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
  • 4908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。 ^2 H-_  
插入排序: m a@V>*u  
#qF 1z}L(  
package org.rut.util.algorithm.support; =Hn--DEMg  
/3^XJb$Sa  
import org.rut.util.algorithm.SortUtil; iymN|KdpaZ  
/** :aaX Y:<  
* @author treeroot |4 \2,M#  
* @since 2006-2-2 4r ~K`)/S'  
* @version 1.0 |ka/5o  
*/ 1W\wIj.  
public class InsertSort implements SortUtil.Sort{ ^VG].6  
1P1h);*Z  
/* (non-Javadoc) |39,n~"o&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -P|claO0  
*/ hDSf>X_*_G  
public void sort(int[] data) { Cd=$XJ-b  
int temp; 7}~w9jK"F  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); IvkYM`%  
} ::#[lw  
} N\Lu+ x5  
} .;Gx.}ITG6  
7=u Gf$/  
} +^esL9RG:  
{D..(f1*u  
冒泡排序: Ri_2@U-  
_6,\;"it?8  
package org.rut.util.algorithm.support; w|S b`eR  
3<M yb  
import org.rut.util.algorithm.SortUtil; (7b9irL&cn  
{'h&[f>zcQ  
/** v&/H6r#E.  
* @author treeroot |?{V-L  
* @since 2006-2-2 +y'2 h%>h[  
* @version 1.0 cAwqIihZ  
*/ ,"gPd!HD (  
public class BubbleSort implements SortUtil.Sort{ u=W[ S)w  
Dqc GzTz  
/* (non-Javadoc) D]*|Zmr+}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5VOw}{Pt  
*/ VY8cy2  
public void sort(int[] data) { Cm%I/4  
int temp; n&P~<2^M#  
for(int i=0;i for(int j=data.length-1;j>i;j--){ %~M*<pN  
if(data[j] SortUtil.swap(data,j,j-1); ;ZAwf0~  
} DW9MX`!Xc  
} o_mjI:  
} <dD!_S6@,  
} ~@l4T_,k  
hbvcIGaT  
} '1b)(IW  
9@ fSO<  
选择排序: ;UpJ_y)n8\  
GwP!:p|  
package org.rut.util.algorithm.support; WrDFbcH  
%!nN<%  
import org.rut.util.algorithm.SortUtil; d|Wqx7t]P  
]*mUc`  
/** p o)lN[v  
* @author treeroot ElB[k<  
* @since 2006-2-2 c"lwFr9x7  
* @version 1.0 T"za|Fo  
*/ W3>9GY90R  
public class SelectionSort implements SortUtil.Sort { V-go?b`  
F09%f"9  
/* |X A0F\  
* (non-Javadoc) fvH{ va.  
* R59iuHQ[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fw,,cu`YA  
*/ m{RXt  
public void sort(int[] data) { nM.g8d K  
int temp; [Z:P{yr  
for (int i = 0; i < data.length; i++) { inO;Uwlv  
int lowIndex = i; u1y>7,Z6W  
for (int j = data.length - 1; j > i; j--) { .|go$}Fk  
if (data[j] < data[lowIndex]) { p~8O6h@J  
lowIndex = j; j_}:=3  
} c,;VnZ 9wC  
} _^(1Qb[  
SortUtil.swap(data,i,lowIndex); t'At9<ib  
} y6d!?M(0U  
} 579D  
\WC,iA%Y  
} LkzA_|8:D  
e>e${\ =,  
Shell排序: XK/l1E3N  
j;y(to-e>D  
package org.rut.util.algorithm.support; u4xtlGt5  
4Ps;Cor+  
import org.rut.util.algorithm.SortUtil; zw+wq+2"  
Hqs-q4G$  
/** Fs4shrt  
* @author treeroot N_B^k8j  
* @since 2006-2-2 q|]CA  
* @version 1.0 W =Bw*o-  
*/ l\V1c90m  
public class ShellSort implements SortUtil.Sort{ BRY/[QRqZ  
-o"b$[sf=Z  
