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
  • 8506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。 =eU=\td^  
插入排序: V&nB*U&s"  
SZ9Oz-?  
package org.rut.util.algorithm.support; >^jBE''  
$45|^.b  
import org.rut.util.algorithm.SortUtil; X+XDfEt:Q  
/** -K =.A* }  
* @author treeroot \DQu!l@1U  
* @since 2006-2-2 @Z ==B%`  
* @version 1.0 1Q(KZI  
*/ mufGv%U2  
public class InsertSort implements SortUtil.Sort{ o{,I O!q  
,XEIg  
/* (non-Javadoc) FprdP*/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]{6/6jl  
*/ 6~%><C  
public void sort(int[] data) { ? ;CIS$$r  
int temp; TUnAsE/J&  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 'cpm 4mT  
} w<`0D)mQ  
} I2$DlEke  
} \ T#|<=  
K`K v.4  
} W:RjWn@<  
2~$S @c  
冒泡排序: :lB`K>)iB}  
j J{F0o  
package org.rut.util.algorithm.support; 3O2G+G2  
rH`\UZ{cc  
import org.rut.util.algorithm.SortUtil; ] H !ru  
940:NOgm  
/** PG63{  
* @author treeroot i;1pw_K  
* @since 2006-2-2 'z"vk  
* @version 1.0 /Y y)=~t{  
*/ @\?ub F  
public class BubbleSort implements SortUtil.Sort{ hE {";/}J  
QGuqV8 y0  
/* (non-Javadoc) "Wg,]$IvU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q* R}yt5  
*/ x8@ 4lxj  
public void sort(int[] data) { + kKanm[!v  
int temp; n\((#<&  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 1@L18%h  
if(data[j] SortUtil.swap(data,j,j-1); n/5T{NfG  
} O.B9w+G=  
} 2/ 4zg  
} t <` As6}  
} 1;(h0j  
JW[6 ^Rw  
} 6NX#=A  
Gf"TI:xa  
选择排序: (s;W>,~q  
U~][ ph  
package org.rut.util.algorithm.support; %cSx`^`6j  
~Q_7HJ=^$  
import org.rut.util.algorithm.SortUtil; X3}eq|r9  
cOV9g)7^O  
/** c},pu[nL  
* @author treeroot 5FR#CQ  
* @since 2006-2-2 3Tu]-.  
* @version 1.0 ;|vP|Xi  
*/ HQP.7.w7 5  
public class SelectionSort implements SortUtil.Sort { Li6|c*K'  
=\.*CY|;N  
/* G*N[tw  
* (non-Javadoc) `Qo37B2  
* j $q5m 24L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~wDXjn"U&  
*/ &NBH'Rt  
public void sort(int[] data) { BEaF-*?A  
int temp; yIKpyyC9H  
for (int i = 0; i < data.length; i++) { _!o8s%9be  
int lowIndex = i; 'w=|uE {^  
for (int j = data.length - 1; j > i; j--) { !0@4*>n  
if (data[j] < data[lowIndex]) { :*KTpTa  
lowIndex = j; )K{s^]Jp  
} )9`HO?   
} |;US)B8}*Z  
SortUtil.swap(data,i,lowIndex); ~".@mubt1$  
} I.3~ctzu  
} V,rc&97  
-E?:W`!  
} o^~ZXF}  
5\pS8<RJ;  
Shell排序: Xeq9Vs zg  
<Ja&z M  
package org.rut.util.algorithm.support; eI:[o  
gF p3=s0~  
import org.rut.util.algorithm.SortUtil; YAc:QVT87  
lq:q0>vyI  
/** 'UsR/h5T  
* @author treeroot f8lyH'z0 @  
* @since 2006-2-2 M v (Pp  
* @version 1.0 b 5|*p(7[  
*/ D@La-K*5  
public class ShellSort implements SortUtil.Sort{ 'l^Bb#)"  
+JtKVF  
/* (non-Javadoc) Cw(e7K7&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Sn*s@RE\s  
*/ ,pD sU@  
public void sort(int[] data) { 6#U~>r/  
for(int i=data.length/2;i>2;i/=2){ ,<L4tp+y0  
for(int j=0;j insertSort(data,j,i); z]N#.utQ  
} Jt5V{9:('  
} `e,}7zGR  
insertSort(data,0,1); F[}#7}xjA  
} oUnb-,8n  
twr{jdY9  
/** J-<P~9m~I  
* @param data ~JT2el2W7p  
* @param j clU ?bF~e1  
* @param i G K~A,Miqk  
*/ r7W.}n*  
private void insertSort(int[] data, int start, int inc) { Q(f0S  
int temp; :'bZ:J>f  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); =7+%31  
} :Ob4WU  
} qR cSB  
} S Q:H2vvD  
x,^-a  
} ^rfR<Q`  
enPtW  
快速排序: !LH;K  
lx2#C9L_  
package org.rut.util.algorithm.support; p'LLzc##  
g sm%4>sc  
import org.rut.util.algorithm.SortUtil; R8[VD iM6E  
/UunWZ u%  
/** &C MBTY#u  
* @author treeroot qWW\d' , .  
