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。 ;n:H6cp
插入排序: il `C,CD
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package org.rut.util.algorithm.support; Aw_R
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import org.rut.util.algorithm.SortUtil;
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/** l:k E^ =6
* @author treeroot J\Oc]gi\L
* @since 2006-2-2 L@^!(
* @version 1.0 y7}~T!UyfF
*/ gvwCoCbb
public class InsertSort implements SortUtil.Sort{ f6/\JVi)-
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/* (non-Javadoc) ;1(qGy4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |?pYJkrYO
*/ <7RkM
public void sort(int[] data) { l")o!N?
int temp; Nt,]00S\w
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Q>+_W2~]
} :">~(Rd ZH
} *I;Mp
} s>"WQ|;6
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} u+, jAkr
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冒泡排序: ":ws~Zep
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package org.rut.util.algorithm.support; <T=o]M$
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import org.rut.util.algorithm.SortUtil;
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/** KlSY^(kHR
* @author treeroot swe8
* @since 2006-2-2 'DB({s
* @version 1.0 ]>]H:NEq
*/ S+E3;' H
public class BubbleSort implements SortUtil.Sort{ hGaYQgGq
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/* (non-Javadoc) lfI7&d*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]T28q/B;k
*/ b^|,9en
public void sort(int[] data) { ?),K=E+=U
int temp; 5D q{"@E
for(int i=0;i for(int j=data.length-1;j>i;j--){ r0XGGLFuZl
if(data[j] SortUtil.swap(data,j,j-1); T J"{nB
} a}I z
} 0$dY;,Q .
} 'rcsK
} |Y,X=Ed
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} W1M/Z[h6)5
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选择排序: 4 9+}OIX
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package org.rut.util.algorithm.support; S3[oA&
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import org.rut.util.algorithm.SortUtil; hF?\K^tF
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/** #xE>]U
* @author treeroot s9)8{z
* @since 2006-2-2 hrtN.4p[
* @version 1.0 I[YfF
*/ )-7(Hv1
public class SelectionSort implements SortUtil.Sort { ?(XX
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/* JO;`Kz_$
* (non-Javadoc) U1@P/
* d`rDEa
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vt 5XC~jK
*/ m:o$|7r
public void sort(int[] data) { aG&kl O>m
int temp; Z_TbM^N
for (int i = 0; i < data.length; i++) { -Z#]_C{Y-)
int lowIndex = i; Wug ?CFX+T
for (int j = data.length - 1; j > i; j--) { EC&19
if (data[j] < data[lowIndex]) { 8CHf. SXh
lowIndex = j; 'J<zVD}0
} "\P~Re"EH
} Wn)A/Z ^r
SortUtil.swap(data,i,lowIndex); .m
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} N/SB}Fj
} v,O&UrZ
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} Ymh2qGcj]8
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Shell排序: L&F\"q9q71
wz2)seZY
package org.rut.util.algorithm.support; Lzb [%?
DL/*t.)"et
import org.rut.util.algorithm.SortUtil; W!Os ci
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/** SX<>6vH&
* @author treeroot N,'qMoNf
* @since 2006-2-2 (]uoN4
* @version 1.0 7*W$GCd8
*/ SX94,5 _Q
public class ShellSort implements SortUtil.Sort{ Pxuz {
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/* (non-Javadoc) RyIaT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5nlyb,"^g
*/ "Kf~`0P
public void sort(int[] data) { BB}iBf I'
for(int i=data.length/2;i>2;i/=2){ s#CEhb
for(int j=0;j insertSort(data,j,i); !haXO
} aIyY%QT
} MhXm-<4
insertSort(data,0,1); k-p7Y@`+a
} VHkrPJ[
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/** +R jD\6bJb
* @param data 6O?S r,
* @param j G?X,Y\Lp
* @param i [}Yci:P_ +
*/ 5Ddyb%
private void insertSort(int[] data, int start, int inc) { `Y9}5p
int temp; Y@xeyMzE
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 9(\N+
} I;PO$T
} <.]& FPJ
} GoGgw]h>x
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} E8V\J
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快速排序: }Z%{QJ$z
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package org.rut.util.algorithm.support; -"b3q
