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。 x";.gjI |g
插入排序: y8*@dRrq
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package org.rut.util.algorithm.support; 1X"H6j[w
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import org.rut.util.algorithm.SortUtil; |@L &yg,x
/** 7R<u=U
* @author treeroot Ed&,[rC
* @since 2006-2-2 Na 9l#
* @version 1.0 $
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*/ .V 3X#t
public class InsertSort implements SortUtil.Sort{ PP[)h,ZL*
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/* (non-Javadoc) yCkW2p]s,K
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %{~mk[d3
*/ -?w v}o
public void sort(int[] data) { %Di7u- x
int temp; <aSLm=
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _h=<_Z
} AV[P QI
} JIbzh?$aD
} XJlDiBs9=Q
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} b!5tFX;J
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冒泡排序: gvc'
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package org.rut.util.algorithm.support; *VC4s`<
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import org.rut.util.algorithm.SortUtil; sx( l
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/** fyg~KF}
* @author treeroot &pMlt7
* @since 2006-2-2 ??zABV
* @version 1.0 )-9w3W1r
*/ mam5G!$
public class BubbleSort implements SortUtil.Sort{ *Nf4bH%MN
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/* (non-Javadoc) )>/j&>%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^tg6JB;s
*/ !: EW21m
public void sort(int[] data) { lQ<#jxp
int temp; tU)r[2H2
for(int i=0;i for(int j=data.length-1;j>i;j--){ 0bPJEEd
if(data[j] SortUtil.swap(data,j,j-1); k$0|^GL8
} i_9Cc$Qh<
} 9B#)h)h(=
} ,LW(mdIe(
} s9_`Wrg?
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} =Qj+Ug'
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选择排序: Yn$>QS 4
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package org.rut.util.algorithm.support; c5iormb"#
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import org.rut.util.algorithm.SortUtil; -@ UN]K
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/** K.#,O+-Kg`
* @author treeroot /UaNYv/
* @since 2006-2-2 C6D=>%uY
* @version 1.0 ^`TKvcgIc
*/ 3D$\y~HU
public class SelectionSort implements SortUtil.Sort { 0+n&BkS'
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/* TRySl5jx@
* (non-Javadoc) :_fjml/
* p;n3`aVh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zO).<xIq+
*/ n $O.>
public void sort(int[] data) { +9 16ZPk
int temp; qUEd
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for (int i = 0; i < data.length; i++) { iJdrY6qd
int lowIndex = i; J I+KS
for (int j = data.length - 1; j > i; j--) { ^:cb
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if (data[j] < data[lowIndex]) { wv7p,9Z[
lowIndex = j; OXIu>jF
} yd0=h7s
} _>jrlIfc
SortUtil.swap(data,i,lowIndex); ;9p#xW6
} =q"w2b&
} [$1: &!(!
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} [U%ym{be^
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Shell排序: @Hspg^
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package org.rut.util.algorithm.support; IFC%%It5,
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import org.rut.util.algorithm.SortUtil; {FV,j.D
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/** VVI8)h8
* @author treeroot fW5"4,
* @since 2006-2-2 !7mvyc!'!
* @version 1.0 k\+y4F8$x
*/ NK
public class ShellSort implements SortUtil.Sort{ Rm,[D)D^0N
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/* (non-Javadoc) B&4fYpn
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e'k;A{Oh
*/ }J+ce
public void sort(int[] data) { %jbJ6c
for(int i=data.length/2;i>2;i/=2){ )){PBT}t]
for(int j=0;j insertSort(data,j,i); &jXca| wAR
} pIID=8RJ.
