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。 ~*HQPp?v
插入排序: ON,[!pc
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package org.rut.util.algorithm.support; MgeC-XQM
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import org.rut.util.algorithm.SortUtil; o701RG~)
/** csy6_q(
* @author treeroot RlOy,/-<
* @since 2006-2-2 2:38CdkYp
* @version 1.0 g(@F`W[
*/ ^Hx}.?1
public class InsertSort implements SortUtil.Sort{ e9{ii2M
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/* (non-Javadoc) |'h(S|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OG5{oH#K
*/ t#^Cem<
public void sort(int[] data) { M& ZKc
int temp; tu\XuDky
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); y\T$) XGV
} tgF~5
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} P T;{U<5
} 3"h*L8No
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} &;DCN
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冒泡排序: JP>EW&M
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package org.rut.util.algorithm.support; s<!A<+Sh
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import org.rut.util.algorithm.SortUtil; 9^a|yyzL
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/** ~su>RolaX
* @author treeroot ?(9*@
* @since 2006-2-2 =t,oj6P~
* @version 1.0 |/Vq{gxp+
*/ eKiDc=@
public class BubbleSort implements SortUtil.Sort{ U1YqyG8
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/* (non-Javadoc) Cj=R\@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <f>77vh0
*/ Y2L{oQ.C2
public void sort(int[] data) { :Qa*-)rs
int temp; \rr"EAk]
for(int i=0;i for(int j=data.length-1;j>i;j--){ G<C D4:V
if(data[j] SortUtil.swap(data,j,j-1); #:?:gY<
} %r^tZ ;;l
} .#&)%}GC
} Ic'D#m
} G#%Sokkb'
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} TCp9C1Q4
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选择排序: =F\Xt "
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package org.rut.util.algorithm.support; <V^o.4mOg>
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import org.rut.util.algorithm.SortUtil; O ~5t[
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/** ?8O5%IrJ
* @author treeroot
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* @since 2006-2-2 n*[ZS[I
* @version 1.0 !j $cBf4
*/ 02,t
public class SelectionSort implements SortUtil.Sort { >#h,q|B
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/* ef'kG"1
* (non-Javadoc) /`M#
* e#oK%
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;r@=[h
*/ 7&id(&y/
public void sort(int[] data) { vv)q&,<c
int temp; ;pm/nu
for (int i = 0; i < data.length; i++) { kwp%5C-S
int lowIndex = i; ozY$}|sjDT
for (int j = data.length - 1; j > i; j--) { H^'%$F?Ss
if (data[j] < data[lowIndex]) { G ]h
lowIndex = j; Ry+?#P+
} +(!/(2>~
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SortUtil.swap(data,i,lowIndex); \:@6(e Bh
} Wrp~OF0k
} y{M7kYWtHV
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} P].Eb7I
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Shell排序: 4rDVCXE
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package org.rut.util.algorithm.support; !Ge;f/@
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import org.rut.util.algorithm.SortUtil; e#hg,I
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/** 5@RcAQb:
* @author treeroot * K$U[$s
* @since 2006-2-2 *-ys}sX
* @version 1.0 1V]ws}XW
*/ GG%;~4#2
public class ShellSort implements SortUtil.Sort{ azFJ-0n@"
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/* (non-Javadoc) f@`|2wG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @q!T,({kx
*/ zsuqRM
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public void sort(int[] data) { |[~S&
for(int i=data.length/2;i>2;i/=2){ zHKP$k8
for(int j=0;j insertSort(data,j,i); p"P+8"`
} ^U?Ac=
} UIU Pi
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insertSort(data,0,1); m=n79]b:N
} 0to`=;JI
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/** %KVmpWku
* @param data ]-t>F
* @param j JFI*Pt;X9
* @param i sPc}hG+N
*/ vw>(JCR
private void insertSort(int[] data, int start, int inc) { ktPM66`b