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import org.rut.util.algorithm.SortUtil; T_
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/** ;-w PXXR
* @author treeroot I>\?t4t
* @since 2006-2-2 :re(khZq#
* @version 1.0 >LZ)<-Mk
*/ 'cCj@bZ9X
public class QuickSort implements SortUtil.Sort{ {dH<Un(4Z
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/* (non-Javadoc) im%3*bv-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2n,73$s
*/ "+C\f)
public void sort(int[] data) { --hnv/AjI
quickSort(data,0,data.length-1); ?a_q!,8:
} DFH6.0UW
private void quickSort(int[] data,int i,int j){ (9lx5
int pivotIndex=(i+j)/2; WM7/|.HQ
file://swap 9E*K44L/V
SortUtil.swap(data,pivotIndex,j); <W{0@?y
"+Yn;9
int k=partition(data,i-1,j,data[j]); YR`rg;n#
SortUtil.swap(data,k,j); F#R\Ot,hv
if((k-i)>1) quickSort(data,i,k-1);
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if((j-k)>1) quickSort(data,k+1,j); soCHwiE
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} ~&jCz4M
/** -v2q:x'G#
* @param data ZOsn,nF
* @param i ml/O
* @param j J<O_N~$$*
* @return DN_C7\CoA
*/ NGzqiu"J
private int partition(int[] data, int l, int r,int pivot) { hS/'b$#
do{ !~kzxY
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); $S ("-3
SortUtil.swap(data,l,r); =f|a?j,f~
} <;"=ah7A
while(l SortUtil.swap(data,l,r); cC]1D*Bn
return l; LxDhthZi_
} _YUF /B'
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} &g {_.n,
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改进后的快速排序: _QCI<|A
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package org.rut.util.algorithm.support; e4LNnJU\|
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import org.rut.util.algorithm.SortUtil; 2geC3v% 0o
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/** 9jO+ew
* @author treeroot U$Z}<8
* @since 2006-2-2 oa7Hx<Y
* @version 1.0 MPc=cLv
*/ uwzT? C A6
public class ImprovedQuickSort implements SortUtil.Sort { K>6p5*&
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private static int MAX_STACK_SIZE=4096; 5Yr$dNe
private static int THRESHOLD=10; M] *pBc(o0
/* (non-Javadoc) GjG3aqP&!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (o\~2e:
*/ )T_#X!
public void sort(int[] data) { A4x3TW?
int[] stack=new int[MAX_STACK_SIZE]; )UUe5H6Hd0
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int top=-1; z$b!J$A1
int pivot; CxV%/ChJ#
int pivotIndex,l,r; B.jYU
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stack[++top]=0; {D#`+uw
stack[++top]=data.length-1; *@^0xz{\z
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while(top>0){ -GjJrYOU
int j=stack[top--]; S\(_"xJPp
int i=stack[top--]; N|}`p"
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pivotIndex=(i+j)/2; r0>T7yPAK
pivot=data[pivotIndex]; !HYqM(|{.
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SortUtil.swap(data,pivotIndex,j); ] fB{
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file://partition <rs]@J'p
l=i-1; 470Pig>I8
r=j; 5c8x:
e@
do{ Q!v[b{]8
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); H2vEFn V
SortUtil.swap(data,l,r); o5uwa{v
} KMcP !N.I
while(l SortUtil.swap(data,l,r); g~b'}^J
SortUtil.swap(data,l,j); %#~Wk|8} Q
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if((l-i)>THRESHOLD){ f -5ZXpWs'
stack[++top]=i; =KLYR UW
stack[++top]=l-1; QZo l(2~Y
} D.?gV_
if((j-l)>THRESHOLD){ cALs;)z
stack[++top]=l+1; %s>E@[s
stack[++top]=j; /Z_QCj
} KMZ`Wn=
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} |*i-Q @
D
file://new InsertSort().sort(data); WW=7QCi
insertSort(data); @$]h[
} S8l+WF4q
/** f`e.c_n(
* @param data >Mn.|:DF]&
*/ p20Nk$.
private void insertSort(int[] data) { V5+a[`]
int temp; 3]acfCacC
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); VbjW$?
} p
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} ~m7+^c@,
} vNIQc "\-
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} R#>E{[9
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归并排序: z~qQ@u|
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package org.rut.util.algorithm.support; Alz#zBGb
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import org.rut.util.algorithm.SortUtil; &n|gPp77$
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/** G`jhzG
* @author treeroot >\ W" 3.
