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。 HP
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插入排序: ~RIn7/A
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package org.rut.util.algorithm.support; n&;-rj^qq
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import org.rut.util.algorithm.SortUtil; ]YqeI*BX
/** [bZASeh
* @author treeroot :^*9Eb
* @since 2006-2-2 n=tg{_9f%
* @version 1.0 <'l;j"&lp
*/ (14J~MDB
public class InsertSort implements SortUtil.Sort{ B%^ $fJ|
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/* (non-Javadoc) ,.PW
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zm`^=cV
*/ {xS\CC(g
public void sort(int[] data) { x"xtILrI
int temp; Sh2;^6d
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Tt*n.HA
}
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} :"e,&
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} Z2soy-
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} +'f38D*
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冒泡排序: + jIE,N
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package org.rut.util.algorithm.support; `Z!NOC
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import org.rut.util.algorithm.SortUtil; FdVWj
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/** )Og,VXEB
* @author treeroot KtY_m`DY4R
* @since 2006-2-2 ecl$z6'c
* @version 1.0 IsjD-t
*/ \/
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public class BubbleSort implements SortUtil.Sort{ Gkq<?q({t
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/* (non-Javadoc) J;S@Q/s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a}]zwV&
*/ $YCy,Ew
public void sort(int[] data) { |=CV.Su
int temp; Tr@}
for(int i=0;i for(int j=data.length-1;j>i;j--){ A! j4;=}
if(data[j] SortUtil.swap(data,j,j-1); KN"V(<!)~
} <^,5z!z}
} I];Hx'/<~
} l<l6Ey(
} eE'2B."F
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} kb>/R/,9
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选择排序: }\oy?_8~
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package org.rut.util.algorithm.support; ctg[C$<q|
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import org.rut.util.algorithm.SortUtil; .sk$ @Q
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/** "jyh.@<
* @author treeroot 38hA guZX
* @since 2006-2-2 P{!r<N
* @version 1.0 c>*RQ4vE
*/ @'yD(ZMAz
public class SelectionSort implements SortUtil.Sort { Y=#g_(4*
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/* i1#\S0jN
* (non-Javadoc) 9rn[46s`
* k8;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D%0GXUp
*/ )D:I@`*
public void sort(int[] data) { N}*|*!6hI
int temp; n0T'"i[
for (int i = 0; i < data.length; i++) { M)U 32gI:
int lowIndex = i; HZ1e~IIw
for (int j = data.length - 1; j > i; j--) { @qfVt
if (data[j] < data[lowIndex]) { v_gQCS
lowIndex = j; 1o;+.]B
} 5$e|@/(0
} TuBl9 p'6
SortUtil.swap(data,i,lowIndex); ]tVU$9D
} tCk;tu!d
} ">G|\_ZF
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} 'j)xryw
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Shell排序: w6fVZY4
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package org.rut.util.algorithm.support; eoS8e$}
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import org.rut.util.algorithm.SortUtil; ]Xur/C2A
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/** ov=[g l
* @author treeroot K>h=
* @since 2006-2-2 8gv\`
* @version 1.0 aIv>X@U}
*/ @}K'Ic
public class ShellSort implements SortUtil.Sort{ McgTTM;E
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/* (non-Javadoc) 3+<}Hm+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8xQ5[Ov
*/ <|M cE
public void sort(int[] data) { 0@yHT-Dy
for(int i=data.length/2;i>2;i/=2){ J>YwMl
for(int j=0;j insertSort(data,j,i); !79^M
} wjF/c
} h7NS9CgO
insertSort(data,0,1); jB*%nB*x
} -;TqdL@
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/** bUf2uWy7
* @param data [<Wo7G1s
* @param j lCDu,r;\
* @param i 2Y)3Ue
*/ jmbwV,@Q2
private void insertSort(int[] data, int start, int inc) { (KDUX
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int temp; }@Ij}Ab>
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); `/:ZB6
} #7IM#tc@
} G}d-L!YbE'
} r=<Oy1m/
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} C:/O]slH
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快速排序: :=BFx"Y
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package org.rut.util.algorithm.support; Sni Ck*T,
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import org.rut.util.algorithm.SortUtil; !>g_9'n'
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/** Ll%CeP
* @author treeroot 5Xu2MY=
* @since 2006-2-2 EX%KfWDr
* @version 1.0 _ cK"y2
*/ wRn]
public class QuickSort implements SortUtil.Sort{ [];*9vxW
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/* (non-Javadoc) ?GPTJ#=j=]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CpuL[|51
*/ t<M^ /xe2
public void sort(int[] data) { 8<Cu S
quickSort(data,0,data.length-1); RU3:[(7
} WG8}}`F|
private void quickSort(int[] data,int i,int j){ LfEeFF=#n
int pivotIndex=(i+j)/2; 5w)tsGX\
file://swap V?Y;.n&y
SortUtil.swap(data,pivotIndex,j); "d60IM#N?
