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。 *TgD{>s
插入排序: (3? W)i
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package org.rut.util.algorithm.support; [tk6Kx8a
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import org.rut.util.algorithm.SortUtil; )?{jD
/** =`ECM7
* @author treeroot E1D0un
* @since 2006-2-2 PJL
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* @version 1.0 ?UV|m
*/ JqV}>"WMV
public class InsertSort implements SortUtil.Sort{ >0JCu^9
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/* (non-Javadoc) 1G8,Eah
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^#!\VGnL
*/ %.WW-S3
public void sort(int[] data) { BB imP
int temp; C@Wd Pjxj
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }=d}q *
} gu"@*,hL
} Mq='|0,
} ^B!()39R?
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冒泡排序:
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package org.rut.util.algorithm.support; +~"(Wooi
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import org.rut.util.algorithm.SortUtil; tL M@o|:
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/** [Z^26/5a
* @author treeroot t +|t/1s2
* @since 2006-2-2 iB5q"hoZC
* @version 1.0 i>KgkRZL#
*/ ]&s@5<S[
public class BubbleSort implements SortUtil.Sort{ 5w%[|%KG:L
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/* (non-Javadoc) V\AY =u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }tL]EW^
*/ $Gcjm~
public void sort(int[] data) { KA>QW[HX
int temp; CwD=nT5`
for(int i=0;i for(int j=data.length-1;j>i;j--){ `FwE^_9d
if(data[j] SortUtil.swap(data,j,j-1); t'Zv)Wu1E
} vl~HV8MAv
} "wCx]{Di
} Y`3\Z6KlV
} y&/bp<Z
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} <fE^S
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选择排序: _9dW+
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package org.rut.util.algorithm.support; nzZs2
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import org.rut.util.algorithm.SortUtil; putRc??o;
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/** _SkiO}c8
* @author treeroot uzT+,
* @since 2006-2-2 N 'n0I^Y1A
* @version 1.0 lI~8[[$xd
*/ o'Fyo4Qd
public class SelectionSort implements SortUtil.Sort { Vl3-cW@p
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/* @6Lp$w
* (non-Javadoc) W)'*Dcd
* xm5?C>vu(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +d?|R5{3
*/ KyQTrl.qdl
public void sort(int[] data) { +Jm vB6s
int temp; JTObyAoW
for (int i = 0; i < data.length; i++) { ex^9 l b
int lowIndex = i; ~0[(-4MA
for (int j = data.length - 1; j > i; j--) { 0$0
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if (data[j] < data[lowIndex]) { p+5J
lowIndex = j; s}-j.jzB{
} fP6\Ur
} )a5ON8?
SortUtil.swap(data,i,lowIndex); \RtFF
} 'nq~1 >i
} 9_4(}|"N|
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} sSc~q+xz
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Shell排序: Mlr'h}:H
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package org.rut.util.algorithm.support; Z"qJil}
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import org.rut.util.algorithm.SortUtil; X|/RV4x@Cq
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/** rA^=;?7Q
* @author treeroot ZJ~0o2xZ'
* @since 2006-2-2 9HPmJ`b
* @version 1.0 =v'Aub
*/ Rkp
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public class ShellSort implements SortUtil.Sort{ p Q!lY
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/* (non-Javadoc) =HJ7tele
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jl]3B
*/ c5uC?b].
public void sort(int[] data) { 6k![v@2R
for(int i=data.length/2;i>2;i/=2){ xB[W8gQ6fa
for(int j=0;j insertSort(data,j,i); GmE`YW
} H "5,To
} o3eaNYa
insertSort(data,0,1); )MLbE-@
} FCOa|IKsN
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/** .o5K X*
* @param data VbMud]40F
* @param j P-$ ,
* @param i SS24@:"{
*/ Slj
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private void insertSort(int[] data, int start, int inc) { KATf9-Sz
int temp; c~ vql4
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ==gL!e{
} 10.ZBfn
} rNKeY48\
} _~{J."q
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}
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快速排序: Q`6hJgyL
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package org.rut.util.algorithm.support; l_$>$d
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import org.rut.util.algorithm.SortUtil; zUDXkG*Lv
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/** UZmUYSu;
* @author treeroot ->o[ S0
* @since 2006-2-2 r$-P
* @version 1.0 JiO8EIM
*/ `s Im&.d
public class QuickSort implements SortUtil.Sort{ n/ :#:
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/* (non-Javadoc) zDEgC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dZ8ldpf8
*/ Cg%Owe/E?0
public void sort(int[] data) { [` }w7
quickSort(data,0,data.length-1); nk_X_y
} 3Nwix_&S
private void quickSort(int[] data,int i,int j){ 9o6[4Q}
int pivotIndex=(i+j)/2; {dP6fr1z
file://swap SK&1l`3
SortUtil.swap(data,pivotIndex,j); iPY)Ew`Im
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int k=partition(data,i-1,j,data[j]); | oM`
SortUtil.swap(data,k,j); =./PY10'
if((k-i)>1) quickSort(data,i,k-1); u|.|dv'mbp
if((j-k)>1) quickSort(data,k+1,j); pDJN}XtjT
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} $cuBd
/** R
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* @param data KF@%tR}V{
* @param i #`=>Mza
* @param j 6/Yo0D>M$
* @return 4+nZ4a>LH?
