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
  • 6682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。 (kv?33  
插入排序: v'!a\b`9  
N$>^g"6 o  
package org.rut.util.algorithm.support; aj^wRzJ}zA  
P!G858V(  
import org.rut.util.algorithm.SortUtil; <{5EdX  
/** _Q[$CcDEE  
* @author treeroot QX4ai3v  
* @since 2006-2-2 ar9]"s+'  
* @version 1.0 ;r[@v347  
*/ HlvuW(,x=  
public class InsertSort implements SortUtil.Sort{ W2FD+ wt  
_tTNG2  
/* (non-Javadoc) *z*uEcitW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c2t=_aAIPQ  
*/ j>-gO,v, y  
public void sort(int[] data) { 4%nE*H%  
int temp; q@t0NvNSu  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )G^ KDj"  
} ="wzq+U  
} y*pUlts<  
} l*\y  
PYbVy<xc  
} i0$Bx>  
u_(VEfs4  
冒泡排序: li~d?>  
I M-L'9  
package org.rut.util.algorithm.support; (3J$>Na  
Szbb_i{_ `  
import org.rut.util.algorithm.SortUtil; }J">}j]/  
TJ q~)Bm  
/** aT>'.*\]  
* @author treeroot (q+)'H%iK  
* @since 2006-2-2 OxI/%yv-c  
* @version 1.0 5[0 O'%$  
*/ y{dTp  
public class BubbleSort implements SortUtil.Sort{ =  C4  
EkgE_8  
/* (non-Javadoc) &e 6CJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W`\R%>$H  
*/ C{gyj}5  
public void sort(int[] data) { ?7<JQh)"e  
int temp; Zjbc3 M5  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 3)\8%Ox  
if(data[j] SortUtil.swap(data,j,j-1); =|3fs7  
} *%{gYpn  
} <B9C*M"4%  
} *s9C!w YMZ  
} uwz)($~bp  
<Utnz)  
} }VS5gxI1.  
K+;e4_\  
选择排序: N"nd*?  
oD<kMK  
package org.rut.util.algorithm.support; JSW^dw&  
yE}}c{hSn  
import org.rut.util.algorithm.SortUtil; ~//fN}~R  
{}3${  
/** !O`(JSoG  
* @author treeroot dZi"$ g  
* @since 2006-2-2 0T Q$C-%  
* @version 1.0 (h >-&.`&  
*/ (M*FIX  
public class SelectionSort implements SortUtil.Sort { U}[I   
5$V_Hj  
/* MyT q  
* (non-Javadoc) ZosP(Tdq  
* .Fdgb4>BXX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N[s}qmPha  
*/ 0q&<bV:D  
public void sort(int[] data) { =EHUR'  
int temp; ^J$2?!~  
for (int i = 0; i < data.length; i++) { G1vNt7  
int lowIndex = i; 6@rMtQfI  
for (int j = data.length - 1; j > i; j--) { XUz3*rfs  
if (data[j] < data[lowIndex]) { bD/~eIcWL  
lowIndex = j; 3AU;>D^5  
} Kx>qz.wwI?  
} Pi]19boM.  
SortUtil.swap(data,i,lowIndex); xai*CY@cQ  
} _f$^%?^  
} YB-h.1T-  
;M)QwF1  
} z6*X%6,8  
r"P|dlV-  
Shell排序: FoN|i"*l  
;lHr =e7  
package org.rut.util.algorithm.support; -[cTx[Z,  
tfj:@Z5&$C  
import org.rut.util.algorithm.SortUtil; Qk:Y2mL  
8fl`r~bqZ  
/** wne,e's}   
* @author treeroot LDPUD'  
* @since 2006-2-2 `aciXlqIF  
* @version 1.0 Lm%:K]X  
*/ '<"s \,  
public class ShellSort implements SortUtil.Sort{ G3Z)Z) N  
%J+E/  
/* (non-Javadoc) KrQ1GepJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  # 1OOU  
*/ SLa>7`<Q  
public void sort(int[] data) { <g$~1fa  
for(int i=data.length/2;i>2;i/=2){ U|jSa,}  
for(int j=0;j insertSort(data,j,i); 4 o Fel.o  
} h&KO<>  
} j0oR) du  
insertSort(data,0,1); k$blEa4  
} sB7# ~p A  
Zy`m!]G]80  
/** h1de[q)  
* @param data 16 =sij%A  
* @param j Sc;BCl{=|  
* @param i 4K\G16'$v  
*/ 8Vr%n2M  
private void insertSort(int[] data, int start, int inc) { o~`/_ +  
int temp; nLXlU*ES  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); fdFo#P  
} `sn^ysp  
} 4h|c<-`>t  
} k>;`FFQU>  
X $jWo@  
} ZOh`(})hy  
QIG$z?  