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int k=partition(data,i-1,j,data[j]); Vu '3%~
SortUtil.swap(data,k,j); -y70-K3
if((k-i)>1) quickSort(data,i,k-1); Z,%^BAJ
if((j-k)>1) quickSort(data,k+1,j); aA?Uf~ "t
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} 96UL](l(`
/**
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* @param data .5*h']iFr1
* @param i }{Ab:+aNd
* @param j T u>5H`
* @return DT`TA#O
*/ m?DI]sIv#
private int partition(int[] data, int l, int r,int pivot) { f 4CS
do{ ezn%*X
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); MaDdiyeC
SortUtil.swap(data,l,r); vt@5Hb)
} n $RhD93
while(l SortUtil.swap(data,l,r); qjQR0MC
return l; 1zwk0={x-%
} '\8gY((7
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} %UDz4?zx
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改进后的快速排序: XKD0n^L[
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package org.rut.util.algorithm.support; 36mp+}R#
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import org.rut.util.algorithm.SortUtil; (jbHV.]P9
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/** v?e@`;-
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* @author treeroot F?#^wm5TZ
* @since 2006-2-2 ru#,pJ=O(
* @version 1.0 p4QQ5O$;
*/ -FRMal4Pg0
public class ImprovedQuickSort implements SortUtil.Sort { |[apLQ6
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private static int MAX_STACK_SIZE=4096; eT33&:n4
private static int THRESHOLD=10; )Qe<XJH!
/* (non-Javadoc) [=k$Q
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f]Jn\7j4
*/ THC7e>P4
public void sort(int[] data) { G`H4#@]
int[] stack=new int[MAX_STACK_SIZE]; Fk(nf9M%
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int top=-1; to-DXT.
int pivot; `@%hz%8Y
int pivotIndex,l,r; "Sm'TZx
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stack[++top]=0; 8S*3W3HY
stack[++top]=data.length-1; 4&b*|"Iw
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while(top>0){ g=*'kj7c3
int j=stack[top--]; ?=zF]J:G1w
int i=stack[top--]; A[W3.$s
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pivotIndex=(i+j)/2; %d-|C.
pivot=data[pivotIndex]; L'(ei7Z
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SortUtil.swap(data,pivotIndex,j); PkM]jbLe8
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file://partition ?8AV-rRX
l=i-1; v@m2c_,
r=j; t&5N{C:
do{ O5X@'.#rU
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 8EbJ5wu/%S
SortUtil.swap(data,l,r); ?|4Y(0N
} 'cp1I&>
while(l SortUtil.swap(data,l,r); CK[w0VCT
SortUtil.swap(data,l,j); +H"[WZ5
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if((l-i)>THRESHOLD){ EWz,K]_'
stack[++top]=i; '" MT$MrT
stack[++top]=l-1; MTI[Mez
} 'M20v-[
if((j-l)>THRESHOLD){ {`RCh]W
stack[++top]=l+1; M N-j$-y}
stack[++top]=j; 'Cr2&
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} w3hG\2)[HS
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} -hy`Np
file://new InsertSort().sort(data); %=w@c
insertSort(data); o2'^MxKb T
} 'xK ,|U
/** 7-#R[8S
* @param data IOL5p*:gz
*/ JWB3;,S
private void insertSort(int[] data) { 9Rf})$o+
int temp; U5[,UrC
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); L0^rw|Z%'
} "UM*(&
} G~.bi<(v
} )t?_3'W
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} V1l9T_;f
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归并排序: XEX-NE"]
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package org.rut.util.algorithm.support; Xi
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import org.rut.util.algorithm.SortUtil; w *Txc}
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/** 1yK=Yf%B
* @author treeroot |'+ [ '
