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Use Vec.last() method to access the top item of stack. (#942)
* Use Vec.last() method to access the top item of stack. * Use Vec.last() method to access the top item of stack.
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2 changed files with 2 additions and 2 deletions
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@ -22,7 +22,7 @@ pub fn main() {
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print_util::print_array(&stack);
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print_util::print_array(&stack);
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// 访问栈顶元素
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// 访问栈顶元素
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let peek = stack.get(stack.len() - 1).unwrap();
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let peek = stack.last().unwrap();
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print!("\n栈顶元素 peek = {peek}");
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print!("\n栈顶元素 peek = {peek}");
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// 元素出栈
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// 元素出栈
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@ -278,7 +278,7 @@
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stack.push(4);
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stack.push(4);
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/* 访问栈顶元素 */
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/* 访问栈顶元素 */
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let top = stack[stack.len() - 1];
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let top = stack.last().unwrap();
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/* 元素出栈 */
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/* 元素出栈 */
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let pop = stack.pop().unwrap();
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let pop = stack.pop().unwrap();
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