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。 8})|^%@n
插入排序: i'iO H|s
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package org.rut.util.algorithm.support; Y{j7Q4{
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import org.rut.util.algorithm.SortUtil; pU@YiwP"]x
/** Iu%^*K%
* @author treeroot W1`Dx(g
* @since 2006-2-2 l.uN$B
* @version 1.0 5Kee2s?*
*/ AHWh}~Yi
public class InsertSort implements SortUtil.Sort{ I}_;A<U
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/* (non-Javadoc) OOfyGvs
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Nuo^+z
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*/ T?#s'd
public void sort(int[] data) { e`;t<7*i
int temp; zF?31\GOX
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9u?Eb~#$
} V07VwVD
} re/xs~
} dB@FI
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} 'H!V54
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冒泡排序: a^(2q{*
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package org.rut.util.algorithm.support; ovB=Zm
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import org.rut.util.algorithm.SortUtil; hcQSB00D^
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/** =pyVn_dg
* @author treeroot !ZX&r{pJp
* @since 2006-2-2 qg|Ox*_od"
* @version 1.0 Jb7iBQ2%
*/ ed=n``P~}
public class BubbleSort implements SortUtil.Sort{ @`5QG2
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/* (non-Javadoc) q ?(A!1(u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (x}A_i
*/ z1kBNOr
public void sort(int[] data) { Gl.?U;4Z
int temp; 'y< t/qo
for(int i=0;i for(int j=data.length-1;j>i;j--){ 4{Q$!O>
if(data[j] SortUtil.swap(data,j,j-1); JaA&eT|
} F|6
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} .#"1bRWpZ
} ,tau9>!
} *3!(*F@M,
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} 9z+vFk`
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选择排序: [+y&HNf
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package org.rut.util.algorithm.support; zMbfV%b
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import org.rut.util.algorithm.SortUtil; 2XzF k_6H
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/** _MGNKA6JI
* @author treeroot W&HF?w}s
* @since 2006-2-2 bh{E&1sLh
* @version 1.0 lB=(8.
*/ TViBCed40
public class SelectionSort implements SortUtil.Sort { lQ+Ru8I
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/* ,NjX&A@
* (non-Javadoc) rH[5~U
* :8](&B68gE
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~o:rM/!Ba
*/ I).=v{@9V<
public void sort(int[] data) { -b@v0%Q2M*
int temp; z`c%?_EK
for (int i = 0; i < data.length; i++) { _TtX`b_Z
int lowIndex = i; 2O?Vr"
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for (int j = data.length - 1; j > i; j--) { B0 6s6Q
if (data[j] < data[lowIndex]) { gmXy>{T
lowIndex = j; TFAYVK~
} 5T~3$kuO
} 3yeK@>C
SortUtil.swap(data,i,lowIndex); n/ui<&(
} >`<Ued
} 3"^a
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} ='7er.~\
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Shell排序: <FCj)CP%
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package org.rut.util.algorithm.support; WAtg
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import org.rut.util.algorithm.SortUtil; kqj;l\N
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/** C!oS=qK?]
* @author treeroot 9zXu6<|qrL
* @since 2006-2-2 D+bB G
* @version 1.0 b=6MFPbg
*/ vpZu.#5c
public class ShellSort implements SortUtil.Sort{ &p/S>qKu#
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/* (non-Javadoc) >t1_5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OpW eW
*/ jA20c(O
public void sort(int[] data) { eXj\DjttG}
for(int i=data.length/2;i>2;i/=2){ Dj-\))L
for(int j=0;j insertSort(data,j,i); vGx?m@
} t/l! KdY$
} 4yA9Ni
insertSort(data,0,1); +)/Rql(lY
} -@EBbM&
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/** 4+ASwN9
* @param data :z0s*,QH
* @param j vjexx_fq
* @param i Z!C`f/h9
*/ tc+GR?-7W
private void insertSort(int[] data, int start, int inc) { k #1`
int temp; MgJ%26TZ
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); .){e7U6b{
} P!`Q_h6a
} p)?qJ2c|
} QU-7Ch#8
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} 9;E%U2T7
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快速排序: no~O R Q
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package org.rut.util.algorithm.support; AijPN
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import org.rut.util.algorithm.SortUtil; uR06&SaA>
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/** Ze$^UR
* @author treeroot "_ PH "W
* @since 2006-2-2 OPvj{Dv$0
* @version 1.0 ]p4`7@@)*
*/ VfL]O 8P>
public class QuickSort implements SortUtil.Sort{ )0Y #-=.<
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/* (non-Javadoc) ,XWay%8{E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/
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public void sort(int[] data) { ifJv~asp
quickSort(data,0,data.length-1); <r_P?
