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[JAVA]用Java实现的各种排序

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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。 k6Uc3O  
插入排序: G NS`.fS  
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package org.rut.util.algorithm.support; ;U<rc'qE  
$8p7D?Y  
import org.rut.util.algorithm.SortUtil; lip[n;Ir>  
/** M @3"<[g  
* @author treeroot WHAQu]{  
* @since 2006-2-2 ALEnI@0  
* @version 1.0 -F=v6N{  
*/ M[z)6 .  
public class InsertSort implements SortUtil.Sort{  .AYj'Y  
3SSm5{197  
/* (non-Javadoc) / }Rz=&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ja SI^go  
*/ dgDy5{_  
public void sort(int[] data) { <BSc* 9Q  
int temp; i 9g>9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); a6:x"Tv  
} U~W?s(Cy%  
} -QyhwG =  
} ?x^z]N|P  
uNn[[LS  
} <" @zn  
x Au/  
冒泡排序: &QG6!`fK}3  
/t6X(*xoy  
package org.rut.util.algorithm.support; or k=`};  
XyMG.r-,  
import org.rut.util.algorithm.SortUtil; 8vuCc=  
7 Sa1;%R  
/** cpt<WK}  
* @author treeroot SlSM+F  
* @since 2006-2-2 (~$/$%b  
* @version 1.0 N)S!7%ne  
*/ `z0{S!  
public class BubbleSort implements SortUtil.Sort{ 9S[XTU  
JbO ~n )%x  
/* (non-Javadoc) 'xv8Gwf"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F`nb21{0y&  
*/ 7O`o ovW$  
public void sort(int[] data) { BZb]SoAL  
int temp; q> s-Y|  
for(int i=0;i for(int j=data.length-1;j>i;j--){ :K?0e `  
if(data[j] SortUtil.swap(data,j,j-1); E42eOGp9i  
} ^v9|%^ug  
} #k<":O  
} hh~n#7w~IR  
} }X;U|]d  
CzV(cSS9-  
} >)_ojDO  
*?yJkJ"  
选择排序: M+wt_ _vHf  
^MD;"A<  
package org.rut.util.algorithm.support; Q,Z*8FH=  
hNXBVIL<&  
import org.rut.util.algorithm.SortUtil; ;Qi }{;+  
JK#vkCkyM  
/** zH=!*[d8  
* @author treeroot dSIH9D  
* @since 2006-2-2 4R>zPEo  
* @version 1.0 %o?IsIys  
*/ f>$h@/-*  
public class SelectionSort implements SortUtil.Sort { ]%RNA:(F'  
-{|`H[nmD  
/* TO;.eN!sv  
* (non-Javadoc) ? 8 1X  
* iy\KzoB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1u]P4Gf=  
*/ }8'&r(cN4  
public void sort(int[] data) { ~9D~7UR  
int temp; K8^kJSF\  
for (int i = 0; i < data.length; i++) { b'x$2K;E  
int lowIndex = i; -%IcYzyA  
for (int j = data.length - 1; j > i; j--) { Jx-wO/  
if (data[j] < data[lowIndex]) { HTz+K6&  
lowIndex = j; }xn_6  
} )_jSG5k  
} t~K%.|'0  
SortUtil.swap(data,i,lowIndex); RE46k`44  
} (UEXxUdQ_Q  
} 3$M3Q]z  
KSs1CF'i  
} lx,`hl%  
N:+ taz-  
Shell排序: ~hN~>0O  
d-!<C7O}  
package org.rut.util.algorithm.support; "Q+83adY4x  
(!K+P[g  
import org.rut.util.algorithm.SortUtil; ~waNPjPRG  
<"&'>?8j  
/** {_ V0  
* @author treeroot ;q#]-^  
* @since 2006-2-2 *07sK1wW  
* @version 1.0 AO 0!liQ  
*/ Ya4?{2h@+  
public class ShellSort implements SortUtil.Sort{ y62%26 [  
2z2`  
/* (non-Javadoc) /NBTvTI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -6EK#!+  
*/ 66ohmP@04Z  
public void sort(int[] data) { (6xDu.u?A  
for(int i=data.length/2;i>2;i/=2){ -Wo15O"  
for(int j=0;j insertSort(data,j,i); f{Qp  
} Q</h-skLZ  
} )+~E8yK  
insertSort(data,0,1); WfVMdwz=  
} 6M><(1fT  
|4SW[>WT:  
/** O*7i } \{  
* @param data *6*-WV6  
* @param j c4]u&tvjJ  
* @param i Cd~LsdKE5  
*/ /7p>7q 9g  
private void insertSort(int[] data, int start, int inc) { ePA;:8)_j  
int temp; \graMu}-  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 5#uO'<2$  
} k,_i#9 X  
} ^5)_wUf  
} 7*'@qjTos  
_Y#Bm/*  
} f)Y  
n6cq\@~A  
快速排序: OOLe[P3J3  
NV~vuC  
package org.rut.util.algorithm.support; (Jpm KO  
jsWX 6(=  
import org.rut.util.algorithm.SortUtil; 3]S`|#J  
,>S+-L8  
/** ak2dn]]D  
* @author treeroot JN^bo(kb  
* @since 2006-2-2 ,9vJtP+T+!  
