社区应用 最新帖子 精华区 社区服务 会员列表 统计排行 社区论坛任务 迷你宠物
  • 5301阅读
  • 0回复

[JAVA]用Java实现的各种排序

级别: 终身会员
发帖
3743
铜板
8
人品值
493
贡献值
9
交易币
0
好评度
3746
信誉值
0
金币
0
所在楼道
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。 Y!`?q8z$G  
插入排序: Vy9n3W"FB1  
MPB6  
package org.rut.util.algorithm.support; zZxP= c  
T'V(%\w  
import org.rut.util.algorithm.SortUtil; ke%zp-2c  
/** 06`__$@h  
* @author treeroot \w:u&6,0O  
* @since 2006-2-2 qYh,No5\;t  
* @version 1.0 -3V~YhG  
*/ i`Yf|^;@2>  
public class InsertSort implements SortUtil.Sort{ l=oVC6C  
x B?:G  
/* (non-Javadoc) 7HJv4\K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) </%H'V@  
*/ ? vlGr5#  
public void sort(int[] data) { 9t[278B6  
int temp; Wf?sJ`.%b  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); U\[V !1O  
} ^"Y'zI L  
} 1Q%.-vs  
} y"hM6JI  
MT5A%|He  
} I%&9`ceWY  
EH:1Z*|Z{\  
冒泡排序: q^cFD  
<Z;7=k  
package org.rut.util.algorithm.support; &SM$oy#?  
PYUY bRn  
import org.rut.util.algorithm.SortUtil; DG-vTr  
|:?.-tq  
/** o ,!"E^  
* @author treeroot So^`L s;S  
* @since 2006-2-2 q!TbM"  
* @version 1.0 =4 D_-Q  
*/ $P-m6  
public class BubbleSort implements SortUtil.Sort{ Jv<)/Km`  
Id*^H:]C#  
/* (non-Javadoc) >(CoXSV5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ""+*Gn 7^8  
*/ pd1m/:  
public void sort(int[] data) { ;?!rpj  
int temp; E oR(/*'  
for(int i=0;i for(int j=data.length-1;j>i;j--){ C{Ug ?hVP  
if(data[j] SortUtil.swap(data,j,j-1); U{_s1  
} 7`/qL "  
} CJOl|"UyJ  
} 8?YW i  
} `|w#K28t"  
D5>~'N3b  
} (0Qq rNs  
!VHIl&Mos  
选择排序: t/1NTa  
_pGviGR  
package org.rut.util.algorithm.support; =QfKDA  
aX%Zuyny  
import org.rut.util.algorithm.SortUtil; 9/M!S[N9  
?>8zU;Aj  
/** qtN29[x  
* @author treeroot I`TD*D  
* @since 2006-2-2 !S!03|  
* @version 1.0 EAB+kY  
*/ K)+l6Q  
public class SelectionSort implements SortUtil.Sort { LPn }QzH  
#<PdZl R  
/* 5Nb_K`Vp*  
* (non-Javadoc) #}(Df&  
* |w2AB7EU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +I n"OR%  
*/ g)A0PvEu  
public void sort(int[] data) { a~7osRmp0  
int temp; 1.H!A@  
for (int i = 0; i < data.length; i++) { ~BZV:Es  
int lowIndex = i; KaE;4gwM  
for (int j = data.length - 1; j > i; j--) { 5#)<rK  
if (data[j] < data[lowIndex]) { HdUW(FZ  
lowIndex = j; KL  mB  
} BznA)EK?@  
} grdyiBSVn  
SortUtil.swap(data,i,lowIndex); -l@W)?$  
} b=U MoWS  
} (VAL.v*  
j2 ^T:q[  
} BDRVT Y(s  
Vk_&W.~  
Shell排序: a.IF%hP0xo  
Y^Q|l%Qrb  
package org.rut.util.algorithm.support; ?1:/ 6  
d`<^+p)oy  
import org.rut.util.algorithm.SortUtil; =k= 2~ j  
~&lJT  
/** Mgs|*u-5  
* @author treeroot V8$bPVps  
* @since 2006-2-2 B 9Q. s  
* @version 1.0 XHM"agrhSQ  
*/ ].P(/~FS9  
public class ShellSort implements SortUtil.Sort{ 6xIYg^  
F` 5/9?;|  
/* (non-Javadoc) ONq/JW$?LV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o;>3z*9?3  