/* (non-Javadoc) WUz69o be  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0vSPeZ  
*/ }1k?th  
public void sort(int[] data) { *Us}E7/"'  
for(int i=data.length/2;i>2;i/=2){ 3$YbEl@#  
for(int j=0;j insertSort(data,j,i); 0<@['W}G  
} \rUKP""m  
} I|&DXF  
insertSort(data,0,1); T|BlFJ0"  
} -A<@Pg  
YV|_y:-  
/** A+dx7anUz  
* @param data |?^qs nB  
* @param j Ieq_XF]U  
* @param i :^{KY(3  
*/ z{1A x  
private void insertSort(int[] data, int start, int inc) { UTu~"uCR  
int temp; OwNM`xSa|\  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ySiZ@i4  
} YfT D  
} Z>y6[o  
} o*7NyiJ@z  
6U8esPs,  
} sj/k';#g  
Jv3G\9_  
快速排序:  C&qo$C  
1U/9=b  
package org.rut.util.algorithm.support; ju[y-am$/  
"wZvr}xk  
import org.rut.util.algorithm.SortUtil; 4FYV]p8f  
L#a!fd  
/** )O+Zbn  
* @author treeroot R8lja%+0$  
* @since 2006-2-2 ZoJq JWsd  
* @version 1.0 %$o[,13=  
*/ = )3\B  
public class QuickSort implements SortUtil.Sort{ )_j(NX-C:  
Wm"#"l4  
/* (non-Javadoc) zJ}abo6rVw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k.54lNl  
*/ nPI$<yW7F  
public void sort(int[] data) { N3#^Ifn[  
quickSort(data,0,data.length-1); 3D@3jyo:  
} 5p~5-_JX  
private void quickSort(int[] data,int i,int j){ p JF 9Z  
int pivotIndex=(i+j)/2; eA]8M^  
file://swap xqg4b{  
SortUtil.swap(data,pivotIndex,j); xWY\,'+Q  
kGnT4R*E  
int k=partition(data,i-1,j,data[j]); 1CZO+MB&"$  
SortUtil.swap(data,k,j); L|#0CRiN  
if((k-i)>1) quickSort(data,i,k-1); zq$L[ X  
if((j-k)>1) quickSort(data,k+1,j); +\ "NPK@3  
.7Yox1,  
} (r?hD*2r  
/** @IbZci)1  
* @param data > fV "bj.  
* @param i .6rbn8h  
* @param j W-r^ME  
* @return ^vSSG5  :  
*/ pV8tn!  
private int partition(int[] data, int l, int r,int pivot) { 5K?/-0yG  
do{ IOxtuR  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 5$:9nPAH  
SortUtil.swap(data,l,r); \5<Z[#{  
} ->;2CcpHB  
while(l SortUtil.swap(data,l,r); (AjgLNB  
return l; f0^s<:*  
} fsEQ4xN'  
a"O;DYh  
} p]y.N)a  
SfY 5Xgp  
改进后的快速排序: 32aI0CT  
Xe: ^<$z  
package org.rut.util.algorithm.support; !9r%d8!z  
abS~'r14  
import org.rut.util.algorithm.SortUtil; q6E 'W" Q  
,:K{  
/** 5"b1: w@  
* @author treeroot SFwY%2np)!  
* @since 2006-2-2 0'A"]6  
* @version 1.0 sxuP"4  
*/ OUwnVAZZ6  
public class ImprovedQuickSort implements SortUtil.Sort { [+A]E,pv]1  
9vDOSwU*  
private static int MAX_STACK_SIZE=4096; {=d}04i)E"  
private static int THRESHOLD=10; 2auJp .  
/* (non-Javadoc) lZIJ[.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $A,YQH+  
*/ WZ!zUUp}V  
public void sort(int[] data) { ^a /q6{  
int[] stack=new int[MAX_STACK_SIZE]; rzie_)a Y%  
2)$-L'YS  
int top=-1; jFKp~`/#  
int pivot; R64f0N K.  
int pivotIndex,l,r; 6)i>qz).  