* @version 1.0 }xJR.]).KW  
*/ sRi%1r7  
public class QuickSort implements SortUtil.Sort{ %BICt @E  
^srs$ w]  
/* (non-Javadoc) {rfte'4;=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J0qXtr%h\  
*/ ^H'kHl'F  
public void sort(int[] data) { EE9vk*[@C  
quickSort(data,0,data.length-1); {Y "8~  
} AA.Ys89V  
private void quickSort(int[] data,int i,int j){ V0T<eH<  
int pivotIndex=(i+j)/2; 9<Ag1l  
file://swap j`Nh7+qs  
SortUtil.swap(data,pivotIndex,j); qm}\?_  
< 4$YO-:E  
int k=partition(data,i-1,j,data[j]); ?&\h;11T  
SortUtil.swap(data,k,j); #'iPDRYy  
if((k-i)>1) quickSort(data,i,k-1); 8>d q=0:  
if((j-k)>1) quickSort(data,k+1,j); %t{Sb4XZ4k  
PS/W h  
} #~*XDWvIS~  
/** 26}u4W$  
* @param data uDI}R]8~  
* @param i 1^tSn#j  
* @param j pMDH  
* @return 5Abz 5-^KH  
*/ q /:T1a7!  
private int partition(int[] data, int l, int r,int pivot) { ;9vIa7L&  
do{ 6."PS4}:  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Tfr`?:yF  
SortUtil.swap(data,l,r); +#9xA6,AE  
} u(8~4P0w  
while(l SortUtil.swap(data,l,r); Pwg/Vhfh  
return l; %B0w~[!4}  
} )ph30B  
Vv2{^ !aZ  
} Yu1QcFuy  
nZ541o@t9  
改进后的快速排序: e"lD`*U8R  
)G^p1o;\  
package org.rut.util.algorithm.support; 7t`E@dm  
|$Qp0vOA}  
import org.rut.util.algorithm.SortUtil; An/>0 5|  
0c`sb+?  