* @since 2006-2-2 PWS8Dpb  
* @version 1.0 H'3 pHb  
*/ S=P}Jpq?Y;  
public class QuickSort implements SortUtil.Sort{  _:\rB  
Q(<A Yu  
/* (non-Javadoc) 'G65zz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dsw^$R}   
*/ E&J<qTH9  
public void sort(int[] data) { G)~>d/  
quickSort(data,0,data.length-1); 4Vi*Qa_,y  
} =b$g_+  
private void quickSort(int[] data,int i,int j){ LIG@`  
int pivotIndex=(i+j)/2; EC$F|T0f  
file://swap h:bx0:O"  
SortUtil.swap(data,pivotIndex,j); 4OM ]8I!  
\ R}I4'  
int k=partition(data,i-1,j,data[j]); yI8 O#  
SortUtil.swap(data,k,j); BD]J/o  
if((k-i)>1) quickSort(data,i,k-1); ^e^-1s  S  
if((j-k)>1) quickSort(data,k+1,j); P4"BX*x  
4}D&=0IZ  
} e6'0g=Y#   
/** =?Ry,^=b  
* @param data S".|j$  
* @param i \68bXY.  
* @param j DOtz  
* @return prO&"t >  
*/ K @&c  
private int partition(int[] data, int l, int r,int pivot) { "8a V~]~Dj  
do{ e?(4lD)d  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); t@lTA>;U@  
SortUtil.swap(data,l,r); v89tV9O)  
} c)Q-yPMl)  
while(l SortUtil.swap(data,l,r); dW/(#KP/+  
return l; :Hitx  
} w`boQ_Ir  
*9KT@"v  
} g#{7qmM  
w,6gnO  
改进后的快速排序: Ld:-S,2  
}6u}?>S  
package org.rut.util.algorithm.support; s;<]gaonB_  
8}oe))b  
import org.rut.util.algorithm.SortUtil; ^,'KmZm=  
NB3+kf,  
/** agoMsxI9  
* @author treeroot }cW8B"_"  
* @since 2006-2-2 A\/DAVnI  
* @version 1.0 <!W9E M  
*/ =`}|hI   
public class ImprovedQuickSort implements SortUtil.Sort { j bOwpyH  
V:D?i#%,z  
private static int MAX_STACK_SIZE=4096; ,!AYeVq  
private static int THRESHOLD=10; 5#_GuL%  
/* (non-Javadoc) V+' zuX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !Y^B{bh  
*/ _B 4 N2t$  
public void sort(int[] data) { L eUp!  
int[] stack=new int[MAX_STACK_SIZE]; gv jy'Rm  
>0N$R|B&  
int top=-1; L!5="s[}  
int pivot; K#v@bu:'  
int pivotIndex,l,r; sN[<{;K4  
LD|T1 .  
