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。 q^)=F_QvG
插入排序: b{zAJ`|#[n
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package org.rut.util.algorithm.support; /rn"
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import org.rut.util.algorithm.SortUtil; MJy;GzJ O
/** F\zkyk4
* @author treeroot xq#U4E
* @since 2006-2-2 <'yf|N!9G
* @version 1.0 "[#@;{@Gt
*/ Cc@=?
public class InsertSort implements SortUtil.Sort{ ]d[Rf$>vu0
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/* (non-Javadoc) (s5<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >6*(}L9
*/ Y>xi|TWN
public void sort(int[] data) { <j{0!J@:
int temp; XulaPq
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); aytq4Ts
} X!HDj<
} I/oIcQS!k
} ~8XX3+]z:X
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} 14mXx}O
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冒泡排序: P'-JbPXU
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package org.rut.util.algorithm.support; ^fFtI?.6jI
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import org.rut.util.algorithm.SortUtil; A4~D#V
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/** |De!ti
* @author treeroot }pbBo2
* @since 2006-2-2 ^2C0oX
* @version 1.0 XRClBTKF
*/ x>U1t!'
public class BubbleSort implements SortUtil.Sort{ EC^Ev|PB\u
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/* (non-Javadoc) D?iy.Dg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b*btkaVue
*/ 2N
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public void sort(int[] data) { >{phyByI
int temp; 6T R8D\
for(int i=0;i for(int j=data.length-1;j>i;j--){ 83{x"G3>
if(data[j] SortUtil.swap(data,j,j-1); pe\Txg6
} IyrZez
} +io;K]C
}
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} V}vl2o
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} +^/Nil
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选择排序: ,maAw}=
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package org.rut.util.algorithm.support; uAW*5 `[
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import org.rut.util.algorithm.SortUtil; B, QC-Tn
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/** dH
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* @author treeroot tqff84
* @since 2006-2-2 `f\5p+!<7R
* @version 1.0 =XZF.ur
*/ J0IdFFZ|w
public class SelectionSort implements SortUtil.Sort { ;FV~q{
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/* Zp/qs
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* (non-Javadoc) t!J";l
* Uq9,(tV`6g
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wQF&GGYR
*/ <7vI h0
public void sort(int[] data) { ",MK'\E
int temp; r~S!<9f
for (int i = 0; i < data.length; i++) { }V1DyLg:
int lowIndex = i; >XD02A[
for (int j = data.length - 1; j > i; j--) { 3EbnZb
if (data[j] < data[lowIndex]) { [(D}%+2
lowIndex = j; *Gk<"pEeS
} 3Ew"[FUs
} a-z23$3
SortUtil.swap(data,i,lowIndex); UPfFT^=y
} sYAG,r>h
} bqZ?uvc3
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} yDCooX0
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Shell排序: C$N4
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package org.rut.util.algorithm.support; /7UovKKbz
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import org.rut.util.algorithm.SortUtil; ~)!V8
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/** #Qtg\X
* @author treeroot +Op%,,Db
* @since 2006-2-2 >)AE|j`
* @version 1.0 /tI d#/Y
*/ Ev$-PX
public class ShellSort implements SortUtil.Sort{ ;[WSf{k
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/* (non-Javadoc) 9E->;0-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <2o.,2?G
*/ g( @$uJ
public void sort(int[] data) { ^Ff~j&L@{
for(int i=data.length/2;i>2;i/=2){ !Zk%P
for(int j=0;j insertSort(data,j,i); f^[{k
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} bMK#^ZoH
} =\ti<
insertSort(data,0,1); ,p[\fT($]
} nJ'>#9~a'>
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/** `&|l;zsS
* @param data (/9.+V_
* @param j aIn)']
* @param i 4y]: Gqz~
*/ jza}-=&+e
private void insertSort(int[] data, int start, int inc) { }\`-G+i{W
int temp; Z3X&<Y5
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); /JK-}E
} /VhE<}OtH
} ;EE&~&*w
} wB1|r{
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} ^B&ahk
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快速排序: ReHd~G9
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package org.rut.util.algorithm.support; @MlU!oR&
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import org.rut.util.algorithm.SortUtil; "a0u-}/D
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/** V(''p{
* @author treeroot H/^TXqQ8
* @since 2006-2-2 lH,]ZA./
* @version 1.0 +AgkPMy
*/ !"Oj$c
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public class QuickSort implements SortUtil.Sort{ ^?K?\
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/* (non-Javadoc) ERX|cc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !5E%W[
*/ XW&8T"q7
public void sort(int[] data) { Q[ 9rA
quickSort(data,0,data.length-1); ,/w852|ub
} g'}`FvADi
private void quickSort(int[] data,int i,int j){ u]]5p[|S
int pivotIndex=(i+j)/2; [)J49
file://swap Vlp*'2VO
SortUtil.swap(data,pivotIndex,j); [MQJ71(3
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int k=partition(data,i-1,j,data[j]); cmr6,3_
SortUtil.swap(data,k,j); |4p<T!T
if((k-i)>1) quickSort(data,i,k-1); )/+eLRN5G
if((j-k)>1) quickSort(data,k+1,j); @KXz4PU
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} 3@Zz-~4Td
/** V'.eesN
* @param data bWC~Hv
* @param i 1EAVMJ
* @param j jy__Y=1}
* @return @E"+qPp.3
*/ ;@7#w
private int partition(int[] data, int l, int r,int pivot) { p^zEfLTU
do{ d_WnK{
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Wf`OyeRz
SortUtil.swap(data,l,r); #*>7X>,J
} @k:f}-t
while(l SortUtil.swap(data,l,r); wzQdKlV
return l; j$mt*z L
} .X<"pd*@e
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} .2{C29g
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改进后的快速排序: Lm*LJ_+ B
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package org.rut.util.algorithm.support; [Tb3z:UUvf
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import org.rut.util.algorithm.SortUtil; N5w]2xz!