*/ |+JO]J#bc
private int partition(int[] data, int l, int r,int pivot) { )c1Pj#|
do{ py':36'
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 6vxRam6[??
SortUtil.swap(data,l,r); WlY\R>x#
} n9 FA`e
while(l SortUtil.swap(data,l,r); 7\$ b%A
return l; c yP+a
} xhCQRw
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}
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改进后的快速排序: e]ST0J"
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package org.rut.util.algorithm.support; vN@04a\h
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import org.rut.util.algorithm.SortUtil; {R[ V
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/** =h=-&DSA
* @author treeroot `1Md1e:J
* @since 2006-2-2 sh0x<_
* @version 1.0 Q%!xw(
*/ 7<(U`9W/q
public class ImprovedQuickSort implements SortUtil.Sort { hH-!3S2'
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private static int MAX_STACK_SIZE=4096; "R-j
private static int THRESHOLD=10; oRcP4k;d=
/* (non-Javadoc) 4T"L#o1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r8N)]HsZH
*/ D'{o3Q,%K
public void sort(int[] data) { nygeR|:\
int[] stack=new int[MAX_STACK_SIZE]; vl}}h%BC
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int top=-1; Xs"d+dc
int pivot; tQyQ+1
int pivotIndex,l,r; WLh!L='{BK
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stack[++top]=0;
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stack[++top]=data.length-1; |a /cw"
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while(top>0){ +!`$(
int j=stack[top--]; Ln+ k_
int i=stack[top--]; *!Gb_!98
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pivotIndex=(i+j)/2; A,4}
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pivot=data[pivotIndex]; =z<sx2#*
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SortUtil.swap(data,pivotIndex,j); v$q\3#5|'
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file://partition s2 aFme
l=i-1; 1GLb^:~A
r=j; 0|0IIgy
do{ kf~>%tES]
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 9!2$?xqym
SortUtil.swap(data,l,r); jE5=e</
} nSZp,?^
while(l SortUtil.swap(data,l,r); Kuk@x.~0m
SortUtil.swap(data,l,j); yTe25l{QaF
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if((l-i)>THRESHOLD){ =M4wP3V/
stack[++top]=i; K&dc< 4DC
stack[++top]=l-1; u8<Fk
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} uV'C_H
if((j-l)>THRESHOLD){ **6X9ZIX[
stack[++top]=l+1; :,/
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stack[++top]=j; XC390t
} y|9 LtQ
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} JE$$6X
file://new InsertSort().sort(data); Spo[JQ%6
insertSort(data); HC>k/Gk"
} 4`r-*Lx
/** NX]6RZr-
* @param data cj[%.M5iBA
*/ b+CvA(*
private void insertSort(int[] data) { OQyZ'
int temp; aKRnj!4z
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3zM>2)T-
} O7,:-5h0
} q'biTn]2
} SQuW`EHBgs
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} f-}_
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归并排序: .