stack[++top]=0; jRk1Iu|7  
stack[++top]=data.length-1; ywjD.od"v  
4}Os>M{k  
while(top>0){ >4lA+1JYk  
int j=stack[top--]; ] C_$zbmi  
int i=stack[top--]; /#x0?d {5  
4GJx1O0Ol  
pivotIndex=(i+j)/2; ^7kYG7/  
pivot=data[pivotIndex]; -k,}LJjo  
D#ED?Lqf  
SortUtil.swap(data,pivotIndex,j); PVq y\i  
#R= 6$  
file://partition g>?,,y6/w  
l=i-1; &fxyY (  
r=j; cpq0' x\  
do{ ]x_14$rk  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); oe_,q&e  
SortUtil.swap(data,l,r); Q `h@-6N  
} 8 =3#S'n  
while(l SortUtil.swap(data,l,r); [HRP&jr  
SortUtil.swap(data,l,j); SsL>K*t5  
r)w]~)8  
if((l-i)>THRESHOLD){ ,-1taS  
stack[++top]=i; }WNgKw  
stack[++top]=l-1; I} ]s(  
} oM}P Wf-  
if((j-l)>THRESHOLD){ / vzwokH  
stack[++top]=l+1; 6:bvq?5a5  
stack[++top]=j; xtS0D^  
} Zg;Ht  
bu\D*-  
} g;nPF*(  
file://new InsertSort().sort(data); ?P2 d 9b  
insertSort(data); `t #I e *  
} sgeME^v  
/** @ao Hz8K  
* @param data Q0_|?]v  
*/ {<^PYN>`  
private void insertSort(int[] data) { -QydUr/(o  
int temp; J}&xS<  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }~Y#N  
} (Bfy   
} #w]:<R^  
} L5>.ku=T  
?37Kc,o  
} | )R{(AK-  
SJI+$L\'  
归并排序: ki_Py5  
L}U fd >*  
package org.rut.util.algorithm.support; FBK6{rLMc  
g~=#8nJ  
import org.rut.util.algorithm.SortUtil; ZTSNM)f  
itIzs99j  
/** !xh.S#B  
* @author treeroot X5D}<J2"  
* @since 2006-2-2 mH} 1Zy  
* @version 1.0 owc#RW9 7  
*/ Ke+#ww  
public class MergeSort implements SortUtil.Sort{ [L@ vC>G  
i50^%,  
/* (non-Javadoc) {e8.E<f-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p2~MJ LK4  
*/ j_*#"}Lcp  
public void sort(int[] data) { 0dgp<  
int[] temp=new int[data.length]; sjV>&eb  
mergeSort(data,temp,0,data.length-1); %t^-Guz  
} gaw/3@  
BI-xo}KI  
private void mergeSort(int[] data,int[] temp,int l,int r){ pTlNJ!U>  
int mid=(l+r)/2; H-o>| C  
if(l==r) return ; xTW$9>@\m  
mergeSort(data,temp,l,mid); r9uuVxBD  
mergeSort(data,temp,mid+1,r); dRXF5Ox5K}  
for(int i=l;i<=r;i++){ PNn{Rt  
temp=data; {?' DZR s  
} 2!b+}+:  
int i1=l; -HU5E>xG  
int i2=mid+1; F+!K9(`|  
for(int cur=l;cur<=r;cur++){ ,9W|$2=F  
if(i1==mid+1) G-]ndrTn  
data[cur]=temp[i2++]; n`krK"Ii  
else if(i2>r) d&QB?yLd  
data[cur]=temp[i1++]; B6iH[dTy_  
else if(temp[i1] data[cur]=temp[i1++]; @m[r0i0J"  
else -%lA=pS{Fq  
data[cur]=temp[i2++]; 'Bp7LtG92  
} Vn-y<*np  
} ;V~[kF=t0  
c _li.]P  
} \ueo^p]_?  
Q9 b.]W  
改进后的归并排序: E1'HdOh&z  
gSP]& _9j  
package org.rut.util.algorithm.support; 6WQT,@ ?  