/** g(KK9Unu  
* @author treeroot G 2!}R  
* @since 2006-2-2 FoQ?U=er  
* @version 1.0 ^4RO  
*/ :a=ro2NH  
public class ImprovedQuickSort implements SortUtil.Sort { "k/;`eAP  
@>+^W&  
private static int MAX_STACK_SIZE=4096; -e &$,R>;  
private static int THRESHOLD=10; $^] 9  
/* (non-Javadoc) ]!]`~ Z/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  ^8b~ZX  
*/ G% o7BX  
public void sort(int[] data) { 0W;q!H[G  
int[] stack=new int[MAX_STACK_SIZE]; j~X j  
ZYrKG+fkl  
int top=-1; X77A; US  
int pivot; FP.(E9  
int pivotIndex,l,r; MP6 \r  
@QvfN>T  
stack[++top]=0; >oVc5}  
stack[++top]=data.length-1; Ngn\nkf  
58M'r{8_  
while(top>0){ qJ#L)  
int j=stack[top--]; ,G916J*XA  
int i=stack[top--]; N;e;4,_ n  
[6Uudiw  
pivotIndex=(i+j)/2; %{N>c:2I$  
pivot=data[pivotIndex]; pA*D/P-  
?y+\v'3v  
SortUtil.swap(data,pivotIndex,j); {KF7j63  
0SAG6k~x  
file://partition I@8+k&nXS  
l=i-1; trID#DT~  
r=j; _Ym&UY.u#  
do{ dM);LT8@  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); U)&H.^@r$  
SortUtil.swap(data,l,r); g @c=Bt$  
} pkrl@ jv >  
while(l SortUtil.swap(data,l,r); sg'Y4  
SortUtil.swap(data,l,j); @ef//G+Z"  
O[i2A (  
if((l-i)>THRESHOLD){ GE/IaLo  
stack[++top]=i; z6GL,wo#  
stack[++top]=l-1; fJSV)\e0  
} I v 80,hW  
if((j-l)>THRESHOLD){ T>AI0R3  
stack[++top]=l+1; Hl4vLx@  
stack[++top]=j; :epitpJ  
} 20SF<V  
-o! saX<  
} >tE,8  
file://new InsertSort().sort(data); cOj +}Hz58  
insertSort(data); $G^H7|PzdC  
} ~|$) 1  
/** VNOK>+  
* @param data }RC. Q`b  
*/ 8ESkG  
private void insertSort(int[] data) { ~@a) E+LsF  
int temp; juve9HaW  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); r`mzsO-'  
} 7+A-7ci  
} O(c4iWm  
} v]d?6g  
IAt+S-q0  
} ^YB\\a9  
  t`&s  
归并排序: Ay[9k=q]  
`siy!R  
package org.rut.util.algorithm.support; &`\kb2uep  
n=#[Mi $Y  
import org.rut.util.algorithm.SortUtil; @N:3`[oB  
:`!mCW`Q-  
/** m-pIFL<^N  
* @author treeroot 6=[ PJM  
* @since 2006-2-2 swe8  
* @version 1.0 M#22Zfxq   
*/ 3`C3+  
public class MergeSort implements SortUtil.Sort{ sjVl/t`l  
=,} !Ns{k  
/* (non-Javadoc) $(<*pU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s$=B~l  
*/ B+e~k?O]1  
public void sort(int[] data) { l<+,(E=  
int[] temp=new int[data.length]; RWEgUDX^/  
mergeSort(data,temp,0,data.length-1); W0C$*oe!_i  
} BRQ5  
BM}a?nnoc  
private void mergeSort(int[] data,int[] temp,int l,int r){ A5 J#x6@  
int mid=(l+r)/2; wE=8jl*  
if(l==r) return ; v(WL 3[y;  
mergeSort(data,temp,l,mid); 'XjHB!!hU  
mergeSort(data,temp,mid+1,r); ;:K?7wfXn  
for(int i=l;i<=r;i++){ HoQ(1e$G-  
temp=data; v+, w{~7RH  
} /)HEx&SQmZ  
int i1=l; m]b.P,~v  
int i2=mid+1; aG&kl O>m  
for(int cur=l;cur<=r;cur++){ -Z#]_C{Y-)  
if(i1==mid+1) E"vi+'(v  
data[cur]=temp[i2++]; 4?6'~G$k  
else if(i2>r) )I1V 2k$n  
data[cur]=temp[i1++]; S&g -  
else if(temp[i1] data[cur]=temp[i1++]; c[e GpZ]  
else Nl>b'G96  
data[cur]=temp[i2++]; 1F%*k &R  
} kKTED1MW&W  
} UM;bVf?  