m-~3c]pA  
stack[++top]=0; LTA0WgzR)  
stack[++top]=data.length-1; ,vMAX?c  
gWjr|m<  
while(top>0){ wmR~e  
int j=stack[top--]; ^@=4HtA  
int i=stack[top--]; lqrI*@>Tz  
 yoe@]c=  
pivotIndex=(i+j)/2; =5^1Bl  
pivot=data[pivotIndex]; GJS(  
wXnVQ-6H  
SortUtil.swap(data,pivotIndex,j); =tA;JB  
H ~fF; I  
file://partition 'ks  .TS&  
l=i-1; 6q`)%"4k  
r=j; WO!OaC?+B,  
do{ _ 3>E+9TQ  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); A{)pzV25  
SortUtil.swap(data,l,r); )'7Qd(4WT  
} Ke:EL;*8k  
while(l SortUtil.swap(data,l,r); qvWi;  
SortUtil.swap(data,l,j); eYkg4O'  
5"1wz  
if((l-i)>THRESHOLD){ _e8v12s  
stack[++top]=i; Hc|cA(9sh9  
stack[++top]=l-1; x2HISxg  
} PMbq5  
if((j-l)>THRESHOLD){ %Q}(.h%M  
stack[++top]=l+1; D-i, C~W  
stack[++top]=j; 6'uCwAQU  
} aYc<C$:NC"  
b-<@3N.9]  
} 726UO#*  
file://new InsertSort().sort(data); 3PLA*n+%  
insertSort(data); WLVkrTvX  
} 8a8D0}'  
/** <RC%<  
* @param data  Q3bU"f  
*/ WL,2<[)Ew  
private void insertSort(int[] data) { c 8Q2H  
int temp; w<]-~`K  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1!U:M8T|  
} jyyig%  
} Xj30bt  
} Y+$]N:\F\  
-jrAk  
} 5efN5Kt  
S fY9PNck\  
归并排序: %FqQ+0^  
t"J{qfNs  
package org.rut.util.algorithm.support; b *0uxvLu  
#< :`:@2  
import org.rut.util.algorithm.SortUtil; >X:!Y[N  
LLzxCMc9*  
/** UpSJ%%.n  
* @author treeroot Ijz*wq\s;  
* @since 2006-2-2 *M#L)c;6  
* @version 1.0 6;!)^b  
*/ #s>'IPc0  
public class MergeSort implements SortUtil.Sort{ o.zP1n|G~r  
4!96k~d}  
/* (non-Javadoc) Nq9M$Nt]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6r@>n_6LY  
*/ /<+`4n  
public void sort(int[] data) { ; 5[W*,7s  
int[] temp=new int[data.length]; z`Nss o=  
mergeSort(data,temp,0,data.length-1); $II ~tO  
} )~nieQEZQ  
=^{MyR7  
private void mergeSort(int[] data,int[] temp,int l,int r){ DNqC*IvuzM  
int mid=(l+r)/2; Fe: ~M?]  
if(l==r) return ; F)imeu  
mergeSort(data,temp,l,mid); (@^ySiU  
mergeSort(data,temp,mid+1,r); H;tE=  
for(int i=l;i<=r;i++){ \K%M.>]vq  
temp=data; 1L7^g*  
} :Zob"*T  
int i1=l; 6<5:m:KE  
int i2=mid+1; ln , 9v  
for(int cur=l;cur<=r;cur++){ v7#|%  
if(i1==mid+1) G7-k ,P^  
data[cur]=temp[i2++]; ,BGUIu6  
else if(i2>r) o#z$LT1dY  
data[cur]=temp[i1++]; tW-[.Y -M,  
else if(temp[i1] data[cur]=temp[i1++]; w"QZ7EyJ  
else 4qsxlN>4O  
data[cur]=temp[i2++]; 0u( 0*Xl  
} *0V'rH)  
} Y2dml!QM  
 <|82)hO  
} ,jw`9a  
*O[/- p&7  
改进后的归并排序: Zvfy%k   
O%F*i2I:+k  
package org.rut.util.algorithm.support; )4:]gx#cr  
<1* \ ~CX  
import org.rut.util.algorithm.SortUtil; R4k+.hR  
Q uw|KL  
/** Vwjic2lGI  
* @author treeroot KPjAk  
* @since 2006-2-2 BxQ,T@  
* @version 1.0 \>n[x; $  
*/ VTyj<6Y  
public class ImprovedMergeSort implements SortUtil.Sort { 31e O2|7  
yxf #@Je"  
private static final int THRESHOLD = 10; 4UzXTsjM7  
>w.%KVBJ  
/* 9!Xp+<  
* (non-Javadoc) Cp>y<C"  
* !su773vo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =i Dd{$  
*/ Bx$?*y&f!v  
public void sort(int[] data) { UM]3MS:[  
int[] temp=new int[data.length]; TGPZUyi3!=  
mergeSort(data,temp,0,data.length-1); mV4gw'.;7  
} D~M R)z_p~  
[EZ=tk  
private void mergeSort(int[] data, int[] temp, int l, int r) { Y(?SE< 4R  
int i, j, k; |68/FJZ,5  
int mid = (l + r) / 2; -O-?hsV)y  
if (l == r) ObS#aRq  
return; &uBf sa$  
if ((mid - l) >= THRESHOLD) B8.}9  
mergeSort(data, temp, l, mid); a+a6P5kJ  
else /nX_Q?mo  
insertSort(data, l, mid - l + 1); IX<9_q  
if ((r - mid) > THRESHOLD) :7dc;WdM  
mergeSort(data, temp, mid + 1, r); '}bmDb*  
else &o1k_!25  
insertSort(data, mid + 1, r - mid); V*Xr}FE  
)"6"g9A  
for (i = l; i <= mid; i++) { 1cRF0MI  
temp = data; e+VE FWz  
} h9iQn<lp4.  