-Fe) )Y'=  
import org.rut.util.algorithm.SortUtil; 2R2ws.}  
{re<S<j&  
/** lV-b   
* @author treeroot `r:n[N=Y&  
* @since 2006-2-2 ShdE!q7  
* @version 1.0 ;{79d8/=  
*/ tB_GEt2M  
public class ImprovedMergeSort implements SortUtil.Sort { ^b]h4z$  
"+iPeRF!hU  
private static final int THRESHOLD = 10; "RH pj3 si  
Uv~r]P)  
/* Y9)uy 8c  
* (non-Javadoc) %OeA"#  
* db%o3>>e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]4m;NId  
*/ ;x*_h  
public void sort(int[] data) { ~5[#c27E9  
int[] temp=new int[data.length]; |#);^z_  
mergeSort(data,temp,0,data.length-1); +pcpb)VL  
} dMw0Aw,2]8  
h|tdK;)  
private void mergeSort(int[] data, int[] temp, int l, int r) { ) N*,cTE  
int i, j, k; 0L_ JP9e  
int mid = (l + r) / 2; O9#8%p% )  
if (l == r) $ \j/s:Y  
return; G'oMZb ({=  
if ((mid - l) >= THRESHOLD) 6px(]QU  
mergeSort(data, temp, l, mid); 0>?%{Xy  
else :d v{'O  
insertSort(data, l, mid - l + 1); d7.}=E.L  
if ((r - mid) > THRESHOLD) ^u@"L  
mergeSort(data, temp, mid + 1, r); {2EIvKu3:  
else )a ov]Ns  
insertSort(data, mid + 1, r - mid); FA}dKE=c Q  
;by` [)  
for (i = l; i <= mid; i++) { V7Z+@e-5  
temp = data; Em?Z  
} ' XJ>;",[  
for (j = 1; j <= r - mid; j++) { |'B-^?;  
temp[r - j + 1] = data[j + mid]; hSQuML   
} #)&kF+  
int a = temp[l]; mhZ{}~  
int b = temp[r]; 9?5'>WO  
for (i = l, j = r, k = l; k <= r; k++) { b*w@kLLN  
if (a < b) { ?6;9r[ p  
data[k] = temp[i++]; W_:3Sj l'  
a = temp; }w{ 6Ua  
} else { [&e|:1  
data[k] = temp[j--]; >?/Pl"{b  
b = temp[j]; cn62:p]5  
} m5c?A+@fZ  
} % ~eIx=s  
} tI42]:z  
-? _#Yttu  
/** AI{Tw>hZ  
* @param data ;m<22@,E&  
* @param l d <{ >&  
* @param i {t<E*5N]a  
*/ ~:`5Y"Av:  
private void insertSort(int[] data, int start, int len) { EDQKbTaPt  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); v?Z30?_&h  
} F xek#  
} |$*1!pL-QP  
} d??;r:  
} dwd5P7  
#|<\q*<  
堆排序: ME.l{?v  
kj_MzgC'?  
package org.rut.util.algorithm.support;  .dA_}  
~m:oJ+:O  
import org.rut.util.algorithm.SortUtil; (}Q(Ux@X  
_ebo  
/** 0,b.;r  
* @author treeroot vO>Fj  
* @since 2006-2-2 ,sw|OYb  
* @version 1.0 ;gS)o#v0  
*/ YfRjr  
public class HeapSort implements SortUtil.Sort{ t1Ty.F)r  
nHAET  
/* (non-Javadoc) eh\_;2P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /V-uo(n< .  
*/ {zd0 7!9y  
public void sort(int[] data) { O+iNR9O  
MaxHeap h=new MaxHeap(); ''t\J^+&  
h.init(data); bSa%?laS  
for(int i=0;i h.remove(); } Xbmb8  
System.arraycopy(h.queue,1,data,0,data.length); j<"@ Y7  
} /e/%mo  
k P]'  
private static class MaxHeap{ _}bs0 kIz  
 cs+;ijp  
void init(int[] data){ b |SDg%e  
this.queue=new int[data.length+1]; Q]/ZVcoqo  
for(int i=0;i queue[++size]=data; s fD@lW3  
fixUp(size); S vTd#>ke  
} ~Up5+7k@  
} -!o*A>N  
Pz\4#E]  
private int size=0; (G1KMy  
8jBrD1  
private int[] queue; olm0O  (9  
f.yvKi.Cm  
public int get() { k^VL{z:EWB  
return queue[1]; Q$Q>pV;uH  
} `$PdI4~J  
]rNM3@bVy  
public void remove() { v11Uw?CM  
SortUtil.swap(queue,1,size--); !uZ)0R  
fixDown(1); >X@4wP 7l  
} "SMRvi57T  
file://fixdown hFMJDGCw>Q  
private void fixDown(int k) { ke2zxX2 f  
int j; ;H' ,PjU  
while ((j = k << 1) <= size) { _*l+ze[a  
if (j < size %26amp;%26amp; queue[j] j++; >H r&F nh+  
if (queue[k]>queue[j]) file://不用交换 ~ 3!yd0 [k  
break; hs;YMUA"  
SortUtil.swap(queue,j,k); Rb/|ae  
k = j; NqlU?  