!EC\1rmdlN  
} 0DjBqh$  
7*W$GCd8  
改进后的归并排序: I2!&="7@  
tw^.(m5d  
package org.rut.util.algorithm.support; "MKsSty  
Vam8NnZ|r  
import org.rut.util.algorithm.SortUtil; .*..pf|/  
oHGf |  
/** kT3;%D^  
* @author treeroot [aVJYr2  
* @since 2006-2-2 +(hwe jyC  
* @version 1.0 jF2GHyB  
*/ I.0Usa"z  
public class ImprovedMergeSort implements SortUtil.Sort { 1+[|pXT}  
GoGgw]h>x  
private static final int THRESHOLD = 10; gf8U &;  
k.VOS 0  
/* :'Kx?Es   
* (non-Javadoc) T_ #oMXZ/  
* faeyk]u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (4gQe6tA  
*/ >Qu^{o  
public void sort(int[] data) { N`:b vr  
int[] temp=new int[data.length]; B$eF@v"  
mergeSort(data,temp,0,data.length-1); H s 3*OhK\  
} : l[Q  
9O_N iu0  
private void mergeSort(int[] data, int[] temp, int l, int r) { --hnv/AjI  
int i, j, k; yM~D.D3H  
int mid = (l + r) / 2; Jm^jz  
if (l == r) J#5o  
return; [wxI X  
if ((mid - l) >= THRESHOLD) L*Cf&c`8r  
mergeSort(data, temp, l, mid); tOVm~C,R  
else gx.]4 v  
insertSort(data, l, mid - l + 1); Q";eyYdOL  
if ((r - mid) > THRESHOLD) )xs,  
mergeSort(data, temp, mid + 1, r); M- A}(r +J  
else !~kzxY  
insertSort(data, mid + 1, r - mid); f@g  
VAzJclB  
for (i = l; i <= mid; i++) { (pg9cM]NA  
temp = data; @=1``z#  
} B)NB6dCp  
for (j = 1; j <= r - mid; j++) { K Hc+  
temp[r - j + 1] = data[j + mid]; t fQq3#  
} m^+ ~pC5  
int a = temp[l]; ?V)6`St#C  
int b = temp[r]; p+?WhxG)  
for (i = l, j = r, k = l; k <= r; k++) { %j; cXN  
if (a < b) { U]$3NIe  
data[k] = temp[i++]; u'."E7o#  
a = temp; Wg&:xff  
} else { A4x3TW?  
data[k] = temp[j--]; WGK::?  
b = temp[j]; \]El%j4  
} 9m!fW|4  
} 55\mQ|.Jn  
} xb\:H@92  
zBfBYhS-  
/** B8Z66#EQ  
* @param data Mr(3]EfgO  
* @param l RdHR[Usm  
* @param i yL-L2  
*/ 2D"/k'iA  
private void insertSort(int[] data, int start, int len) { PMcyQ2R->  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); \9^@,kfP  
} " cg>g/  
} jEIL(0_H  
} F^-4Pyq@  
} ;*p} ~#2  
,?+yu6eLb  
堆排序: +l(}5(wc  
CS49M  
package org.rut.util.algorithm.support; %+~0+ev7r  
"?SnA +)  
import org.rut.util.algorithm.SortUtil; [qB=OxH?  
S8l+WF4q  
/** /Y:Zqk3  
* @author treeroot }: e9\r)  
* @since 2006-2-2 +8M{y D9#  
* @version 1.0 c/RG1w  
*/ Y|F);XXIl  
public class HeapSort implements SortUtil.Sort{ ]Ea-?IhD  
||f 4f3R'  
/* (non-Javadoc) Nsq%b?#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .PgkHb=l@  
*/ x{E[qH_1Fm  
public void sort(int[] data) { ^_uzr}LE`  
MaxHeap h=new MaxHeap(); z5I<,[`  
h.init(data); $)3/N&GXR  
for(int i=0;i h.remove(); V.J%4&^X  
System.arraycopy(h.queue,1,data,0,data.length); ryN-d%t?  
} /+u*9ZR&1  
<OUAppH  
private static class MaxHeap{ >qCT#TY  
hjE9[{K  
void init(int[] data){ Rjf |  
this.queue=new int[data.length+1]; 8Bhng;jX  
for(int i=0;i queue[++size]=data; r"+ WUU  
fixUp(size); 7j+.H/2  
} $a G'.0HW  
} IX}l)t[:(  
0pQ>V)  
private int size=0; p: o*=  
m#Cp.|>kP4  
private int[] queue; 2.6,c$2tB  
x\*5A,w{c]  
public int get() { gU`QW_{  
return queue[1]; zMa`olTZ  
} }V 1sY^C  
z# y<QH  
public void remove() { t/3veDh@  
SortUtil.swap(queue,1,size--); Y !`H_Qo  
fixDown(1); 8)i\d`  
} ~Sh}\&3p  
file://fixdown k z#DBh!&  
private void fixDown(int k) { r )T`?y  
int j; !54%}x)3  
while ((j = k << 1) <= size) { ?}W:DGudZ  
if (j < size %26amp;%26amp; queue[j] j++; w:qwU\U>x  
if (queue[k]>queue[j]) file://不用交换 2]@U$E='s  
break; h.67] U7m  
SortUtil.swap(queue,j,k); c6e?)(V>  
k = j; !l'Zar  
} CSs3l  
} u", [ulP  
private void fixUp(int k) { &P\T{d2"  
while (k > 1) { _8bqk\m+  
int j = k >> 1; ddw!FH2W (  
if (queue[j]>queue[k]) qWWy}5SOm  
break; 'HOt?lpu!  