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/** jKCqH$
* @author treeroot G|PIH#
* @since 2006-2-2 J,^pt Ql
* @version 1.0 K3r>nGLBo
*/ dn)tP6qc/
public class ImprovedQuickSort implements SortUtil.Sort { J\dhi{0
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private static int MAX_STACK_SIZE=4096; G$x["
private static int THRESHOLD=10; 4}_w4@(
/* (non-Javadoc) H'= i
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xU\:Vid+A
*/ 1O3<%T#LOZ
public void sort(int[] data) { c;|&>Fp
int[] stack=new int[MAX_STACK_SIZE]; pqQdr-aR=
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int top=-1; ]-s`#
int pivot; _9O }d
int pivotIndex,l,r; i2ml[;*,N
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stack[++top]=0; Jm J,~_
stack[++top]=data.length-1; B=Jd%Av
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while(top>0){ =<FZ{4
int j=stack[top--]; 3d)+44G_)
int i=stack[top--]; c"sw@<HG
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pivotIndex=(i+j)/2; .&yWHdQC:
pivot=data[pivotIndex]; (27F
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SortUtil.swap(data,pivotIndex,j); 85@6uBh
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file://partition knK=ENf;e
l=i-1; ;'18
r=j; 1\608~ZH
do{ vVN[bD<
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); "6NNId|Y
SortUtil.swap(data,l,r); M"$RtS|h
} ]MA)='~
while(l SortUtil.swap(data,l,r); bQN4ozSi
SortUtil.swap(data,l,j); by
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if((l-i)>THRESHOLD){ J0WXH/:
stack[++top]=i; A[$wxdc
stack[++top]=l-1; C^42=?
} /h.3<HI."*
if((j-l)>THRESHOLD){ VX>t!JP p
stack[++top]=l+1; NMY!-Kv 5
stack[++top]=j; &qI5*aQ8T
} o Jp_c
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} $XU$?_O
file://new InsertSort().sort(data); V_d%g<n4
insertSort(data); UCj#t!Mw
} Lp]C![\>U
/** (uK), *6B
* @param data BiLreZ~"
*/ FivaCNA
private void insertSort(int[] data) { uy-Ncy
int temp; !/(}meZj
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); TtjSLkF
} eWk2YP!
} zt?w n*_
} o-CJdOS
"N/K*
} 6=lQT
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归并排序: vAhO!5]>\
Gc!{%x
package org.rut.util.algorithm.support; L2O57rT2
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import org.rut.util.algorithm.SortUtil; rHdP4: n
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/** S"A_TH
* @author treeroot C`_D{r
* @since 2006-2-2 5F+ f '~
* @version 1.0 !<PTsk F
*/ Z6AU%3]
public class MergeSort implements SortUtil.Sort{ L8K 3&[l%
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/* (non-Javadoc) 9C~GL,uKs
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <:7e4#
*/ ;3}b&Z[N]
public void sort(int[] data) { d@4=XSj
int[] temp=new int[data.length]; Fl>j5[kLZ
mergeSort(data,temp,0,data.length-1); ,F9wc<V8
} p[VCt" j
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private void mergeSort(int[] data,int[] temp,int l,int r){ k+G4<qw
int mid=(l+r)/2; vlyNQ7"%
if(l==r) return ; CKt~#$ I%
mergeSort(data,temp,l,mid); *7V{yK$O|
mergeSort(data,temp,mid+1,r); {Om3fSk:
for(int i=l;i<=r;i++){ ^g){)rz|
temp=data; p;Ok.cXVp
} 0 S8{VZpy
int i1=l; ;RZa<2
int i2=mid+1; ^a 5~FI:
for(int cur=l;cur<=r;cur++){ 4GejT(U
if(i1==mid+1) 4i&!V9@:
data[cur]=temp[i2++]; pR7G/]U$A
else if(i2>r) ct/THq
data[cur]=temp[i1++]; Z$K%@q,10+
else if(temp[i1] data[cur]=temp[i1++]; "Ksd9,J\b
else !m5\w>
data[cur]=temp[i2++]; Cu<ojN- $
} .z7f_KX^
} pnb$lpxt
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} sh3}0u+
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改进后的归并排序: BU\NBvX$
cJ{P,K
package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; r~a}B.pj
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/** T js{
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* @author treeroot *hgsS~
* @since 2006-2-2 g+{MvSj$
* @version 1.0 ?UIb!k>
*/ NPq2C8:
public class ImprovedMergeSort implements SortUtil.Sort { oYm"NDS_.
