R$w=+%F
* @version 1.0 _;0:wXib=
*/ Dy8Go4
public class MergeSort implements SortUtil.Sort{ :Eob"WH
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/* (non-Javadoc) LU%g>?m.]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ][0HJG{{g
*/ ^{Mx?]z
public void sort(int[] data) { VSP[G ,J.
int[] temp=new int[data.length]; uswz@
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mergeSort(data,temp,0,data.length-1); } 10Dvt>+
} 1hRC
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private void mergeSort(int[] data,int[] temp,int l,int r){ FiFZM
int mid=(l+r)/2; ^&Qaf:M
if(l==r) return ; 3HfT9
mergeSort(data,temp,l,mid); s]=kD
mergeSort(data,temp,mid+1,r); B"{CWH O
for(int i=l;i<=r;i++){ ~[,E
i k
temp=data; (r7~ccy4
} 12k)Ek9
int i1=l; T>LtN
int i2=mid+1; geT<vh Z6
for(int cur=l;cur<=r;cur++){ 5F0sfX
if(i1==mid+1) ~}TVM%0RTq
data[cur]=temp[i2++]; I@x*>
else if(i2>r) %Cm4a49FNi
data[cur]=temp[i1++]; <Ojf&C^Z
else if(temp[i1] data[cur]=temp[i1++]; cvc.-7IO
else Lp{l&-uQ
data[cur]=temp[i2++]; 9$Hgh7'hvs
} h3JIiwv0!
} 3 #jPQ[+
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} ;Hm\?n)a
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改进后的归并排序: ?{^T&<18t
67f#Z&r2k
package org.rut.util.algorithm.support; J)o~FC]b*
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import org.rut.util.algorithm.SortUtil; qKWkgackP
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/** B%r)~?6DM
* @author treeroot Lx(Y=
* @since 2006-2-2 9fe~Q%x=u
* @version 1.0 6Lz&"C,`
*/ \7Zk[)!FL
public class ImprovedMergeSort implements SortUtil.Sort { ^yBx.GrQc
@n})oAC,
private static final int THRESHOLD = 10; m2\ZnC
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/* a*vi&$@`Z1
* (non-Javadoc) |n* I}w^
* (\SxG\`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GKm)wOb(*S
*/ <v0 d8
public void sort(int[] data) { ]l&_Pv!!
int[] temp=new int[data.length]; <;_X=s`f,
mergeSort(data,temp,0,data.length-1); q}+9$v
} ];(w8l
u QCQ$
private void mergeSort(int[] data, int[] temp, int l, int r) { u*PN1E
int i, j, k; 5w{_WR6,
int mid = (l + r) / 2; Z=wLNm H
if (l == r) wn|Sdp
return; ?;}2Z)
if ((mid - l) >= THRESHOLD) P^.L0T5g
mergeSort(data, temp, l, mid); h5B'w
else o3%Gc/6%
insertSort(data, l, mid - l + 1); 6kYn5:BhIi
if ((r - mid) > THRESHOLD) C;STJrew
mergeSort(data, temp, mid + 1, r); -_A0<A .
else ? NVN&zD]
insertSort(data, mid + 1, r - mid); @YV-8;hO
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for (i = l; i <= mid; i++) { &e2") 4oh
temp = data; \W#M]Q
} Qs</.PO
for (j = 1; j <= r - mid; j++) { lwjg57
temp[r - j + 1] = data[j + mid]; +ZXk0sP_<
} >'E'Mp.
int a = temp[l]; oXb}6YC
int b = temp[r]; +=;F vb
for (i = l, j = r, k = l; k <= r; k++) { 'KM@$2tK^q
if (a < b) { r@k&1*&
data[k] = temp[i++]; >5)$Qtz#
a = temp; XCQ=`3f
} else { @K2q*d
data[k] = temp[j--]; m<