} _xWX/1DY  
} Ez1-Nx  
private void fixUp(int k) { ylGT9G19  
while (k > 1) { ?^3Y+)}  
int j = k >> 1; KPi_<LuK  
if (queue[j]>queue[k]) ?4`f@=}'K  
break; ;B^ 9sr  
SortUtil.swap(queue,j,k); nyoLrTs{  
k = j; '048Qykt;  
} t6q7 w  
} tZXq<k9  
(Sv=R(_s  
} ;W 3#q:  
H\%^n<]#  
} "g5<jp  
y&n-8L_  
SortUtil: 5)c B\N1u  
Lo<WK  
package org.rut.util.algorithm; ?]%ZJd  
i,h)V Cc  
import org.rut.util.algorithm.support.BubbleSort; T^ )\  
import org.rut.util.algorithm.support.HeapSort; m$.7) 24  
import org.rut.util.algorithm.support.ImprovedMergeSort; SuR+Vv  
import org.rut.util.algorithm.support.ImprovedQuickSort; d53Eu`QW?  
import org.rut.util.algorithm.support.InsertSort; w#d7  
import org.rut.util.algorithm.support.MergeSort; !U7}?i&H  
import org.rut.util.algorithm.support.QuickSort; sC'PtFK8z  
import org.rut.util.algorithm.support.SelectionSort; ).32Im!;#R  
import org.rut.util.algorithm.support.ShellSort; >6KwZr BB  
aCRiW;+'  
/** #Zg pm"MW  
* @author treeroot ~hxW3e  
* @since 2006-2-2 YB+My~fw{l  
* @version 1.0 2!)|B ;y  
*/  ^:^  
public class SortUtil { Vl^p3f[  
public final static int INSERT = 1; 3^Q;On|  
public final static int BUBBLE = 2;  l( WF  
public final static int SELECTION = 3; 6fm oI K{  
public final static int SHELL = 4; F! [Gj%~I  
public final static int QUICK = 5; 8kf5u#,'  
public final static int IMPROVED_QUICK = 6; V8O-|7H$ v  
public final static int MERGE = 7; Eo`'6 3  
public final static int IMPROVED_MERGE = 8; V.e30u5  
public final static int HEAP = 9; 5yL\@7u`  
g [u*`]-;v  
public static void sort(int[] data) { 03n+kh  
sort(data, IMPROVED_QUICK); {^.q6,l  
} r,<p#4(>_  
private static String[] name={ W5uC5C*,l  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" bXz*g`=;  
}; _<6E>"*m  
hRQw]  
private static Sort[] impl=new Sort[]{ $ghlrV;:ct  
new InsertSort(), b:PzqMh{G  
new BubbleSort(), B un^EJ)  
new SelectionSort(), e>UU/Ks  
new ShellSort(), ~}_S]^br  
new QuickSort(), Sa-" G`  
new ImprovedQuickSort(), F AQx8P  
new MergeSort(), i'B$Xr  
new ImprovedMergeSort(), Ou_2UT  
new HeapSort() Obx!>mI^6  
}; @rv)J[7Y&  
F]L96&  
public static String toString(int algorithm){ ?BX}0RWMh7  
return name[algorithm-1]; m f\tMik<  
} nKmf#  
L=@8Z i!2<  
public static void sort(int[] data, int algorithm) { )+Yu7=S  
impl[algorithm-1].sort(data); |&MO us#v  
} * qJHoP;  
b5#Jo2C`AJ  
public static interface Sort { lot;d3}  
public void sort(int[] data); YIs_.CTi  
} b w!  
l>T]Y  
public static void swap(int[] data, int i, int j) { v"*c\,  
int temp = data; Y 8-;eqH  
data = data[j]; O YfRtfE  
data[j] = temp; w!b;.l  
} E&ReQgBft  
} -nZDFC8y$  
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
批量上传需要先选择文件,再选择上传
认证码:
验证问题:
10+5=?,请输入中文答案:十五