*/ /_OZ1jX  
public void sort(int[] data) { nvK7*-  
for(int i=data.length/2;i>2;i/=2){ <`_OpNxqW  
for(int j=0;j insertSort(data,j,i); !b->u_  
} CPNN!%-  
} ~!-8l&C  
insertSort(data,0,1); >DUE8hp ;<  
} nYy}''l<  
Sje0:;;|  
/** HL}~W}!j  
* @param data Y0yO `W4  
* @param j 5%+bWI{w  
* @param i T5jG IIa  
*/ *tM7>  
private void insertSort(int[] data, int start, int inc) { Ru^ ONw"  
int temp; 1R%`i '$/  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); W}2 &Pax  
} 9>&tMq  
} FNm6/_u3  
} d<Q+D1  
iynS4]`U  
} tP Efz+1N  
7;}3{z  
快速排序: Ipz 1+ #s'  
d6@jEa-  
package org.rut.util.algorithm.support; c`i=(D<  
+#uNQ`1v  
import org.rut.util.algorithm.SortUtil; zt[4_;2Y  
G(OT"+O,  
/** NC.P 2^%  
* @author treeroot QYTTP6 Gz+  
* @since 2006-2-2 $#7J\=GZ+  
* @version 1.0 #}!>iFBcH  
*/ r d6F"W  
public class QuickSort implements SortUtil.Sort{ q= yZx)  
n*m"L|:ff  
/* (non-Javadoc) }K/}(zuy1Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i$JG^6,O  
*/ {eswe  
public void sort(int[] data) { !P~ PF:W~|  
quickSort(data,0,data.length-1); *pTO|x{  
} KM5DYy2 A6  
private void quickSort(int[] data,int i,int j){ V4eng "  
int pivotIndex=(i+j)/2; v*H &F   
file://swap :#\B {)(  
SortUtil.swap(data,pivotIndex,j); (' Ko#3b  
{Bq"$M!Y  
int k=partition(data,i-1,j,data[j]); Oh/b?|imG  
SortUtil.swap(data,k,j); [7e{=\`=  
if((k-i)>1) quickSort(data,i,k-1); 02W4-*)  
if((j-k)>1) quickSort(data,k+1,j); xZP>g  
>C:"$x2"#(  
} Z;fm;X%4  
/** }(+=/$C"#  
* @param data uZo`IKJ  
* @param i ].-J.  
* @param j up &NCX  
* @return G/fP(o-Wd  
*/ c+8>EU AW  
private int partition(int[] data, int l, int r,int pivot) { rv,NQZ  
do{ 6MQs \J6.  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); NF/Ti5y  
SortUtil.swap(data,l,r); rwL=R,  
} V5u}C-o  
while(l SortUtil.swap(data,l,r); MvZ+n  
return l; <84C tv  
} qIDWl{b<  
hY.e[+  
} UH 47e  
/o|PA:6J  
改进后的快速排序: xTJ Sr2f  
!dyxE'T2  
package org.rut.util.algorithm.support; pkXfsi-Nu  
Z6IJo%s  
import org.rut.util.algorithm.SortUtil; H~?*KcZ 0\  
cuQ7kECV  
/** 29a_ZU7e6  
* @author treeroot b(#"w[|  
* @since 2006-2-2 YN%=Oq  
* @version 1.0 j<ABO")v  
*/ qe5tcv}u  
public class ImprovedQuickSort implements SortUtil.Sort { stg30><  
>'} Y1_S5  
private static int MAX_STACK_SIZE=4096; U|Bsa(?nx  
private static int THRESHOLD=10; )IFl 0<d  
/* (non-Javadoc) &G-#*OG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S2rEy2\}:  
*/ /nC{)s?S'  
public void sort(int[] data) { p}YI#f in/  
int[] stack=new int[MAX_STACK_SIZE]; ( zn_8s  
5q5 )uv"  
int top=-1; Q7~'![(a  
int pivot; Gur8.A;Y  
int pivotIndex,l,r; V[o7J r~  
UAsF0&]  
stack[++top]=0; SON ^CvMs{  
stack[++top]=data.length-1; ; x:k-s2-  
Io$w|~x  
while(top>0){ ku/\16E/k  
int j=stack[top--]; V!T^wh;  
int i=stack[top--]; wr$cK'5ZL  