SortUtil.swap(queue,j,k); ztu N0}'  
k = j; [9w8oNg0  
} Q 5Ln'La$  
} A>X#[qx  
RNm/&F1C$  
} b+w|3bQa  
wt-)5f'{  
} `AYHCn  
y M>c**9  
SortUtil: f9; M"Pd  
uHy^ Bq  
package org.rut.util.algorithm; ).k=[@@V  
 M*%iMz  
import org.rut.util.algorithm.support.BubbleSort; @*F NWT6  
import org.rut.util.algorithm.support.HeapSort; ,;UVQwY  
import org.rut.util.algorithm.support.ImprovedMergeSort; ' R{ [Y)  
import org.rut.util.algorithm.support.ImprovedQuickSort; d6wsT\S  
import org.rut.util.algorithm.support.InsertSort; mhh8<BI  
import org.rut.util.algorithm.support.MergeSort; iQ:]1H s  
import org.rut.util.algorithm.support.QuickSort; 7 v#sr<  
import org.rut.util.algorithm.support.SelectionSort; I:[3x2H  
import org.rut.util.algorithm.support.ShellSort; eqYa`h@g^  
_8kZ>w(L  
/** )| 3?7?X  
* @author treeroot 7?e*b(vd  
* @since 2006-2-2 e;!si>N  
* @version 1.0 .#P'NF(5#  
*/ ;ZB[g78%R%  
public class SortUtil { a3JG&6-  
public final static int INSERT = 1; 8h}o5B  
public final static int BUBBLE = 2; 9>%ti&_-jt  
public final static int SELECTION = 3; <t&0[l  
public final static int SHELL = 4; Q % )fuI  
public final static int QUICK = 5; fC52nK&T8  
public final static int IMPROVED_QUICK = 6; 2{% U\^-  
public final static int MERGE = 7; BH0].-)[y!  
public final static int IMPROVED_MERGE = 8; c&J,O1){\  
public final static int HEAP = 9; Z-.`JkKd8  
8 Ys DE_  
public static void sort(int[] data) { `~F=  
sort(data, IMPROVED_QUICK); *v_+a:  
} 0ERA(=w5  
private static String[] name={ ~sx?aiO  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Z`Rrv$M!  
}; ?zM]p"M  
U@ Y0 z.Y  
private static Sort[] impl=new Sort[]{ M3!A?!BU  
new InsertSort(), <!Ed ND=  
new BubbleSort(), #41~`vq3  
new SelectionSort(), &Rdg07e;>  
new ShellSort(), 8GgZAu'X  
new QuickSort(), [W;iR_7T5  
new ImprovedQuickSort(), W_8N?coM  
new MergeSort(), DD{-xCCR  
new ImprovedMergeSort(), JTA65T{3  
new HeapSort() s]@()?.E$  
}; Zn0e#n  
4i|yEf  
public static String toString(int algorithm){ 4+"2K-]   
return name[algorithm-1]; |WwC@3)  
} lA>^k;+>  
8w /$!9[  
public static void sort(int[] data, int algorithm) { wr I66R}@  
impl[algorithm-1].sort(data); .5*5S[  
} dxfF.\BFDn  
yK9:LXhf  
public static interface Sort { '-c *S]:r  
public void sort(int[] data); 7vZtEwC)n  
} @ >_v/U'  
a4aM.o  
public static void swap(int[] data, int i, int j) { cip5 -Z@8  
int temp = data; 1seWR"  
data = data[j]; j}u b  
data[j] = temp; *WMI<w~_  
} Sq22]  
} hvW FzT5  
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