for (j = 1; j <= r - mid; j++) { 5tZ0zr  
temp[r - j + 1] = data[j + mid]; ,\#s_N 7  
} cN&:V2,  
int a = temp[l]; C|3cQ{  
int b = temp[r]; -:J<JX)o  
for (i = l, j = r, k = l; k <= r; k++) { 72*j6#zS  
if (a < b) { KMQPA>w#  
data[k] = temp[i++]; eL}X().  
a = temp; `P*BW,P'T  
} else { BS?$eai@:9  
data[k] = temp[j--]; bz~aj}"`  
b = temp[j]; [/ertB  
}  y}|E)  
} I Xm[c@5l  
} $% gz, {  
.n)R@&9  
/** ue'dI   
* @param data I'p+9H$  
* @param l ozl!vf# kv  
* @param i ;vX1U8  
*/  M}@>h  
private void insertSort(int[] data, int start, int len) { |k%1mE(+=s  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ;)P=WS:=  
} X')l04P@%  
} 8Djki]  
} DQ[7p(  
} O/d]2<V  
suGd&eP|  
堆排序: _Rk vg-  
dn Sb}J  
package org.rut.util.algorithm.support; f\.y z[  
]+B.=mO_  
import org.rut.util.algorithm.SortUtil; ^W@%(,xb  
(~E-=+R[$&  
/** z5Tsu1 c  
* @author treeroot t+]1D@hv  
* @since 2006-2-2 H=g%>W%3  
* @version 1.0 b0f6p>~q^  
*/ C8|#  
public class HeapSort implements SortUtil.Sort{ :eJJL,v  
[/VpvQ'  
/* (non-Javadoc) X-,oL.:c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RO%M9LISI  
*/ !y'>sAf  
public void sort(int[] data) { Ht\2 IP  
MaxHeap h=new MaxHeap(); "Jg.)1Jw  
h.init(data); 9PV+Kr!c5I  
for(int i=0;i h.remove(); k_zn>aR$F  
System.arraycopy(h.queue,1,data,0,data.length); 4gNN "  
} J]{<Z?%  
z,2*3Be6V  
private static class MaxHeap{ $ Y^0l  
p4UEhT  
void init(int[] data){ e5n]@mu%  
this.queue=new int[data.length+1]; <m VFC  
for(int i=0;i queue[++size]=data; 3 v.8  
fixUp(size); V3r)u\ o'  
} n00J21  
} _<Ij)#Rq7  
>D}|'.&  
private int size=0; Q .h.d))  
$?]`2*i  
private int[] queue; B$x@I\(M  
i'"#{4I  
public int get() { Rt&5s)O'  
return queue[1]; y@1QVt04  
} /93z3o7D>  
gH\>", [  
public void remove() { 748:* (O  
SortUtil.swap(queue,1,size--); HpfZgkC+  
fixDown(1); H)"]I3  
} vD?D]8.F~Q  
file://fixdown $e--"@[Y  
private void fixDown(int k) { z/f._Z(  
int j; Ak kF6d+  
while ((j = k << 1) <= size) { q5z^y(Sv  
if (j < size %26amp;%26amp; queue[j] j++; 4\*:Lc,-  
if (queue[k]>queue[j]) file://不用交换 w\eC{,00:  
break; /4c`[  
SortUtil.swap(queue,j,k); 4Y2I'~'  
k = j; ^H1m8=  
} -o`K/f}d  
} QJrXn6`  
private void fixUp(int k) { y"'p#j  
while (k > 1) { KF1iYo>p  
int j = k >> 1; [)GRP  
if (queue[j]>queue[k]) -$0}rfX  
break; ?~t5>PEonv  
SortUtil.swap(queue,j,k); I2*(v%.-  
k = j; _X;,,VEV!  
