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
  • 7776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。 vt@5Hb)  
插入排序: P,-f]k[_  
?AC flU_k  
package org.rut.util.algorithm.support; h+)XLs  
kH'LG!O  
import org.rut.util.algorithm.SortUtil; x%Ph``XI  
/** DPCB=2E  
* @author treeroot od=%8z  
* @since 2006-2-2 ME"B1 Se\  
* @version 1.0 hK F*{,'  
*/ F !DDlYUz.  
public class InsertSort implements SortUtil.Sort{ NUBf>~_}  
%5#ts/f  
/* (non-Javadoc) \$GM4:R D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &)[?D<  
*/ 04ZP\  
public void sort(int[] data) { 7kX;|NA1  
int temp; M0Y#=u.  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {~J'J$hn8  
} GCaiogiBg  
} /J''`Tf  
} O@*^2, 6  
v_M-:e3`  
} kr ,&aP<,  
Qh*"B  
冒泡排序: E,u/^V9x  
}8 V/Cd9  
package org.rut.util.algorithm.support; L'(ei7Z  
*AK{GfP_  
import org.rut.util.algorithm.SortUtil; .[mI9dc  
Z:>)5Z{'  
/** M_ *KA  
* @author treeroot {A<pb{<u  
* @since 2006-2-2 UAleGR`,  
* @version 1.0 xF4S  
*/ Qy0Zj$,Z  
public class BubbleSort implements SortUtil.Sort{ dsJMhB_41U  
=CBY_  
/* (non-Javadoc) XT2:XWI8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vndD#/lXq  
*/ py \KY R  
public void sort(int[] data) { h{xq  
int temp; 0iS"V^aH  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Fsdp"X.  
if(data[j] SortUtil.swap(data,j,j-1); N{b ;kiZq  
} -/^a2_d[  
} i&K-|[3{g  
} wE*o1.  
} Q[rmsk 2L'  
JSp V2c5Q  
} Y\7WCaSgi  
JWB3;,S  
选择排序: O@9<7@h+Nl  
#_(t46  
package org.rut.util.algorithm.support; \US'tF)/  
!+R_Z#gB  
import org.rut.util.algorithm.SortUtil; S/?!ESW6  
YRU1^=v  
/** fx74h{3u  
* @author treeroot VbU*&{j  
* @since 2006-2-2 cc0e(\  
* @version 1.0 6'Sq|@VOi  
*/ OYYk[r  
public class SelectionSort implements SortUtil.Sort { 1uwzo9Yg  
`4Db( ~  
/* vV$6fvS  
* (non-Javadoc) (Ts#^qC  
* F/ si =%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tNbL)  
*/ i3dV2^O  
public void sort(int[] data) { o],z/MPL  
int temp; !C6[m1F  
for (int i = 0; i < data.length; i++) { rCH? R   
int lowIndex = i; jhx@6[  
for (int j = data.length - 1; j > i; j--) { &YpWfY&V  
if (data[j] < data[lowIndex]) { WHkrd8  
lowIndex = j; c{(4s6D  
} ^U;r>[T9h  
} [&MhAzF  
SortUtil.swap(data,i,lowIndex); PrQs_ t Ni  
} `VL<pqPP  
} b0:5i<"w6  
.ng:Z7  
} i_' u:P<t  
u27*-X 5  
Shell排序: _GtG8ebr  
5^0K5R6GQf  
package org.rut.util.algorithm.support; vVfIe5+OP  
3:B4;  
import org.rut.util.algorithm.SortUtil; Cn"L*\o  
X"fSM #  
/** _ry7 [/)  
* @author treeroot nq,P.~l  
* @since 2006-2-2 /4{.J=R}  
* @version 1.0 au?5^u\  
*/ }'c@E0"  
public class ShellSort implements SortUtil.Sort{ \f-HfYG  
,/1[(^e  
