C G I又稱通用網(wǎng)關(guān)接口(Common Gateway Interface)，是外部程序和We b服務(wù)器之間的標(biāo)
準(zhǔn)編程接口， P H P隱藏了其中的大部分復(fù)雜性，但是，了解一些它的基本內(nèi)容對(duì)設(shè)計(jì)應(yīng)用程
序和進(jìn)行調(diào)試都有很大幫助。
metricmatlab
ch ¬ ng 4
Ma trË n - c¸ c phÐ p to¸ n vÒ ma trË n.
4.1 Kh¸ i niÖ m:
- Trong MATLAB d÷ liÖ u ® Ó ® a vµ o xö lý d íi d¹ ng ma trË n.
- Ma trË n A cã n hµ ng, m cét ® î c gä i lµ ma trË n cì n m. § î c ký hiÖ u An m
- PhÇ n tö aij cñ a ma trË n An m lµ phÇ n tö n» m ë hµ ng thø i, cét j .
- Ma trË n ® ¬ n ( sè ® ¬ n lÎ ) lµ ma trË n 1 hµ ng 1 cét.
- Ma trË n hµ ng ( 1 m ) sè liÖ u ® î c bè trÝ trª n mét hµ ng.
a11 a12 a13 ... a1m
- Ma trË n cét ( n 1) sè liÖ u ® î c bè trÝ trª n 1 cét.
Computes estimates for the number of forests of a graph, input as a 0-1 incidence matrix. Notes: Compile in C++, "g++ -o span_forest span_forest.c". The program does not demand that the matrix is symmetric with 0 diagonal, but uses only the upper triangular part.
圖的深度遍歷，輸出結(jié)果為（紅色為鍵盤輸入的數(shù)據(jù)，權(quán)值都置為1）：
輸入頂點(diǎn)數(shù)和弧數(shù):8 9
輸入8個(gè)頂點(diǎn).
輸入頂點(diǎn)0:a
輸入頂點(diǎn)1:b
輸入頂點(diǎn)2:c
輸入頂點(diǎn)3:d
輸入頂點(diǎn)4:e
輸入頂點(diǎn)5:f
輸入頂點(diǎn)6:g
輸入頂點(diǎn)7:h
輸入9條弧.
輸入弧0:a b 1
輸入弧1:b d 1
輸入弧2:b e 1
輸入弧3:d h 1
輸入弧4:e h 1
輸入弧5:a c 1
輸入弧6:c f 1
輸入弧7:c g 1
輸入弧8:f g 1
深度優(yōu)先遍歷: a b d h e c f g
程序結(jié)束.
