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。 eBSn1n
插入排序: r$3~bS$]
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package org.rut.util.algorithm.support; fr,CH{Uq
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import org.rut.util.algorithm.SortUtil; <750-d!
/** |j5AU
* @author treeroot T_oW)G
* @since 2006-2-2 654jS!
* @version 1.0 ;K)?:
*/ I).^,%>Z)
public class InsertSort implements SortUtil.Sort{ wEo-a< (
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/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d9[6kQ]
*/ 0()9vTY+
public void sort(int[] data) { Ro3I/NI>
int temp; HhQPgjZ/
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); x
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} Op$J"R
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} [hv3o0".
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冒泡排序: ZZFI\o
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package org.rut.util.algorithm.support; cVP49r}}v
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import org.rut.util.algorithm.SortUtil; *2m&?,nJ
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/** %.6?\w1e
* @author treeroot /xrq'|r?C
* @since 2006-2-2 /J9T=N
* @version 1.0 "` ?Wu
*/ rfZj8R&
public class BubbleSort implements SortUtil.Sort{ RQK**
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/* (non-Javadoc) bcx{_&1p
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <1'X)n&Kw$
*/ h}B# 'e
public void sort(int[] data) { Kj<<&_B.H
int temp; n'ca*E(
for(int i=0;i for(int j=data.length-1;j>i;j--){ ->"h5h
if(data[j] SortUtil.swap(data,j,j-1); gU 2c--`
} d8 BK/b
} f@.Q%+!4
} 6'sFmC
} x_H7=\pX]
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} rbJ)RN^.
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选择排序: yg[Oy#^
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package org.rut.util.algorithm.support; 9jzLXym
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import org.rut.util.algorithm.SortUtil; o j4)7{
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/** Q]?J%P.
* @author treeroot U-]PWt?C{
* @since 2006-2-2 %},S#5L3
* @version 1.0 PK`(qK9
*/ Xde=}9
public class SelectionSort implements SortUtil.Sort { r;6YCI=z
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/* j
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* (non-Javadoc) gZ=9Y:$
* C2,cyhr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0Eg r
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*/ \3:{LOr%*
public void sort(int[] data) { ;0X|*w1JO
int temp; `zsk*W1GA
for (int i = 0; i < data.length; i++) { \3Ald.EqtM
int lowIndex = i; @XG`D>%k
for (int j = data.length - 1; j > i; j--) { +sbacMfq
if (data[j] < data[lowIndex]) { [;LPeO
lowIndex = j; \ g[f4xAV
} A[,"jh
} ZT-45_
SortUtil.swap(data,i,lowIndex); uu/7Ie
} 0@/E%T1c"
} m&z%kVsg]
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} :)V0zHo&(
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Shell排序: ~i&< !O&
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package org.rut.util.algorithm.support; {8p?we3l1
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import org.rut.util.algorithm.SortUtil; Qs[EA_
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/** X1z0'gvh
* @author treeroot 4y}a,
* @since 2006-2-2 Y&Vbf>Hi+
* @version 1.0 mE@o27
*/ /g-X=|?F
public class ShellSort implements SortUtil.Sort{ GDQg:MgX
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/* (non-Javadoc) sL`D}_:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6o23#JgN
*/ LYT<o FE-
public void sort(int[] data) { xcRrI|?eC
for(int i=data.length/2;i>2;i/=2){ 5OqsnL_V
for(int j=0;j insertSort(data,j,i); tZBE& :l
} UHl/AM>!
} t:@A)ip
insertSort(data,0,1); >33b@)
} LUVJ218p
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/** pC.P
* @param data `e;Sjf<
* @param j ZTz(NS
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* @param i x3F L/^S
*/ #K*q(ei,7h
private void insertSort(int[] data, int start, int inc) { ]x{ H
int temp; _^sSI<&m
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ^
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} !Kqj&y5
} -ddatc|
} x=|@AFI
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} w)SxwlW}
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快速排序: tJfN6
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package org.rut.util.algorithm.support; \bmboNe
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import org.rut.util.algorithm.SortUtil; 2Sd6b 2-
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/** {YLJKu!M
* @author treeroot _IGa8=~
* @since 2006-2-2 ]`U?<9~Ob
* @version 1.0 BqA wo
*/ R,Uy3N
public class QuickSort implements SortUtil.Sort{ 7#*CWh1BNO
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/* (non-Javadoc) I,Y^_(JW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z9c=e46O
*/ *"L:"i`*$
public void sort(int[] data) { F9%VyQf
quickSort(data,0,data.length-1); g[)hm`{?
} 5W'|qmJ
private void quickSort(int[] data,int i,int j){ WZ-{K"56
int pivotIndex=(i+j)/2; Ybiz]1d
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SortUtil.swap(data,pivotIndex,j); %cjav
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int k=partition(data,i-1,j,data[j]); D\~$6#B>>
SortUtil.swap(data,k,j); o6%f%:&
if((k-i)>1) quickSort(data,i,k-1); ZlXs7
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if((j-k)>1) quickSort(data,k+1,j); {%}6d~Bg
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} wWswuhq<
/** O@&I.d$
* @param data KAEpFobYo
* @param i U .jMK{
* @param j I4ct``Di
* @return "2j~3aWj
*/ @D{[Hj`<
private int partition(int[] data, int l, int r,int pivot) { !-Q!/?