} Wz6]*P`qv
insertSort(data,0,1); ~8H&m,{j
} m0xJ05Zx
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/** PZ
* @param data )XmCy"xx
* @param j pgz:F#>
* @param i klK-,J
*/ #;\L,a|>*
private void insertSort(int[] data, int start, int inc) { p|&ZJ@3
int temp; P[Y{LKAbb
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); $'A4RVVT
} O3^98n2
} ^ [X|As2
} u"`5
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} :DOr!PNA
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快速排序: 4c5^7";P
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package org.rut.util.algorithm.support; l?[{?Luq
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import org.rut.util.algorithm.SortUtil; 7>nhIp))
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/** e={k.y}x}
* @author treeroot yPf?"W
* @since 2006-2-2 wFK:Dp_^
* @version 1.0 MuDFdbtR
*/ nwa\Lrh
public class QuickSort implements SortUtil.Sort{ ;yk9(wea}"
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/* (non-Javadoc) V+qFT3?-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d u.HSXK
*/ C-s>1\I
public void sort(int[] data) { 3+CSQb8
quickSort(data,0,data.length-1); EpRXjz
} /~H[= Pf
private void quickSort(int[] data,int i,int j){ Zvd ;KGO(a
int pivotIndex=(i+j)/2; r+imn&FK8
file://swap 52>[d3I3
SortUtil.swap(data,pivotIndex,j); 4mEzcwo'
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int k=partition(data,i-1,j,data[j]); 8q_1(& O
SortUtil.swap(data,k,j); JfI aOhKs]
if((k-i)>1) quickSort(data,i,k-1); . o-0aBG
if((j-k)>1) quickSort(data,k+1,j); C/mg46
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} pY^pTWs(
/** AC9{*K[
* @param data XHWh'G9
* @param i J|n(dVen/
* @param j 2-B6IPeI
* @return 9uA,
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*/ Jy]FrSm^
private int partition(int[] data, int l, int r,int pivot) { 8!Wfd)4=,F
do{ [NQmL=l
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 9T8|y]0F
SortUtil.swap(data,l,r); B1|?RfCe
} Qy4X#wgD
while(l SortUtil.swap(data,l,r); 8B}'\e4i
return l; !a' K &
} yr
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} ]XmQ]Yit
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改进后的快速排序: 6P0y-%[Gk
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package org.rut.util.algorithm.support; }*?yHJ3
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import org.rut.util.algorithm.SortUtil; [yO=S0 e
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/** !nec 7
* @author treeroot gE\A9L~b
* @since 2006-2-2 " <<A
* @version 1.0 7sj<|g<h(_
*/ U5|B9%:&
public class ImprovedQuickSort implements SortUtil.Sort { G1kDM.L
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private static int MAX_STACK_SIZE=4096; }16&1@8
private static int THRESHOLD=10; l*$WX=h6n
/* (non-Javadoc) ?g5iok {
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4BHtR017r
*/ ?lF mXZy`
public void sort(int[] data) { >NJjS8f5
int[] stack=new int[MAX_STACK_SIZE]; %,33gZzf
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int top=-1; 66/Z\H^d
int pivot; xcHen/4X
int pivotIndex,l,r; <#zwKTmK1
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stack[++top]=0; `tX@8|
stack[++top]=data.length-1; ;?0_Q3IML
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while(top>0){ D)y{{g*Lnm
int j=stack[top--]; _8al
int i=stack[top--]; 5f8"j$Az
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pivotIndex=(i+j)/2; xtOx|FkYcl
pivot=data[pivotIndex]; n;%y
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SortUtil.swap(data,pivotIndex,j); q1H~
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file://partition FQ U\0<5
l=i-1; g`kY]lu
r=j; ZOp^`c9~
do{ oL#xDG
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); +a #lofhv
SortUtil.swap(data,l,r); Gv;;!sZ
} Jff 79)f
while(l SortUtil.swap(data,l,r); JwjI{,jY
SortUtil.swap(data,l,j); Rl1$?l6Rf
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if((l-i)>THRESHOLD){ \N? 7WQ
stack[++top]=i; FtN}]@F
stack[++top]=l-1; 5!tb$p#z
} 3!>/smb!
if((j-l)>THRESHOLD){ +yCTH
stack[++top]=l+1; mqdOu{kQ
stack[++top]=j; '6O|H
} $.wA?`1aSk
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} !Ri
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file://new InsertSort().sort(data); Z{} n8b*
insertSort(data); R0vww_fz
}
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/** m*`cuSU|o
* @param data 4\\.n
*/ i =-8@
private void insertSort(int[] data) { eI0F!Yon
int temp; MO-!TZ+6
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); w(Gz({l+
} kymn)Ea
}
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} xHHV=M2l(s
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} `os8;`G
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归并排序: <~N%W#z/
yQ'eu;+]
package org.rut.util.algorithm.support; ;@9e\!%
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import org.rut.util.algorithm.SortUtil; vnTq6:f#M
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/** .A(i=!{q
* @author treeroot |:N>8%@6c
* @since 2006-2-2 ocwE_dR{
* @version 1.0 +1/b^Ac
*/ [A]Ca$':
public class MergeSort implements SortUtil.Sort{ JD ]OIh
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/* (non-Javadoc) 0vn[a,W<A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p0Gk j-
*/ +RS$5NLH
public void sort(int[] data) { 5KJ%]B(H2
int[] temp=new int[data.length]; e=7W7^"_
mergeSort(data,temp,0,data.length-1); &+G;R
} R]Ek}1~?