} ZeU){CB  
} SOM? 0.  
T#E$sZ  
} YGLq ~A  
k3@d = k  
} i$@xb_  
D6&P9e_5  
SortUtil: ]BjY UTNm  
HQ" trV  
package org.rut.util.algorithm; }zsIp,  
. _|=Btoo  
import org.rut.util.algorithm.support.BubbleSort; L8f+uI   
import org.rut.util.algorithm.support.HeapSort; -s`Wd4AP  
import org.rut.util.algorithm.support.ImprovedMergeSort; 0Ui_Trlc  
import org.rut.util.algorithm.support.ImprovedQuickSort; ecJjE 56P  
import org.rut.util.algorithm.support.InsertSort; 1hgIR^;[b  
import org.rut.util.algorithm.support.MergeSort; ,pdzi9@=t  
import org.rut.util.algorithm.support.QuickSort; &y=OZ !M  
import org.rut.util.algorithm.support.SelectionSort; 3%1wQXr0  
import org.rut.util.algorithm.support.ShellSort; A46q`l9B  
jdu6P+_8n  
/** lnyq%T[^  
* @author treeroot  R.HvqO  
* @since 2006-2-2 qCfEv4  
* @version 1.0 (@xC-*  
*/ 3ej237~F,L  
public class SortUtil { )e`9U.C  
public final static int INSERT = 1; ;nW;M 4{  
public final static int BUBBLE = 2; R3lZ|rxv:  
public final static int SELECTION = 3; Y,Z$U| U  
public final static int SHELL = 4; stUv!   
public final static int QUICK = 5; hLgX0QV  
public final static int IMPROVED_QUICK = 6; `^hA&/1  
public final static int MERGE = 7; :.XlAQR~b  
public final static int IMPROVED_MERGE = 8;  ~,&8)1  
public final static int HEAP = 9; o4EY2  
]w;t0Bk  
public static void sort(int[] data) { 5 0-7L,  
sort(data, IMPROVED_QUICK); tugIOA  
} -bOtF%  
private static String[] name={ CkNR{?S  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" yx-"&K=`  
}; :LNZC,-f}5  
U2<q dknB  
private static Sort[] impl=new Sort[]{ H+Bon=$cE!  
new InsertSort(),  =5B5  
new BubbleSort(), [#Gu?L_W  
new SelectionSort(), *K$a;2WjzG  
new ShellSort(), qg`ae  
new QuickSort(), Zn r4^i&(  
new ImprovedQuickSort(), 6:B,ir _  
new MergeSort(), ]J!#"m-]  
new ImprovedMergeSort(), Qu=b-9  
new HeapSort() }(Fmr7%m  
}; ?;`GCE  
?zutU w/m  
public static String toString(int algorithm){ *v K~t|z  
return name[algorithm-1]; a BMV6'  
} S$fS|N3]%  
jFe8s@7  
public static void sort(int[] data, int algorithm) { vvxD}p=y  
impl[algorithm-1].sort(data); L v/}&'\(  
} u;rmqo1  
RS}_cm0  
public static interface Sort { l{C]0^6>i  
public void sort(int[] data); XfVdYmii  
} YQ d($  
fcF|m5  
public static void swap(int[] data, int i, int j) { C za }cF  
int temp = data; k`N*_/(|n  
data = data[j]; ">1wPq&  
data[j] = temp; M *3G  
} %pOz%v~  
} SWI\;:k  
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
温馨提示:欢迎交流讨论,请勿纯表情、纯引用!
认证码:
验证问题:
3+5=?,请输入中文答案:八 正确答案:八