快速排序: EJMM9(DQ7  
0XE4<U   
package org.rut.util.algorithm.support; eA2@Nkw~)  
ofm#'7P 0  
import org.rut.util.algorithm.SortUtil; -|$@-fY;  
rC5 p-B%  
/** ,E S0NA  
* @author treeroot C5o#i*|  
* @since 2006-2-2 Y]'Z7<U}*E  
* @version 1.0 Va"0>KX  
*/ <^#,_o,!  
public class QuickSort implements SortUtil.Sort{ ;U/&I3dzV  
ag [ZW  
/* (non-Javadoc) akp-zn&je  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =$'6(aDH  
*/ :CG`t?N9M  
public void sort(int[] data) { ldU?{o:\s  
quickSort(data,0,data.length-1); h4fJvOk|!  
} p`olCp'  
private void quickSort(int[] data,int i,int j){ y0L_"e/  
int pivotIndex=(i+j)/2; c"f-3kFv  
file://swap 6' k<+IR  
SortUtil.swap(data,pivotIndex,j); b RFLcM  
y%"{I7!A  
int k=partition(data,i-1,j,data[j]); DX#Nf""Pw  
SortUtil.swap(data,k,j); <cps2*'  
if((k-i)>1) quickSort(data,i,k-1); dqU~`b9  
if((j-k)>1) quickSort(data,k+1,j); we;-~A5J  
+}Dw3;W}m  
} xQ7l~O b  
/** fDv2JdiU  
* @param data V5+=e^pa2  
* @param i s}vAS~~2L3  
* @param j j'Fpjt"&=  
* @return <sb~ ^B  
*/ }bb;~  
private int partition(int[] data, int l, int r,int pivot) { T<n  
do{ Acez'@z  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); b/+u4'"  
SortUtil.swap(data,l,r); G/)O@Ugp  
} 6AAz  
while(l SortUtil.swap(data,l,r); BtkOnbz8X  
return l; 3#3n!(  
} bQg c8/  
t% d Z-Ym  
} 0yk]o5a++  
|mZxfI  
改进后的快速排序: 0"jY.*_EW  
xG~P+n7t5$  
package org.rut.util.algorithm.support; ER%^!xA  
[_BP)e  
import org.rut.util.algorithm.SortUtil; d[iQ` YW5  
bV^rsJm  
/** x]}^v#  
* @author treeroot /CrSu  
* @since 2006-2-2 uy>q7C  
* @version 1.0 lU8l}Ndz"  
*/ }7b%HTF=  
public class ImprovedQuickSort implements SortUtil.Sort { (~p< P+  
; 5*&xz  
private static int MAX_STACK_SIZE=4096; )3cAQ'w  
private static int THRESHOLD=10; j`{?OYD  
/* (non-Javadoc) Y`~Ut:fZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'g}!  