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private void mergeSort(int[] data,int[] temp,int l,int r){ ei|cD[
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int mid=(l+r)/2; \DS^i`o)rY
if(l==r) return ; MxTmWsaW
mergeSort(data,temp,l,mid); ]-:1se
mergeSort(data,temp,mid+1,r); doM?8C#`
for(int i=l;i<=r;i++){ \Tyf *:_F>
temp=data; 1Cv#nhmp
} O#:&*Mv
int i1=l; {]`p&@
int i2=mid+1; f?^S bp
for(int cur=l;cur<=r;cur++){ =m9 i)Q
if(i1==mid+1) )|MJnx9
data[cur]=temp[i2++]; oNIFx5*Z
else if(i2>r) 3$_*N(e
data[cur]=temp[i1++]; 7}%H2$Do
else if(temp[i1] data[cur]=temp[i1++]; HxIoA
else P6YQK+
data[cur]=temp[i2++]; B?3juyB`--
} hVM2/j
} r|fO7PD
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} Xm|ib%no
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改进后的归并排序: K6B4sE
8teJ*sz
package org.rut.util.algorithm.support; K&dT(U
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import org.rut.util.algorithm.SortUtil; kiX%3(
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/** \[ M_\&GC
* @author treeroot $;`I,k$0>~
* @since 2006-2-2 u-szt ? O|
* @version 1.0 :u/mTZDi
*/ `Mk4sKU\a
public class ImprovedMergeSort implements SortUtil.Sort { qfrNi1\9-
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private static final int THRESHOLD = 10; q@ZlJ3%l,
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/* NXI[q'y
* (non-Javadoc) S-!=NX&C
* 0
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "hPCQp`Tj
*/ <lj\#'G3
public void sort(int[] data) { R ]P;sk5
int[] temp=new int[data.length]; >1ZJ{se
mergeSort(data,temp,0,data.length-1); 6 P*O&1hv
} sS9%3i/>
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private void mergeSort(int[] data, int[] temp, int l, int r) { %4,?kh``D
int i, j, k; m|F:b}0Hb
int mid = (l + r) / 2; <2<87PU
if (l == r) x=*L-
return; aWGon]2p
if ((mid - l) >= THRESHOLD) ^npJUa
mergeSort(data, temp, l, mid); }C,O
else ;Z9IZ~
insertSort(data, l, mid - l + 1); B4Lx{uno
if ((r - mid) > THRESHOLD) ,S!w'0k|n
mergeSort(data, temp, mid + 1, r); CW`!}yu%
else f Iy]/
insertSort(data, mid + 1, r - mid); >emcJVYV`[
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for (i = l; i <= mid; i++) { g_z/{1$
temp = data; .'d2J> ~N
} 3n48 %5
for (j = 1; j <= r - mid; j++) { }ZzLs/v%X
temp[r - j + 1] = data[j + mid]; u|fXP)>.
} ]db@RbaH
int a = temp[l]; kg>>D
int b = temp[r]; o@k84+tn(
for (i = l, j = r, k = l; k <= r; k++) { A5nO=
if (a < b) { wa:0X)KC?
data[k] = temp[i++]; Nfn(Xn*J-
a = temp; c\.P/~
} else { ,.v7FM^gO
data[k] = temp[j--]; 7bF*AYM
b = temp[j]; Y7SacRO
} CdZ BG
} v\%G|8+]
} 33a uho
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/** 79BaDB`{a
* @param data `.v(fC
* @param l s|-FH X
* @param i (
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*/ HOZRYIQB
private void insertSort(int[] data, int start, int len) { !'0S0a8
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); >NM\TLET~
} Bs!4H2@{(]
} FxRXPt
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} r;gP}H ?
} y%cO#P@
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堆排序: S$[k Q|Am
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package org.rut.util.algorithm.support; NlF}{
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import org.rut.util.algorithm.SortUtil; Vrp[r *V@E
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/** q_t4OrLr=
* @author treeroot ?c#$dc"
* @since 2006-2-2 ,pt%)
c
* @version 1.0 8;" *6vHZ
*/ (^n*Am;zlH
public class HeapSort implements SortUtil.Sort{ 51xk>_Hm}|
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/* (non-Javadoc) ziEz.Wn"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^^Jnv{)
*/ 9|WV~
public void sort(int[] data) { ga0'zo9K
MaxHeap h=new MaxHeap(); Ph,-sR
h.init(data); cQUC.TZ_
for(int i=0;i h.remove(); i7Z=|&
System.arraycopy(h.queue,1,data,0,data.length); ]axh*J3`i
} *xs!5|n+
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private static class MaxHeap{ )S@jDaU<