BIxV|\k  
pivotIndex=(i+j)/2; h8f!<:rTS  
pivot=data[pivotIndex]; '1W!xQ}E  
r{t. c?/  
SortUtil.swap(data,pivotIndex,j); MV"E?}0  
P0%N Q1bn  
file://partition n-b>m7O(  
l=i-1; S}oG.r 9  
r=j; 7?6xPKQ)H  
do{ 5h`m]#YEG  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); NuC-qG#  
SortUtil.swap(data,l,r); rNxrQ  
} *QbM*oH  
while(l SortUtil.swap(data,l,r); Pm$F2YrO3  
SortUtil.swap(data,l,j); FU_fCL8yA  
t8+?U^j  
if((l-i)>THRESHOLD){ q';&SR#"`K  
stack[++top]=i; Sm$p\ORa  
stack[++top]=l-1; h5L=M^z!>  
} O&`U5w  
if((j-l)>THRESHOLD){ UWQtvQ f  
stack[++top]=l+1; f{)+-8  
stack[++top]=j; +7| [b  
} ]Nnxnp  
.)LZ`Ge3F  
} 9{_8cpm4  
file://new InsertSort().sort(data); vuYO\u+ud  
insertSort(data); }1QI"M*  
} J.1O/Pw!.a  
/** S5uJX#*;  
* @param data H_VEPp,T  
*/ Yo>`h2C4  
private void insertSort(int[] data) { x&at^Fp  
int temp; ).pO2lLF4  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /8f>':zUb  
} an3~'g?  
} h/,R{A2mO  
} u@<Pu@?xm  
:lUX5j3  
} K@B" ]6  
<^d!Vzr]  
归并排序: 5\okU"{d7  
6ayy[5tW  
package org.rut.util.algorithm.support; U z"sdi  
8]S,u:E:N  
import org.rut.util.algorithm.SortUtil; 3^{8_^I  
~j=xiP  
/** 0CT}DQ._^N  
* @author treeroot AT"!{Y "H  
* @since 2006-2-2 ?#d6i$  
* @version 1.0 \I?w)CE@R  
*/ 9lKn% |=T  
public class MergeSort implements SortUtil.Sort{ >xT^RYS  
DhZ:#mM{  
/* (non-Javadoc) e"]"F{Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &=YSM.G  
*/ Yl $X3wi  
public void sort(int[] data) { ODm&&W#*  
int[] temp=new int[data.length]; %B@ !  
mergeSort(data,temp,0,data.length-1); >^dyQyK  
} Z+ixRch@-s  
v2d<o[[C  
private void mergeSort(int[] data,int[] temp,int l,int r){ M)L/d_4ka  
int mid=(l+r)/2; Kl{-zX  
if(l==r) return ; zG_p"Z7,  
mergeSort(data,temp,l,mid); '!p=aF9L  
mergeSort(data,temp,mid+1,r); grr'd+_e  
for(int i=l;i<=r;i++){ z<hFK+j,'^  
temp=data; Re>AsnA[  
} l09Fn>wa  
int i1=l; u^Vh .g]  
int i2=mid+1; jAXR`D  
for(int cur=l;cur<=r;cur++){ _1ew(x2J  
if(i1==mid+1) 5UE409Gn'  
data[cur]=temp[i2++]; <$%ql'=  
else if(i2>r) 9z:K1  
data[cur]=temp[i1++]; T .kyV|  
else if(temp[i1] data[cur]=temp[i1++]; kB o;h.[l  
else GD!- qH  
data[cur]=temp[i2++]; _g[-=y{Bb  
} '_V #;DI  
} t-WjL@$F/  
tR1FO%nC  
} wxE?3%.j\  
vYdR ht\(  
改进后的归并排序: PY?8 [A+  
Jy]Id*u9  
package org.rut.util.algorithm.support; 6JhMkB^h  
@D)Z{=>{=5  
import org.rut.util.algorithm.SortUtil; pV7N byb4  
{Bh("wg$Lk  
/** D?^Y`G$.  
* @author treeroot (ew} gJ  
* @since 2006-2-2 b^x07lO  
* @version 1.0 Y&K <{\vE  
*/ `z9J`r= I  
public class ImprovedMergeSort implements SortUtil.Sort { #;]2=@  
:$?Q D  
private static final int THRESHOLD = 10; iRNLKi  
`?"6l5d.]  
/* m[spn@SF  
* (non-Javadoc) #n3ykzoqIX  
* LEZ&W ;bCo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;$7v%Ls=  
*/ gyev5txn  