*/ <$D`Z-6  
public void sort(int[] data) { sA+ }TNhq  
int[] stack=new int[MAX_STACK_SIZE]; /:cd\A}  
P\E<9*V  
int top=-1; ]%;:7?5l  
int pivot; 9)l$ aBa  
int pivotIndex,l,r; #|uCgdi  
)HEa<P^kJl  
stack[++top]=0; [:7'?$  
stack[++top]=data.length-1; xK>*yV  
^ gdaa>L  
while(top>0){ )*u8/U  
int j=stack[top--]; `}p0VmD{NE  
int i=stack[top--]; 7y.kQI?3  
/T"+KU*  
pivotIndex=(i+j)/2; `aOFs+<)  
pivot=data[pivotIndex]; * ` JYC  
z0 d.J1VW  
SortUtil.swap(data,pivotIndex,j); 34f?6K1c  
*I B4[6  
file://partition pE`})/?\*  
l=i-1; D, k6$`  
r=j; f[]dfLS"W  
do{ GV1pn) 4  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 1y:-N6  
SortUtil.swap(data,l,r); (^ J I%>  
} i}cRi&2[  
while(l SortUtil.swap(data,l,r); ncaT?~u j  
SortUtil.swap(data,l,j); atj(eg  
?al'F  q  
if((l-i)>THRESHOLD){ y5vvu>nd  
stack[++top]=i; R|'ybW'Y  
stack[++top]=l-1; AzPu)  
} QFA8N  
if((j-l)>THRESHOLD){ T~-ycVc  
stack[++top]=l+1; ,<.V7(|t)  
stack[++top]=j; _5w]a 2  
} D ;RiGW4  
9[#pIPxNK  
} |NlO7aQ>2H  
file://new InsertSort().sort(data); ~?l | [  
insertSort(data); ~$c\JKH-  
} 1v y*{D  
/** \<bx [,?  
* @param data ."g`3tVK  
*/ &w\{TZ{  
private void insertSort(int[] data) { .7J#_* N V  
int temp; RTYvS5 G  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <3n Mx^  
} )Om*@;r(  
} ~-k9%v`  
} jV i) Efy  
td$E/h=3  
} IYv`IS"  
X;$+,&M"  
归并排序: _T60;ZI+^  
'B |JAi?  
package org.rut.util.algorithm.support; 6%'QjwM_  
MxKS4k  
import org.rut.util.algorithm.SortUtil; $z6_@`[  
GblA9F7  
/** Y/F6\oh  
* @author treeroot KR} ?H#%  
* @since 2006-2-2 I^.Om])  
* @version 1.0 O 2V  
*/ Cp\6W[2+B  
public class MergeSort implements SortUtil.Sort{ poE0{HOU  
~g91Pr   
/* (non-Javadoc) #<fRE"v:Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZtNN<7  
*/ (g]!J_Z"  
public void sort(int[] data) { cZ,b?I"Q%  
int[] temp=new int[data.length]; Xg6Jh``  
mergeSort(data,temp,0,data.length-1); 9X6h  
} Ov@gh kr  
2Ah#<k-gC;  
private void mergeSort(int[] data,int[] temp,int l,int r){ {p2!|A&a  
int mid=(l+r)/2; l$KA)xbI  
if(l==r) return ; t 9lPb_70  
mergeSort(data,temp,l,mid); FaAC&F@u  
mergeSort(data,temp,mid+1,r); MpT8" /.]A  
for(int i=l;i<=r;i++){ Q0sI(V#  
temp=data; hgG9m[?K  
} : $1?i)  
int i1=l; 8S TvCH"Z_  
int i2=mid+1; "x0^#AVg  
for(int cur=l;cur<=r;cur++){ sI=xl  
if(i1==mid+1) AYBns]!  
data[cur]=temp[i2++]; [jQp~&nY  
else if(i2>r) &u."A3(  
data[cur]=temp[i1++]; CO/]wS  
else if(temp[i1] data[cur]=temp[i1++]; h'llK6_)  
else 9c bd~mM{  
data[cur]=temp[i2++]; h,:m~0gmj  
} ]h`&&Bqt  
} .vf'YNQ%  
mY|)KJ  
} P}}* Q7P  
l:~/<`o  
改进后的归并排序: J3V= 46Yc  
fUWG*o9  
package org.rut.util.algorithm.support; ELoDd&d8  
!/b>sN}  
import org.rut.util.algorithm.SortUtil; n` _{9R  
,&A7iO  
/** RMV/&85?y  
* @author treeroot 6yG^p]zZ  
* @since 2006-2-2 g{)dP!}  
* @version 1.0 u {cW:  
*/ {lzWrUGO  
public class ImprovedMergeSort implements SortUtil.Sort { QW~E&B%  
6Igz:eX  
private static final int THRESHOLD = 10; ,<_A2t 2  
5DU6rks%  
/* y-b%T|p9  
* (non-Javadoc) VBlYvZ;$*  
* t.y2ff<[U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H7Rx>h_  
*/ ?=msH=N<l  
public void sort(int[] data) { .NC!7+1m  
int[] temp=new int[data.length]; q[_Vu A]&  
mergeSort(data,temp,0,data.length-1); e)k9dOR  
} HyQJXw?A:  
]jQutlg|  
private void mergeSort(int[] data, int[] temp, int l, int r) { Wis~$"  
int i, j, k; C 82omL  
int mid = (l + r) / 2; a5^] 20Fa  
if (l == r) sE<V5`Z=  
return; 7aRi5  
if ((mid - l) >= THRESHOLD) p`dU2gV  
mergeSort(data, temp, l, mid); 2a)xTA#  
else FX&~\kmV'j  
insertSort(data, l, mid - l + 1); &BLJT9Frx  
if ((r - mid) > THRESHOLD) EJ.SW5  
mergeSort(data, temp, mid + 1, r); 76Cl\rV  
else !-x$L>1$  
insertSort(data, mid + 1, r - mid); Ta0|+IYk<  
?!:ha;n  
for (i = l; i <= mid; i++) { \:'/'^=#|  
temp = data; Rok7n1gW  
} UgSB>V<?  