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}
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private void quickSort(int[] data,int i,int j){ )1ZJ
int pivotIndex=(i+j)/2; E"9/YWv
file://swap )#b}qc#`
SortUtil.swap(data,pivotIndex,j); IEno.i\
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int k=partition(data,i-1,j,data[j]); }$&T
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SortUtil.swap(data,k,j); xWenKY,
if((k-i)>1) quickSort(data,i,k-1); ()JYN5
if((j-k)>1) quickSort(data,k+1,j); 9}%~w(P
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} _g^K$+F'}
/** E>l#0Zw
* @param data N[+o[%A
* @param i ~,1-$#R
* @param j i#@ v_^ q
* @return K^]?@oHO
*/ uJ|5Ve
private int partition(int[] data, int l, int r,int pivot) { 75hFyh;u
do{ W G3mQ\k
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); xoz*UA.
SortUtil.swap(data,l,r); E5Snl#Gl\0
} 9:CVN@E
while(l SortUtil.swap(data,l,r); k2_6<v
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return l; h|c:!VN@
} ~L\( /[
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} evndw>
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改进后的快速排序: bbQ10H
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package org.rut.util.algorithm.support; 2kp|zX(
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import org.rut.util.algorithm.SortUtil; =XRgT1>e
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/** )'K!)?&d
* @author treeroot =CG!"&T
* @since 2006-2-2 HAI1%F236
* @version 1.0 fr,CH{Uq
*/ 9|G=KN)P:
public class ImprovedQuickSort implements SortUtil.Sort { <@x+N%C
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private static int MAX_STACK_SIZE=4096; #/XK&(X
private static int THRESHOLD=10;
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/* (non-Javadoc) ]mD=Br*r~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QX.F1T2e?
*/ qN`]*baS
public void sort(int[] data) { yN WbI0a
int[] stack=new int[MAX_STACK_SIZE]; 0o"<^]
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int top=-1; 93Ci$#<y
int pivot; o{-USUGj7
int pivotIndex,l,r; e~2*>5\:
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stack[++top]=0; -fSKJo#}|
stack[++top]=data.length-1; 0| DG\&?
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while(top>0){ k+m_L{#m5
int j=stack[top--]; ,rl
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int i=stack[top--]; 0R%uVJG
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pivotIndex=(i+j)/2; 8w@W8(3B
pivot=data[pivotIndex]; \'^Z_6{w
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SortUtil.swap(data,pivotIndex,j); HU'`kimWb
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file://partition B|q3;P
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r=j; W%jX-
do{ KxTYc
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); #V9hG9%8
SortUtil.swap(data,l,r); 9jzLXym
} t+)GB=C
while(l SortUtil.swap(data,l,r); &40JN}
SortUtil.swap(data,l,j); +KwF
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if((l-i)>THRESHOLD){ XY t8vJ
stack[++top]=i; ;Q,).@<C
stack[++top]=l-1; j
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} g7Q*KA+
if((j-l)>THRESHOLD){ X9`C2fyVd
stack[++top]=l+1; vM3|Ti>a'
stack[++top]=j; FLnAN;
} uA}FuOE6
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} +MoxvW6
file://new InsertSort().sort(data); ^5@"|m1
insertSort(data); 0@/E%T1c"
} bg3jo1J
/** ;51!aC
* @param data ^fiRRFr[
*/ 0v)mgrl=,