* @since 2006-2-2 V#Pz`D
* @version 1.0 W{!Slf
*/ 5f}GV0=n
public class MergeSort implements SortUtil.Sort{ 7g%.:H=
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/* (non-Javadoc) T GuvyY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fU^6h`t
*/ b0:5i<"w6
public void sort(int[] data) { SbYsa
int[] temp=new int[data.length]; du5|/
mergeSort(data,temp,0,data.length-1); JI7.:k;
} lm[LDtc
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private void mergeSort(int[] data,int[] temp,int l,int r){ S(NUuu}S
int mid=(l+r)/2; \L]T|]}(
if(l==r) return ; @C"w
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mergeSort(data,temp,l,mid); &60#y4
mergeSort(data,temp,mid+1,r); d{FD.eI0
for(int i=l;i<=r;i++){ au?5^u\
temp=data; 6>e YG<y{
} y&(R1Y75
int i1=l; mA" 82"
int i2=mid+1; .NX>d@
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for(int cur=l;cur<=r;cur++){
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if(i1==mid+1) 4+2hj*I
data[cur]=temp[i2++]; r$/.x6g//
else if(i2>r)
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data[cur]=temp[i1++]; WEZ)>[Xj?
else if(temp[i1] data[cur]=temp[i1++]; X)^&5;\`
else ;sZHE&+
data[cur]=temp[i2++]; 'i7!"Y6>
} KOP*\\1
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} ?cmv;KV
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} MoP,a9p
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改进后的归并排序: 38 HnW
6~y7A<[^
package org.rut.util.algorithm.support; W:XN!
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import org.rut.util.algorithm.SortUtil; bR&<vrMmrA
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/** dq
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* @author treeroot *Jm U",X
* @since 2006-2-2 <Q%:c4N
* @version 1.0 ?[~)D}] j
*/ v>]^wH>/"
public class ImprovedMergeSort implements SortUtil.Sort { N \Wd0b
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private static final int THRESHOLD = 10; a"|\n_
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/* U<Z\jT[
* (non-Javadoc) HZ.Jc"+M
* V9r58hbVT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {I~[a#^
*/
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public void sort(int[] data) { Pln*?o
int[] temp=new int[data.length]; jy2@t *
mergeSort(data,temp,0,data.length-1); B$kp\yL
} f8X/kz
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private void mergeSort(int[] data, int[] temp, int l, int r) { v*.#LJEm
int i, j, k; DfL>fk
int mid = (l + r) / 2; AG==A&d>$
if (l == r) 4t;m^Iv
return; d;c<" +
if ((mid - l) >= THRESHOLD) kn 1+lF@
mergeSort(data, temp, l, mid); A_\ZY0Xt
else SjRR8p<
insertSort(data, l, mid - l + 1); !&=%#i
if ((r - mid) > THRESHOLD) D8I)3cXa'
mergeSort(data, temp, mid + 1, r); zcTY"w\b
else :1JICxAU
insertSort(data, mid + 1, r - mid); .7EZB
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for (i = l; i <= mid; i++) { }bxx]rDl
temp = data; `+go|
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} Q8sCI An{
for (j = 1; j <= r - mid; j++) {
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temp[r - j + 1] = data[j + mid]; HxmCKW!
} YvP u%=eF
int a = temp[l]; [
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int b = temp[r]; wcI4Y0+J
for (i = l, j = r, k = l; k <= r; k++) { B hnwb0b<
if (a < b) { NXyuv7%5=
data[k] = temp[i++]; te b~KM
a = temp; ~jqh&u$(
} else { =*u:@T=d5
data[k] = temp[j--]; Gr
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b = temp[j]; VSI.c`=,
} al3[Ph5G
} nPj/C7j
} LpJ_HU7@lk
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/** <Gr775"
* @param data }nW) +
* @param l c*"TmDY
* @param i s3LR6Z7;i
*/ J&