423. Reconstruct Original Digits from English
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转自:https://www.cnblogs.com/charlesblc/p/5967694.html
public class Solution { // zero one two three four five six seven eight nine ten // z 0 // e 0 1 3 3 5 7 7 8 9 // r 0 3 4 // o 0 1 2 4 // n 1 7 9 9 // t 2 3 8 // w 2 // h 3 8 // f 4 5 // u 4 // i 5 6 8 9 // v 5 7 // s 6 7 // x 6 // g 8 public String originalDigits(String s) { // 太牛了,开始我也想到统计,但是想到删除字符串那些复杂的操作上面去了 int[] counts = new int[10]; for (int i=0; i<s.length(); i++) { char ch = s.charAt(i); if (ch == 'z') counts[0]++; if (ch == 'u') counts[4]++; if (ch == 'w') counts[2]++; if (ch == 'x') counts[6]++; if (ch == 'g') counts[8]++; if (ch == 'h') counts[3]++; // 3, 8 if (ch == 's') counts[7]++; // 6, 7 if (ch == 'f') counts[5]++; // 4, 5 if (ch == 'o') counts[1]++; // 0, 1, 2, 4 if (ch == 'i') counts[9]++; // 5, 6, 8, 9 } counts[3] -= counts[8]; counts[7] -= counts[6]; counts[5] -= counts[4]; counts[1] -= counts[0] + counts[2] + counts[4]; counts[9] -= counts[5] + counts[6] + counts[8]; StringBuilder sb = new StringBuilder(); for (int i=0; i<10; i++) { for (int j=0; j<counts[i]; j++) { sb.append(i); } } return sb.toString(); }}
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