/* (non-Javadoc) >sZ207*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hcrx(oJ5  
*/ :/6gGU>pu  
public void sort(int[] data) { k<.VR"I p  
for(int i=data.length/2;i>2;i/=2){ $g@-WNe  
for(int j=0;j insertSort(data,j,i); R1j)0b6cQ%  
} nep-?7x  
} <pp<%~_Z  
insertSort(data,0,1); y^tp^  
} MU#$tXmnC  
'i7!"Y6>  
/** M].D27  
* @param data ~'3hK4  
* @param j 3`^NaQ  
* @param i f%ynod8  
*/ ]>"q>XgnI  
private void insertSort(int[] data, int start, int inc) { oP`yBX  
int temp; L\/YS;Y  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Q!(qL[o  
} YThFskRoO  
} C+<z ;9`  
} P6([[mmG  
r<XlIi  
} F3,djZq  
TkjPa};R  
快速排序: ?:1)=I<A4  
fNZ:l=L3):  
package org.rut.util.algorithm.support; @"$rR+r'  
-7\6j#;l  
import org.rut.util.algorithm.SortUtil; !tr /$  
ckg8x&Z  
/** %m0x]  
* @author treeroot ?&>H^}gDZ  
* @since 2006-2-2 \&)k{P>=  
* @version 1.0 }N}\<RG  
*/ D-!#TN`Y  
public class QuickSort implements SortUtil.Sort{ #{L !o5  
PdNxuy  
/* (non-Javadoc) Vo-]&u&cr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5q>u]n9]  
*/ D|BP]j}6  
public void sort(int[] data) { i[M]d`<36  
quickSort(data,0,data.length-1); 9e xHR&>{  
} DHO+JtO  
private void quickSort(int[] data,int i,int j){ /qalj\ud  
int pivotIndex=(i+j)/2; A[.5Bi  
file://swap 0Fi&7%  
SortUtil.swap(data,pivotIndex,j); }^/;8cfLY  
. 7EZB  
int k=partition(data,i-1,j,data[j]); dS[="Set  
SortUtil.swap(data,k,j); oL 69w1  
if((k-i)>1) quickSort(data,i,k-1); eS{ xma  
if((j-k)>1) quickSort(data,k+1,j); p<9e5`& I  
^"?b!=n!  
} raPUx_$PH  
/** WP-'gC6K=  
* @param data <fLk\ =  
* @param i 8;r7ksE~  
* @param j mp x/~`c  
* @return .O+qtk!  
*/ 3M&IMf,/@  
private int partition(int[] data, int l, int r,int pivot) { +^6v%z  
do{ Nu%JI6&R  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); rLm:qu(F1  
SortUtil.swap(data,l,r); jt/ |u=  
} }ST0?_0F*  
while(l SortUtil.swap(data,l,r); :8<\]}J  
return l; @Fl&@ $  
} D(]])4  
\I4*|6kA  
} sN `NZyG  
K)`\u7Bu  
改进后的快速排序:  9g*MBe:  
#VwA?$4g`  
package org.rut.util.algorithm.support; Je6=N3)  
X|WAUp?  
import org.rut.util.algorithm.SortUtil; [@qUQ,Ie  
5^\f[}  
/** @zJhJ'~ Sl  
* @author treeroot Hkv4t5F  
* @since 2006-2-2 -pRyN]YD  
* @version 1.0 82X}@5o2  
*/ PG1#Z?_  
public class ImprovedQuickSort implements SortUtil.Sort { |x AwiF_  
~la=rh3  
private static int MAX_STACK_SIZE=4096; f(O`t}Ed  
private static int THRESHOLD=10; ,cvLvN8  
/* (non-Javadoc) oj7X9~ nd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9K8f ##3  
*/ @ P=eu3  
public void sort(int[] data) { !@_( W   
int[] stack=new int[MAX_STACK_SIZE]; I]`>m3SJ  
"=unDpq]  
int top=-1; s68EzFS  
int pivot; ;n*N9-|.  