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package org.rut.util.algorithm.support; k.H4Mf(4
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import org.rut.util.algorithm.SortUtil; ~@D!E/hZx
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/** "+4r4
* @author treeroot w/CD-
* @since 2006-2-2 g8Zf("
* @version 1.0 h&bs`
*/ 7bkh")^
public class MergeSort implements SortUtil.Sort{ t@`Sa<
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/* (non-Javadoc) 6wyhL-{:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @#5?tk0
*/ 3HX-lg`0
public void sort(int[] data) { Vvl8P|x.<
int[] temp=new int[data.length]; FzFP 0
mergeSort(data,temp,0,data.length-1); @'?7au ''
} #w)D ml
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private void mergeSort(int[] data,int[] temp,int l,int r){ BOW`{=
int mid=(l+r)/2; 5U JMiwP{
if(l==r) return ; ew8Manx
mergeSort(data,temp,l,mid); x[YW 3nF
mergeSort(data,temp,mid+1,r); Dt+uf5o(
for(int i=l;i<=r;i++){ 1f5;^T
I
temp=data; \MmKz^tO
} x*F_XE1#M
int i1=l; xgB-m[Xi
int i2=mid+1; DYL \=ya1
for(int cur=l;cur<=r;cur++){ A)o%\j
if(i1==mid+1) xo(3<1mD
data[cur]=temp[i2++]; Ns`:=
else if(i2>r) e&XJK*Wf
data[cur]=temp[i1++]; JuXuS
else if(temp[i1] data[cur]=temp[i1++]; k|_LF[* Z
else n'Z5rXg
data[cur]=temp[i2++]; I~U;M+n*y
} VxGR[kq$]
} 5!^?H"#c
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} Zk
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改进后的归并排序: ndB*^nT
5B+I\f&
package org.rut.util.algorithm.support; i@spd5.
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import org.rut.util.algorithm.SortUtil; ao)8ie
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/** HpTX6}^
* @author treeroot nM&UdKf3
* @since 2006-2-2 %(n^reuP
* @version 1.0 8AVG pL
*/ m^ [VM&%
public class ImprovedMergeSort implements SortUtil.Sort { u}IQ)Ma
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private static final int THRESHOLD = 10; !mRDzr7
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/* %W]"JwRu
* (non-Javadoc) >qjV(_?F-
* ` z!?!"=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _i+7O^=d6X
*/ qx\P(dOUf
public void sort(int[] data) { ;tu2}1#r
int[] temp=new int[data.length]; ?>o|H-R~5Z
mergeSort(data,temp,0,data.length-1); tR% &.,2
} i$W=5B>SO
>4eZ%</D5
private void mergeSort(int[] data, int[] temp, int l, int r) { H?<ceK'e
int i, j, k; {oc7Chv=/H
int mid = (l + r) / 2; 23=SXA!
if (l == r) ZpQ8KY$5
return; 04cNi~@m
if ((mid - l) >= THRESHOLD) r:uW(<EP^
mergeSort(data, temp, l, mid); Di8;Tq
else \mp5G&+/Q
insertSort(data, l, mid - l + 1); [xsiSt?6
if ((r - mid) > THRESHOLD) eMV@er|
mergeSort(data, temp, mid + 1, r); 8|iMD1
else \H5{[ZUn
insertSort(data, mid + 1, r - mid); p?zh4:\F+
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for (i = l; i <= mid; i++) { uA2-&smw
temp = data; f$^+;j
} [?Ub =sp
for (j = 1; j <= r - mid; j++) { j>t*k!db
temp[r - j + 1] = data[j + mid]; n32.W?9
} esVZ2_eL
int a = temp[l]; 3teanU`
int b = temp[r]; !u=,b fyH
for (i = l, j = r, k = l; k <= r; k++) { N`%f+eT(
if (a < b) { ]w[T_4l
data[k] = temp[i++]; [e+$jsPl
a = temp; Pb-Ft=
} else { v<U +&D{
data[k] = temp[j--]; Jf=$h20x
b = temp[j]; CuD ^@
} SQd`xbIuL
} HfgK0wIi
} Tx'ctd#Y
Z6vm!#\
/** @|GKNW#
* @param data d~b#dcv$"
* @param l vAMr&[
* @param i jL[
hB
*/ J6Q}a7I#
private void insertSort(int[] data, int start, int len) { T{%'"mm;
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); d(-$ {
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} |6.1uRF E2
} :'LG%E:b
} E@F:U*A6%
} xz$S5tgDQK
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堆排序: I^z$0
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package org.rut.util.algorithm.support; 0fTEb%z8
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import org.rut.util.algorithm.SortUtil; X519}
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/** g6. =(je
* @author treeroot \!tS|h
* @since 2006-2-2 Lx"a #rZ
* @version 1.0 $ (gR^L
*/ @GiR~bKZ
public class HeapSort implements SortUtil.Sort{ D<