对某一个英文句子中所有单词倒置

for (int i = 0; i < arr.length / 2; i++) {

t = arr[i];

arr[i] = arr[arr.length - (i + 1)];

arr[arr.length - (i + 1)] = t;

}

int i = 0, j = 0;

while (j < arr.length) {

if (arr[j] in puncations(' ', ',', '.', '!', '?')) {

k = j;

num = (k + 1) - i;

for (; i < num / 2; i++) {

swap(arr[i], arr[num - (i+1)]);

}

i = j + 1;

}

j++;

}