for (j = 1; j <= r - mid; j++) { Xl{P8L  
temp[r - j + 1] = data[j + mid]; HRCT }  
} 558V_y:  
int a = temp[l]; 8'[7 )I=  
int b = temp[r]; ^/>(6>S^M  
for (i = l, j = r, k = l; k <= r; k++) { x+:UN'"r  
if (a < b) { mDABH@ R  
data[k] = temp[i++]; {4}yKjW%z  
a = temp; n,(sBOQ  
} else { =ho}oL,ZO  
data[k] = temp[j--]; ]cWUZ{puRB  
b = temp[j]; 4he GnMD  
} Zn+.;o)E<  
} %XDc,AR[  
} HZB>{O  
P )"m0Lu<  
/** 2;`1h[,-^  
* @param data b5I I/Y  
* @param l )9G[dDeC  
* @param i N)|yu1S  
*/ {\"x3;3!6  
private void insertSort(int[] data, int start, int len) { ^7cGq+t  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); \ZFGw&yN  
} KP^V>9q  
} `2WFk8) F  
} )[6U^j4  
} ZY={8T@  
<?6|.\&  
堆排序: #U4F0BdA  
Gr'  CtO  
package org.rut.util.algorithm.support; bHYy}weZ  
X/!o\yyT  
import org.rut.util.algorithm.SortUtil; @f~RdO3  
wE>\7a*P%  
/** `pa!~|p  
* @author treeroot {hjhL: pg  
* @since 2006-2-2 ~ "H,/m%2o  
* @version 1.0 {SPq$B_VR  
*/ )p0^zv{  
public class HeapSort implements SortUtil.Sort{ l`{\"#4  
= `F(B  
/* (non-Javadoc) IB"w&sBy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L(<*)No  
*/ ;-lXU0}&  
public void sort(int[] data) { sN*N&XG  
MaxHeap h=new MaxHeap(); . B9iLI  
h.init(data); LVfF[  
for(int i=0;i h.remove(); DB|Y  
System.arraycopy(h.queue,1,data,0,data.length); U^%Q}'UYym  
} \;3~a9q%  
jl$ece5v  
private static class MaxHeap{ A]0 St@  
K~{$oD7!  
void init(int[] data){ AaOu L,l  
this.queue=new int[data.length+1]; F?*-4I-  
for(int i=0;i queue[++size]=data; ,/%=sux  
fixUp(size); [< ?s?Ci  
} ;>yxNGV`  
} &*,#5.  