public void sort(int[] data) { Z, T#,  
int[] temp=new int[data.length]; y%S})9  
mergeSort(data,temp,0,data.length-1); pLnB)z?  
} h./P\eDc  
_1aGtX|W  
private void mergeSort(int[] data, int[] temp, int l, int r) { <J&7]6Z  
int i, j, k; D^+?|Y@N  
int mid = (l + r) / 2; <*<U!J-i  
if (l == r) z}+i=cAN  
return; RP! X8~8  
if ((mid - l) >= THRESHOLD) )u*^@Wo  
mergeSort(data, temp, l, mid); GKZN}bOm\  
else *)'Vvu<  
insertSort(data, l, mid - l + 1); [k$efwJ  
if ((r - mid) > THRESHOLD) oZN'H T  
mergeSort(data, temp, mid + 1, r); ?'eq",c#4N  
else xr[Vp  
insertSort(data, mid + 1, r - mid); s9O2k}]  
>zs5s  
for (i = l; i <= mid; i++) { jAC78n,Fi@  
temp = data; d]SYP  
} (?>cn_m  
for (j = 1; j <= r - mid; j++) { KxIyc7.  
temp[r - j + 1] = data[j + mid]; Y.sz|u 1  
} ~}'F887f  
int a = temp[l]; wfR&li{  
int b = temp[r]; o r2|O#=  
for (i = l, j = r, k = l; k <= r; k++) { /:Lu_)5   
if (a < b) { E7nFb:zlV  
data[k] = temp[i++]; Y/fJQ6DY  
a = temp; HbM0TXo  
} else { l +'F_a  
data[k] = temp[j--]; xq[Yg15d%  
b = temp[j]; mrM4RoO  
} Qhn;`9+L  
} fvqd'2 t  
} })Yv9],6  
P`(Mk6gE  
/** lr~0pL  
* @param data 0 )}$^TV  
* @param l X(*!2uS  
* @param i L(G92,.  
*/ 8Lz]Z h=ZU  
private void insertSort(int[] data, int start, int len) { IRW^ok.'b!  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); V5p0h~PK  
} jVWK0Zba  
} qf#)lyr<D6  
} poT&-Ic[  
} (=u'sn:s  
2eb1 lJdS  
堆排序: 3<:jx~y>  
eSfnB_@x2  
package org.rut.util.algorithm.support; Y@uh[aS!  
4w93}t.z  
import org.rut.util.algorithm.SortUtil; Z[?mc|*x  
e,0-)?5R  
/** 3n]79+w@z  
* @author treeroot * F4UAQzYb  
* @since 2006-2-2 :TalW~r|  
* @version 1.0 UvJ; A  
*/ h6v077qG  
public class HeapSort implements SortUtil.Sort{ b5a.go  
[ f/I2  
/* (non-Javadoc) -c*\o3)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M 4yI`dr6  
*/ ]a'99^?\  
public void sort(int[] data) { Um` !%  
MaxHeap h=new MaxHeap(); W 7sn+g \  
h.init(data); [?0d~Q(R#  
for(int i=0;i h.remove(); cU.9}-)  
System.arraycopy(h.queue,1,data,0,data.length); pUYM}&dX  
} (?0`d  
>jg0s)RA'  
private static class MaxHeap{ r! %;R?c  
?C-Towo=i  
void init(int[] data){ 78 f$6J q  
this.queue=new int[data.length+1]; kz} R[7  
for(int i=0;i queue[++size]=data; U7h(`b  
fixUp(size); 3gEMRy*+  
} 9=`Wp6Gmn  
} p@ NaD=9  
pzZk\-0R  
private int size=0;  #xh_  
Yk!/ow@.  
private int[] queue; 0RFRbi@n(  
I\O\,yPhhP  
public int get() { 3uWkc3  
return queue[1]; 4?\:{1X=  
} U8$4 R,+  
Mkxi~p%<r  
public void remove() { WKfkKk;G  
SortUtil.swap(queue,1,size--); &7e)O=  
fixDown(1); ULJmSe  
} o5U(i  
file://fixdown X}ma]  
private void fixDown(int k) { WJH\~<{mP  
int j; !]yO^Ob.E  
while ((j = k << 1) <= size) { c2nKPEX&5  
if (j < size %26amp;%26amp; queue[j] j++; zAzP,1$?  
if (queue[k]>queue[j]) file://不用交换 mHc>"^R  