int temp; .RmFYV0,
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); sf$hsPC^
} 6*B%3\z)
} GPni%P#a@0
} 5`3x(=b
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} ;i.MDW^N
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快速排序: PCwc=
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package org.rut.util.algorithm.support; jv v=
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import org.rut.util.algorithm.SortUtil; $hc=H
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/** xyo~p,(~t
* @author treeroot +@uA
* @since 2006-2-2 &~;M16XM,e
* @version 1.0 +-b'+mF
*/ #do%u"q
public class QuickSort implements SortUtil.Sort{ xKUWj<+/
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/* (non-Javadoc) ^X6e\]yj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #9s)f R
*/ ,FP0n
public void sort(int[] data) { i+5Qs-dHA
quickSort(data,0,data.length-1); b5MU$}:
} N?t*4Y
private void quickSort(int[] data,int i,int j){ //N="9)@
int pivotIndex=(i+j)/2; YFu>`w^Y
file://swap ]gX8z#*k
SortUtil.swap(data,pivotIndex,j); tJ_Y6oFm=
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int k=partition(data,i-1,j,data[j]); T*@o?U
SortUtil.swap(data,k,j); 02J(*_o
if((k-i)>1) quickSort(data,i,k-1); _R|_1xa=
if((j-k)>1) quickSort(data,k+1,j); B#hvw'}
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} Ge({sy>X
/** W{Je)N
* @param data phG*It}
* @param i F3vywN1$,
* @param j v Cej( ))
* @return 59$PWfi-\
*/ ?7pn%_S
private int partition(int[] data, int l, int r,int pivot) { s)E8}-v
do{ tq,^!RSbZ
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); [>>_%T\I
SortUtil.swap(data,l,r); VOC$Kqg;
} @C^x&Sjm
while(l SortUtil.swap(data,l,r); A",}Ikh='`
return l; 94O\M
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} Z,AY<[/C
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} @f"[*7Q`/
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改进后的快速排序: -rYb{<;ST
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package org.rut.util.algorithm.support; T~$Eh6
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import org.rut.util.algorithm.SortUtil; (Z @dz
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/** D^>d<LX
* @author treeroot zqrqbqK5R
* @since 2006-2-2 ^w%%$9=:r
* @version 1.0 b3_P??yp
*/ 3n)Kzexh
public class ImprovedQuickSort implements SortUtil.Sort { '/XP4B\(E
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private static int MAX_STACK_SIZE=4096; Q=%W-
private static int THRESHOLD=10; $bKXP(
/* (non-Javadoc) E@otV6Wk[@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {S+?n[1r\
*/ ?7)v:$(G}
public void sort(int[] data) { 4~A$u^scn
int[] stack=new int[MAX_STACK_SIZE]; qLX<[UL
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int top=-1; ?fP3R':s
int pivot; qT$ IV\;_
int pivotIndex,l,r; yogL8V-^4
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stack[++top]=0; 8a@k6OZ
stack[++top]=data.length-1; OY(CB(2N
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while(top>0){ y5=,q]Qjk[
int j=stack[top--]; 6/3E!8
int i=stack[top--]; yKrbGK*=_
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pivotIndex=(i+j)/2; -1B. A
pivot=data[pivotIndex]; #?r|6<4X
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SortUtil.swap(data,pivotIndex,j); \z2y?"\?
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file://partition NwOV2E6@OW
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r=j; ,6MJW#~]
do{ |xZu?)M4
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); `peR ,E
SortUtil.swap(data,l,r); "
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} xv2c8g~vD
while(l SortUtil.swap(data,l,r); ^/}4M'[ w
SortUtil.swap(data,l,j); ;{H Dz$
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if((l-i)>THRESHOLD){ (x/:j*`K
stack[++top]=i; zd8A8]&-
stack[++top]=l-1; p{_*<"cfYn
} |S).,B
if((j-l)>THRESHOLD){ XZ8rM4
]
stack[++top]=l+1; 6
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stack[++top]=j;
B*}]'
} `WCL-OoZc5
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} 6W1+@
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file://new InsertSort().sort(data); aY,Bt