do{ {D.0_=y~2
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 45JLx?rN_
SortUtil.swap(data,l,r); +@v} (
} 2xm?,p`
while(l SortUtil.swap(data,l,r); Y0'^S<ox
return l; #Jb$AA!z
} : |(B[
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改进后的快速排序: ho<#i(
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package org.rut.util.algorithm.support; !9Xex?et
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import org.rut.util.algorithm.SortUtil; Qp Vm
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/** 1 .k}gl0<
* @author treeroot ~kFRy {z
* @since 2006-2-2 GoXHVUyp
* @version 1.0 Z)~4)71Y:
*/ D]_\i[x
public class ImprovedQuickSort implements SortUtil.Sort { {(Z1JoSl
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private static int MAX_STACK_SIZE=4096; @35]IxD
private static int THRESHOLD=10; qA[}\8}h
/* (non-Javadoc) `buTP?]4.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aa!c>"g6
*/ N.rB-
public void sort(int[] data) { Jc6 D ^=
int[] stack=new int[MAX_STACK_SIZE]; Etk<`GRfA
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int top=-1; w|#79,&
int pivot; 9 f+7vCA
int pivotIndex,l,r; S)h1e%f,
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stack[++top]=0; =^}2 /vA
stack[++top]=data.length-1; u^9,u/gj
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while(top>0){ fTcRqov
int j=stack[top--]; @UBp;pb}=h
int i=stack[top--]; ]sE^=;Pv?
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pivotIndex=(i+j)/2; M?97F!\U
pivot=data[pivotIndex]; 8i"fhN3?Y
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SortUtil.swap(data,pivotIndex,j); 2|EoP-K7
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file://partition I}{eYXh
l=i-1; i[lH@fJm_
r=j; B5S1F4
do{ ],m-,K
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); eSf:[^
SortUtil.swap(data,l,r); {^iV<>J
} )/w2]d/9
while(l SortUtil.swap(data,l,r); dY^~^<{Lj
SortUtil.swap(data,l,j); MDt4KD+bZ
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if((l-i)>THRESHOLD){ lnUy?0(
stack[++top]=i; ==9Ez
stack[++top]=l-1; Pd?YS!+S
} H(| v
if((j-l)>THRESHOLD){ #{a <{HX
stack[++top]=l+1; (C|%@6 1S
stack[++top]=j; zyE yZc?
} v%w]Q B
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} .l!Z=n|
file://new InsertSort().sort(data); ^
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insertSort(data); MvA_tRO
} CJ >=odK[
/** O jmz/W
* @param data G})mw
*/ XafyI*pOX
private void insertSort(int[] data) { E&AR=yqk
int temp; w.jATMJ)F
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 'AU!xG6OQ
} /:)4tIV
} *@Z'{V\
} Z9y:}:j"
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归并排序: bBf+z7iyc
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package org.rut.util.algorithm.support; TfOZ>uR"g
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import org.rut.util.algorithm.SortUtil; s&l[GKR
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/** mCo5Gdt
* @author treeroot
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* @since 2006-2-2 ,b8AB_yw
* @version 1.0 \v<}{\.|$
*/ R:E:Y|&#
public class MergeSort implements SortUtil.Sort{ L xO'$oKZV
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/* (non-Javadoc) 9cQSS'`F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {rDZKy^f
*/ uo^>95lkv
public void sort(int[] data) { 3ml|`S
int[] temp=new int[data.length]; $i hIHl6'
mergeSort(data,temp,0,data.length-1); C%&7,F7
} :>5]A6Wi
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private void mergeSort(int[] data,int[] temp,int l,int r){ aNz%vbh\
int mid=(l+r)/2; /:DxB00
if(l==r) return ; ??Lxb% 7R
mergeSort(data,temp,l,mid); Lv"83$^S9
mergeSort(data,temp,mid+1,r); W~qo
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for(int i=l;i<=r;i++){ ?!ig/ufZ
temp=data; ,DjZDw
} u'C4d6\wS
int i1=l; a]*^uEs
int i2=mid+1; DRnXo-Aaj
for(int cur=l;cur<=r;cur++){ -p1arA
if(i1==mid+1) C o M8
data[cur]=temp[i2++]; l40$}!!<
else if(i2>r) 6eBQ9XV
data[cur]=temp[i1++]; LLMkv!%D
else if(temp[i1] data[cur]=temp[i1++]; Y+N87C<
else sr\MQ?\fB
data[cur]=temp[i2++]; DmYm~hzJ
} `i}\k
} W$&Q.Z
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} otOl7XF
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改进后的归并排序: N\u-8nE5
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package org.rut.util.algorithm.support; KNnE5f
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import org.rut.util.algorithm.SortUtil; F-nt7l
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/** CNwhH)*
* @author treeroot 5segzaI
* @since 2006-2-2 )gR&Ms4
* @version 1.0 $KiA~l
*/ E-/]UH3u H
public class ImprovedMergeSort implements SortUtil.Sort { NO&OuiN
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private static final int THRESHOLD = 10; 6*e:ey U
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/* _tjH=Ff$
* (non-Javadoc) 9'tM65K
* mb#)w`<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Yv{AoL~
*/ 6l=n&YO
public void sort(int[] data) { {Hb _o)S
int[] temp=new int[data.length]; 0YS*=J"7z
mergeSort(data,temp,0,data.length-1); =($qiL'h
} ?vhW`LXNB
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private void mergeSort(int[] data, int[] temp, int l, int r) { Qcw/>LaL:
int i, j, k; k_skn3,u
int mid = (l + r) / 2; A4#m&o