int pivotIndex,l,r; bT@7&  
C/Ig.KmXF{  
stack[++top]=0; eXaa'bTx  
stack[++top]=data.length-1; <:u)C;  
#lax0IYY=  
while(top>0){ sBuVm<H  
int j=stack[top--]; #=f ]"uM<  
int i=stack[top--]; "Yn <]Pa_  
cz/mUU  
pivotIndex=(i+j)/2; Dk|<&uVV  
pivot=data[pivotIndex]; =*q:R9V  
:\*hAV1i  
SortUtil.swap(data,pivotIndex,j); xa#:oKF3  
Q^v8n1  
file://partition DU7kZ  
l=i-1; 3:a}<^DuCS  
r=j; #ZIV>(Q\H  
do{ N1I1!!$K;%  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); '[p~| mX  
SortUtil.swap(data,l,r); }Kq5!XJV9C  
} Uq/(xh,t5  
while(l SortUtil.swap(data,l,r); n>\BPiz  
SortUtil.swap(data,l,j); Y9m'RFZr  
J-fU,*Bk  
if((l-i)>THRESHOLD){ >]=1~ sF  
stack[++top]=i; k 6~k  
stack[++top]=l-1; -9{}rE  
} dCcV$BX,K  
if((j-l)>THRESHOLD){ gv; =Yhw.c  
stack[++top]=l+1; pF.Ws,nQ5  
stack[++top]=j; M6!kn~  
}  "t8mQ;n  
)%C482GO-  
} 8&VwAo  
file://new InsertSort().sort(data); Z>a_vC  
insertSort(data); 5JI+42S \  
} kT UQ8U  
/** j2#Vdw|j  
* @param data Xt'R@"H<V9  
*/ ']f]:X;6 w  
private void insertSort(int[] data) { \ +v_6F  
int temp; ~SJOynSz,  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3OFv_<6  
} E[LXZh  
} m0F-[k3)  
} [j}%&$  
J mFzSR?}  
} m |,ocz  
RgQ\Cs24Q  
归并排序: [}lv!KmzW  
kOR%<#:J  
package org.rut.util.algorithm.support; *ARro Ndr  
>Z|4/PF  
import org.rut.util.algorithm.SortUtil; 7G%`ziZ  
%dL|i2+*8  
/** Ft`#]=IS  
* @author treeroot >K-O2dry*  
* @since 2006-2-2 <g,k[  
* @version 1.0 Qkqn~>  
*/ ` M4; aN  
public class MergeSort implements SortUtil.Sort{ h+.^8fPR   
)J (ekfM  
/* (non-Javadoc) DfV_08  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OU9=O>  
*/ f|6%71  
public void sort(int[] data) { %)l2dK&9"j  
int[] temp=new int[data.length]; H7#RL1qM&  
mergeSort(data,temp,0,data.length-1); ":"M/v%F  
} Ks X@e)8u  
.,m$Cm  
private void mergeSort(int[] data,int[] temp,int l,int r){ &r DOqj  
int mid=(l+r)/2; p//">l=Ps  
if(l==r) return ; a+weBF#Z  
mergeSort(data,temp,l,mid); ,{8~TVO  
mergeSort(data,temp,mid+1,r); iyH<!>a  
for(int i=l;i<=r;i++){ P$]Vb'Fz  
temp=data; 51;(vf  
} 5/P?@`/ eT  
int i1=l; Uk;SY[mU  
int i2=mid+1; "-<u.$fE  
for(int cur=l;cur<=r;cur++){ ,=6Eju#P  
if(i1==mid+1) 4sZ^:h,1  
data[cur]=temp[i2++]; &g) `  
else if(i2>r)  & .(ZO]  
data[cur]=temp[i1++]; 8% 1hfj  
else if(temp[i1] data[cur]=temp[i1++]; )\VUAD%~e7  
else h.2!d0j]  
data[cur]=temp[i2++]; y62;&{?m  
} fEQ<L!'  
} @4$F%[g h  
#M`ijN!Y  
} rKJ%/7m  
=$BgIt  
改进后的归并排序: JxD@y}ZYE  
X:62 )^~'  
package org.rut.util.algorithm.support; G|^gaj'9  
T_Y6AII  
import org.rut.util.algorithm.SortUtil; k9R1E/;  
4vBbP;ELWq  
/** NoYu"57\  
* @author treeroot ^@[[,1"K  
* @since 2006-2-2 ?;{A@icr  
* @version 1.0 ]"CA P%  
*/ j./bVmd.  
public class ImprovedMergeSort implements SortUtil.Sort { l0Pg`wH,  
]L &_R^  
private static final int THRESHOLD = 10; :K8T\  
,cC4d`  
/* %eT/:I  
* (non-Javadoc) dOiy[4s  
* #4c uNX5m%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O^:Pr8|{J  
*/ R [uo:.  
