1. Reverse a string, for example, change "abcde" to "edcba". Optimize space, optimize time. 2. Reverse words, for example, change "I love Alice very much" to "much very Alice love I". Optimize space, optimize time.
1.for i=1:n/2 swap a[i] and a[n-i] 2. reverse the whose string as 1, then reverse each word
【在 c**********e 的大作中提到】 : 1. Reverse a string, for example, change "abcde" to "edcba". : Optimize space, optimize time. : 2. Reverse words, for example, change "I love Alice very much" : to "much very Alice love I". Optimize space, optimize time.