* @since 2006-2-2 0dW1I|jR
* @version 1.0 9EEHLx"
*/ J']W7!p
public class MergeSort implements SortUtil.Sort{ 5>
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/* (non-Javadoc) DVd/OU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X9 R-GT
*/ ~$B,K]
public void sort(int[] data) { jo;n~>3P
int[] temp=new int[data.length]; /Q-!><riD
mergeSort(data,temp,0,data.length-1); PLD!BD
} )8;'fE[p}
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private void mergeSort(int[] data,int[] temp,int l,int r){ c1i7Rc{q
int mid=(l+r)/2; (c"!0v
if(l==r) return ; 0Ko,S(M_
mergeSort(data,temp,l,mid); TR |; /yJ
mergeSort(data,temp,mid+1,r); l-&f81W
for(int i=l;i<=r;i++){ dU,/!|.K
temp=data; \iFE,z
} (ZYOm
int i1=l; <qBPN{'a"
int i2=mid+1; dZ*o H#B
for(int cur=l;cur<=r;cur++){ LBg#KQ@
if(i1==mid+1) aozk,{9-
data[cur]=temp[i2++]; o9/P/PZ\X
else if(i2>r) ?~!h
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data[cur]=temp[i1++]; &m`
else if(temp[i1] data[cur]=temp[i1++]; =GF+hM/~
else ep5aBrN]"
data[cur]=temp[i2++]; L>B0%TP^
} GCrN:+E0FJ
} <:?&}'aA
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} \ys3&<;b
2.6,c$2tB
改进后的归并排序: cMj<k8.{
3]'3{@{}H
package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; -&c@c@dC
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/** [f'7/w+
* @author treeroot =Zj9F1E[i
* @since 2006-2-2 @:Ns`+ W*
* @version 1.0 Th8xh=F[
*/ ;RU)Q)a)
public class ImprovedMergeSort implements SortUtil.Sort { _Qv4;a
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private static final int THRESHOLD = 10; _u>+H#
*q^'%'
/* ,"D1!0
* (non-Javadoc) G
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* _?{2{^v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DT*/2TH*l
*/ *
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public void sort(int[] data) { 3yTBkFI!
int[] temp=new int[data.length]; 7l?=$q>k"
mergeSort(data,temp,0,data.length-1); E( TY%wO
} b`^$2RM&
+/ #J]v-
private void mergeSort(int[] data, int[] temp, int l, int r) { `p!.K9r7
int i, j, k; 4o%hH
int mid = (l + r) / 2; ^#G>P0mG%
if (l == r) (vY10W{
return; L9x,G!
if ((mid - l) >= THRESHOLD) Iv{}U\ u
mergeSort(data, temp, l, mid); a@%FwfIu
else CSs3l
insertSort(data, l, mid - l + 1); 2W}RXqV<
if ((r - mid) > THRESHOLD) }Iu 6]?|'
mergeSort(data, temp, mid + 1, r); }RD,JgmV
else 6:e0?R^aD"
insertSort(data, mid + 1, r - mid); NWKD:{
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for (i = l; i <= mid; i++) { 46mu,v
temp = data;
"dA"N$
} &oT]ycz%
for (j = 1; j <= r - mid; j++) { tvd/Y|bV=
temp[r - j + 1] = data[j + mid]; )&*&ZL0
} Jap
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int a = temp[l]; 0hPm,H*Y]
int b = temp[r]; .9`.\v6R
for (i = l, j = r, k = l; k <= r; k++) { 0py0zE6,,
if (a < b) { Sna7r~j
data[k] = temp[i++]; 2^|*M@3r
a = temp; j3$KYf`T}
} else { f1Rm9``
data[k] = temp[j--]; >:Rc%ILym
b = temp[j]; ]+J]}C]\d
} ?A]:`l_"
} HSTtDTo
} hGPjH=^EM
Jr#ptf"Wu
/** zg)]:
* @param data $PNR?
* @param l Wt_@ vs@.O
* @param i `TAhW
*/ eQMY3/#
private void insertSort(int[] data, int start, int len) { 6}[W%S]8
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); zV%U4P)Dao
} _m;Y'
} M*%iMz
} nL\BB&
} [^aow-4z
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堆排序: ,;UVQwY
Qp{{OjD
package org.rut.util.algorithm.support; '
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import org.rut.util.algorithm.SortUtil; "MlY G6
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/** >i=mw5`D]
* @author treeroot |',MgA
* @since 2006-2-2 yY8q{\G
* @version 1.0 ~Q5L)}8N
*/ ao Y"uT+
public class HeapSort implements SortUtil.Sort{ SeKU?\
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/* (non-Javadoc) $
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5r@x$* >e
*/ "(/.3`g
public void sort(int[] data) { )|3?7?X
MaxHeap h=new MaxHeap(); mL ]zkD_
h.init(data); ga VWfG
for(int i=0;i h.remove(); W,}C*8{+
System.arraycopy(h.queue,1,data,0,data.length); wQDKv'zU1
} 1)H+iN|im/
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private static class MaxHeap{ |R DPx6!V
W$
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void init(int[] data){ #\Lt0
this.queue=new int[data.length+1]; 2B5Z0<
for(int i=0;i queue[++size]=data; m%l\EE
fixUp(size); ,{7Z OzA
} tyNT1F{
} ~`(#sjr6KR
,SH))%Cyt
private int size=0; Wfz&:J#
e%SQ~n=H 9
private int[] queue; ,{=#
<