public void sort(int[] data) { !J2Lp  
int[] temp=new int[data.length]; {g )kT_  
mergeSort(data,temp,0,data.length-1); y"9TS,lmK  
} `DA=';>Y  
}%XNB1/`  
private void mergeSort(int[] data, int[] temp, int l, int r) { y|lP.N/  
int i, j, k; {O^1WgGc[  
int mid = (l + r) / 2; YK[O#V  
if (l == r) ?xG #4P<C=  
return; ^WD [>E~  
if ((mid - l) >= THRESHOLD) '*~{1gG `  
mergeSort(data, temp, l, mid); xMuy[)b  
else  "= UP&=  
insertSort(data, l, mid - l + 1); {'}Ofj   
if ((r - mid) > THRESHOLD) iySmNI  
mergeSort(data, temp, mid + 1, r); xHL{3^  
else bpU^|r^W  
insertSort(data, mid + 1, r - mid); i&bttSRNV  
c2F`S1Nu<  
for (i = l; i <= mid; i++) { sY#K=5R  
temp = data; { aB_t%`w  
} E=x\f "Z  
for (j = 1; j <= r - mid; j++) { "thu@~aC  
temp[r - j + 1] = data[j + mid]; $==hr^H  
} f,uxoAS  
int a = temp[l]; R0=/ Th -  
int b = temp[r]; "3>#[o  
for (i = l, j = r, k = l; k <= r; k++) { rB7(&(n>^  
if (a < b) { j<gnh  
data[k] = temp[i++]; .#}SK!"B  
a = temp; $YSOkyC?  
} else { h\ ybh  
data[k] = temp[j--]; @'U4-x  
b = temp[j]; ^#Z(&/5f0  
} f~U|flL^  
} B}!n6j`  
} #IXQ;2%E  
<T&$1m{  
/** 8t7hN?,t  
* @param data M,{F/Yu  
* @param l c,-< 4e  
* @param i lA ,%'+-  
*/ ]O\6.>H  
private void insertSort(int[] data, int start, int len) { Df4n9m}E  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); :@3d  
} K:{Q~+   
} 8uu:e<PLv  
} Ln: y|t  
} rms&U)?  
G.N3R  
堆排序: i4-L!<bJ  
f2Slsl;  
package org.rut.util.algorithm.support; cK?t]%S  
U?rfE(!  
import org.rut.util.algorithm.SortUtil; )a6i8b3  
}i[jJb`bY  
/** MdKZH\z/  
* @author treeroot m|y]j4  
* @since 2006-2-2 S xgY q  
* @version 1.0 vSyN_AB?$  
*/ [Q*kom :  
public class HeapSort implements SortUtil.Sort{ W"0#  
kP6r=HH@  
/* (non-Javadoc) fXqe7[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mB :lp=c`  
*/ yQW\0&a$  
public void sort(int[] data) { %NBD^g F  
MaxHeap h=new MaxHeap(); )I <.DN&  
h.init(data); xv ja  
for(int i=0;i h.remove(); X >**M  
System.arraycopy(h.queue,1,data,0,data.length); zz9.OnZ~  
} +`4|,K7'  
;F:(5GBi  
private static class MaxHeap{ vB,N6~r>  
~9n@MPS^!  