insertSort(data); qHgtd+
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} ?mC'ZYQI
/** kmTYRl
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* @param data i)(G0/:
*/ 2DsP "q79k
private void insertSort(int[] data) { ?5ZvvAi
int temp; &0[L2x}7
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); aB (pdW4
} f4AN"rW
} ~vpF|4Zn5
} *2~WP'~PQd
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} <X{w^
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归并排序: >Q(\vl@N=
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package org.rut.util.algorithm.support; .H M3s
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import org.rut.util.algorithm.SortUtil; R#ZJLT
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/** 6y
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* @author treeroot '3^ qW
* @since 2006-2-2 RAhDSDf
* @version 1.0 V D7^wd9
*/ 4?@#w>(
public class MergeSort implements SortUtil.Sort{ |[5;dt_U/
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/* (non-Javadoc) xjnAK!sD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ??B!UXi4R
*/ XW8@c2jN\7
public void sort(int[] data) { eLh35tw
int[] temp=new int[data.length]; z}-R^"40
mergeSort(data,temp,0,data.length-1); (t&`m[>K
} E Lq1
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private void mergeSort(int[] data,int[] temp,int l,int r){ 6W3oIt
int mid=(l+r)/2; " v
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if(l==r) return ; t1
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mergeSort(data,temp,l,mid); e~)4v
mergeSort(data,temp,mid+1,r); >{~xO 6H
for(int i=l;i<=r;i++){ WdS1v%
temp=data; wTR?8$
} jCtk3No
int i1=l; 2P`./1L
int i2=mid+1; ,#;`f=aqTG
for(int cur=l;cur<=r;cur++){ oF+yh!~mM
if(i1==mid+1) `%#_y67v
data[cur]=temp[i2++]; KLG .?`h:
else if(i2>r) r8*xp\/
data[cur]=temp[i1++]; !WGQ34R {
else if(temp[i1] data[cur]=temp[i1++]; .j,xh )v"
else fk?!0M6d
data[cur]=temp[i2++]; X1}M_h%
} tAep_GR
} T>1#SWQ/9
@V^.eVM\R
} 3j$,L(
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改进后的归并排序: ,3}+t6O"
a9^})By&
package org.rut.util.algorithm.support; Jn|<G
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import org.rut.util.algorithm.SortUtil; v_%6Ly
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/** 8'3&z-
* @author treeroot u&o4?]6
* @since 2006-2-2 4%qmwt*p
* @version 1.0 X1oR
*/ ?RG;q
public class ImprovedMergeSort implements SortUtil.Sort { nSSJl
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private static final int THRESHOLD = 10; B/lIn'=
@%u}|iF|
/* ?uTuO
* (non-Javadoc) ph(LsPT-
* !E00I0W-h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) />9`Mbg[G
*/ ]P7gEBi
public void sort(int[] data) { 5lzbg
int[] temp=new int[data.length]; B3[X{n$px
mergeSort(data,temp,0,data.length-1); B$s6|~
} a}VR>!b
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private void mergeSort(int[] data, int[] temp, int l, int r) { buzpmRoN)
int i, j, k; 'CqAjlj
int mid = (l + r) / 2; k)F!gV#
if (l == r) <T.R%Jys
return; <)O#Y76s
if ((mid - l) >= THRESHOLD) q\!"FDOl4
mergeSort(data, temp, l, mid); n@bkZ/G
else +J| LfXgB
insertSort(data, l, mid - l + 1); 5"U5^6:T
if ((r - mid) > THRESHOLD) / M]P&Zb |
mergeSort(data, temp, mid + 1, r); {*CG&-k2D
else BBX/ &d8n
insertSort(data, mid + 1, r - mid); suhnA(T{
.':17 $c`H
for (i = l; i <= mid; i++) { c"`HKfL
temp = data; RmKbnS$*q
} ~PF,[$?4n
for (j = 1; j <= r - mid; j++) { dE[X6$H[
temp[r - j + 1] = data[j + mid]; >yVrIko
} ^56D)A=
int a = temp[l]; 3#udzC
int b = temp[r]; d1^5r
31
for (i = l, j = r, k = l; k <= r; k++) { ^"/TWl>jB
if (a < b) { *CF80DJ
data[k] = temp[i++]; ;VCFDE{K=
a = temp; F [-D
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} else { O7Jp;
data[k] = temp[j--]; =r`E%P:
b = temp[j]; Eqny'44
} 4TU\SP8sM
} ?_S);
} {ByKTx&
#|:q"l9
/** A~?)g!tS<
* @param data ,T 3M
* @param l FRPdfo37
* @param i BUh(pS:
*/ 1,Pg^Xu
private void insertSort(int[] data, int start, int len) { "Gqas bX
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); *E|3Vy{4
} :N<o<