}Yzco52  
private int size=0;  2DtM20<>  
x%m%_2%Z  
private int[] queue; Egp/f|y  
~{g [<Qi  
public int get() { mt{nm[D!Xp  
return queue[1]; KIf dafRL  
} gMmaK0uhS  
eS\Vib  
public void remove() { SCHP L.n  
SortUtil.swap(queue,1,size--); cWsNr'MS*  
fixDown(1); vhW2PzHFRi  
} Xll}x+'uZK  
file://fixdown O)*+="Rg  
private void fixDown(int k) { O!#g<`r{K  
int j; +H-6eP  
while ((j = k << 1) <= size) { 9G#n 0&wRJ  
if (j < size %26amp;%26amp; queue[j] j++; DDP/DD;n}r  
if (queue[k]>queue[j]) file://不用交换 xd?f2=dd~h  
break; W)2p@j59A  
SortUtil.swap(queue,j,k); b9J_1Gl]  
k = j; R6Km\N  
} m@2QnA[ 4  
} OmpND{w  
private void fixUp(int k) { RuA*YV  
while (k > 1) { y<|7z99L  
int j = k >> 1; O7m(o:t x3  
if (queue[j]>queue[k]) mb TEp*H  
break; Lv;^My  
SortUtil.swap(queue,j,k); %KhI>O<  
k = j; Ys!82M$g  
} X ::JV7hu  
} E)5\i-n  
*20jz<  
}  EoR}Af  
IqaT?+O\?r  
} {yHCXFWlS  
XK3tgaH  
SortUtil: XkE`U5.  
JV^=v@Z3  
package org.rut.util.algorithm; rNWw?_H-H(  
5h=}j  
import org.rut.util.algorithm.support.BubbleSort; %~H-)_d20  
import org.rut.util.algorithm.support.HeapSort; ?}tFN_X"  
import org.rut.util.algorithm.support.ImprovedMergeSort; *=/ { HvJ  
import org.rut.util.algorithm.support.ImprovedQuickSort; Cazocq5  
import org.rut.util.algorithm.support.InsertSort; @sW24J1q+  
import org.rut.util.algorithm.support.MergeSort; +NZ_D#u  
import org.rut.util.algorithm.support.QuickSort; x;P_1J%Q  
import org.rut.util.algorithm.support.SelectionSort; .\ULbN3Z  
import org.rut.util.algorithm.support.ShellSort; d9f C<Tp  
XH4  
/** %+W{iu[|  
* @author treeroot r1`x=r   
* @since 2006-2-2 |P HT694Uz  
* @version 1.0 f;o5=)Y  
*/ eCU:Q  
public class SortUtil { "Y =;.:qe  
public final static int INSERT = 1; _ @NL;w:!  
public final static int BUBBLE = 2; kzQ+j8.,U  
public final static int SELECTION = 3; X; \+<LE  
public final static int SHELL = 4; &ZlVWK~v  
public final static int QUICK = 5; =vCY?I$P  
public final static int IMPROVED_QUICK = 6; zII|9y  
public final static int MERGE = 7; )hn6sXo+  
public final static int IMPROVED_MERGE = 8; u^ +7hkk  
public final static int HEAP = 9; DZ'P@f)]  
{0Yf]FQb-a  
public static void sort(int[] data) { r;.yz I  
sort(data, IMPROVED_QUICK); jjB~G^n  
} m<T%Rb4?@  
private static String[] name={ O~#!l"0 L+  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" `!;_ho  
}; gZ3u=uME  
Xv5wJlc!d  
private static Sort[] impl=new Sort[]{ Ct<udO  
new InsertSort(), H7&8\ FNa  
new BubbleSort(), FF`T\&u  
new SelectionSort(),  9X+V4xux  
new ShellSort(), wj$<t'MN  
new QuickSort(), ~rqCN,=d  
new ImprovedQuickSort(), urs,34h  
new MergeSort(), .LnGL]/  
new ImprovedMergeSort(), B:yGS*.tu  
new HeapSort() ;s= l52  
};  L2[($l  
W fN2bsx>  
public static String toString(int algorithm){  j|DsG,  
return name[algorithm-1]; ` xEx^P^7  
} $kdB |4C  
g#pr yYz  
public static void sort(int[] data, int algorithm) { O-0x8O^B  
impl[algorithm-1].sort(data); ?DS@e@lx  
}  c(f  
T?CdZc.  
public static interface Sort { F`9xVnK=  
public void sort(int[] data); lBLARz&c#  
} 'A=^Se`=  
t:x\kp  
public static void swap(int[] data, int i, int j) { b;B%q$sntC  
int temp = data; A7Cm5>Y_S  
data = data[j]; kYP#SH/  
data[j] = temp; CAig ]=2'  
} :S{BbQ){]  
} \j}ZB<.>  
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
如果您在写长篇帖子又不马上发表,建议存为草稿
认证码:
验证问题:
3+5=?,请输入中文答案:八 正确答案:八