private void insertSort(int[] data) { ghO//?m
int temp; C%7)sLWjJS
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0}C}\1
} Y&Vbf>Hi+
} T^H ) lC#R
} GDQg:MgX
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} <.B> LU
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归并排序: kX .1#%Ex
J3S byI!T
package org.rut.util.algorithm.support; )PNH| h
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import org.rut.util.algorithm.SortUtil; nk,Mo5iqV
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/** R/FV'qy]
* @author treeroot *8eh%3_$h
* @since 2006-2-2 LK}eU,m=
* @version 1.0 &MLhCekY
*/ (S 3kP5:F
public class MergeSort implements SortUtil.Sort{ GIl{wd
@ y2Bq['
/* (non-Javadoc) T
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;j\$[4W.i
*/ mNB ]e5;N
public void sort(int[] data) { Y$5v3E\uc
int[] temp=new int[data.length]; sWzXl~JbF
mergeSort(data,temp,0,data.length-1); UHszOl
} }nERQq&A
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private void mergeSort(int[] data,int[] temp,int l,int r){ aL6 5t\2
int mid=(l+r)/2; s"!}=kX
if(l==r) return ; <.XoC?j
mergeSort(data,temp,l,mid); }j@@
mergeSort(data,temp,mid+1,r); `,=p\g|D
for(int i=l;i<=r;i++){ u<r('IW0
temp=data; j0NPd^
} GB Un" _J
int i1=l; 5]ob;tAm
int i2=mid+1; !Bbwl-e`
for(int cur=l;cur<=r;cur++){ #yxYL0CcA:
if(i1==mid+1) 62E(=l
data[cur]=temp[i2++]; S$:S*6M@"
else if(i2>r) a m%{M7":7
data[cur]=temp[i1++]; j`hbQp\`
else if(temp[i1] data[cur]=temp[i1++]; [NDYJ'VGe
else P?ol]MwaB
data[cur]=temp[i2++]; \K=PIcH
} m5g: Q
} `G{t<7[[;
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} ZWW}r~d{
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改进后的归并排序: 1S@k=EKM
e.h:9`"*
package org.rut.util.algorithm.support; ;!Bkk9r"H
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import org.rut.util.algorithm.SortUtil; j0M;2 3@[
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/** 6-}9m7# Y
* @author treeroot Z)~4)71Y:
* @since 2006-2-2 Ds/zl Z
* @version 1.0 _CT|5wQF<
*/ NE nP3A
public class ImprovedMergeSort implements SortUtil.Sort { yU`IyaazZ
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private static final int THRESHOLD = 10; N|d@B{a(
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/* 94/}@<d-=
* (non-Javadoc) GQ8P}McA
* ,^T2hY`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SS-
*/ yV`vu/3K
public void sort(int[] data) { 4 .qjTR
int[] temp=new int[data.length]; _en 8hi@Z
mergeSort(data,temp,0,data.length-1); 9`b3=&i\
} nQC[[G*x
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private void mergeSort(int[] data, int[] temp, int l, int r) { yK;I<8+>_
int i, j, k; 0U~JSmj:2K
int mid = (l + r) / 2; z""(M4
if (l == r) }zi6 F.
return; PVQ%y
if ((mid - l) >= THRESHOLD) % *hBrjbj
mergeSort(data, temp, l, mid); S([De"y
else To95WG7G
insertSort(data, l, mid - l + 1); re2%e-F"
if ((r - mid) > THRESHOLD) =X):Zi
mergeSort(data, temp, mid + 1, r); oKiu6=
else >~:]+q
insertSort(data, mid + 1, r - mid); OYkd?LN
sy?W\(x
for (i = l; i <= mid; i++) { hCrgN?Mz
temp = data; 7tQiKrhp
} "~6BC
for (j = 1; j <= r - mid; j++) { 7;V5hul
temp[r - j + 1] = data[j + mid]; OduTg^R
} J/ ~]A1fP6
int a = temp[l]; Z9y:}:j"
int b = temp[r]; ubw ]}sfM#
for (i = l, j = r, k = l; k <= r; k++) { hB4.tMgZ
if (a < b) { :A[/;|&
data[k] = temp[i++]; Gy5W;,$q
a = temp; ){Y2TWW&0
} else { c4|.!AQ>
data[k] = temp[j--]; E7,\s
b = temp[j]; Phczf
} go@}r<