void init(int[] data){ ^ 1g6(k'  
this.queue=new int[data.length+1]; '=ZE*nGC  
for(int i=0;i queue[++size]=data; -g>27EI5  
fixUp(size); (0][hdI~B  
}  ;js7rt  
} "K@os<  
z~W@`'f  
private int size=0; v3/cNd3  
7}#vANm  
private int[] queue; 9UwDa`^  
eMF%!qUr  
public int get() { $W2g2[+  
return queue[1]; (I+-wki"e  
} g7H;d  
s810714  
public void remove() { :{fsfZXXr  
SortUtil.swap(queue,1,size--); kz&)a>aA  
fixDown(1); !1l2KW<be  
} I?PKc'b  
file://fixdown  qV}zV\Nz  
private void fixDown(int k) { S38D cWIw  
int j; _A,m@BCz  
while ((j = k << 1) <= size) { e*g; +nz  
if (j < size %26amp;%26amp; queue[j] j++; 87HVD Di  
if (queue[k]>queue[j]) file://不用交换 n% *u;iG  
break; o#T,vu0s  
SortUtil.swap(queue,j,k); +F/'+  
k = j; tQ)8HVKF  
} Wb|IWn H$  
} b2 ),J  
private void fixUp(int k) { LJiMtqg  
while (k > 1) { ~E!"YkIr  
int j = k >> 1; Rub""Ga  
if (queue[j]>queue[k]) X23TS`  
break; ;6]+/e7O  
SortUtil.swap(queue,j,k); *s!8BwiE  
k = j; )sL:iGU  
} FVSz[n  
} 7Ua Ll  
S<>e(x3g]  
} 2`lit@u&u  
)jH"6my_  
} ,:#prT[P"  
pymT-  
SortUtil: ?>,aq>2O$  
KavRW.w  
package org.rut.util.algorithm; ,og@}gOMB  
9<Bf5d   
import org.rut.util.algorithm.support.BubbleSort; O,bj_CWx  
import org.rut.util.algorithm.support.HeapSort; y/PEm)=Tt  
import org.rut.util.algorithm.support.ImprovedMergeSort; }^QY<Cp|  
import org.rut.util.algorithm.support.ImprovedQuickSort; $zdJ\UX  
import org.rut.util.algorithm.support.InsertSort; 6 o+zhi;E  
import org.rut.util.algorithm.support.MergeSort; ;~@2YPj  
import org.rut.util.algorithm.support.QuickSort; eAl&[_o|S  
import org.rut.util.algorithm.support.SelectionSort; 0h; -Yg  
import org.rut.util.algorithm.support.ShellSort; YY.;J3C  
./6L&?*`~;  
/** ;bZ)q  
* @author treeroot 1di?@F2f  
* @since 2006-2-2 v5*SoUOF  
* @version 1.0 E7*]t_p"  
*/ }R J2\CP  
public class SortUtil { } HvVL}7  
public final static int INSERT = 1; F\XzP\  
public final static int BUBBLE = 2; xi.;`Q^#  
public final static int SELECTION = 3; `j<'*v zo  
public final static int SHELL = 4; un\"1RdO  
public final static int QUICK = 5; e0hT  
public final static int IMPROVED_QUICK = 6; bG5c~  
public final static int MERGE = 7; rL%xl,cn<  
public final static int IMPROVED_MERGE = 8; Dm5UQe  
public final static int HEAP = 9; CUYp(GU  
Pajr`gU  
public static void sort(int[] data) { 0.Iw/e  
sort(data, IMPROVED_QUICK); K|s+5>]W/[  
} 9,9( mbWJv  
private static String[] name={ *M8 4Dry`y  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" H%/$Rqg  
}; J"SAA0)@  
L ~  
private static Sort[] impl=new Sort[]{ b?Vu9!  
new InsertSort(), +C+3DwN  
new BubbleSort(), k|BEAdQ%M  
new SelectionSort(), F 6SIhf.;  
new ShellSort(), *rqih_j0  
new QuickSort(), z~X]v["d  
new ImprovedQuickSort(), QGsUG_/_P  
new MergeSort(), bb#w]!q  
new ImprovedMergeSort(), t=U[ ;?  
new HeapSort() mWigy` V^~  
}; TX 12$p\  
.!Z.1:YR  
public static String toString(int algorithm){ :1A Ound  
return name[algorithm-1]; %u!#f<"[  
} z?cRsqf  
(apAUIE  
public static void sort(int[] data, int algorithm) { 0tl  
impl[algorithm-1].sort(data); ?X eRL<n  
} =b; v:HC  
6)H70VPJ  
public static interface Sort { aeg5ij-]u@  
public void sort(int[] data); B\4SB  
} ` !rHH  
[y'jz~9c  
public static void swap(int[] data, int i, int j) { RJGf@am&  
int temp = data; (3 _2h4O  
data = data[j]; HeR-;L  
data[j] = temp; zf^!Zqn[8z  
} ?X=9@m  
} u(d>R5}'  
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:
3+5=?,请输入中文答案:八 正确答案:八