break; FS6`6M.K  
SortUtil.swap(queue,j,k);  as yZe  
k = j; {i0SS  
} q?qC  
} H,unpZ(  
private void fixUp(int k) { I#F!N6;  
while (k > 1) { w8S!%abl1  
int j = k >> 1; :Qt  
if (queue[j]>queue[k]) 8,P- 7^  
break; dP?Ge}  
SortUtil.swap(queue,j,k); fxaJZz$o  
k = j; Z<[<n0o1  
} !E8X~DJ  
} w'MGA  
V" \0Y0  
} *iBTI+"]  
H,3\0BKk  
} OJ|r6  
:}8Z@H!KkY  
SortUtil: ,l YE  
W!Hm~9fz  
package org.rut.util.algorithm; ^&@w$  
>@xrs  
import org.rut.util.algorithm.support.BubbleSort; EP'h@zdz  
import org.rut.util.algorithm.support.HeapSort; @hQlrq5c  
import org.rut.util.algorithm.support.ImprovedMergeSort; Q/uwQ o/  
import org.rut.util.algorithm.support.ImprovedQuickSort; g- AHdYJ  
import org.rut.util.algorithm.support.InsertSort; [qUN4x5b  
import org.rut.util.algorithm.support.MergeSort; }D411228  
import org.rut.util.algorithm.support.QuickSort; jp8@vdRg  
import org.rut.util.algorithm.support.SelectionSort; -i0(2*<  
import org.rut.util.algorithm.support.ShellSort; Un`^jw#_  
o8/ ;;*  
/** 4;n6I)&.(  
* @author treeroot ,YTIC8qKr  
* @since 2006-2-2 U$]|~41#  
* @version 1.0 vE@!{*  
*/ ~(!XY/0e  
public class SortUtil { f`9 b*wV  
public final static int INSERT = 1; 0sN.H=   
public final static int BUBBLE = 2; C2LL|jp*  
public final static int SELECTION = 3; An;MVA  
public final static int SHELL = 4; 5pr"d@.  
public final static int QUICK = 5; MYJg8 '[j  
public final static int IMPROVED_QUICK = 6; _v Sn`  
public final static int MERGE = 7; drzL.@h|  
public final static int IMPROVED_MERGE = 8; :I -V_4b  
public final static int HEAP = 9; \PDd$syDA  
NI#X @  
public static void sort(int[] data) { NH$r Z7$  
sort(data, IMPROVED_QUICK); \^ghdU  
} ]8q3>  
private static String[] name={ JlMT<;7\  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 7+X:LA~U  
}; 4wC+S9I#E^  
O"Ku1t!  
private static Sort[] impl=new Sort[]{ il|1a8M2~  
new InsertSort(), ~P~  
new BubbleSort(), M@ed>.  
new SelectionSort(), q0f3="  
new ShellSort(), ^O^l(e!3  
new QuickSort(), lY|Jr{+Ln  
new ImprovedQuickSort(), U2uF&6v  
new MergeSort(), 9Gv[ 8'I  
new ImprovedMergeSort(), *K> l*l(f]  
new HeapSort() =]:>"_jN  
}; GKN%Tv:D_  
!vG'J\*xc  
public static String toString(int algorithm){ WVVJ  
return name[algorithm-1]; f|O{#AC  
} o-}R?>  
$)3%U?AP  
public static void sort(int[] data, int algorithm) { O@p]KSfk  
impl[algorithm-1].sort(data); 311LC cRp  
} :Ad &$e g+  
t#q<n:WeYU  
public static interface Sort { D8 hr?:I9  
public void sort(int[] data); !rqF}d  
} /~x "wo  
EEGy!bff  
public static void swap(int[] data, int i, int j) { f B9;_z  
int temp = data; KII *az  
data = data[j]; 6iCrRjY*  
data[j] = temp; B6wRg8  
} | WvUq  
} D9j3Xu  
评价一下你浏览此帖子的感受

精彩

感动

搞笑

开心

愤怒

无聊

灌水
描述
快速回复

您目前还是游客,请 登录注册
欢迎提供真实交流,考虑发帖者的感受
认证码:
验证问题:
10+5=?,请输入中文答案:十五