Description: LL (1) grammar algorithm to determine, LL (1) grammar is used to determine the top-down analysis techniques. LL (1) the meaning is: the first L showed that top-down analysis is scanned from left to right input strings, the first two L analysis will show that the use of the most left-derived, 1 shows that only a symbol to the right to see it can decide how derived, namely, to choose which production (rule) for derivation. LL (1) determine the needs of grammar followed by calculating the FIRST set, FOLLOW sets and SELLECT set, and then determine whether to LL (1) grammar, sentence analysis of the final again.
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