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private static final int THRESHOLD = 10; iU|C<A%Hh
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/* L7="! I
* (non-Javadoc) 3CL:VwoW
* !}m8]&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fP*C*4#X
*/ KDzIarC
public void sort(int[] data) { 7cSvAX0Z.
int[] temp=new int[data.length]; 0drc^rj
!
mergeSort(data,temp,0,data.length-1); >CA1Ub&ls
} 9{&x-ugM
8[XNFFUZs
private void mergeSort(int[] data, int[] temp, int l, int r) { z`6KX93
int i, j, k; "K]4j]yU
int mid = (l + r) / 2; @}}1xP4Sr
if (l == r) ^U1+D^AJ
return; yrb%g~ELGn
if ((mid - l) >= THRESHOLD) I*t}gvUt9
mergeSort(data, temp, l, mid); _J`M>W)8
else !2,.C+,
insertSort(data, l, mid - l + 1); 3c"{Wu-}
if ((r - mid) > THRESHOLD) v8=MO:>{R
mergeSort(data, temp, mid + 1, r); E$baQU hKS
else uu #+|ZD
insertSort(data, mid + 1, r - mid); o
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for (i = l; i <= mid; i++) { *V+fRN4 W
temp = data; '/@VG_9L]
} |1$X`|S
for (j = 1; j <= r - mid; j++) { BW1O1zIh\
temp[r - j + 1] = data[j + mid]; v7RDoO]I
} TR;-xst@
int a = temp[l]; <]J5AdJ
int b = temp[r]; Xp@OIn
for (i = l, j = r, k = l; k <= r; k++) { .-
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if (a < b) { p_5+L@%Gb
data[k] = temp[i++]; ={d\zjI$
a = temp; .4-S|]/d,
} else { 4cL=f
data[k] = temp[j--]; JaTW/~ TU
b = temp[j]; !h;VdCCi#
} `8*$$JC
} ^^mi@&ApLD
} _TiF}b!hi
ZH*?~ #
/** 6&cU*Io@
* @param data \^D`Hvg
* @param l AUd}) UR
* @param i =^{+h>#s@
*/ ZGBcy}U(k
private void insertSort(int[] data, int start, int len) { r>OE[C69
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 9)`wd&!
} _;+&'=6.[
} :I8t}Wg
} 1,,: 4*)
} ~M=`f{-$K
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堆排序: Si(?+bda0c
Obm\h*$
package org.rut.util.algorithm.support; :>u{BG;=79
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import org.rut.util.algorithm.SortUtil; 0Oq1ay^
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/** e78}
* @author treeroot 6I<`N
* @since 2006-2-2 ^ +G> N
* @version 1.0 ud1E@4;qf
*/ ?6gI8K6X
public class HeapSort implements SortUtil.Sort{ QS_xOQ '
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/* (non-Javadoc) : nn'>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xMu6PM<l
*/ -`JY] H
public void sort(int[] data) { N_U
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MaxHeap h=new MaxHeap(); 7(-<x@ e
h.init(data); K> U&jH
for(int i=0;i h.remove(); (G
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System.arraycopy(h.queue,1,data,0,data.length); 1{qg@xlj
} Y2fs$emv
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private static class MaxHeap{ "=)`*"rr
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void init(int[] data){ qIl@,8T
this.queue=new int[data.length+1]; n$8A"'.M
for(int i=0;i queue[++size]=data; ] N8V?.|:
fixUp(size); >ZT3gp?E
} uFgw eOJ
} %$Uw]a
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private int size=0; F~6[DqF\|
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private int[] queue; 78kk"9h'
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public int get() { C.|MA(7
return queue[1]; YZd4% zF
} x1Uj4*Au
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